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TestEquity 123C Operation and Service Manual

1. Setup Menu Prompt Function Setting Alternate Setting i of Lockout Menu See NOTE 1 below SEn Sensor Type C Do Not Change L n Linearization amp Do Not Change dEC Decimal 0 Alt 0 0 C_F Cor F C O Alte EF rL o Range Low 75 Do not make any lower r h Range High 180 Do not make any higher Fre Output 2 Function L 9 Do Not Change L da Limit Sides both Alt high High only or LoW Low only L h Y Limit Hysteresis Change not recommended ALY Alarm Type off Do Not Change PAT I Upper Display ACP Alt none PA 2 Lower Display LSet Alt Lh s High Set Point or LL S Low Set Point 805 Zone Address I Not functional for this application NOTE 1 The Lockout Menu sets the security clearance level as follows I Operations Menu read only Operations Menu set point read write Operations Menu set point read or write same as level 2 Operations Menu full access read write required to access Calibration Offset below Operations Menu and Setup Menu full access required to access Setup Menu and Calibration Offset below Operations Menu Prompt Function Setting Alternate Setting Low Set Point Appropriate Low Limit Set Point High Set Point Appropriate High Limit Set Point 1C A Calibration Offset QJ Calibration Offset as required see NOTE 2 below NOTE 2 LoC parameter in Setup Menu must be set for 4 or 5 to access the Calibr
2. To Resume profile on hold press the Profile key to enter the Resume Profile menu e Then press Aor V to make your choice for Resume e Press gt to select Resume Resume Profile Continue Holding gt Resume Terminate While a profile is on Hold the current set point can be adjusted at the SP1 prompt on the Main Page When a profile is resumed during a Ramp step the controller uses the Static Set Point from the Main Page to calculate the rate of change needed to get to the set point at the end of the step When a profile is resumed in a soak step the new set point value will be used as the soak value for the time remaining in the step How to Terminate a Running Holding Profile Press the Profile key while the profile is running to enter the Resume Control menu e Then press Aor V to make your choice for Terminate e Press gt to select Terminate Hold Profile _ Don t Hold Hold gt Terminate If you manually terminate a running profile the profile ends with a set point of Off This does not turn off the chamber fan The chamber temperature can reach 55 C just from heat generated by the fan and interior light or even higher if your test sample is energized How to Delete or Re Name a Profile Go to the Profiles Page Move the cursor down the Main Page to Go to Profiles then press the gt key Main Page gt Go to Profiles Go to Setup Go to Factory gt Choose Delete or
3. Accuracy amp Sensor Conformity Stability Digital Inputs Retransmit Outputs Optional Alarm Outputs Digital Outputs Communications Safety amp Agency Approvals Displays Data Retention 1 55 C above 50 C 1 66 C below 50 C 0 1 C C rise in ambient Four Contact closure or de voltage 10 KQ impedance Two User selectable ranges 0 to 10 VDC 0 to 5 VDC 1 to 5 VDC 0 to 20 mA 4 to 20 mA Two Electromechanical relay Form C 2 A 20 VDC or 240 VAC max 4 available for customer use Open collector output OFF 42 VDC 10 uA max ON 0 2 VDC 50 mA sink max Internal supply 5 VDC 80 mA EIA 232 and EJA 485 serial communications with Modbus RTU protocol UL c UL 916 listed File E185611 CE to EN61010 NEMA 4X and IP65 CE EMC to EN50082 2 CE EMC to EN55011 Process 5 seven segment red LED Interface Display 4 line high definition green LCD Selectable C or F Retention upon power failure via nonvolatile memory Seven years for battery backed RAM Note Total system accuracy in the chamber includes thermocouple wire accuracy Thermocouple wire accuracy is 1 C or 0 75 of reading whichever is greater Therefore total system accuracy over the chamber s operating range can be as much as 2 66 C although the typical accuracy is often better than 1 0 C Page 7 2 TestEquity 123C Temperature Chamber Chapter 8 Maintenance Chapter 8 Mainten
4. Chapter 10 Drawings Chapter 10 Drawings TestEquity 123C Temperature Chamber Page 10 1 Electrical Subpanel Component Location
5. The Operations Page provides access to menus for control tuning PID and controller alarms TestEquity has configured the security to require a password for access to all parameters in the Operations Page You must call TestEquity at 877 512 3457 or 805 480 0638 to obtain the password CAUTION The Series F4 Alarm functions are NOT used in the chamber s safety system and are NOT connected TestEquity does NOT recommend using the Series F4 alarm function as the main protection device The independent EZ Zone Limit Controller functions as the main protection device CAUTION The Series F4 Controller PID values have been properly configured by TestEquity to match the chamber s system requirements and to perform optimally over a wide range of operating conditions Improper modifications to these values can result in erratic performance and unreliable operation Do not attempt to modify the PID values unless you thoroughly understand what you are doing Setup examples in the Series F4 User s Manual are NOT applicable to this chamber If there is any doubt please call TestEquity before proceeding The correct values are documented in the Series F4 Controller Setup Parameters section of this manual CAUTION The Autotune PID function is not appropriate for use in this chamber Using this function will result in tuning values that will not work correctly Setup Page The Setup Page provides access to menus for config
6. 23 C 50 C 85 C 125 C 150 C 175 C 423 C we 2 min 12 min 24 min 33 min ultimate 0 C 3 min 9 min 18 min 32 min 4l min ultimate 40 C 9 min 16 min 25 min 39 min 48 min ultimate 55 C 14 min 18 min 31 min 44 min 53min ultimate 65 C 15 min 21 min 32 min 45 min 54min ultimate Note Transition times are measured after a 2 hour soak at the start temperature with an empty chamber Input Power 120 V nominal 110 to 126 VAC 60 Hz 1 PH Max Current Draw 18 A Recommended Minimum Service 20 A dedicated line Workspace Dimensions 18 W x 16 5 H x 13 5 D 2 3 cubic feet Outside Dimensions 26 W x 63 H x 36 5 D nominal Vent tube adds 3 to height Min Installed Clearance 6 from the left and right side 12 from the rear Access Ports 4 Port on left and right side two total Supplied with foam plugs Sound Level 62 dBA A weighted measured 36 from the front Weight 750 pounds NOTE Performance is typical and based on operation at 23 C 73 F ambient and nominal input voltage Designed for use in a normal conditioned laboratory Operation at higher ambient temperatures may result in decreased cooling performance Additional ports and shelves will also affect performance Operation above 30 C 85 F or below 16 C 60 F ambient is not recommended TestEquity 123C Temperature Chamber Page 7 1 Chapter 7 Specifications F4 Controller Specifications Specifications as configured for the TestEquity 123C Chamber
7. 23 0 GPIB optional The optional GPIB interface consists of an internal board which converts the F4 controller s serial interface to GPIB Chambers with a GPIB interface have a GPIB connector in place of the RS 232C connector GPIB programming resources and LabVIEW drivers can be downloaded from http www testequity com GPIB Ethernet optional The optional Ethernet interface model TE 1055 consists of an external converter box that connects to the chamber s RS 232C interface Ethernet programming resources can be downloaded from http www testequity com ETHERNET Page 4 18 TestEquity 123C Temperature Chamber Chapter 5 Limit Controller Chapter 5 Limit Controller Introduction The EZ Zone Limit Controller is a protection device It turns the chamber OFF if the workspace temperature exceeds either a high temperature or low temperature limit You can set these limits to correspond to the maximum and minimum temperature that your test sample can safely withstand This provides protection against someone setting the F4 Controller to a temperature that is unsafe for the test sample It also provides protection in the unlikely event of a chamber system component failure The Limit Controller has its own temperature sensor thermocouple and functions completely independent of the F4 Controller This section provides a brief overview on how to operate the Limit Controller For more detailed instructions see the EZ Zo
8. TestEquity 123C Temperature Chamber Page 1 3 Chapter 2 Installation Chapter 2 Installation Uncrating Inspect the shipping container for any signs of visible damage Notify the carrier and TestEquity immediately if there are signs of shipping damage The pallet is designed with ramps so the chamber can be rolled off without the need for a forklift or pallet jack Nn Cut the two metal bands that hold the packaging to the pallet 1 2 Remove the top cover 3 4 Locate the retainer in the front of the pallet Remove the two screws then remove the Remove the plastic fasteners that hold the outer box together and remove the outer box retainer Keep in mind that there is also Velcro that holds the retainer in place Place the retainer in the front of the pallet on the floor Locate the two ramps under the chamber and remove them 6 Attach the ramps to the front of the pallet using the Velcro straps The retainer will be under the ramps and act as a support Carefully roll the chamber off the pallet onto the ramps This should be done with at least two people Preparation For Use De aO Inspect the chamber for signs of shipping damage Read this entire manual Select a suitable location to install the chamber Connect to the power source Perform following the procedures as described in the Preventive Maintenance section a Inspect the electrical compartment b Inspect the refrigeration machinery c
9. Time in hours minutes and seconds Temperature Set Point PID set One of five sets of PID tuning parameters Normally just leave at PID Set 1 Guaranteed Soak Ramp Rate Step Ramp Rate changes the set point to a new value in a chosen rate of time Define the Ramp Rate step by choosing Wait for an event or process value Event outputs 1 through 7 to turn ON or OFF For controlling the power to remote devices Rate in degrees per minute Temperature Set Point PID set One of five sets of PID tuning parameters Normally just leave at PID Set 1 e e e e e e Guaranteed Soak TestEquity 123C Temperature Chamber Page 4 9 Chapter 4 F4 Temperature Controller Soak Step Soak maintains the set point from the previous step for a chosen time in hours minutes and seconds Define the Soak step by choosing e Wait for an event or process value e Event outputs through 7 to turn ON or OFF For controlling the power to remote devices e Time e PID set One of five sets of PID tuning parameters Normally just leave at PID Set 1 e Guaranteed Soak Jump Step Jump initiates another step or profile Define the Jump step by choosing e Profile to jump to e Step to jump to and e Number of Repeats NOTE If a power out condition occurs during a profile and more than 20 jump steps are stored in the F4 s Profile Program memory the controller will terminate the profile and turn off all outputs if Continue Hold o
10. l ea Temperature Controller Watlow F4DH CKCC 01 TCRI 200001 l ea Timing Module On Delay 30 Sec Airotronics THC1030SC TM1 200243 1 ea Chart Recorder Option Recorder 1 Pen 10 Honeywell DR4301 0000 G0100 RCD1 200094 l ea Chart paper 90 to 210 C Honeywell 24001660 034 200095 1 ea Chart paper 130 to 410 F Alternate Honeywell 24001660 033 200096 1 ea Pen Purple Six Pack Honeywell 30735489 007 200097 1 ea Event Relay Option Relay Solid State 5A Omron G3NA 205B DC5 24 SSR9 12 200032 4 ea Purge Option Relay Octal DPDT 10A 120VAC __ Idec RR2P UCAC120 CR6 200292 2 ea Relay Solid State 10A 5VDC in Omron G3NE 210T US DC5 SSR7 200129 l ea Purge Solenoid Valve Asco 8262G22 SV7 100305 I ea TestEquity 123C Temperature Chamber Page 8 13 Chapter 8 Maintenance Major Refrigeration Parts Description Mfr Mfr Part No Ref Part Qty UOM Capillary Tube Bleed 0 050 J B Industries TC50 23 100019 36 in Capillary Tube Main Cool 0 042 J B Industries TC42 25 100340 48 In Capillary Tube Equalizer 0 031 J B Industries TC31 28 100320 120 in Cascade Condenser Flatplate CUSTOM 21 100601 l ea Compressor 1 2 HP Low Stage Tecumseh AE2425Z 1 383231 l ea Condensing Unit 1 2 HP Tecumseh AE2425Z AA3CDG 5 383230 1 ea Desuperheater CUSTOM 100508 2
11. E TestEquity 123C Temperature Chamber Page 3 1 Chapter 3 Operation Front Panel Switches and Lights Power Switch The Power Switch controls power to the entire chamber The Power Switch illuminates when it is ON Conditioning Switch ON Mode The Conditioning Switch enables all chamber functions When the Conditioning Switch is OFF and the Power switch is ON only the F4 Controller and Limit Controller are operational When both the Power and Conditioning Switches are ON the chamber s conditioning system will function to maintain the temperature set point The Conditioning Switch does not illuminate Conditioning Switch Event 1 Mode When the Conditioning Switch is in the Event 1 position you can enable and disable all chamber functions through Event 1 Digital Output 1 of the F4 Controller When the Conditioning Switch is in the Event 1 position and Event 1 on the F4 Controller is Off all chamber functions are disabled If Event 1 is On all chamber functions are enabled See page 4 7 for instructions on how to control the events in manual mode In profile mode Event is named CONDITION CAUTION Remember to set DigitalOut 1 Event Output1 to On in static set point mode when the chamber is to be operational In this mode the Modbus register for Digital Output 1 is 2000 CAUTION Remember to set CONDITION to On in the profile event prompt for all programmed steps when the chamber is to be operational Ligh
