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TestEquity 115 Temperature Chamber Operation and Service Manual

1. Choose End State Control Off All Off gt Idle gt 7 Save your settings e 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 Page 4 6 TestEquity 115 Temperature Chamber Chapter 4 Temperature Controller Programming Hints e The first step in a program should be an initialization step of 1 second usually at a set point of 23 C 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 TestEquity does NOT recommend using 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 and interior light or even higher if your test sample is energized 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 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
2. Custom Main Page Menu Main Page Go to Setup Custom Main Page Pl Current File P2 Current Step P3 Set Point 1 P4 Step Type PS Target SP1 P6 WaitFor Status P7 Jump Count P8 Time Remaining P9 Digital Outputs P10 Power 1 P11 Date P12 Time P13 Custom Message 1 P14 None P15 None P16 None Static Page Menu Main Page Go to Setup Static Message Message 1 TESTEQUITY 115 Series F4 Operations Parameters PID Set Channel 1 Menu Main Page Go to Operations Edit PID PID Set Channel 1 PID Set 1 5 Proportional BandA 5 0 C 9 0 if F Reset A Rate A Dead Band A 0 20 min 0 00 min 0 0 C Alarml Low SP Alarm High SP Alarm2 Low SP Alarm2 High SP Alarm Setpoints Menu Main Page Go to Operations Alarm Setpoints Alarm1 74 0 C 101 0 if F 175 0 C 347 0 if F Main Page Go to Operations Alarm Setpoints Alarm2 74 0 C 101 0 if F 175 0 C 347 0 if F NOTE The alarm outputs of the Temperature Controller are NOT connected to the chamber s safety system TestEquity does NOT recommend using the Temperature Controller s alarm function as the main protection device Page 8 12 TestEquity 115 Temperature Chamber Chapter 8 Maintenance Series F4 Set Lockout Parameters 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
3. 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 Set Point Full Access Oper Autotune PID Password Oper Edit PID Password Oper Alarm SP Password Profile Full Access Setup Password Factory Password TestEquity 115 Temperature Chamber Page 8 13 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 Setup Menu Prompt Function Setting Alternate Setting i of Lockout Menu 2 See NOTE 1 below
4. Maintenance Theory of Operation Overview The chamber is heated by an open element nichrome heater Cooling is accomplished by a cascade refrigeration system which consists of two compressors The air is circulated by a propeller fan The heater evaporator cooling coil and fan are located within an air plenum which is on the top of the chamber interior Refer to the electrical and refrigeration drawings to identify the referenced items described below Heating System The chamber is heated by an open element nichrome heater HT1 The heater is located in the air plenum The temperature controller TCR1 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 The heat pilot light PL1 provides an indication on the front panel when the heater is on A fusible heat limiter HL provides failsafe protection against a catastrophic failure by opening the heater circuit at 240 C The master heat contactor C1 provides a power interlock for the heaters circulator fan motor and the control system C1 is controlled by both the power switch SW1 temp switch SW2 and temperature limit controller TCR2 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 evapora
5. SEn Sensor Type EC Do Not Change L n Linearization Ej Do Not Change dEC Decimal 0 Alt 0 0 C_F Cor 0O Alte sd r Lo Range Low 76 Do not make any lower r h 1 Range High 188 Do not make any higher Fag Output 2 Function L P 9 Do Not Change 1 5d Limit Sides both Alt high High only or LoW Low only L h Y Limit Hysteresis 2 Change not recommended REY Alarm Type oFF Do Not Change PAr_ Upper Display ACPU Alt none PAre Lower Display LSE Alt Lh s High Set Point or LL S Low Set Point Ad 5 Zone Address Not functional for this application NOTE 1 The Lockout Menu sets the security clearance level as follows i Operations Menu read only e Operations Menu set point read write 3 Operations Menu set point read or write same as level 2 4 Operations Menu full access read write required to access Calibration Offset below S 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 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 Calibration Offset parameter Page 8 14 TestEquity 115 Temperature Chamber Chapter 9 Warrant Chapter 9 Warranty TestEquit
6. Step Step Date Choose Digit Out Time Chi PID Guar Jump to End Number Type Day Time Wait for 1 2 3 4 5 6 7 H M S Rate SP Set Soak Profile Step Repeats Type 1 Ramp Time gt gt gt gt gt gt gt gt 00 00 01 23 0 1 No 2 Ramp Time gt gt gt gt gt gt gt gt 00 00 01 40 0 1 No 3 Soak gt gt gt gt gt gt gt gt 00 30 00 1 Yes 4 Ramp Time gt gt gt gt gt gt gt gt 00 00 01 85 0 1 No 5 Soak gt gt gt gt gt gt gt gt 00 30 00 1 Yes 6 Jump gt gt gt gt gt gt gt gt Name 2 3 7 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 TestEquity 115 Temperature Chamber Sau June Profile Summary 50 C to 0 C 1 C minute ramp 1 hour soak time 100 cycles Test sample turned ON OFF depending on step End with return to 23 C manual set point Step Step Date Choose
7. 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 during 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 Poweri The of throttle of the heat output Date Real time clock date Time Real time clock time TESTEQUITY 115 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 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 1 Press the Aor Y key to position the Cursor next to the SP1 prompt You may already be at this
8. F4 Temperature Controller 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 Temperature 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 Temperature 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 configuring 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 f
9. Go to Profiles then press the key Main Page gt Go to Profiles Go to Setup Go to Factory lt gt 2 Choose Delete or Re Name e Press Aor Y to scroll through your choice e Press to select your choice e 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 mu Page 4 8 TestEquity 115 Temperature Chamber Chapter 4 Temperature Controller How to Edit a Profile 1 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 key Go to Setup Go to Factory 2 Choose Edit Profile Main gt Profile _ e Press the Y key to choose on Edit Profile e Then press the key Create Profile Edit Profile Delete Profile 3 Select the desired stored profile to edit Edit Profile __ e Press the Aor Y to scroll through the list of Profilet stored profiles gt Profile2 e Press to select the desired profile Profile3 4 Choose how to edit the step Choose to e Press the Aor Y to scroll through the list of step Insert Step edit choices gt Edit Step e Press to select your choice Delete Step Done 5 To edit a step Edit Step e Press the Aor Y to scroll through the list of steps gt Step 1 Ramp Time you want to edit Step 2 Soak e Press to scroll through the step parameters and St
