TABLE OF CONTENTS Schreiber Engineering
Contents
1. uua PM o o 2 TIME z 2 m DELAY ozo T1 200 2895 m T2 392382 m gt 935572 8 13 5 lt 20 5 m T1 RED a 4 5 8 BLACK Lp 4 N N Low Level Float NO BLACK WHIT E BLACK Ti Water Pump Starter WHITE 1W BLUE NX Compressor 1 Starter Coil ORANGE 56 RED AF A LP Switch HP Switch LLVS 15 PURPLE WHITE 1S RED 24V xu d SII Se lt gt Tank Fill Relay Su DPDT Shown SPDT Sometimes use o x o Float Switch ICE 20 Note Water cooled units a Tank 1 1 ale not equipped Models Single Stage Options with FAN motors Voltage 230 460 Phase 3 Marks Auto Tank Fill ME r Air Cooled Water Cooled LL f LLSV Liquid Line Solenoid Valve Notes All motors have internal overload protection unless otherwise shown eei i On all connections L1 Blue_L2 Black L3 Red i BF Back Flow Kit Solenoid Valve Schreiber Engineering 562 926 3855 121 Park St Cerritos CA 90701 562 926 0969 Fax SETTING SOLID STATE CONTROLS 4 Now a Standard Feature on 50 100 150 200 300 AND 400AC WC Chillers This unit has solid state controls that regulate the temperature of the refrigeration system After the unit is wired to the proper voltage the temperature can be set Setting the Temperature Press and hold the button marked display set point2. Not circulating water TROUBLE SHOOTING PART II REFRIGERATION SYSTEM INTERNAL PRESSURE USING REFRIGERANT R 22 High Pressure Switch Manual Reset Cut out at 425 P S I Low Pressure Switch Automatic Reset Cut out at 25 P S I WORKING REFRIGERANT PRESSURES R 22 High Pressure 185 to 325 P S I Low Pressure 45 to 70 P S I These pressures are under normal ambient temperatures and chilled water temperatures 27 CHILLER PARTS IDENTIFICATION CONDENSER FANMOTOR FANBLADES EXPANSION REFRIGERATION VALVE HEAT EXCHANGER DIAL THERMOMETER INSULATION optional ELECTRICAL _ CHILLED WATER CONTACTORS RETURN TEMPERATURE CONTROL i RESERVOIR optional SUCTION LINE INDICATOR fs LIGHTS S HEAT EXCHANGER SWITCHES DRIER i REFRIGERATION DISCONNECT SIGHT GLASS POWER COMPRESSOR TRANSFORMER _ j RECEIVER TERMINAL MN STRIP HIGH PRESSURE LOW PRESSURE WATER LEVEL WATER PUMP Liste If this unit has special feature s installed see appendix for part number s Part Number Refrigeration R105 R106 R122 R122 W R131 R140 2 R141 1 R146 1 R152 R164 R180 R182 R183 Electrical E101 E101 H E101 S E103 E104 E112 E113 E115 E122 E124 3 E126 E128A E128P D E128P R E132 E134 E145 E148 E153 20 Plumbing P122 S 145 25 P149 WSGA P151 WSG PARTS LIST 200AC WC 460 3 or 230 3 Desc
3. satisfied with motor hold down bolts tight CAUTION Always recheck both alignments after making any adjustment 6 6 1 Correct rotation is right hand clockwise when viewed from the motor end Switch power on and off quickly Observe shaft rotation To change rotation 16 6 1 1 Single phase motor Non reversible 6 1 2 Three phase motor Interchange any two power supply leads 7 1 Before starting pump must be primed free of air and suction pipe full of liquid and discharge valve partially open CAUTION Pumped liquid provides lubrication If pump is run dry rotating parts will seize and mechanical seal will be damaged Do not operate at or near zero flow Energy imparted to the liquid is converted into heat Liquid may flash to vapor Rotating parts require liquid to prevent scoring or seizing 7 2 Make complete check after unit is run under operating conditions and temperature has stabilized Check fro expansion of piping On frame mounted units coupling alignment may have changed due to the temperature differential between pump and motor Recheck alignment 8 Maintenance 8 1 Close coupled Unit Ball bearings are located in and are part of the motor They are permanently lubricated No greasing required 8 2 Frame Mounted Units 8 2 1 Bearing frame should be re greased every 2 000 hours or three month interval whichever occurs first Use a 2 sodium or lithium based grease Fill until greas
4. should come off the shaft with the seal housing 9 4 6 Push out the mechanical seal stationary seat from the motor side of the seal housing 9 5 Disassembly of Bearing Frame 9 5 1 Remove bearing cover 109 9 5 2 Remove shaft assembly from frame 228 9 5 3 Remove lip seals 138 amp 139 from bearing frame and bearing cover if worn and are being replaced 9 5 4 Use bearing puller or arbor press to remove all ball bearing 112 amp 168 10 Reassembly 10 1 All parts should be cleaned before assembly 10 2 Refer to parts list to identify required replacement items Specify pump index or catalog number when ordering parts 10 3 Reassembly is the reverse of disassembly 10 4 Observe the following when reassembling the bearing frame 10 4 1 Replace lip seals if worn or damaged 10 4 2 Replace ball bearings if loose rough or noisy when rotated 10 4 3 Check shaft for permissible is 002 T I P 10 5 Observe the following when reassembling the liquid end runout Maximum 10 5 1 All mechanical seal components must be in good condition or leakage may result Replacement of complete seal assembly whenever seal has been removed is a good standard practice 10 5 2 Inspect casing O ring 513 and replace if damaged This o ring may be lubricated with petroleum jelly to ease assembly 10 5 3 Inspect guidevane O ring 349 and replace if worn CAUTION Do not lubricate guidevane O ring 349 Insure it is not