12. ESI EQUITY Model 123C Temperature Chamber With F4 Controller EZ Zone Limit and Tecumseh Compressors Operation and Service Manual TestEquity LLC 6100 Condor Drive Moorpark CA 93021 Support 877 512 3457 Toll Free 805 480 0638 Corporate 800 732 3457 805 498 9933 http www testequity com Copyright 2011 2014 TestEquity LLC Rev 1 4 06 02 2014 Table of Contents Chapter 1 Safety Instructions 1 1 Introduction 1 1 Installation Safety Notices 1 1 Operation Safety Notices 1 2 Chapter 2 Installation 2 1 Uncrating 2 1 Preparation For Use 2 1 Installation Location 2 2 Condensate Drain 2 2 Chapter 3 Operation 3 1 Introduction 3 1 Summary of Chamber Operation 3 1 Front Panel Switches and Lights 3 2 Power Switch 3 2 Conditioning Switch ON Mode 3 2 Conditioning Switch Event 1 Mode 3 2 Light Switch 3 2 Heat Light 3 2 Cool Light 3 2 Loading the Chamber 3 3 Performance Considerations 3 3 Port Plugs 3 4 Avoiding Moisture 3 4 Internal Test Fixtures 3 4 Chapter 4 F4 Temperature Controller 4 1 Introduction 4 1 Security Features 4 1 F4 Controller Keys and Displays 4 2 Main Page 4 3 Static Set Point Control 4 4 System Enable Function 4 5 Event Outputs for Customer Use 4 6 Event Assembly optional 4 6 Purge Optional 4 7 GN2 Gaseous Nitrogen Installation Option TE 1239 4 7 Dry Air Installa
13. NOT connected TestEquity does NOT recommend using the Series F4 alarm function as the main protection device The independent EZ Zone Limit Controller functions as the main protection device The Series F4 Controller has been properly configured by TestEquity to match the chamber s system requirements and to perform optimally over a wide range of operating conditions Improper modifications to these setup values can result in erratic performance and unreliable operation Setup examples in the Series F4 User s Manual are NOT applicable to this chamber Do not attempt to modify the setup values unless you thoroughly understand what you are doing If there is any doubt please call TestEquity before proceeding NEVER select Full Defaults in the Series F4 Controller s Factory Test Menu This will erase all the correct values which are documented in the Series F4 Controller Setup Parameters section of this manual The EZ Zone Limit Controller has been properly configured by TestEquity to match the chamber s system requirements Improper modifications to these setup values can result in unreliable and unsafe operation Do not attempt to modify the setup values unless you thoroughly understand what you are doing The correct values are documented in the EZ Zone Limit Controller Setup Parameters section of this manual Always verify that the Limit Controller s high and low limits are set to temperatures that are approp
14. NOT substitute refrigerants Improper repairs will void the warranty These instructions are intended as guidelines for repairing TestEquity chambers Details such as how to attach a gauge manifold are not covered These are NOT do it yourself instructions R 404A High Stage Charge TestEquity does NOT recommend charging the system by relying on a clear sight glass only Although a clear sight glass generally means the system is fully charged it can be misleading For example if the system is charged on a cool day or with an empty chamber it could be undercharged for hot days or with a heavy load The proper charging procedure is as follows 1 Repair any leaks before recharging 2 Attach a vacuum pump and manifold gauge to the suction and discharge ports 3 Evacuate the system to at least 100 microns DO NOT GUESS You must use a micron gauge 4 Use a charging scale to weigh in 1 pound 5 ounces 21 ounces of R 404A 5 Verify the cooling performance as outlined in How to verify the chamber performance NOTE If the F4 Controller is cycling Cool Light cycles on off the sightglass may appear 1 2 to 2 3 full This is normal R 508B Low Stage Charge 1 Repair any leaks before recharging 2 Attach a vacuum pump and manifold gauge to the suction discharge and expansion tank ports Attaching to the expansion tank is very important because it is otherwise very difficult to evacuate the tank through the pressure regulator or
15. System and Operation Parameters as documented in the TestEquity manual NOT the Series F4 User s Manual TestEquity has configured the F4 Controller with the parameters as documented on the following pages TestEquity 123C Temperature Chamber Page 8 15 Chapter 8 Maintenance Series F4 Setup Parameters System Main Page Go to Setup System Choose GSB1 Source Input1 Guaranteed Soak Band 1 3 0 C 5 4 if F PID Units US ForC C Show F or C Yes Ch1 Autotune SP 90 Input 1 Fail 0 Open Loop Ch1 off Power Out Time 10 Sec Power Out Action Continue Analog Input Main Page Go to Setup Analog Input 1 Sensor Thermocouple Type T Choose Decimal 0 0 SP Low Limit 75 0 C 103 0 if F SP High Limit 175 0 C 347 0 if F Calibration Offset 0 0 C Filter Time 1 0 sec Error Latch Self Clear Digital Input Menu Main Page Go to Setup Digital Input 1 4 Name No Function Off Control Output Main Page Go to Setup Control Output 1A Function Heat Choose Cycle Time Fixed Time Enter Cycle Time 3 0 sec Hi Power Limit 100 Low Power Limit 0 Main Page Go to Setup Control Output 1B Function Cool Choose Cycle Time Fixed Time Cycle Time 6 0 sec Hi Power Limit 100 Low Power Limit 0 Alarm Output Main Page Go to Setup Alarm Output 1 Choose to Name Yes Name TEMP ALARM Type Process Source Input 1 Latching Alarm Latches Silencing Yes Alarm Hysteresis 1 7 C 3 0 if F Si
16. capillary tube that is connects it to the system 3 Evacuate the system to at least 100 microns Do NOT guess You must use a micron gauge 4 Do NOT put any additives in the system Pentane is NOT necessary or desirable 5 Charge the system until the standby pressure is 125 PSIG Allow time for the charge to equalize as read on the suction and discharge gauges This is 5 PSIG higher than the target amount of 120 PSIG See NOTE below 6 Verify the cooling performance as outlined in How to verify the chamber performance NOTE If the low stage has been evacuated and recharged the standby pressure should be rechecked after 24 hours to make sure it is 120 PSIG This is because the refrigerant mixes with the POE oil in the compressor causing a lower standby pressure than was initially observed Do not mistake this initial loss of pressure with a leak After verifying that there is no leak you may need to top off the charge if the pressure is too low TestEquity 123C Temperature Chamber Page 8 11 Chapter 8 Maintenance Recommended Spare Parts Replacement parts are available from TestEquity Parts are generally in stock and ready for immediate shipment Next day delivery is always available If you cannot risk being out of service for even one day then you should purchase critical spare parts in advance Although most parts are standard and available from a variety of local distributors some parts are either harder to find or
17. custom The following is a list of the kinds of parts that you may want to purchase in advance Electrical Parts Contactors Relays Fuses Heat Limiter Circulator Motor and Fan Switches Refrigeration Parts Solenoid Valves Expansion Valves Regulator Valves Page 8 12 TestEquity 123C Temperature Chamber Chapter 8 Maintenance Major Electrical Parts Description Mfr Mfr Part No Ref Part Qty UOM Air Heater CUSTOM 200277 HT1 200277 l ea Arc Suppressor ITW Paktron 104MACQRL150 ASI 2 200296 2 ea Audible alarm Floyd Bell MC 09 201 Q ALI 200005 1 ea Circulator Motor with Fan Blade Kit CUSTOM 100585 FM2 100585 1 ea Contactor 1 Pole 30A 120V Coil Hartland Controls HCC 1XT02AA C1 3 200237 13 ea Heat Limiter Assembly Thermodisc G5A01240C with QC Term HL 222253 l ea Limit Controller Watlow PM6L1AJ AAAABAB TCR2 200301 1 ea Line Cord Intl Config 80560 200205 1 ea Pilot Light Chicago Miniature 6063 001 534R PL1 2 222280 2 ea Relay Octal DPDT 10A 120VAC __ Idec RR2P UCAC120 CR1 CR4 200292 2 ea Relay Solid State 10A 24VDC In _ Omron G3NE 210T US DC24 SSRI 200177 l ea Relay Solid State 10A 5VDC in Omron G3NE 210T US DC5 SSR4 6 200129 2 ea Lamp Philips T22 125 130V 15W E14 LTI 200203 l ea Switch Carlingswitch LRA211 RA B 125N SWI 3 200023 2 ea Switch ON OFF ON Carlingswitch RC911 RA B 0 N XLR1 SW2 200275
18. from the chamber interior walls These specifications are for an empty chamber The addition of a test sample may affect the temperature uniformity For example an energized test sample will produce a higher temperature near the sample Controller Accuracy This is the ability of the F4 Controller to accurately display a temperature measurement when compared to a standard The controller display accuracy is 1 66 C However the total measurement accuracy in the chamber includes the thermocouple sensor wire accuracy Thermocouple wire accuracy is 1 C or 0 75 of reading whichever is greater Therefore total system accuracy over the chamber s operating range can be as much as 2 66 C although the typical accuracy is often better than 1 0 C Can I tilt the chamber to move it You should be able to tilt the chamber 45 degrees to move it After tilting it and moving it into place perform the steps as outlined in How to inspect the refrigeration machinery compartment and How to check the refrigerant charge before placing the chamber back into service to make sure that no damage has occurred I m not going to use the chamber for a while Is there anything I should do to prepare it for storage Perform ALL the steps in the Preventive Maintenance Schedule before placing the chamber into storage This will ensure that the chamber will be ready to operate when it is taken out of storage If the chamber has a problem and is sti
19. minimize temperature gradients If necessary additional shelves should be used to evenly distribute the load Verify that the temperature gradients are within acceptable limits by measuring the chamber temperature at strategic points using a multipoint thermocouple meter or data logger TestEquity 123C Temperature Chamber Page 3 3 Chapter 3 Operation You may find that the temperature throughout the chamber is even but always different from what the F4 Controller indicates The correct way to adjust what the F4 Controller displays compared to what is measured at some point other than the controller s sensor is with the Calibration Offset parameter NOT by recalibrating the controller Port Plugs Foam port plugs are provided with a gray silicone surface on one side The port plug must be inserted with the gray silicone surface facing the inside of the chamber Port plugs should be considered expendable and be replaced when they no longer provide a good seal Avoiding Moisture Any time the ambient air is subjected to temperatures below the dew point moisture will condense out of the air The effect is ice or frost during low temperature operation or water when maintaining over 0 C and cooling is required To avoid moisture condensation make sure the port plugs are inserted at all times Also avoid opening the chamber door while the chamber is operating at temperatures below room ambient When a low temperature te
20. position the Cursor Event Output2 E next to Event Output1 Event Output3 y 3 Press the key once to select Event Output1 Event Outputt1 Then press the Aor V key to select On or Off Of fF gt On 4 Press the key once to return to the Main Page Choose Event Output prompt SP1 85 0 C A 5 Press the lt key once to return back to the Main Page gt Digitalout a E You will see a 1 in the DigitalOut line if Event is Power1 50 V On TestEquity 123C Temperature Chamber Page 4 5 Chapter 4 F4 Temperature Controller Event Outputs for Customer Use The F4 Controller has digital outputs which can be configured as Event Outputs to turn remote devices on and off There are four Event Outputs which are available for customer use Event Output 1 is dedicated for System Enable Event Output 2 is uncommitted Event Output 3 is dedicated for optional Purge Event Output 8 is configured to control the refrigeration compressors The Event Outputs 4 through 7 are available for customer use Event Assembly optional The optional Event Assembly contains four solid state relays to control AC operated devices such as power to a test sample The solid state relays are rated for 24 to 240 VAC 5 0 Amps Connecting to the Event Board I 2 3 4 5 Unplug the chamber from the power source Remove the top cover Locate the Event Assembly and connect your wires to the desired solid state relay terminals The event outputs are just switch