10. Major Refrigeration Parts Description Mfr Mfr Part No Ref Part Qty UOM Accumulator CUSTOM 100345 4 100345 1 ea Cap Tube 0 042 x 10 ft Bleed J B or equiv TC 42 or equiv 12 100340 10 1 ea Cap Tube 0 042 x 5 ft LS J B or equiv TC 42 or equiv 13 100340 5 1 ea Cap Tube 0 050 x 10 ft HS J B or equiv TC 50 or equiv 11 100019 4 ea Cascade Condenser CUSTOM 100339 16 100339 1 ea Compressor LS Copeland AFE13C3E IAA 201 1 100347 1 ea Condensing Unit HS Copeland M4FL 0033 IAA 017 2 100308 1 ea Desuperheater Coil CUSTOM 100325 3 100325 1 ea Evaporator Coil CUSTOM 100375 17 100375 1 ea Expansion Tank CUSTOM 100346 5 100346 1 ea Expansion Valve Danfoss 068U2027 15 100314 1 ea Filter Drier Danfoss 023Z5048 14A B 100524 2 ea Oil Separator Temprite 900 18 100536 1 ea Pressure Control HS HPCO Johnson Controls P20DB 1D 8 PS2 100341 1 ea Pressure Control LS HP Limit Johnson Controls P20EA 1D 7 PS1 100342 1 ea Solenoid Valve Sporlan XWG 6 100343 1 ea Solenoid Valve Coil Sporlan OMKC 1 120 50 60 SV1 100344 1 ea General Parts Description Mfr Mfr Part No Ref Part Qty UOM Caster Fixed for 115F Trio Pines 2521 02P 300610 2 ea Caster Swivel for 115F Trio Pines 2520 02P SB 300609 2 ea Door Gasket Inner CUSTOM 300580 300580 1 ea Door Gasket Outer CUSTOM 300581 300581 1 ea Door Latch Chamber Workspace Southco A7 10 301 20 300216 1 ea Fan Alum 4 D 250 Bore Airdrive 10BL4 0CW44 300282 1 ea Port Plug S
11. 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 to enter the name space and the first position e Press the Aor Y to scroll through the alphabet and stop at the letter or number desired e Press 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 to save the name of the profile Choose to Name No gt Yes Enter Profile Name _ PROFILE1 A Y Adjusts Char lt gt Save Changes 4 Choose the step type e 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 E Soak v 5 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 Not all choices are shown in this example Choose to wait gt Step does not wait Step waits for Choose DIGIT OUT1 gt Off On Enter Ramp Time 00 00 01 H M S A Y Adjusts Digit lt gt Save Changes Enter Chi SP _ 85 0 C A v Adjusts Value lt Back gt Next 6 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
12. actually 100 5 and 230 is 23 0 GPIB optional The optional GPIB interface model TE 1052 consists of an external converter box that connects to the chamber s RS 232C interface GPIB programming resources and LabVIEW drivers can be downloaded from http www testequity com static 10 Ethernet optional The optional Ethernet interface model TE 1055 consists of an external converter box that connects to the chamber s RS 232C interface TestEquity 115 Temperature Chamber Page 4 13 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 Zone User s Manual CAUTION The EZ Zone User s Manual is a general manual and is written by the manufacturer Watlow for a
13. expendable and be replaced when they no longer provide a good seal Page 3 2 TestEquity 115 Temperature Chamber Chapter 3 Operation Performance Considerations The performance of all chambers is significantly effected by the characteristics of your test sample Factors include size weight material shape and power dissipation 1f 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 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 You may find that the temperature throughout the chamber is even but always different from what the temperature controller indicates The correct way to adjust what the temperature 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 Avoiding Moisture Any time the ambient ai
14. 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 on 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 1tis 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 inserte
15. produce a moderate amount of heat during normal operation Locate the chamber in an area with adequate ventilation to prevent excessive heat build up The chamber must be on a solid and level surface that is rated to hold at least 350 pounds ZA 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 ZA 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 Reversible Chamber Door The chamber door can be mounted to open from the left or right side The chamber cabinet has mounting holes on both sides for the hinges and door latch If you reverse the door see How to inspect the door seal in the Maintenance chapter of this manual to make sure the hinges and door latch are adjusted correctly Page 2 2 TestEquity 115 Temperature Chamber Chapter 3 Operation Chapter 3 Operation Introduction The Front Panel Switches control power to the temperature controller and all chamber functions The Limit Controller is a protection device It turns the chamber OFF and sounds an alarm if the workspace temperature exceeds either a high temperature or low temperature limit set point The Temperature Controller controls the temperature of the chamber The Temperature Controller automatically turns t
16. 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 e Wait for an event or process value Event outputs 1 through 7 to turn ON or OFF For controlling the power to remote devices 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 Guaranteed Soak Page 4 4 TestEquity 115 Temperature Chamber Chapter 4 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 a
17. 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 Temperature 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 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 th
18. 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 Improper modifications to configuration settings can result in erratic performance and unreliable operation Setup examples in the Series F4 User s Manual are NOT applicable to this chamber The correct values are documented in the Series F4 Temperature Controller Setup Parameters section of this manual 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 and LabVIEW drivers can be downloaded from http www testequity com static 11 Common Modbus Registers e The actual chamber temperature reading is Modbus register 100 Input 1 Value e The static temperature set point is Modbus register 300 Set Point 1 e The temperature set point during a profile is Modbus register 4122 Set Point 1 Current Profile Status e The decimal points are implied For example 1005 is