5. we want to stress that it is essential that WHENEVER ELECTRIC POWER is applied to the motor compressor the terminal PROTECTIVE COVER must be properly in place Servicing refrigeration and air conditioning systems can be dangerous and extreme caution in all respects should be exercised by the personnel servicing such equipment The precautions discussed in this bulletin deal only with those dangers associated with VENTING TERMINALS CRANK CASE HEATERS This unit has a CRANK CASE HEATER on the compressor It is important to the life of this compressor that you follow the instructions This low wattage heater protects the compressor when it is idle by producing just enough heat to keep the Freon from accumulating in the compressor Under certain specific conditions this heater will prevent the compressor from slugging causing damage to its internal parts These Heaters are wired at our factory in such away that allows the heater to be on any time the disconnect switch on the chiller is on When you want to turn the water pump or refrigeration compressor off you must only use the manual switches on the electrical enclosure as marked When you use the disconnect to turn the unit off you kill the power to the crank case heaters ONLY use the disconnect to turn off power if you are going to work on the electrical system AN IMPORTANT FACTOR READ SPECIAL INSTRUCTIONS FOR CRANK CASE HEATER When the unit is first received the power to the chill
6. amp vent Plug Casing S S 412B O ring Drain amp Vent Pug BuneN O ring Casing Buna N Power End Components 109 Bearing Cover Caston Ball Bearing Outboard AISI 303 122 Shaft 138 Lip Seal Inboard 139 Lip Seal Outboard 168 Ball Bearing Inboard 228 Bearing Frame 361 Snap Ring 370 Hex Hd Cap Screw Brg 371 Hex Hd Cap Screw Adapter Mechanical Seals Item 383 Part Metal Crane Ceramic Buna Carbon 18 8 4 Viton 5 5 Option 10K29 Severe Silicon Carbon Option High Temp Option 10K24 Chemical Dui Option 10K55 High Temp 370 513 184 108 18 WARNING Overcharging a refrigeration or air conditioning system can be dangerous ok If a system refrigerant overcharge is sufficient to immerse the major parts of the motor and compressor in liquid refrigerant a situation has been created which when followed by unusual circumstances can lead to compressor housing seam separation or rupture The sequence of circumstances which can lead to compressor housing seam separation or rupture may occur in the following manner a The system overcharge immerses the compressor motor piston connecting rods cylinder etc in liquid refrigerant thereby effectively forming a hydraulic block preventing the compressor from starting This condition is known as locked rotor b El
7. crank case heater to heat the compressor PLEASE READ SECTION ON CRANK CASE HEATER ON PAGE 18 The water pump manual switch controls the operation of the water pump After checking the rotation of the water pump PLEASE NOTE when the water pump is turning the proper rotation The water pump switch must be on in order to check rotation of fan motor The refrigeration system will not run unless the water pump switch is in the on position Set the temperature controller to the desired temperature If the temperature is set below 36 F antifreeze must be added to the water supply tank Use non automotive antifreeze which can be added through the overflow pipe Never add more antifreeze than necessary since it is a poor conductor of heat the cooling capacity of the chiller will be reduced With the temperature controller set the compressor can be turned on by the manual switch The refrigeration system is now running It should be noted that there could be a two to three degree difference between the temperature control setting and the dial thermometer Use the dial thermometer as a guide Once set the temperature controller will control the temperature of the water automatically 10 SPECIAL INSTRUCTIONS WATER PUMP The water pump is controlled by the manual switch for off and on operations The motor on this pump has a built in overload protection as do all the motors in our system ELECTRICAL CONTROLS Control Circuit 24 Volts The con