21. profiles You do not need a computer to enter a profile it can be easily done through the controller s front panel keys A Profile is a set of instructions programmed as a sequence of steps The controller handles the profile steps automatically in sequence As many as 40 different profiles and a total of 256 steps can be stored in non volatile memory The 256 steps are grouped by profile So one profile could have 256 steps or 39 profiles could have 6 steps and one could have 22 or 32 profiles could have eight steps each The maximum number of steps is 256 and the maximum number of profiles is 40 Step Types Use the six available step types Autostart Ramp Time Ramp Rate Soak Jump and End to create simple or complex profiles involving all inputs and outputs The Series F4 prompts you to define each step s properties Autostart Step The use of an Autostart step in a profile is optional Autostart pauses a profile until the specified date or day and time of a 24 hour clock Define the Autostart by choosing e Day of the week or Date e Time To invoke an Autostart step in a profile you must activate the profile via the Profile Key and select the Autostart step Ramp Time Step Ramp Time changes the set point to a new value in a chosen period of time Define the Ramp Time step by choosing Wait for an event or process value Event outputs 1 through 7 to turn ON or OFF For controlling the power to remote devices
22. sufficient volume in the system to keep the standby pressure also known as static or balance pressure when the system is off within safe limits Both the low and high stages each have a high pressure switch 8A 8B respectively which turns off the entire refrigeration system in the event of an out of limit condition The F4 Controller cycles the low stage liquid line solenoid valve SV1 or 18A 19A on off to control the chamber temperature When SV1 is on liquid refrigerant flows through the capillary tube and evaporator to cool the chamber When SV1 is off the flow stops The hot gas regulator 9A is adjusted to keep the suction pressure at 5 to 8 PSIG when SV1 is off This is also called bypass mode Pilot Light PL2 provides an indication on the front panel when the F4 Controller is turning SV1 is on The F4 Controller has internal logic to turn the compressors on if cooling is required to maintain the temperature set point The low stage compressor turns on 30 seconds after the high stage turns on through Timing Module TM1 This reduces the system s starting current while allowing the cascade condenser to get cool before the low stage turns on Page 8 8 TestEquity 123C Temperature Chamber Chapter 8 Maintenance Troubleshooting SYMPTOM CONDITION CAUSES Does not heat up at all If F4 Controller light 1A is ON circulator fan is ON the Heat light is OFF If F4 Controller light 1A is ON ci
23. 100508 1 ea Discharge Pressure Limit Johnson Controls P20EA 1D 14 100342 l ea Expansion Tank CUSTOM 100346 11 100346 2 ea Expansion Valve R404A Main Danfoss 068U2317 20 100471 l ea Expansion Valve Suction Cooling Danfoss 068U202700 10 11 100314 2 ea Filter Drier Danfoss 023Z5048 6 34 100524 2 ea High Pressure Cutout Johnson Controls P20DB 1D 8A 8B 100341 2 ea Hot Gas Bypass Regulator Sporlan ADRI 1 4 0 55 9A 9B 100497 3 ea Low Stage Evaporator CUSTOM 100504 26 100504 1 ea Oil Separator Temprite 900 3 100536 1 ea Orifice Danfoss 068U1033 p o 20 100607 1 ea Sight Glass Henry MI 30 1 4S 7 100608 1 ea Solenoid Coil Sporlan MKC 1 120 50 60 SV1 2 100011 2 ea Solenoid Valve Sporlan E38130 3 8 X 3 83ODF 19A B 100010 2 ea Strainer Supco S211 22 29 100606 2 ea General Parts Description Mfr Mfr Part No Ref Part Qty UOM Door Gasket Inner CUSTOM CUSTOM 382236 1 ea Door Gasket Outer CUSTOM CUSTOM 382235 1 ea Door Latch Chamber Workspace Southco A7 10 301 20 300216 1 ea Fan Alum 6 CUSTOM CUSTOM 301024 1 ea Port Plug Foam 4 CUSTOM CUSTOM 300534 2 ea Shelf with 4 Clips CUSTOM CUSTOM TE 0231 1 ea Shelf Retainer Clip Kason Style 66 0066000008 300015 4 ea Window CUSTOM CUSTOM 300709 1 ea Page 8 14 TestEquity 123C Temperature Chamber Chapter 8 Maintenance Series F4 Controller Setup Parameters CAUTION The Series F4 Controller has been properly configured by TestEquity to match the chamber s syst
24. A v Adjusts Char lt gt Save Changes Choose the step type There are five step types each of which must be defined through different parameters See Step Types earlier in this chapter Choose Step1 Type Autostart gt Ramp Time p Soak v Define each step type e The Series F4 prompts you to define the parameters of each step type See Step Types earlier in this chapter There are 7 Digital Outputs which can be selected as being On or Off in each step Digital Output 1 is named COND in the profile menu and can be used to turn the entire chamber on or off as long as the CONDITIONING Switch is in the EVENT 1 position Digital Outputs 2 through 7 are named DIGIT OUT2 through 7 Not all choices are shown in this example Choose to wait ___ gt Step does not wait Step waits for Choose DIGIT OUT2 gt Off On Enter Ramp Time 00 00 01 H M S A v Adjusts Digit lt gt Save Changes Enter Chi SP _ 85 0 C A v Adjusts Value lt Back gt Next Choose the end state e All profiles end with an End step which is preprogrammed into the new profile See End Step earlier in this chapter Choose End State Control Off All Off gt Idle gt Save your settings Press lt to exit the Profiles Page e After exiting the Profiles Page choose A to save profile data Save profile data or restore values Y Restore A Save TestEquity 123C Temper
25. Display displayed in Fahrenheit or Celsius Indicates the actual chamber temperature or displays the value of the parameter in the lower display EZ ZONE Output Indicator Lit when the limit setting is exceeded Only light 2 is applicable for this configuration Lower Display Indicates SAFE during normal operation or FA L in an out of limit condition or the parameter whose value appears in the gt Up Down Keys 0 rw When in a menu scrolls through available options for any given prompt In other menus can change set points upper display and modify the upper display to a higher or lower value EZ Key RESET Key Advance Key Resets the limit after a Returns to the Home Page or Advances through the trip condition has cleared Resets the limit after a trip parameter prompts condition has cleared Figure 5 1 Limit Controller Keys and Displays How to Set the High and Low Temperature Safety Limits 1 Press the key once to get the prompt in the lower display This is the Low Limit Set Point prompt 2 Press the Aor V key to enter the desired Low Limit Set Point in the upper display Make sure it is lower than your actual chamber temperature set point and at least below room temperature to prevent nuisance tripping 3 Press the key once again to get the prompt in the lower display This is the High Limit Set Point prompt 4 Press the Aor V key to enter the desired High Limit Set Point in the upper d
26. Page in order to perform a calibration or to change the security password You must call TestEquity at 877 512 3457 or 805 480 0638 to obtain the password CAUTION NEVER select Full Defaults in the Factory Test Menu This will erase all the correct values which are documented in the Series F4 Temperature Controller Setup Parameters section of this manual Computer Interface CAUTION Every setting in the F4 Controller can be accessed via the computer interface y 8 p Improper modifications to configuration settings can result in erratic performance and unreliable operation RS 232C The F4 Temperature Controller has an RS 232C interface A DB 9 connector is located on the rear panel It is wired to accommodate a null modem cable To communicate with the controller from a PC you need to run software that uses the Modbus RTU protocol Each controller function has a register number which can be read or written to when applicable These registers are listed Chapter Seven of the Series F4 User s Manual RS 232C Modbus programming resources can be downloaded from http www testequity com RS232 Common Modbus Registers Actual chamber temperature reading is register 100 Input 1 Value Static temperature set point is register 300 Set Point 1 Temperature set point during a profile is register 4122 Set Point 1 Current Profile Status Decimal points are implied For example 1005 is actually 100 5 and 230 is
27. Re Name e Press Aor to scroll through your choice e Press gt to select your choice The controller will prompt you to select the profile you want to delete or re name Main gt Profile__ Edit Profile gt Delete Profile Re Name Profile gt TestEquity 123C Temperature Chamber Page 4 13 Chapter 4 F4 Temperature Controller How to Edit a Profile Go to the Profiles Page Main Page Move the cursor down the Main Page to gt Go to Profiles Go to Profiles then press the gt key Go to Setup Go to Factory Choose Edit Profile Main gt Profile _ e Press the W key to choose on Edit Profile e Then press the key Create Profile gt Edit Profile Delete Profile Select the desired stored profile to edit Edit Profile ___ e Press the Aor W to scroll through the list of Profilet stored profiles gt Profile2 e Press gt to select the desired profile Profile3 Choose how to edit the step Choose to e Press the Aor VY to scroll through the list of step Insert Step edit choices gt Edit Step e Press gt to select your choice Delete Step Done To edit a step Edit Step e Press the Aor V to scroll through the list of steps gt Step 1 Ramp Time you want to edit Step 2 Soak e Press gt to scroll through the step parameters and Step 3 Ramp Time make any desired changes To insert a step Insert Before Choose Edit Profile see step 4 above Step 1 R
28. Refer to the electrical and refrigeration drawings to identify the referenced items described below The electrical items are referenced with a letter s and number The refrigeration items are referenced with a number only or number followed by a single letter Air Heating System The chamber is heated by an open element nichrome heater HT1 The heater is located in the air plenum The F4 Controller provides a time proportioned output to a solid state relay SSR1 This turns the heater on off as required to maintain the temperature set point Pilot light PL1 provides an indication on the front panel when the heater is on Relay CR4 High Heat Interlock provides staging for the available heat When the compressors are off full heat of 1 000 Watts is available Then the compressors are on half heat of 500 Watts is available A fusible heat limiter HL provides failsafe protection against a catastrophic failure by opening the heater circuit at 240 C Refrigeration System Cooling is accomplished by a cascade refrigeration system A cascade refrigeration system consists of two interdependent refrigeration systems The low stage provides cooling to the chamber interior through a finned evaporator coil 26 which is located in the air plenum The high stage provides cooling to the cascade condenser 21 The cascade condenser is a heat exchanger that has one circuit which is the evaporator of the high stage and another circuit which is the condense
29. Soak step option The use of Guaranteed Soak in a profile is optional The Guaranteed Soak step requires the chamber temperature to be at the set point temperature within the Guaranteed Soak Band value before the time clock and the step activity proceeds The Guaranteed Soak Band is configured by TestEquity for 3 0 C and this can be changed in the System Menu Page 4 10 TestEquity 123C Temperature Chamber Chapter 4 F4 Temperature Controller How to Program a New Profile Go to the Profiles Page Move the cursor down the Main Page to Go to Profiles then press the gt key Main Page gt Go to Profiles Go to Setup Go to Factory lt gt Create a new Profile The cursor will be on Create Profile Press the gt key Main gt Profile__ gt Create Profile Edit Profile Delete Profile lt Name the profile You can name your profiles for easy reference if desired Names can have up to 10 characters You can also use one of the default profile names ex Profile1 and skip this step To name a profile e Press gt to enter the name space and the first position e Press the Aor YW to scroll through the alphabet and stop at the letter or number desired e Press gt to move to the next position e Continue until the name is complete or until you move through the name space into the next screen e Press gt to save the name of the profile Choose to Name No gt Yes Enter Profile Name _ PROFILE1
30. ak Profile Step Repeats Type SP Ramp Time gt On gt 00 00 01 23 0 1 Ramp Rate On E 50 0 Soak On 01 00 00 Ramp Rate On Soak On Jump gt Ramp Rate On Soak 00 00 01 End Idle 23 0 01 00 00 VVVVVVV VVVVVV VV Ve Me Wee WE AM AE ON VVVVVV VV VVVVVVV VD VVVVVVVVN OMANDMABRWNH Step Description Establishes a recommended initialization step Goes to 23 C as quickly as possible Chamber is turned ON via Event 1 Goes to 50 C at a controlled rate of 1 C per minute Chamber is turned ON via Event 1 Will hold for 1 hour Chamber remains ON via Event 1 Goes to 0 C at a controlled rate of 1 C per minute Chamber is turned ON via Event 1 Will hold for 1 hour Test sample remains ON via Event 1 Jumps back to step 2 Repeats this 3 times for a total of 4 cycles After all cycles are completed goes to 23 C at a controlled rate of 1 C per minute Chamber is turned ON via Event 1 Chamber is turned OFF via Event 1 End of program Controller returns to a 23 C manual set point Chamber remains OFF via Event 1 1 2 3 4 5 6 7 8 9 Notes Guaranteed Soak Band is set at the factory for 3 0 C Can be changed in the System Menu Means no entry or selection is required Just scroll through this prompt to the next prompt Means prompt does not show for this step type TestEquity 123C Temperature Chamber Page 4 16 Chapter 4 F4 Temperature Controller Operations Page