19. want to purchase in advance Electrical Parts Contactors Relays Heat Limiter Circulator Motor and Fan Switches Refrigeration Parts Solenoid Valve Compressors TestEquity 115 Temperature Chamber Page 8 9 Chapter 8 Maintenance Major Electrical Parts Description Mfr Mfr Part No Ref Part Qty UOM Arc Suppressor ITW Paktron 104M06QC100 AS1 200115 1 ea Audible Alarm Floyd Bell MC 09 201 Q AL1 200005 1 ea Circulator Motor Kit CUSTOM 100573 FM1 100573 1 ea Contactor 1P 30A Hartland Controls HCC 1XTO2AA C2 3 200237 2 ea Heat Limiter Thermodisc G5A 01 240C HL 200070 1 ea Heater Air CUSTOM 200199 HT1 200199 1 ea High Low Limit Controller Watlow PM6L1AJ AAAABAB TCR2 200301 1 ea Indicator Panel 125V Neon SoLiCo S412 2 1 N1 PL2 200025 1 ea Lamp Philips T22 125 130V 15W E14 Base LT1 200203 1 ea Line Cord 12 3 NEMA 5 20P Intl Config 80560 N A 200205 1 ea Relay Octal DPDT 10A 120VAC Idec RR2P UCAC120 CRI 200292 3 ea Solid State Relay 10A 24VDC In Omron G3NE 210T US DC24 SSRI 200177 1 ea Solid State Relay 5A Omron G3NA 205B DC5 24 SSR2 200032 1 ea Switch SPST Rocker Carlingswitch LRA211 RA B 125N SW1 2 3 200023 3 ea Temperature Controller Watlow F4SH CKAO 01AE TCR1 200001 1 ea Timing Module Airotronics THC1030SC TMI 200243 1 ea
20. 5 C 65 C 300W 255W 160 W 110 W 80 W Cool Down Transition Time Start Temp to gt 23 C 85 C End Temp 23 C 0 C 40 C 55 C 65 C 73 C 5 min 20 min 30 min 40 min ultimate 16 min 25 min 45 min 57 min 69 min ultimate Heat Up Transition Time 5 C per minute typical Note Transition times are measured after a 1 hour soak at the start temperature with an empty chamber at the control sensor Refrigeration and Heating System High Stage Refrigerant Low Stage Refrigerant Compressors Condenser Heater Power Input Power Workspace Dimensions Outside Dimensions Min Installed Clearance Access Ports Weight Sound Level R 404A Dupont HP 62 R 508B Dupont SUVA 95 1 2 HP x 1 3 HP Copeland hermetic compressors in a cascade configuration Air Cooled 600 Watts 120 V nominal 110 to 126 VAC 60 Hz 1 PH Max Current Draw 15 A Recommended Minimum Service 20 A 16 W x 12 H x 14 D 1 55 cubic feet Bench Version 24 W x 44 H x 26 D nominal Floor Version 24 W x 61 H x 26 D nominal 6 from the left and right side 12 from the rear 2 Port on left and right side two total Supplied with foam plugs 115B Bench Version 275 pounds 115F Floor Version 300 pounds 52 dBA in cooling mode A weighted measured 36 from the front surface 63 from the floor in a free standing environment NOTE Performance is typical and based on operation at 23 C 73 F ambient and nominal input volt
21. Digit Out Time Chi PID Guar Jump to End Idle Number Type Day Time Wait for 1 2 3 4 5 6 7 H M S Rate SP Set Soak Profile Step Repeats Type SP 1 Ramp Time gt On gt gt gt gt gt gt 00 00 01 23 0 1 No 2 Ramp Rate gt On gt gt gt gt gt gt 1 0 50 0 1 No 3 Soak gt On gt gt gt gt gt gt 01 00 00 1 No 4 Ramp Rate gt Off gt gt gt gt gt gt 1 0 0 0 1 No 5 Soak gt Of gt gt gt gt gt gt 01 00 00 1 No 6 Jump gt gt gt gt gt gt gt gt Name 2 99 7 Ramp Rate gt Of gt gt gt gt gt gt 1 0 23 0 1 No 8 End Idle 23 0 Step Description Establishes a recommended initialization step Goes to 23 C as quickly as possible Test sample is turned ON via Event 1 Goes to 50 C at a controlled rate of 1 C per minute Test sample is turned ON via Event 1 Will hold for 1 hour Test sample remains ON via Event 1 Goes to 0 C at a controlled rate of 1 C per minute Test sample is turned OFF via Event 1 Will hold for 1 hour Test sample remains OFF via Event 1 Jumps back to step 2 Repeats this 3 times for a total of 4 cycles After all cycles are completed establishes the condition to end on Goes to 23 C at a controlled rate of 1 C per minute Test sample is turned OFF via Event 1 End of program Controller returns to a 23 C manual set point Test sample is remains OFF via Event 1 NA Aun Notes y G
22. Do NOT put items in the chamber that could burn or explode at high temperatures This chamber uses open wire heating elements that generate surface temperatures over 1000 F This is NOT an explosion proof chamber Do NOT put items in the chamber that can emit corrosive vapors or substances This chamber is NOT a curing oven There are NO provisions for venting fumes 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 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 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 To prevent damage to your test sample and the chamber s compressor do not exceed the live load rating of the chamber Live Load Capacity for Model 115 Temp 23 C 0 C 40 C 55 C 65 C Watts 300W 255W 160W 110W 80W 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
23. 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 TEMP 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 115 Temperature Chamber 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 We do make a special export version for this purpose model 115 EX It has 230 V 50 Hz compressors and an internal step down transformer for the heater and control circuitry Why does my chamber heat
24. TESTEQUITY Model 115 Temperature Chamber With F4 Controller and EZ Zone Limit Controller 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 O 2006 2010 TestEquity LLC 110110 Rev 1 14 Table of Contents Chapter 1 Safety Instructions 1 1 Introduction 1 1 Installation Safety Notices 1 1 Operation Safety Notices 1 1 Chapter 2 Installation 2 1 Uncrating 2 1 Preparation For Use 2 1 Installation Location 2 2 Reversible Chamber Door 2 2 Chapter 3 Operation 3 1 Introduction 3 1 Front Panel Switches and Lights 3 1 POWER Switch 3 1 TEMP Switch 3 1 LIGHT Switch 3 1 HEAT Light 3 1 Summary of Chamber Operation 3 1 Loading the Chamber 3 2 Port Plugs 3 2 Performance Considerations 3 3 Avoiding Moisture 3 3 Internal Test Fixtures 3 3 Chapter 4 Temperature Controller 4 1 Introduction 4 1 Security Features 4 1 Temperature Controller Keys and Displays 4 2 Main Page 4 3 Static Set Point Control 4 3 Profile Programming 4 4 Step Types 4 4 How to Program a New Profile 4 6 Programming Hints 4 7 Profile Key 4 7 How to Start a Profile 4 7 How to Hold Resume a Running Profile 4 8 How to Terminate a Running Holding Profile 4 8 How to Delete or Re Name a Profile 4 8 How to Edi