31. amp Time e Press the Aor VY to scroll through the number of gt Step 2 Soak the step that the new step will precede Step 3 Ramp Time e Press gt to enter the new step and follow the step parameter prompts To delete a step Delete Step _ Choose Delete Step see step 4 above Step 1 Ramp Time Press the Aor V to scroll through the number of the step you want to delete e Press to delete the step gt Step 2 Soak Step 3 Ramp Time Save your settings e Press lt successively to exit the Profiles Page e After exiting the Profiles Page choose A to save the new profile values or V to restore the old values Save profile data or restore values Y Restore A Save An End Step cannot be deleted Inserting or deleting a step will renumber all steps that follow A Jump Step that jumps to an End Step cannot be deleted Inserting a new ramp step usually requires inserting an associated soak step e Deleting a ramp step usually requires deleting the associated soak step Page 4 14 TestEquity 123C Temperature Chamber Chapter 4 F4 Temperature Controller 40 C to 85 C no ramps as quickly as possible 30 minute soak time 4 cycles End with return to 23 C manual set point NOTE The CONDITIONING Switch must be in the ON position not EVENT 1 Profile Example 1 Date Choose Digit Out Time Guar Jump to End Type Day Time Waitfor COND 2 3 4 5 H M S Rate Soak Profile Step Repeats Type Ramp Ti
32. amping profile runs When blinking the profile is on hold When not lit the controller operates as a static set point controller Profile Key Summons a menu that allows you to start hold resume or terminate a profile Upper Display Displays actual chamber temperature during operation Displays error information if errors occur Main Page gt SP1 Digital Out Power Left and Right Keys Move right to select the choice to the right of the cursor and proceed to the next screen Move left to exit Information Key Provides information in the Lower Display about the cursor selected parameter Another press toggles the display back to the parameter To navigate through the menus 1 Use the A or V key to move the cursor to line up with the item to be selected in a menu on the lower display i et ie Press the key to select the item Press the gt key to enter the value or choice Repeat until you return to the original list Output Indicator Lights 1A Heat 1B Cool Alarm Output Indicator Lights Lit during an alarm state Communications Indicator Light Lit pulsates when the controller sends or receives valid data Scroll Bar Appears when the Up or Down Keys can reveal more information in the Lower Display Up and Down Keys Move the cursor position in the Lower Display through the menus in the direction of the key arrow Increase or decrease a value or change a le
33. ance WARNING Maintenance must be performed by properly trained personnel only Preventive Maintenance Intervals Daily or As Needed e Clean chamber interior and exterior e Listen for abnormal noise or vibration Every 3 Months e Inspect the door seal e Inspect the refrigeration machinery compartment e Verify the chamber performance Every 6 Months e Inspect the electrical compartment e Clean the condenser Every 12 Months e Verify the calibration TestEquity 123C Temperature Chamber Page 8 1 Chapter 8 Maintenance Maintenance Procedures How to Clean the Chamber Interior and Exterior e Wipe or vacuum out all debris e Clean surfaces with a damp cloth mild detergent or stainless steel cleaner Avoid cleaners that are abrasive or leave a residue Do NOT use steel wool e If you clean the interior with something other than water you may want to operate the chamber at high temperature approximately 125 C after cleaning This helps to bake out any residue Remove the port plugs to permit the residual vapors to escape e Clean the silicone door gaskets with a damp cloth or mild detergent e Clean the exterior painted surfaces with a damp cloth or mild detergent If you are using a detergent test a small inconspicuous area to make sure it does not damage the finish How to Listen for Abnormal Noise or Vibration You should become familiar with normal operating noises Being able to recognize changes f
34. any doubt please call TestEquity before proceeding The correct values are documented in the Series F4 Controller Setup Parameters section of this manual CAUTION NEVER select Full Defaults in the Series F4 Factory Test Menu This will erase all the correct values which are documented in the Series F4 Controller Setup Parameters section of this manual Security Features The Series F4 Controller has several levels of security to prevent unauthorized users from changing critical configuration parameters Only the Set Point and Profile menus have Full Access TestEquity has configured the security of all other menus to Password and have protected them with a password TestEquity does not recommend that these security levels be changed for most applications However there will be times when entry into these menus is necessary For example you may need to gain access to Setup Page in order to change from C to F display or to change the time or date You must call TestEquity at 877 512 3457 or 805 480 0638 to obtain the password TestEquity 123C Temperature Chamber Page 4 1 c hapter 4 F4 Temperature Controller F4 Controller Keys and Displays Lower Display Displays information about the setup operation and programming of the controller Cursor Indicates selected parameter or present value in memory Moves via the four navigation keys Profile Indicator Light Lit when a r
35. arized plug To prevent a shock hazard DO NOT defeat the ground or polarization feature This device MUST be plugged DIRECTLY into a properly grounded and polarized NEMA 5 20R receptacle Due to high current demand on start up use of an extension cord is NOT recommended CAUTION The minimum clearance you should allow for proper ventilation around the chamber must be at least 6 from both the left and right side and 12 from the rear CAUTION This chamber is designed for operation in a conditioned laboratory environment Operation above 30 C 85 F or below 16 C 60 F ambient room temperature is NOT recommended TestEquity 123C Temperature Chamber Page 1 1 Chapter 1 Safety Operation Safety Notices CAUTION CAUTION CAUTION CAUTION CAUTION CAUTION CAUTION CAUTION Page 1 2 The Series F4 User s Manual is a general manual and is written by the manufacturer Watlow for a wide variety of applications and configurations Not all features or functions are applicable Only the capabilities of a model F4SH CKA6 01 as described on page A 7 of the Series F4 User s Manual are applicable Cascade Control as described on page 3 6 of the Series F4 User s Manual is not applicable in this configuration The Retransmit function is available as an option The Series F4 Alarm functions are NOT used in the chamber s safety system and are
36. ation Offset parameter Page 8 18 TestEquity 123C Temperature Chamber Chapter 9 Warrant Chapter 9 Warranty TestEquity LLC Limited Warranty TestEquity LLC TestEquity warrants Environmental Chambers Equipment manufactured by TestEquity and supplied under this contract to be free from defects in materials and workmanship under normal use and proper maintenance TestEquity will repair or replace any defective part for a period of THREE YEARS from the date of invoice TestEquity reserves the right to require any defective part be returned freight prepaid to TestEquity s factory or to inspect any defective part at the Purchaser s site TestEquity shall have sole discretion to determine whether any part is defective and whether any defective part will be repaired or replaced This limited warranty shall extend to any standard chamber accessory and component part which is normally sold by TestEquity Non standard accessories and component parts specified by the Purchaser shall be warranted only to the extent of the original manufacturer s warranty if any exists If the repair or replacement is performed in the FIRST YEAR from the date of invoice TestEquity will also pay for the labor associated with the repair at the Purchaser s site subject to TestEquity s prior approval During the SECOND and THIRD YEAR of the warranty period Purchaser will be responsible for the installation and cost of installation of replacement or re
37. ature Chamber Page 4 11 Chapter 4 F4 Temperature Controller Programming Hints e The next to last step establishes a condition to end on For example you may want to end the program by holding at 23 C so this step would be to go to 23 C e The final step of every profile is End You cannot delete an End step or change it to another type but you can insert new steps before it e TestEquity recommends having the end step type to be Hold or Idle e NEVER use an end step type of All Off or Control Off This does not turn off the chamber fan The chamber temperature can reach 55 C just from heat generated by the fan or even higher if your test sample is energized e When the CONDITIONING Switch is in the EVENT 1 position you can enable and disable all chamber functions through Event 1 Event 1 is named COND in the profile menu All steps except the next to last step should have the COND event On It should be Off in the next to last step and the end step should be Idle Profile Key The Profile key e Initiates the profile mode e Initiates the Hold profile state e Initiates the Resume profile command e Initiates the Terminate profile command e The Profile Key functions only from the Main Page How to Start a Profile To initiate the profile mode press the Profile key and answer the questions that follow Press the Profile key to enter the Profile Control Start a Profile menu e The Pro
38. ctually assumes the risk of damage to the Equipment in shipment 2 Defects or damages arising out of or as the result of mishandling modification or improper start up installation or maintenance of the Equipment including start up installation or maintenance not in accordance with TestEquity s written procedures 3 Defects or damages resulting from or arising out of abuse misuse neglect intentional damage accident fire flood earthquake or any other act of God This warranty as to Equipment is LIMITED to repair or replacement of parts or Equipment in the determination of TestEquity LLC THE FORGOING LIMITED WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES INCLUDING THE IMPLIED WARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE AND MERCHANTABILITY TestEquity LLC DISCLAIMS ANY LIABILITY FOR ANY DAMAGES RESULTING FROM DELAY OR LOSS OF USE IN SERVICE OR REPAIR OR FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THE EQUIPMENT EXCEPT AS STATED IN THIS PARAGRAPH This limited warranty cannot be modified in any way except in writing by both TestEquity and Purchaser Invalidation of any one or more of the provisions of this limited warranty shall in no way affect any of the other provisions hereof which remain in full force and effect This limited warranty shall be extended only to the first Purchaser of this Equipment and is not transferable TestEquity 123C Temperature Chamber Page 9 1
39. des Both Logic Open on Alarm Show Message Yes on Main Page Main Page Go to Setup Alarm Output 2 Choose to Name Yes Name TEMP ALARM Type Process Source Input 1 Latching Alarm Latches Silencing Yes Alarm Hysteresis 1 7 C 3 0 if F Sides Both Logic Open on Alarm Show Message Yes on Main Page Retransmit Output if retransmit option is ordered Main Page Go to Setup Retransmit Output 1 Retransmit Source Set point 1 Analog Range 0 5V Low Scale 75 0 C 103 0 if F High Scale 175 0 C 347 0 if F Scale Offset 0 0 Main Page Go to Setup Retransmit Output 2 Retransmit Source Input 1 Analog Range 0 5V Low Scale 75 0 C 103 0 if F High Scale 175 0 C 347 0 if F Scale Offset 0 0 Digital Output Main Page Go to Setup Digital Output 1 Name Yes Name Digital Out CONDITION Function Event Output Main Page Go to Setup Digital Output 2 Name No Function Event Output Main Page Go to Setup Digital Output 3 Name Yes Name Digital Out PURGE Function Event Output Main Page Go to Setup Digital Output 4 7 Name No Function Event Output Main Page Go to Setup Digital Output 8 Name No Function Compressor Comp On Pwr 2 Comp Off Pwr 2 Comp Off Delay 60 sec Comp On Delay 10sec Communications Menu Main Page Go to Setup Communications Baud Rate 9600 Address 1 Custom Main Page Main Page Go to Setup Custom Main Page Pl Current File P2 Current Step P3 Set Po