25. age This product is designed for use in a normal conditioned laboratory Operation at higher ambient temperatures will 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 115 Temperature Chamber Page 7 1 Chapter 7 Specifications F4 Temperature Controller Specifications Specifications as configured for the TestEquity 115 Chamber Accuracy amp Sensor Conformity 1 55 C above 50 C 1 66 C below 50 C Stability 0 1 C C rise in ambient Digital Inputs Four Contact closure or dc voltage 10 KQ impedance Retransmit Outputs Optional Two User selectable ranges 0 to 10 VDC 0 to 5 VDC 1 to 5 VDC 0 to 20 mA 4 to 20 mA Alarm Outputs Two Electromechanical relay Form C 2 A 20 VDC or 240 VAC max Digital Outputs 7 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 Communications EIA 232 and EIA 485 serial communications with Modbus RTU protocol Safety amp Agency Approvals UL c UL 916 listed File E185611 CE to EN61010 NEMA 4X and IP65 CE EMC to EN50082 2 CE EMC to EN55011 Displays Process 5 seven segment red LED Interface Display 4 line high definition green LCD selectable C or F Data Retention Retention upon power failure via nonvolatile memory seven years fo
26. amp 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 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 TestEquity 115 Temperature Chamber Page 4 5 Chapter 4 Temperature Controller How to Program a New Profile 1 Go to the Profiles Page Move the cursor down the Main Page to Go to Profiles then press the key Main Page gt Go to Profiles Go to Setup Go to Factory gt 2 Create a new Profile The cursor will be on Create Profile Press the gt key Main gt Profile__ Create Profile Edit Profile Delete Profile lt 3 Name the profile
27. at 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 after repeated tests and should be considered expendable TestEquity 115 Temperature Chamber Page 3 3 Chapter 4 Temperature Controller Chapter 4 Temperature Controller Introduction The Series F4 Temperature 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 Digital outputs profiles and alarms can be named for easy reference An Information Key gives you quick information about the pages menus parameters and values as well as error and alarm conditions 1f 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 Temperature Controller has been properly configured by TestEquity to match the chamber s s
28. at the Limit Controller s high and low limits are set to temperatures that are appropriate 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 To prevent damage to your test sample and the chamber s compressors do not exceed the live load rating of the chamber 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 Do NOT put items in the chamber which can emit corrosive vapors or substances This chamber is NOT a curing oven There are NO provisions for venting fumes TestEquity 115 Temperature Chamber Chapter 1 Safety 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 TestEquity 115 Temperature Chamber Page 1 3 Chapter 2 Installation Chapter 2 Installa
29. d 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 heating and refrigeration systems and void the warranty You need a gravity convection oven for that kind of test TestEquity 115 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 Temperature 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 sam
30. e defective in the closed position One of the HT1 heater windings is open TestEquity 115 Temperature Chamber Page 8 7 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 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 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 Use a charging scale to weigh in 7 ounces of R 404A E Verify the cooling performance as outlined in How to verify the chamber performance R 508B Low Stage Charge Repair any leaks before recharging Attach a vacuum pump and manifold gauge to the suction and discharge ports Evacuate the system to at least 100 microns Do NOT guess You must use a micron gauge Do NOT put any additives in the system Pentane or propane is NOT necessary or desirable AD DS Charge the system until the standby pressure is 120 PSIG at an ambient temperature
31. een ordered with the Event Board option The event board contains 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 3 0 Amps However TestEquity recommends derating the maximum current to 2 5 Amps The solid state relay mounting board is UL recognized CSA certified for 120 VAC max with the board mounted fuses 250 VAC max with a 22 solid copper jumper wire instead of the fuses Connecting to the Event Board 1 Unplug the chamber from the power source 2 Remove the top cover 3 The Event Board is located towards the front left corner Connect to the board as follows Event Output Event Board Terminals Event 1 1 2 Event 2 3 4 Event 3 5 6 Event 4 7 8 Event 5 9 10 Event 6 11 12 Event 7 13 14 4 The event outputs are just switches You must provide power from an external source 5 A 1 2 inch conduit hole is provided on the left side of the upper compartment to route your wires through Use the appropriate wire cable management fittings TestEquity 115 Temperature Chamber Page 4 11 Chapter 4 Temperature Controller Operations Page 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
32. ep 3 Ramp Time make any desired changes 6 To insert a step e Choose Edit Profile see step 4 above e Press the Aor Y to scroll through the number of the step that the new step will precede e Press to enter the new step and follow the step parameter prompts Insert Before Step 1 Ramp Time gt Step 2 Soak Step 3 Ramp Time 7 To delete a step e Choose Delete Step see step 4 above e Press the Aor Y to scroll through the number of the step you want to delete e Press to delete the step Delete Step _ Step 1 Ramp Time gt Step 2 Soak Step 3 Ramp Time 8 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 Y to restore the old values Save profile data or restore values Y Restore A Save An End Step cannot be deleted TestEquity 115 Temperature Chamber 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 Deleting a ramp step usually requires deleting the associated soak step Page 4 9 Chapter 4 Temperature Controller The following are examples of two typical profiles Profile Examples Profile Summary 40 C to 85 C no ramps 30 minute soak time 4 cycles End with return to 23 C manual set point
33. er 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 periodically 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 115 Temperature Chamber Page 6 3 Chapter 7 Specifications Chapter 7 Specifications Model 115 Chamber Specifications Temperature Range Control Tolerance Uniformity Live Load Capacity O 73 C to 175 C 0 2 C Measured at the control sensor after stabilization 0 5 C Variations throughout the chamber after stabilization 23 C 0 C 40 C 5