40. dically How often should I charge the refrigeration system This chamber uses a closed loop refrigeration system Just like your refrigerator at home it does not need periodic charging If the charge is low this means that there is a leak Leaks should be repaired before recharging What kind of Freon does the chamber use The word Freon is a DuPont registered trade name for their CFC based refrigerants and is incorrectly used as a generic term for refrigerants TestEquity chambers do not use CFC based refrigerants The high stage system uses R 404A which is also known as DuPont Suva HP62 The low stage system uses R 508B which is also known as DuPont Suva 95 TestEquity 123C Temperature Chamber Page 6 3 Chapter 7 Specifications Chapter 7 Specifications Model 123C Chamber Specifications Temperature Range 68 C to 175 C Control Tolerance 0 5 C Measured at the control sensor after stabilization Uniformity 0 5 C Variations throughout the chamber after stabilization Live Load Capacity 23 C 0 C 40 C 55 C 65 C 500 W 400 W 225 W 175 W 100 W Cool Down Transition Time End Temp Start Temp to gt 23 C 0 C 40 C 55 C 65 C 68 C 23 C 6 min 31 min 51 min 68 min ultimate 50 C 7 min 16 min 44 min 62 min 82 min ultimate 85 C 18 min 28 min 54 min 82min 101 min ultimate 150 C 43 min 54 min 87min 108min 129min ultimate Heat Up Transition Time End Temp Start Temp to gt
41. e limits are exceeded The safety contacts are rated as follows Resistive 10 A 250 VAC or 10 A 28 VDC Inductive 7 A 250 VAC To access the safety contacts 6 Unplug the chamber from the power source 7 Remove the top cover 8 Locate the Terminal Strip on the electrical sub panel as indicated below Connections to the safety contacts are at terminals Al and A2 A2 A1 id iejelelelelelelelelelelelecieielelelelelelolololelelaKO GROUND Heo amp 24 voc TT TT TT TT THT at c2 Figure 5 2 Location of Safety Contact Connections on the Electrical Sub Panel TestEquity 123C Temperature Chamber Page 5 3 Chapter 6 Frequently Asked Questions Chapter 6 Frequently Asked Questions I need to send the chamber outside North America Will it work with their power Outside North America most countries have 50 Hz Nominal voltages in are typically 220 V to 240 V You CANNOT simply step the voltage down to 120 V because the compressors have a 50 Hz rating of 100 V nominal 95 V min to 110 V max Why does my chamber heat or cool slower than the published specifications Performance is significantly affected by the characteristics of your test sample Factors include size weight material shape and power dissipation if energized The test sample should be placed in the chamber in a manner that allows for air circulation You should not place the test sample directly on the chamber floor It should be placed o
42. em requirements and to perform optimally over a wide range of operating conditions Improper modifications to these setup values can result in erratic performance and unreliable operation Setup examples in the Series F4 User s Manual are NOT applicable to this chamber Do not attempt to modify the setup values unless you thoroughly understand what you are doing If there is any doubt please call TestEquity before proceeding CAUTION The Series F4 User s Manual is a general manual and is written by the manufacturer Watlow for a wide variety of applications and configurations Not all features or functions are applicable Only the capabilities of a model F4DH CKCC 01 as described on page A 7 of the Series F4 User s Manual are applicable Cascade Control as described on page 3 6 of the Series F4 User s Manual is not applicable in this configuration The Retransmit function is available as an option CAUTION The Series F4 Alarm functions are NOT used in the chamber s safety system and are NOT connected TestEquity does NOT recommend using the Series F4 alarm function as the main protection device The independent EZ Zone Limit Controller functions as the main protection device CAUTION NEVER select Full Defaults in the Factory Test Menu Full Defaults are NOT the TestEquity configuration parameters for this chamber If you select Full Defaults you must reconfigure all
43. emperature set point You are now back to the Main Page Main Page Static Set Pointi gt SP1 85 0 C 85 0 C DigitalOut A lt v Adjusts Value lt 4 Back gt Next Power1 50 Page 4 4 TestEquity 123C Temperature Chamber Chapter 4 F4 Temperature Controller System Enable Function The chamber can be configured to enable or disable all chamber functions through Event 1 Digital Output 1 in the F4 Controller The Conditioning Switch needs to be in the Event 1 position This configuration may be desirable if you want to turn off all chamber function at the end of a programmed profile or through the communications interface All chamber functions will be disabled if Event 1 is Off If Event 1 is On all chamber functions will be enabled NOTE The Modbus register to program Digital Output 1 in static set point mode is 2000 NOTE In the Profile Create and Edit menus Digital Output 1 is named CONDITION Remember to set CONDITION to On in all programmed steps when the chamber is to be operational To Enable or Disable all chamber functions in static set point mode 1 The F4 Temperature Controller must first be on the Main Main Page Page Press the Aor WV key to position the Cursor next to SP1 85 0 C A the DigitalOut prompt gt DigitalOut E Power 1 50 V 2 Press the key once You will see Choose Event Output_ Choose Event Output prompt in the lower gt Event Output1 display Press the Aor WV key to
44. ent unauthorized users from changing critical configuration parameters Only the Set Point and Profile menus have Full Access TestEquity has configured all other menus to Password and have protected them with a password TestEquity does not recommend that these security levels be changed for most applications However there will be times when Full Access is necessary For example you may need to gain access to Setup Page in order to change from C to F display or to change the time or date You must call TestEquity at 877 512 3457 or 805 480 0638 to obtain the password Set Lockout Menu Main Page Go to Factory Set Lockout Menu Lock Set Point Full Access Oper Autotune PID Hidden Oper Edit PID Password Oper Alarm SP Hidden Profile Full Access Setup Password Factory Password TestEquity 123C Temperature Chamber Page 8 17 Chapter 8 Maintenance EZ Zone Limit Controller Setup Parameters CAUTION The EZ Zone Limit Controller has been properly configured by TestEquity to match the chamber s system requirements Improper modifications to these setup values can result in erratic performance and unreliable operation Do not attempt to modify the setup values unless you thoroughly understand what you are doing If there is any doubt please call TestEquity before proceeding
45. erformance How to Inspect the Electrical Compartment How to Clean the Condenser How to Verify the Temperature Calibration Theory of Operation Overview Air Heating System Refrigeration System Troubleshooting Refrigeration System Charging Instructions R 404A High Stage Charge R 508B Low Stage Charge Recommended Spare Parts Major Electrical Parts Major Refrigeration Parts General Parts Series F4 Controller Setup Parameters Series F4 Setup Parameters Series F4 Operations Parameters Series F4 Set Lockout Parameters EZ Zone Limit Controller Setup Parameters Setup Menu Operations Menu Chapter 9 Warranty Chapter 10 Drawings Chapter 1 Safety Chapter 1 Safety Instructions Introduction Follow all CAUTION notices to prevent damage to the chamber or your test sample Failure to follow all CAUTION notices may void your warranty CAUTION may also indicate a potentially hazardous situation which if not avoided may result in minor or moderate personal injury WARNING indicates a potentially hazardous situation which if not avoided could result in death or serious injury The safety alert symbol A precedes a general CAUTION or WARNING statement The electrical hazard symbol A precedes an electric shock hazard CAUTION or WARNING statement Installation Safety Notices A WARNING The power cord is equipped with a NEMA 5 20P grounded pol
46. es WARNING This chamber operates at extreme temperatures Avoid contact with air objects and surfaces that are hot or cold to prevent severe burns or frostbite Protective gloves are recommended CAUTION If your test sample is energized it may be capable of raising the workspace temperature beyond safe limits This could occur if your test sample exceeds the live load rating of the chamber or if the chamber s refrigeration system fails This chamber has a set of contacts that can be used to remove power to your test sample if the Limit Controller s temperature limits are exceeded CAUTION To prevent damage to your test sample and the chamber s compressors do not exceed the live load rating of the chamber Live Load Capacity for Model 123C Temp 23 C 0 C 40 C 55 C 65 C Watts 500W 400W 225W 175 W_ 100W Performance Considerations The performance of all chambers is significantly affected by the characteristics of your test sample Factors include size weight material shape and power dissipation if energized The test sample should be placed in the chamber in a manner that allows for air circulation The air plenum is located on the back wall of the chamber where air is sucked in from the bottom and exits from the top You should not place the test sample directly on the chamber floor It should be placed on the shelf Multiple test samples should be distributed throughout the chamber to ensure even airflow and
47. es You must provide power from an external source A 1 2 inch conduit hole is provided on the back panel to route your wires through Use the appropriate wire cable management fittings m Figure 4 3 Event Relay Location Page 4 6 TestEquity 123C Temperature Chamber Chapter 4 F4 Temperature Controller Purge Optional Optional GN gaseous nitrogen Purge or optional Dry Air Purge can be used to reduce to possibility of condensation in the chamber at low temperatures CAUTION Nitrogen cannot be detected by human senses Nitrogen is non toxic However if adequate ventilation is not provided nitrogen will displace air This can cause dizziness unconsciousness or death without warning The chamber must be located in a well ventilated area Do not open the chamber door with the GN flowing GN2 Gaseous Nitrogen Installation Option TE 1239 Connect a supply of GN with a maximum pressure of 100 psig to the 1 4 inch FPT fitting which is designated PURGE on the rear panel Dry Air Installation Option TE 0017 Connect the hose from the Dry Air system to the fitting which is designated PURGE on the rear panel Connect a supply of compressed air to the 3 8 inch FPT shutoff valve of Dry Air system This system requires a 5 cfm supply air flow rate at 100 psig 175 psig max Purge Inlet from Dry Air System Connect to PURGE fitting on chamber Compressed Air Inlet to Dry Air System Shutoff valve on
48. file Indicator will begin blinking vV No A Yes e Press the A key for Yes Select the desired stored profile Start Profile e Press the Aor F to scroll through the list of Profilet stored profiles gt Profile2 i e Press to select the desired profile Profile3 y Select the desired step to start on Start e Press the Aor V to scroll through the list of steps gt Step 1 Ramp Time Generally you would start on Step 1 but you can Step 2 Soak E also start on any other step Step 3 Ramp Time h e Press gt to select the desired start step and the profile will begin to run The Profile Indicator will stay lit Main Page gt Profile 2 Running Step 1 SP1 85 0 C Y While running a profile the Main Page on the lower display will keep you informed about the progress of the profile Use the Aor V key to scroll through the list of running profile parameters You cannot manually change any operating condition while the profile is running Page 4 12 TestEquity 123C Temperature Chamber Chapter 4 F4 Temperature Controller How to Hold Resume a Running Profile To Hold a running profile press the Profile key to enter the Profile Control menu e Then press Aor V to make your choice for Hold e Press to select Hold e The Main Page will appear with a profile status of Holding The Profile Indicator will be off Hold Profile _ Don t Hold gt Hold Terminate Main Page gt Profile 2 Holding Step 2 SP1 23 0 C V
49. ght cycles ON OFF within approximately 12 minutes tegen a 6 The chamber temperature should slowly increase and stabilize to 85 C It should NOT overshoot beyond 85 C by more than a few tenths of a degree and the compressors should NOT need to turn ON in order to maintain 85 C 7 After stabilization the chamber temperature should vary no more than 0 2 C or a total of 0 4 C 8 Let the chamber stay at 85 C for two hours 9 After two hours at 85 C set the F4 Controller Set Point 1 to 65 C 10 The high stage compressor should turn ON within a few seconds Then the low stage compressor should turn ON within approximately 30 seconds the Cool Light should be ON continuously and the Heat Light should be OFF 11 The chamber should cool down to about 60 C and begin controlling Cool Light cycles ON OFF within 1 hour and 40 minutes 100 minutes 12 The chamber temperature should slowly decrease and stabilize to 65 C It should NOT undershoot beyond 65 C by more than a few tenths of a degree and the compressors should NOT need to turn OFF in order to maintain 65 C 13 After stabilization the chamber temperature should vary no more than 0 5 C or a total of T C 14 Set the F4 Controller Set Point 1 to 23 C The chamber should begin to heat up The compressors should turn off within approximately 1 minute 15 This concludes the chamber performance verification tests 16 Let the chamber hea