34. erature controller is necessary refer to page 9 2 of the Series F4 User s Manual and follow the instructions for Thermocouple Input Procedure TestEquity 115 Temperature Chamber Page 8 3 Chapter 8 Maintenance How to verify the chamber performance These tests verify the performance of the heating refrigeration electrical controls temperature controller and air circulation systems The chamber should meet all published performance specifications if all of these tests are successfully passed If the chamber fails any of these tests 1t should be removed from service to prevent further damage until the cause of the problem is determined and resolved These tests assume that the Temperature Controller s setup and tuning values have not been changed from the values as shipped from TestEquity Also the Limit Controller high limit must be set to over 85 C 88 C would be fine and the low limit set to 74 C The ambient temperature must be approximately 23 C for the cool down times to be valid 1 The chamber interior should be empty and at ambient temperature approximately 23 C 2 Turn ONLY the MASTER Switch ON Set the Temperature Controller Set Point to 85 C Then turn the TEMP Switch ON 3 The Heat Light should be ON continuously 4 The chamber should heat up to about 80 C and begin controlling HEAT Light cycles ON OFF within approximately 12 minutes 5 The chamber temperature should slowly
35. eriod 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 and 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 contractually 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 imprope
36. 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 from 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 Valve cycling noises How to inspect the door seal The chamber 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 RTV 167 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 Repeat this all around the door at several places e If the seal is not tight on the latch side adjust the latch bracket The latch bracket is mounted to the chamber and has slotted holes to permit adjustment e If the seal is not tight on the hinge side adjust the door hinge The hinges have a slotted hole on the door side to permit adjus
37. he refrigeration system on or off as required based on the deviation from temperature set point Front Panel Switches and Lights POWER Switch The POWER Switch controls power to the entire chamber The POWER Switch illuminates when it is ON TEMP Switch The TEMP Switch enables all chamber functions When the TEMP Switch is OFF and the Power Switch is ON only the Temperature Controller and Limit Controller are operational When both the TEMP and POWER Switches are ON the chamber s temperature conditioning system will function to maintain the temperature set point The TEMP Switch illuminates when it is ON LIGHT 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 Temperature 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 Summary of Chamber Operation 1 Turn the POWER Switch ON 2 Enter the desired temperature safety limits on the Limit Controller 3 Enter the desired temperature set point on the Temperature Controller 4 Load your test sample in the chamber 5 Turn the TEMP Switch ON TestEquity 115 Temperature Chamber Page 3 1 Chapter 3 Operation Loading the Chamber IN WARNING IN WARNING IN WARNING IN WARNING IN WARNING Al CAUTION IN CAUTION Port Plugs
38. ilicone Foam 3 CUSTOM 300373 300373 2 ea Shelf CUSTOM TE 1151 TE 1151 1 ea Viewing Window CUSTOM 300575 300575 1 ea Page 8 10 TestEquity 115 Temperature Chamber Chapter 8 Maintenance Series F4 Temperature Controller Setup Parameters Al CAUTION Al CAUTION Al CAUTION Al 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 F4SH CKAO 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 Temperature 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 The alarm outputs of the Temperature Controller are NOT connected t
39. increase and stabilize to 85 C It should NOT overshoot beyond 85 5 C and the compressors should NOT need to turn ON in order to maintain 85 C 6 After stabilization the chamber temperature should vary no more than 0 2 C or a total of 0 4 C 7 Let the chamber remain at 85 C for 30 minutes 8 After 30 minutes at 85 C set the Temperature Controller Set Point to 65 C 9 The high stage compressor should turn ON within a few seconds Then the low stage compressor should turn ON within approximately 30 seconds and the HEAT Light should be OFF 10 The chamber should cool down to 65 C and begin controlling HEAT Light cycles ON OFF within approximately 100 minutes 11 The chamber temperature should NOT undershoot beyond 65 5 C and the compressors should NOT need to turn OFF in order to maintain 65 C 12 After stabilization the chamber temperature should vary no more than 0 2 C or a total of 0 4 C 13 Set the Temperature Controller Set Point to 73 C 14 The chamber should reach 73 C and control HEAT Light cycles ON OFF within approximately 5 minutes 15 Set the Temperature Controller Set Point to 23 C The chamber should begin to heat up The compressors should turn off within approximately 1 minute 16 This concludes the chamber performance verification tests 17 Let the chamber heat up to 23 C before turning the chamber OFF Page 8 4 TestEquity 115 Temperature Chamber Chapter 8
40. mber 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 still 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 115 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 chamb
41. n event or process value e Event outputs 1 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 or 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 R
42. n the system is off within safe limits During a high temperature pull down it is possible for excessive hot gas to return to the compressor The suction line cooling thermostatic expansion valve senses the suction line temperature and injects liquid refrigerant to cool the hot gas within safe limits The high stage has a high pressure switch PS2 which turns off both compressors if the high stage discharge pressure exceeds safe limits approximately 350 psig The temperature 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 6 TestEquity 115 Temperature Chamber Chapter 8 Maintenance Troubleshooting SYMPTOM CONDITION CAUSES Does not heat up at all If controller light 1A is ON circulator fan is ON the Heat light is OFF If controller light 1A is ON circulator fan is ON the Heat light is ON Solid State Relay SSR1 is defective open Heat Limiter HL is open Heats up too slow Does not meet published specifications with empty chamber One of the HT1 heater windings is open Circulator motor is not turning Temperature controller 1s mis configured Heat is on all the time If