50. heated above 0 C the ice or frost will turn into water The fitting accommodates a 42 inch male pipe thread The chamber drain water is not under pressure and is fed by gravity Therefore it must empty into an open floor drain Alternatively the chamber drain can empty into a condensate pump You can purchase a condensate pump from suppliers such as Grainger www grainger com Page 2 2 TestEquity 123C Temperature Chamber Chapter 3 Operation Chapter 3 Operation Introduction The Front Panel Switches control power to the chamber The Front Panel Lights provide indication of heat and cool functions The EZ Zone Limit Controller is a protection device It turns the chamber OFF if the workspace temperature exceeds either a high temperature or low temperature limit set point The F4 Controller controls the temperature of the chamber It can function as either a single set point controller or as a programmable profile controller The F4 Controller automatically turns the refrigeration system on or off based on the demand for cooling Summary of Chamber Operation Turn the Power Switch ON Enter the appropriate high and low temperature safety limits on the Limit Controller Enter the desired set points or program on the F4 Controller Load your test sample in the chamber Turn the CONDITIONING Switch ON Alternatively turn the CONDITIONING Switch to the EVENT 1 position and turn EVENT 1 on the F4 controller ON OE ee
51. ing and refrigeration systems and void the warranty You need a gravity convection oven for that kind of test TestEquity 123C Temperature Chamber Page 6 1 Chapter 6 Frequently Asked Questions How accurate is the chamber That s a loaded question There is no chamber accuracy specification as such The answer requires an understanding of several performance parameters Control Tolerance The F4 Controller uses a thermocouple control sensor which is located in the discharge airflow Control tolerance is a measure of how much the temperature varies after stabilization at the control sensor It is a measure of the relative variations NOT the absolute accuracy of the readout The control tolerance specification for this chamber is 0 5 C or a total of 1 C For example the temperature set point may be 25 0 C The actual temperature varies between 25 4 C and 24 5 C This corresponds to 0 4 C and 0 5 C or a total of 0 9 C of RELATIVE variations These specifications are for an empty chamber The addition of a test sample may effect the control variations In some instances the test sample will reduce these variations Uniformity Also known as Gradients This is a measure of variations in temperature at different locations throughout the chamber interior at the same time after stabilization The uniformity specification for this chamber is 0 5 C or a total of 1 C when measured at least 2 away
52. int 1 P4 Step Type P5 Target SP1 P6 Wait For Status P7 Jump Count P8 Time Remaining P9 Digital Outs P10 Power 1 P11 Time P12 Date P13 Custom Message 1 P14 None P15 None P16 None Process Display Menu Main Page Go to Setup Process Display Choose Input 1 only Static Message Menu Main Page Go to Setup Static Message Message 1 TESTEQUITY 123C Page 8 16 TestEquity 123C Temperature Chamber Chapter 8 Maintenance Series F4 Operations Parameters PID Set Channel 1 Main Page Go to Operations Edit PID PID Set Channel 1 PID Set 1 5 Proportional Band A 5 0 C 9 0 if F Reset A 0 10 min Rate A 0 00 min Dead Band A 0 0 C Proportional Band B 5 0 C 9 0 if F Reset B 0 10 min Rate B 0 00 min Dead Band B 0 0 Alarm Setpoints Menu Main Page Go to Operations Alarm Setpoints Alarm1 Alarm1 Low SP 75 0 C 103 0 if F Alarm1 High SP 175 0 C 347 0 if F Main Page Go to Operations Alarm Setpoints Alarm2 Alarm2 Low SP 75 0 C 103 0 if F Alarm2 High SP 175 0 C 347 0 if F NOTE The Series F4 Alarm functions are NOT used in the chamber s safety system and are NOT connected TestEquity does NOT recommend using the Series F4 alarm function as the main protection device The independent EZ Zone Limit Controller functions as the main protection device Series F4 Set Lockout Parameters The Series F4 Controller has several levels of security to prev
53. isplay Make sure it is higher than your actual chamber temperature set point to prevent nuisance tripping 5 Press the RESET Key to return to the Home Page The upper display will show the actual chamber temperature while the lower display will show as long as the limits are not exceeded Resetting an Out of Limit Condition If the limit is exceeded the Limit Controller will flash high limit or low limit in the upper display and in the lower display alternating with the actual chamber temperature in the upper display and in the lower display It will also shut down all chamber functions The Limit Controller cannot be reset until the temperature returns to within the limit set points Then you must press the RESET or EZ Key to resume normal operation Silencing the Audible Alarm Turning off the Conditioning switch on the chamber front panel lets you temporarily turn off the Audible Alarm even though the High or Low Limit condition may still exist Page 5 2 TestEquity 123C Temperature Chamber Chapter 5 Limit Controller Protecting an Energized Test Sample If your test sample is energized it may be capable of raising the workspace temperature beyond safe limits This could occur if your test sample exceeds the live load rating of the chamber or if the chamber s refrigeration system fails This chamber has a set of safety contacts that can be used to remove power to your test sample if the Limit Controller s temperatur
54. ll under warranty these problems should be resolved before being placed into storage since the warranty period starts from the date of shipment The chamber should be stored in a conditioned environment Do not store it outside or where it will be subjected to dirt or excessive moisture I haven t used the chamber for a while Is there anything I should do to prepare it for operation Perform ALL the steps in the Preventive Maintenance Schedule before placing the chamber back into service This will ensure that nothing has been damaged and that a leak has not developed Page 6 2 TestEquity 123C Temperature Chamber Chapter 6 Frequently Asked Questions Can the person who services our air conditioning also service the chamber Probably not Most air conditioning mechanics are not familiar with low temperature cascade refrigeration systems While this chamber is relatively easy to maintain and repair most air conditioning mechanics do not have the necessary refrigerants and may not be familiar with the microprocessor based controls This chamber should only be serviced by a qualified mechanic that is familiar with low temperature cascade refrigeration systems Call TestEquity to recommend one in your area or to check if the one you would like to use is qualified Can Should I put a filter in front of the condenser air inlet No TestEquity does not recommend this Just follow the maintenance procedures and clean the condenser fins perio
55. ls Inspect for signs of water leaks Inspect for signs of refrigeration tubing abrasion Inspect for oil around refrigeration valves fittings and joints This may be a sign of leaks Inspect for loose hardware and tighten as required SD PY Mer Inspect for signs of insect or rodent infestation Yes it does happen TestEquity 123C Temperature Chamber Page 8 3 Chapter 8 Maintenance How to Verify the Performance These tests verify the performance of the heating cascade refrigeration mode electrical controls F4 Controller and air circulation systems The chamber should meet all published performance specifications if all of these tests are successfully passed These tests assume that the F4 Controller s setup and tuning values have not been changed from the values as shipped from TestEquity Also the EZ Zone Limit Controller high limit must be set to over 85 C 88 C would be fine and the low limit set to 75 C If the chamber fails any of these tests it should be removed from service to prevent further damage until the cause of the problem is determined and resolved The chamber interior should be empty and at ambient temperature approximately 23 C Turn ONLY the Power Switch ON Set the F4 Controller Set Point 1 to 85 C Then turn the Conditioning Switch ON The Heat Light should be ON continuously and the Cool light should be OFF The chamber should heat up to about 80 C and begin controlling HEAT Li
56. me gt gt 00 00 01 Ramp Time 00 00 01 Soak 00 30 00 Ramp Time 00 00 01 Soak 00 30 00 Jump End Idle 23 0 Step Description Establishes a recommended initialization step Goes to 23 C as quickly as possible Goes to 40 C as quickly as possible Will hold for 30 minutes Time will not start until chamber reaches 37 C within the 3 Guaranteed Soak Band Goes to 85 C as quickly as possible Will hold for 30 minutes Time will not start until chamber reaches 82 C within the 3 Guaranteed Soak Band Jumps back to step 2 Repeats this 3 times for a total of 4 cycles End of program Controller returns to a 23 C manual set point Test sample is remains OFF via Event 1 Notes i Guaranteed Soak Band is set at the factory for 3 0 C Can be changed in the System Menu Means no entry or selection is required Just scroll through this prompt to the next prompt Means prompt does not show for this step type Page 4 15 TestEquity 123C Temperature Chamber Chapter 4 F4 Temperature Controller 50 C to 0 C 1 C minute ramp 1 hour soak time 100 cycles End with return to 23 C manual set point Turn chamber off at end of profile NOTE The CONDITIONING Switch must be in the EVENT 1 position to turn the chamber On Off in a profile Profile Example 2 Step Step Date Choose Digit Out Time Chi PID Guar Jump to End Idle Number Type Day Time Waitfor COND 2 3 4 5 H M S Rate SP Set So
57. n the shelf Multiple test samples should be distributed throughout the chamber to ensure even airflow and minimize temperature gradients If necessary additional shelves should be used to evenly distribute the load You can determine if the chamber is operating properly by following the procedure in How to verify the chamber performance How can I modify the chamber to cool faster Unfortunately there is little you can do to improve upon the designed in performance TestEquity does NOT recommend using CO2 or LN2 in this chamber to achieve faster cooling due to reliability and safety considerations so it is NOT an available option Modifying the chamber to add CO2 or LN2 will void the warranty Why is there water ice snow in the chamber Any time the ambient air is subjected to temperatures below the dew point moisture will condense out of the air The effect is ice or frost during low temperature operation When the chamber is heated above 0 C the ice or frost will turn into water To avoid moisture condensation make sure the port plugs are inserted at all times Also avoid opening the chamber door while the chamber is operating at temperatures below room ambient When a low temperature test is completed warm the chamber to at least room ambient before opening the chamber door and before removing your test sample My test specification requires convection heat only Can I turn the circulator motor off NO This will damage the heat
58. ne User s Manual CAUTION The EZ Zone User s Manual is a general manual and is written by the manufacturer Watlow for a wide variety of applications and configurations Not all features or functions are applicable Only the capabilities of a model PM6LIAJ AAAABAA are applicable CAUTION The EZ Zone Limit Controller has been properly configured by TestEquity to match the chamber s system requirements Improper modifications to these setup values can result in unreliable and unsafe operation Do not attempt to modify the setup values unless you thoroughly understand what you are doing The correct values are documented in the EZ Zone Limit Controller Setup Parameters section of this manual CAUTION Always verify that the Limit Controller s high and low limits are set to temperatures that are appropriate for your test sample CAUTION If your test sample is energized it may be capable of raising the workspace temperature beyond safe limits This could occur if your test sample exceeds the live load rating of the chamber or if the chamber s refrigeration system fails This chamber has a set of contacts that can be used to remove power to your test sample if the Limit Controller s temperature limits are exceeded TestEquity 123C Temperature Chamber Page 5 1 Chapter 5 Limit Controller Limit Controller Keys and Displays Temperature Units Indicator Indicates whether the temperature is Upper
59. ompartment e Verify the chamber performance TestEquity 123C Temperature Chamber Page 2 1 Chapter 2 Installation Installation Location The chamber will produce a significant amount of heat during normal operation Locate the chamber in a room with adequate ventilation to prevent excessive heat build up The chamber generates a heat load of up to 5 000 btuh during a continuous cool down from a high temperature The chamber must be on a solid and level floor Allow enough space around the chamber to permit serviceability and the removal of the service access panels which are located on each side and the rear CAUTION The minimum clearance you should allow for proper ventilation around the chamber must be at least 6 from both the left and right side and 12 from the rear CAUTION This chamber is designed for operation in a conditioned laboratory environment Operation above 30 C 85 F or below 16 C 60 F ambient room temperature is NOT recommended Condensate Drain The chamber has a condensate drain connection on the rear of the chamber This provides a way to remove condensate that may accumulate in the chamber during low to high temperature cycling or when the refrigeration system runs to maintain moderate temperatures Any time the ambient air is subjected to temperatures below the dew point moisture will condense out of the air The effect is ice or frost during low temperature operation When the chamber is
60. paired parts and the cost of refrigerant Purchaser shall notify TestEquity in writing of any alleged defect within 10 days after its discovery within the warranty period TestEquity reserves the right to satisfy the labor portion of this limited warranty either through its own service personnel or an authorized agent In order to provide expeditious service TestEquity reserves the right to satisfy its limited warranty obligation by sending replacement parts to be installed by the Purchaser if they can be installed easily without special tools or training TestEquity reserves the right to satisfy this limited warranty by requiring the Purchaser to return the Equipment to TestEquity when such return is feasible The following parts are excluded from this limited warranty and are sold as is or are considered expendable interior light bulb viewing window paint and cosmetic surface finishes and treatments port plugs refrigerant This limited warranty shall extend in full to Equipment installed within continental United States and Canada For all other locations Purchaser is responsible for all labor costs for repairs or parts installation and for all shipping costs associated with providing replacement parts This limited warranty does not cover 1 Defects or damages arising as the result of shipment by common carriers or private transportation unless TestEquity undertakes shipment and transportation of the Equipment to Purchaser s site or contra
61. r Terminate was selected as the Power Out action If Profile Reset or Go to Idle Set Point was selected the controller will take those actions A pop up message will warn of this when the 21st jump step is programmed End Step End terminates the profile in a chosen state All profiles must have an End step It cannot be deleted or changed to another step type Define the End by choosing Hold Control Off All Off or Idle end state NOTE TestEquity recommends having the end step type to be Hold or Idle TestEquity does NOT recommend using an end step type of Control Off or All Off This does not turn off the chamber fan The chamber temperature can reach 55 C just from heat generated by the fan and interior light or even higher if your test sample is energized Wait For step option The use of Wait For in a profile is optional Ramp Time Ramp Rate and Soak steps can be programmed to wait for a particular chamber temperature or event input condition The wait conditions must be satisfied before the time clock and the step activity proceeds Digital inputs must first be configured in the System Menu as Wait For Events with the condition to be met also specified Then to wait for this digital input you must specify On meaning the condition as configured in the Setup Page or Off meaning the opposite of that condition The digital inputs have been configured to Off by TestEquity so this option will not show unless reconfigured Guaranteed
62. r of the low stage The high stage uses refrigerant R 404A High pressure liquid refrigerant is fed from the condenser part of 5 through the filter drier 6 sight glass 7 to the thermostatic expansion valve 20 The thermostatic expansion valve controls the feed of liquid refrigerant to the evaporator circuit of the cascade condenser and reduces the pressure of the refrigerant to the evaporating pressure The refrigerant vapor travels through the suction line to the compressor part of 5 suction inlet The compressor takes the low pressure vapor and compresses it increasing both the pressure and the temperature The hot high pressure vapor is forced out of the compressor discharge valve and into the condenser As the high pressure vapor passes through the condenser it is cooled by a fan which blows ambient air across the finned condenser surface The vapor condenses into a liquid and the cycle is repeated The hot gas regulator 9B is adjusted to keep the suction pressure at 5 to 8 PSIG during light load conditions The Low Stage uses refrigerant R 508B High pressure liquid refrigerant is fed from the condenser circuit of the cascade condenser 21 through the filter drier 34 liquid line solenoid valve 18A 19A to the capillary tube strainer assembly 24 and 25 The capillary tube feeds the finned evaporator coil 26 which is located in the air plenum where heat is absorbed to provide a cooling effect within the chamber The refrige
63. r repeated tests and should be considered expendable Page 3 4 TestEquity 123C Temperature Chamber Chapter 4 F4 Temperature Controller Chapter 4 F4 Temperature Controller Introduction The Series F4 Controller can function as either a single set point controller static mode or as a programmable profile controller A four line LCD display facilitates setup and programming and presents informative messages about status error and alarm conditions An Information Key gives you quick information about the pages menus parameters and values as well as error and alarm conditions if they occur The user interface is organized into five pages of menus CAUTION The Series F4 Alarm functions are NOT used in the chamber s safety system and are NOT connected TestEquity does NOT recommend using the Series F4 alarm function as the main protection device The independent EZ Zone Limit Controller functions as the main protection device CAUTION The Series F4 Controller has been properly configured by TestEquity to match the chamber s system requirements and to perform optimally over a wide range of operating conditions Improper modifications to these setup values can result in erratic performance and unreliable operation Do not attempt to modify the setup values unless you thoroughly understand what you are doing Setup examples in the Series F4 User s Manual are NOT applicable to this chamber If there is
64. rant vapor travels through the suction line to the compressor 1 suction inlet The compressor takes the low pressure vapor and compresses it increasing both the pressure and the temperature The hot high pressure vapor is forced out the compressor discharge valve and into the desuperheater 2 As the high pressure vapor passes through the desuperheater it is air cooled to remove some sensible heat Next the vapor goes through the oil separator 3 which returns any entrained oil back to the compressor s TestEquity 123C Temperature Chamber Page 8 7 Chapter 8 Maintenance crankcase The vapor flows through the condenser circuit of the cascade condenser where it is condensed back into a liquid During a high temperature pull down or a continuous bypass condition it is possible for excessive hot gas to return to the compressor The suction line cooling thermostatic expansion valve 10 senses the suction line temperature and injects liquid refrigerant to cool the hot gas within safe limits The low stage discharge pressure is kept within safe limits with a bypass pressure switch 14 If the discharge pressure exceeds 280 PSIG the bypass pressure switch will energize the bypass solenoid valve SV5 or 18B 19B This will dump refrigerant vapor into the expansion tanks 11 This refrigerant is slowly returned from the expansion tanks to the suction line through a strainer capillary tube 22 23 The expansion tank also provides
65. rculator fan is ON the Heat Solid State Relay SSR1 is defective open Heat Limiter HL is open Heater HT1 is open light is ON Heats up too slow Does not meet published Chamber interior is overloaded specifications Circulator motor is not turning Port plug is not in port Verify that input voltage is within tolerance Heat is on all the time If F4 Controller light 1A is OFF the Heat light is ON Solid State Relay SSR1 is defective shorted Defective output 1A on F4 Controller Does not cool at all If F4 Controller light 1B is ON the DigitalOut prompt shows an 8 both compressors are OFF If F4 Controller light 1B is ON the Cool light is ON Compressors are ON Pressure switch PS1 or PS2 is tripped Solenoid valve SV1 may be defective in closed position Refrigeration leak plugged capillary tubes R 404A pressure switch DPS1 trips on rear left side Trips after operating for a while Trips immediately after turn on Ambient temperature may be too high over 90 F Dirty condenser inadequate clearance from back of chamber to wall Low charge leak R 404A sightglass has bubbles or does not look full During all running conditions Only when cool light is cycling Low charge leak No problem This is normal Cools too slowly or does not reach 68 C R 508B standby is ok no bubbles in R 404A sightglass Chamber interior i
66. riate for your test sample If your test sample is energized it may be capable of raising the workspace temperature beyond safe limits This could occur if your test sample exceeds the live load rating of the chamber or if the chamber s refrigeration system fails This chamber has a set of contacts that can be used to remove power to your test sample if the Limit Controller s temperature limits are exceeded To prevent damage to your test sample and the chamber s compressors do not exceed the live load rating of the chamber TestEquity 123C Temperature Chamber Chapter 1 Safety WARNING Do NOT put items in the chamber that could burn or explode at high temperatures This chamber uses open wire heating elements which generate surface temperatures over 1000 F This is NOT an explosion proof chamber WARNING Do NOT put items in the chamber which can emit corrosive vapors or substances WARNING This chamber is NOT a curing oven There are NO provisions for venting fumes A WARNING The chamber door must remain closed while the chamber is operating If you need to open the door while the chamber is operating wear safety goggles to prevent the high velocity airflow from blowing particles or objects into your eyes WARNING This chamber operates at extreme temperatures Avoid contact with air objects and surfaces that are hot or cold to prevent severe burns or frostbite Protective gloves are recommended
67. ring a WaitFor step Jump Count Displayed if running a profile the number of jumps completed Time Remaining Displayed if running a profile the remaining time of the current step DigitalOut Status of the event outputs 1 to 8 An 8 indicates when cooling system is ON Power The of throttle of the heat positive number or cool negative number output Date Real time clock date Time Real time clock time TESTEQUITY 123C Identifies the chamber model number Go to Operations Access to Operations Page Go to Profiles Access to Profiles Page Go to Setup Access to Setup Page Not displayed if running a profile Go to Factory Access to Factory Page Not displayed if running a profile TestEquity 123C Temperature Chamber Page 4 3 Chapter 4 F4 Temperature Controller Static Set Point Control The Temperature Controller is in Static Mode when it is not controlling a Profile When in a Static Mode the Profile Indicator Light is off see Fig 4 1 The Upper Display shows the actual chamber workspace temperature The Static Set Point SP1 prompt is accessed from the Main Page To enter a Static Set Point Press the Aor V key to position the Cursor next to the SP1 prompt You may already be at this prompt Press the gt key once You will see Static Set Point 1 in the lower display with the current set point indicated below Press the Aor W key to change the temperature set point value Press the gt key once to enter the new t
68. rom normal operating noises can be a valuable way to identify problems and prevent further damage Examples of noises to be aware of include e Circulator motor and fan noises with compressors off e Compressor start up and running noises sequential starting of compressors e Condenser fan noises e Relay and valve cycling noises when cool light is cycling How to Inspect the Door Seal The door has two silicone gaskets to minimize thermal losses and moisture migration e Inspect the gaskets for dirt and tears e Repair minor tears with a high quality RTV silicone such as GE RTV167 e Check the integrity of the door seal by closing the door on a sheet of paper With the door closed slowly pull the paper You should feel the resistance getting lighter as the paper goes past the inner gasket Repeat this all around the door at several places e If the seal is not tight adjust the door latch The catch bracket that is mounted to the chamber has slotted holes to permit adjustment e If the seal is still loose on the hinge side adjust the door hinge The hinges have slotted holes to permit adjustment Page 8 2 TestEquity 123C Temperature Chamber Chapter 8 Maintenance How to Inspect the Refrigeration Machinery Compartment WARNING Wear safety goggles when inspecting the machinery compartment to protect against a refrigerant line which could break Unplug the chamber from the power source Remove the side and rear pane