43. o the chamber s safety system TestEquity does NOT recommend using the Temperature Controller s alarm function as the main protection device 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 System and Operation Parameters as documented in the TestEquity manual NOT the Series F4 User s Manual TestEquity has configured the Temperature Controller with the parameters as documented on the following pages TestEquity 115 Temperature Chamber Page 8 11 Chapter 8 Maintenance Series F4 Setup Parameters System Menu Main Page Go to Setup System GSB 1 Source Guar Soak Band 1 Current Time Current Date PID Units F or C Show F or C Ch1 Autotune SP Input 1 Fail Open Loop Chl Power Out Time Power Out Action Input 1 3 0 C 5 4 if F local time local date US Reset Rate C Yes Upper Display 90 0 Off 10 Sec Continue Analog Input Menu Main Page Go to Setup Analog Input1 Sensor Type Decimal SP Low Limit SP High Limit Calibration Offset Filter Time Error Latch Thermocouple T 0 0 74 0 C 101 0 if F 175 0 C 347 0 if F 0 0 1 0 sec Self Clear Digital Input Menus Main Page Go to Setup Digital Input 1 4 Name Function No Off Control Output Menus Main Page Go to Setup Control O
44. of 73 F 23 C Allow time for the charge to equalize as read on the suction and discharge gauges This is 15 PSIG higher than the target amount of 105 PSIG This corresponds to approximately 6 ounces 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 105 PSIG at an ambient temperature of 73 F 23 C 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 Or if the pressure is too high you will need to bleed out some refrigerant to achieve a standby pressure of 105 psig Page 8 8 TestEquity 115 Temperature Chamber 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 custom The following is a list of the kinds of parts that you may
45. ontroller Setup Parameters Series F4 Setup Parameters 8 11 8 12 Series F4 Operations Parameters 8 12 Series F4 Set Lockout Parameters 8 13 EZ Zone Limit Controller Setup Parameters Setup Menu 8 14 8 14 Operations Menu 8 14 9 1 Chapter 9 Warranty Chapter 10 Drawings 10 1 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 1f 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 polarized 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
46. or will be off Hold Profile _ Don t Hold gt Hold Terminate Main Page gt Profile 2 Holding Step 2 SP1 23 0 C Y 2 To Resume profile on hold press the Profile key to enter the Resume Profile menu e Then press Aor Y to make your choice for Resume e Press 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 1 Press the Profile key while the profile is running to enter the Resume Control menu e Then press Aor Y to make your choice for Terminate e Press 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 1 Go to the Profiles Page Move the cursor down the Main Page to
47. ple 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 from the chamber interior walls These specifications are for an empty chamber The addition of a test sample may effect 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 temperature 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 cha
48. press toggles Move left to exit value or change a letter ina the display back to user nameable field such as the parameter events and profile names Figure 4 1 Temperature Controller Keys and Displays To navigate through the menus 1 Use the A or Y key to move the cursor to line up with the item to be selected in a menu on the lower display Press the key to select the item Enter or change the value or make a choice with the A or Y key Press the key to enter the value or choice OS Repeat until you return to the original list 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 Y key you may back using the key out or proceed using the key to the end of the series Page 4 2 TestEquity 115 Temperature Chamber Chapter 4 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
49. prompt 2 Press the key once You will see Static Set Point1 in the lower display with the current set point indicated below 3 Press the Aor Y key to change the temperature set point value Press the key once to enter the new temperature 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 Power1 50 v Adjusts Value lt Back gt Next TestEquity 115 Temperature Chamber Page 4 3 Chapter 4 Temperature Controller Profile Programming The Series F4 Temperature Controller can be programmed to store up to 236 steps into as many as 10 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
50. questions that follow 1 Press the Profile key to enter the Profile Control Start a Profile menu e The Profile Indicator will begin blinking vV No A Yes e Press the A key for Yes 2 Select the desired stored profile Start Profile e Press the Aor Y to scroll through the list of Profilet stored profiles gt Profile2 A e Press to select the desired profile Profiles v 3 Select the desired step to start on Start e Press the Aor Y 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 A also start on any other step Step 3 Ramp Time v e Press 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 Y key to scroll through the list of running profile parameters You cannot manually change any operating condition while the profile is running TestEquity 115 Temperature Chamber Page 4 7 Chapter 4 Temperature Controller How to Hold Resume a Running Profile 1 To Hold a running profile press the Profile key to enter the Profile Control menu e Then press Aor Y 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 Indicat
51. r 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 115 Temperature Chamber Chapter 8 Maintenance Chapter 8 Maintenance 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 6 Months e Inspect the door seal e Clean the condenser e Inspect the electrical and refrigeration machinery compartments e Verify the chamber performance Every 12 Months e Verify the calibration TestEquity 115 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
52. r 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 test is completed warm the chamber to at least room ambient before opening the chamber door and before removing your test sample 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 1s painted or plated Aluminum may be used However since the specific heat of aluminum is double th
53. r plenum where heat is absorbed to provide a cooling effect within the chamber The refrigerant vapor travels through the suction line to the compressor 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 The finned coil TestEquity 115 Temperature Chamber Page 8 5 Chapter 8 Maintenance desuperheater to removes some of the heat of compression Next the vapor goes through the oil separator which returns any entrained oil back to the compressor s crankcase The vapor flows through the condenser circuit of the cascade condenser where it is condensed back into a liquid The temperature controller cycles solenoid valve SV1 and half of air heater HT1 to control the chamber temperature When SV1 is ON refrigerant vapor is diverted into the expansion tank to reduce the cooling capacity This refrigerant is slowly returned from the expansion tank to the suction line through a capillary tube The low stage discharge pressure 1s kept within safe limits with the discharge pressure switch PS1 If the discharge pressure exceeds 280 PSIG the PS1 will energize solenoid valve SV1 to dump refrigerant into the expansion tank The expansion tank also provides sufficient volume in the system to keep the standby pressure also known as static or balance pressure whe
54. r 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 115 Temperature Chamber Page 9 1 Chapter 10 Drawings
55. ration is necessary you may make it worse 1f done incorrectly Variations in temperature throughout the chamber interior are NOT a measurement of accuracy These variations called gradients are a function of the physical design of the chamber and its 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 temperature 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 Temperature 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 temp
56. rom 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 A CAUTION The Series F4 Temperature 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 Temperature Controller Setup Parameters section of this manual Page 4 12 TestEquity 115 Temperature Chamber Chapter 4 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 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
57. sword TestEquity 115 Temperature Chamber Page 4 1 Chapter 4 Temperature Controller Temperature Controller Keys and Displays Upper Display Displays actual chamber temperature during operation Displays error information if errors occur Output Indicator Lights 1A Heat L Displa ower Display 1B Not Applicable Displays information about the setup operation and programming of the Alarm Output Indicator Lights controller Lit during an alarm Cursor state Indicates selected Main Page____ parameter or present gt SP1 85 an value in memory Digital Out_ a no Moves via the four Power1 400 ndicator Light navigation keys Lit pulsates when the controller sends Profile or receives valid Indicator Light data Lit when a rampin ice Scroll Bar profile runs When blinking the profile is on hold When not lit the controller operates as a static set point Appears when the Up or Down Keys can reveal more information in the Lower Display controller Profile Key Information Key Left and Right Keys Up and Down Keys Enters the profile menu to Provides information Move right to select the Move the cursor position in the in the Lower Display choice to the right of the Lower Display through the menus in the direction of the key arrow Increase or decrease a start hold resume or terminate a profile about the cursor cursor and proceed selected parameter to the next screen Another
58. t a Profile 4 9 Profile Examples 4 10 Digital Event Outputs 4 11 Digital Output Connections 4 11 Event Board Option 4 11 Operations Page 4 12 Setup Page 4 12 Factory Page 4 13 Computer Interface 4 13 RS 232C 4 13 Common Modbus Registers 4 13 GPIB optional 4 13 Ethernet optional 4 13 Table of Contents 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 Chapter 6 Frequently Asked Questions Chapter 7 Specifications Model 115 Chamber Specifications F4 Temperature Controller Specifications Chapter 8 Maintenance Preventive Maintenance Intervals 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 clean the condenser How to inspect the electrical amp refrigeration machinery compartments How to verify the calibration How to verify the chamber performance 8 4 Theory of Operation Overview 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 8 10 Major Refrigeration Parts 8 10 General Parts 8 10 Series F4 Temperature C
59. temperature controller light 1A is OFF the Heat light is ON Solid State Relay SSR1 is defective shorted Compressors do not run When set point is lower than chamber temperature and temperature controller DigitalOut prompt shows 8 Pressure switch DPS2 is tripped R 404A pressure switch DPS2 trips Trips after operating for a while Ambient temperature may be too high over 90 F Dirty condenser inadequate clearance from back of chamber to the wall Cools down too slow Does not meet published specifications with empty chamber and ambient temperature is not over 80 F Low charge leak Solenoid valve SV1 is defective doesn t close completely Does not cool down at all Both compressors are running Low charge leak Plugged capillary tube Temperature varies more than 0 5 C or 1 C total If tuning PID control parameters in temperature controller were changed If tuning PID control parameters in temperature controller are as shipped from TestEquity and only occurs in cool mode Re enter values as shipped from TestEquity Solenoid valve SV1 may be defective Compressors turn on and off too frequently If compressor control parameters in temperature controller were changed If compressor control parameters in temperature controller are as shipped from TestEquity Re enter values as shipped from TestEquity Solenoid valve SV1 may b
60. the left and right side and 12 from the rear ZA 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 Operation Safety Notices 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 F4SH CKAO 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 TestEquity 115 Temperature Chamber Page 1 1 Chapter 1 Safety Al CAUTION Al CAUTION Al CAUTION Al CAUTION Al CAUTION Al CAUTION Al CAUTION IN WARNING A WARNING A WARNING Page 1 2 The Series F4 Temperature Controller has been properly configured by TestEquity to match the chamber s system requirements and to perform optimally over a wide
61. tion Uncrating Inspect the shipping container for any signs of visible damage Notify the carrier and TestEquity immediately if there are signs of shipping damage Cut the bands that hold the packaging together Remove the top cover and top foam inserts Remove the outer box Remove the front and one side 2x4 retainer from the base of the pallet Remove the foam inserts from the base of the pallet Carefully roll for model 115F and or lift the chamber off the pallet This should be done with at least four people N N Preparation For Use AA WARNING The power cord is equipped with aNEMA 5 20P grounded polarized 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 YES NO NEMA 5 20R NEMA 5 15R 20 Amp Receptacle 15 Amp Receptacle Inspect the chamber for signs of shipping damage Read this entire manual Select a suitable location to install the chamber Connect to a 120 VAC 60 Hz power source with a minimum 20 Amp breaker EA A o Perform the procedure How to verify the chamber performance in the Maintenance chapter of this manual to make sure that no damage has occurred in shipment TestEquity 115 Temperature Chamber Page 2 1 Chapter 2 Installation Installation Location The chamber will