69. s airflow the characteristics of the test sample and how it is oriented in the chamber You cannot calibrate to improve gradients The correct way to adjust what the F4 Controller displays compared to what is measured at some point other than the controller s sensor is with the Calibration Offset parameter See page 6 2 of the Series F4 User s Manual for details Calibration verification should be performed with the Calibration Offset set to 0 0 zero The F4 Controller accuracy is specified 1 55 C above 50 C and 1 66 C below 50 C Total system accuracy in the chamber includes the controller plus the thermocouple wire accuracy of 1 0 C Total system accuracy over the chamber s operating range is can be as much as 2 66 C although it is typically better than 1 0 C The easiest way to verify the instrumentation accuracy is with an independent calibrated temperature sensor and display Place the sensor near the chamber s sensors which are located towards the right side of the conditioner fan grille If the readings agree within the specified limits above then no calibration adjustments are necessary If calibration of the F4 Controller is necessary refer to page 9 2 of the Series F4 User s Manual and follow the instructions for Thermocouple Input Procedure for Input 1 Page 8 6 TestEquity 123C Temperature Chamber Chapter 8 Maintenance Theory of Operation Overview
70. s overloaded Test sample is energized giving off heat Circulator motor is not turning Port plug is not in port Door is not sealing completely Ice on evaporator TestEquity 123C Temperature Chamber Page 8 9 Chapter 8 Maintenance SYMPTOM CONDITION CAUSES Temperature readout on F4 Controller varies more than 0 5 C or 1 C total If tuning PID control parameters in F4 Controller were changed If tuning PID control parameters in F4 Controller are as shipped from TestEquity If tuning PID control parameters in F4 Controller are as shipped from TestEquity and only occurs in cool mode U Re enter values as shipped from TestEquity Control parameters may need to be changed for your unique test conditions Solenoid valve SV1 may be defective Compressors turn on and off too frequently If compressor control parameters in F4 Controller were changed If compressor control parameters in F4 Controller are as shipped from TestEquity Re enter values as shipped from TestEquity Solenoid valve SV1 may be defective in the open position Page 8 10 TestEquity 123C Temperature Chamber Chapter 8 Maintenance Refrigeration System Charging Instructions WARNING Repair of the refrigeration system must be performed only by a properly trained mechanic who is experienced in repairing cascade refrigeration systems Do NOT substitute any component Do
71. st is completed warm the chamber to at least room ambient before opening the chamber door and before removing your test sample You can use the GN gaseous nitrogen or Dry Air Purge System to eliminate moisture condensation at low temperatures Internal Test Fixtures Some applications require internal fixtures to support test samples and provide a convenient method of connecting wires and sensors Fixtures must be designed to minimize their impact on chamber functionality and performance Fixtures should be designed for easy removal to permit maintenance and cleaning of the chamber The chamber liner should never be drilled or screwed into This will compromise the integrity of the liner and permit moisture migration due to condensation into the insulation which will eventually impact performance and lead to premature rusting of the outer cabinet Fixtures should be constructed of stainless steel This also applies to all screws and fasteners All welds should be passivated To prevent rust and corrosion never use iron or mild steel even if it is painted or plated Aluminum may be used However since the specific heat of aluminum is double that of steel it represents a greater load and will have more impact on the chamber performance Make sure that all connectors wiring pc boards and auxiliary components can withstand the temperature extremes that they will be subjected to In some cases these components may not be able to last afte
72. t Switch The Light Switch controls the workspace light The Light Switch illuminates when it is ON Heat Light The Heat Light will illuminate when the F4 Controller turns on the heater to maintain the workspace temperature The Heat Light will cycle on off as the workspace temperature approaches and reaches the temperature set point This light corresponds to the 1A indicator on the F4 Controller Cool Light The Cool Light will illuminate when the F4 Controller turns on the cooling valve to maintain the workspace temperature The Cool Light will cycle on off as the workspace temperature approaches and reaches the temperature set point This light corresponds to the 1B indicator on the F4 Controller Page 3 2 TestEquity 123C Temperature Chamber Chapter 3 Operation Loading the Chamber WARNING Do NOT put items in the chamber that could burn or explode at high temperatures This chamber uses open wire heating elements which generate surface temperatures over 1000 F This is NOT an explosion proof chamber WARNING Do NOT put items in the chamber which can emit corrosive vapors or substances Z WARNING This chamber is NOT a curing oven There are NO provisions for venting fumes A WARNING The chamber door must remain closed while the chamber is operating If you need to open the door while the chamber is operating wear safety goggles to prevent the high velocity airflow from blowing particles or objects into your ey
73. t up to 23 C before turning the Conditioning Switch OFF Page 8 4 TestEquity 123C Temperature Chamber Chapter 8 Maintenance How to Inspect the Electrical Compartment 1 Disconnect the chamber from the power source 2 Remove the top cover 3 Check for loose components loose wires burned insulation near terminals and burned or excessively pitted contacts on contactors How to Clean the Condenser 1 Disconnect the chamber from the power source 2 Remove the lower front panel 3 Clean the condenser and desuperheater fins with a vacuum cleaner NOTE You may need to clean the condenser more frequently if the chamber is in a dusty environment You may be able to clean the condenser less frequently if the chamber is in a very clean environment TestEquity 123C Temperature Chamber Page 8 5 Chapter 8 Maintenance How to Verify the Temperature Calibration TestEquity recommends verifying the temperature calibration before attempting to actually perform a calibration The state of the art instrumentation used in TestEquity chambers is of the highest quality and seldom goes out of calibration If you try to calibrate the instrumentation before determining that calibration is necessary you may make it worse if done incorrectly Variations in temperature throughout the chamber interior is NOT a measurement of accuracy These variations called gradients are a function of the physical design of the chamber and it
74. the Dry Air System is shown in the off position Valve must be in the on position to operate Figure 4 4 Dry Air Purge System Installation TestEquity 123C Temperature Chamber Page 4 7 Chapter 4 F4 Temperature Controller Purge Operation The Purge mode is enabled through Event 3 Digital Output 3 in the F4 Controller NOTE The Modbus register to program Digital Output 3 in static set point mode is 2020 NOTE In the Profile Create and Edit menus Digital Output 3 is named PURGE Remember to set PURGE to On in all programmed steps when the you want to use the purge The Event Outputs are accessed from the DigitalOut prompt on the Main Page in static set point mode and the DIGIT OUT prompt in the Profile programming mode Adjusting the Purge Flow A flowmeter is located on the front panel to adjust the flow of purge gas into the chamber The flowmeter has a scale calibrated in SCFM The flow of purge gas should be adjusted to the minimum amount required to obtain the desired drying in the chamber for your particular conditions A suggested starting setting is 2 SCFM Relief Vent Excess pressure in the chamber workspace is vented through a pressure relief check valve which is located on the top of the chamber Page 4 8 TestEquity 123C Temperature Chamber Chapter 4 F4 Temperature Controller Profile Programming The Series F4 Temperature Controller can be programmed to store up to 256 steps into as many as 10
75. tion Option TE 0017 4 7 Purge Operation 4 8 Adjusting the Purge Flow 4 8 Relief Vent 4 8 Profile Programming 4 9 Step Types 4 9 How to Program a New Profile 4 11 Programming Hints 4 12 Profile Key 4 12 How to Start a Profile 4 12 How to Hold Resume a Running Profile 4 13 How to Terminate a Running Holding Profile 4 13 How to Delete or Re Name a Profile 4 13 How to Edit a Profile 4 14 Profile Example 1 4 15 Profile Example 2 4 16 Operations Page 4 17 Setup Page 4 17 Factory Page 4 18 TT C tCtCtC _CTatbdle of Contents Computer Interface RS 232C Common Modbus Registers GPIB optional Ethernet optional Chapter 5 Limit Controller Introduction Limit Controller Keys and Displays How to Set the High and Low Temperature Safety Limits Resetting an Out of Limit Condition Silencing the Audible Alarm Protecting an Energized Test Sample Chapter 6 Frequently Asked Questions Chapter 7 Specifications Model 123C Chamber Specifications F4 Controller Specifications Chapter 8 Maintenance Preventive Maintenance Intervals Daily or As Needed Every 3 Months Every 6 Months Every 12 Months Maintenance Procedures How to Clean the Chamber Interior and Exterior How to Listen for Abnormal Noise or Vibration How to Inspect the Door Seal How to Inspect the Refrigeration Machinery Compartment How to Verify the P
76. tter in a user nameable field such as events and profile names Figure 4 1 F4 Controller Keys and Displays Enter or change the value or make a choice with the A or W key The key again saves the value and proceeds to the next parameter in the series The lt key saves the value and backs out of the series and returns to the Main Page To edit a parameter proceed through the series using the key without changing values until you find the parameter you want to change After making the change with the with the A or V key you may back using the lt key out or proceed using the key to the end of the series Page 4 2 TestEquity 123C Temperature Chamber Chapter 4 F4 Temperature Controller Main Page The Main Page displays manual operating parameters running program parameters and error messages It also provides access to the Operations Profiles Setup and Factory pages The following is a list of Main Page parameters and the description of their functions Main Page Current File Displayed if running a profile the name of the profile Current Step Displayed if running a profile the current step of the profile gt SP1 Static manual temperature set point entry If running a profile the current set point Step Type Displayed if running a profile the type of step Target SP1 Displayed if running a profile the target temperature during a ramp step WaitFor Status Displayed if running a profile the status du
77. uring the controller hardware TestEquity has configured the security to require a password for access to the Setup Page However there will be times when entry into these menus is necessary For example you may need to gain access to Setup Page in order to change from C to F display or to change the time or date You must call TestEquity at 877 512 3457 or 805 480 0638 to obtain the password CAUTION The Series F4 Controller setup values have been properly configured by TestEquity to match the chamber s system requirements and to perform optimally over a wide range of operating conditions Improper modifications to these values can result in erratic performance and unreliable operation Do not attempt to modify the setup values unless you thoroughly understand what you are doing Setup examples in the Series F4 User s Manual are NOT applicable to this chamber If there is any doubt please call TestEquity before proceeding The correct values are documented in the Series F4 Controller Setup Parameters section of this manual TestEquity 123C Temperature Chamber Page 4 17 Chapter 4 F4 Temperature Controller Factory Page The Factory Page provides access to menus for controller diagnostics and calibration TestEquity has configured the security to require a password for access to the Setup Page However there will be times when entry into these menus is necessary For example you may need to gain access to Factory

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