62. tment How to clean the condenser 1 Unplug the chamber from the power source 2 Remove the condenser cover lower panel from the front of the chamber 3 Clean the condenser 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 Page 8 2 TestEquity 115 Temperature Chamber Chapter 8 Maintenance How to inspect the electrical 8 refrigeration machinery compartments WARNING Wear safety goggles when inspecting the refrigeration machinery compartment to protect against a refrigerant line which could break Unplug the chamber from the power source Remove the top side and rear panels 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 Inspect for loose wires and burned insulation near terminals NA eS Inspect for signs of insect or rodent infestation Yes it does happen How to verify the calibration TestEquity recommends verifying the 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 calib
63. tor coil which is located in the air plenum The high stage provides cooling to the cascade condenser 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 condenser of the low stage The high stage uses refrigerant R 404A High pressure liquid refrigerant is fed from the condenser through the liquid line filter drier to a capillary tube with feeds the evaporator circuit of the cascade condenser The capillary tube reduces the pressure of the refrigerant to the evaporating or low side pressure The reduction of pressure on the liquid refrigerant causes it to boil or vaporize absorbing heat which provides a cooling effect The refrigerant vapor travels through the suction line to the compressor 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 low stage uses refrigerant R 508B High pressure liquid refrigerant is fed from the condenser circuit of the cascade condenser through the filter drier and capillary tube The capillary tube feeds the finned evaporator coil which is located in the ai
64. uaranteed Soak Band is set at the factory for 3 0 C Can be changed in the System Menu gt 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 10 Chapter 4 Temperature Controller Digital Event Outputs The Temperature Controller has digital outputs which can be configured as Event Outputs to turn remote devices on and off There are seven Event Outputs which are available for customer use Output number eight is configured to control the refrigeration compressors and is not available for customer use The Event Outputs are accessed from the Main Page To control the Event Outputs 1 Press the Aor Y key to position the Cursor next to the DigitalOut prompt 2 Press the key once You will see Choose Event Output prompt in the lower display 3 Press the Aor Y key to position the Cursor next to the EventOutput prompt which you want to change You will be able to select from EventOutput1 through EventOutput 7 4 Press the key once to select the desired EventOutput Then press the Aor Y key to select On or Off 5 Press the key once to return to the Choose Event Output prompt 6 Press the key once to return back to the Main Page Digital Output Connections See page 12 9 of the Series F4 User s Manual for details on how to connect to the controller s Digital Outputs Event Board Option Your chamber may have b
65. utput 1A Function Choose Cycle Time Enter Cycle Time Hi Power Limit Low Power Limit Heat Fixed Time 6 0 sec 100 0 Main Page Go to Setup Control Output 1B Function Off Alarm Output Menus Main Page Go to Setup Alarm Output 1 2 Name No Alarm Type Process Source Input 1 Latching Alarm Self Clears Silencing Yes Hysterisis 1 7 C 3 0 if F Alarm Sides Both Alarm Logic Open on Alarm Show Message Yes on Main Page NOTE The alarm outputs of the Temperature Controller are NOT connected to the chamber s safety system TestEquity does NOT recommend using the Temperature Controller s alarm function as the main protection device Retransmit Output Menu if retransmit option is ordered Main Page Go to Setup Retransmit Output 1 Retransmit Source Set point 1 Analog Range 0 5V Low Scale 74 0 C 101 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 74 0 C 101 0 if F High Scale 175 0 C 347 0 if F Scale Offset 0 0 Digital Output Menu Main Page Go to Setup Digital Output 1 7 Name No Function Event Output Main Page Go to Setup Digital Output 8 Function Compressor Comp On Power 0 Comp Off Power 70 Compressor Off Delay 60 sec Compressor On Delay 10 sec Communications Menu Main Page Go to Setup Communications Baud Rate 9600 Address 1
66. wide variety of applications and configurations Not all features or functions are applicable Only the capabilities of a model PM6L1AJ 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 115 Temperature Chamber Page 5 1 Chapter 5 Limit Controller Limit Controller Keys and Displays Temperature Units Indicator Indicates whether the temperature is Upper Display displayed in Fahrenheit or Celsius Indicates the actual chamber temperature or displays the value of the parameter in the lower displa
67. y 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 Lin an out of limit condition or the parameter whose value appears in the a Up Down Keys O raw 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 O 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 O 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 O key once again to get the prompt in the lower display This is the High Limit Set Point prompt 4 Press the Aor Y key to enter the desired High Limit Set Point in the upper display 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
68. y 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 1s 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 1f 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 repaired parts Purchaser shall notify TestEquity in writing of any alleged defect within 10 days after its discovery within the warranty p
69. ystem 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 any doubt please call TestEquity before proceeding The correct values are documented in the Series F4 Temperature 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 Temperature 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 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 pas

TestEquity 115 Temperature Chamber Operation and Service Manual

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