8. feet are solid Allow grout to harden 48 hours before fully tightening foundation bolts 2 3 5 Tighten pump and motor hold down bolts before connecting the piping to pump 3 Suction Piping 3 1 Low static suction lift and short direct suction piping is desired For suction lift over 10 feet and liquid temperatures over 120 F consult pump performance curve for Net Positive Suction Head Required 3 2 Suction pipe must be as large as the suction connection of the pump Smaller size will degrade performance 3 3 If larger pipe is required and eccentric pipe reducer with straight side up must be installed at the pump 3 4 Installation with pump below source of supply 3 4 1 Install full flow isolation valve in piping for inspection and maintenance CAUTION Do not use suction isolation valve to throttle pump 3 5 Installation with pump above source of supply 3 5 1 Avoid air pockets No part of piping should be higher than pump suction connection Slope piping upward from liquid source 3 5 2 All joints must be airtight 3 5 3 Foot valve to be used only if necessary for priming or to hold prime on intermittent service 3 5 4 Suction strainer open area must be at least triple the pipe area 3 6 Size of the inlet from liquid source and minimum submergence over inlet must be sufficient to prevent air from entering pump through vortexing See figs 2 5 Figure 2 12345676 910111213 1516 V V Velocity in feet pe
9. recirculation of the condenser air because recirculating condensed air can cause the unit to cut off on the high pressure switch If the ceiling is lower than 12 feet a straight duct out of the ceiling should be installed in order to prevent the air from recirculating over the condenser Make up two chilled water lines a discharge and a return line The fitting on the chiller for these lines is 1 pipe coupling IT SHOULD BE NOTED THAT THERE IS A 1 4 COPPER BY PASS LINE BETWEEN THE WATER PUMP AND THE WATER TANK This by pass allows just enough water to circulate through the water system in order to prevent damage to the water pump in case the chilled water discharge is shut off This small amount of water will not affect the efficiency of the unit Fill the chilled water tank through the hose bib which is located on the chilled water return line Fill the tank until it reaches the level as marked on the water sight glass The water level should be kept within 1 of the marked level Do not fill the water tank with deionized water 10 Check the voltage on the chiller to see that it matches your supply When applying power to the water pump by turning the manual switch on make sure all the switches on the control panel are in the off position It is necessary to check the rotation of the water pump The motorg on all pumps have an internal overload protection Power to the unit should be on for 3 hours prior to full usage to allow the
10. this control is set it will control the cycling of the unit automatically Do not set it below freezing unless the proper amount of antifreeze is put into the unit Since antifreeze is a poor conductor of heat never add more than necessary The third control on the circuit is the manual compressor switch It is only used to turn the refrigeration system on or off The fourth part on the circuit is the overload protection on the compressor It will open if the unit becomes low on refrigeration or if the improper voltage is used This part of the circuit is an automatic reset 11 CHILLED WATER CIRCUIT The chilled water is pumped from the chiller s water tank to the discharge outlet of the chiller Then from the discharge outlet the water travels to the object to be cooled through the heat exchanger and returns through the chillers return line into the water tank Be sure to keep all lines full size 1 If the size of the lines is reduced then the flow of water will be restricted and thus resulting in improper chilling Large Insulated Reservoir Evaporator Coils Wall Construction Load to be cooled Large Contaminant free Water pump 12 REFRIGERATION SYSTEM The refrigeration system is a medium temperature system with a range from 35 F to 70 F This is the most efficient range If temperatures below or above this range are required they should be discussed with our engineering department The refrigeration sy
11. ERERI UE Appendix Schreiber Engineering Division of Dova Tech Ltd 12111 East Park Street Cerritos CA 90703 Phone 562 926 3855 Fax 562 926 0969 3 Aloa A The Finest Chiller Built in America P SCHREIBER ENGINEERING 2 Water Chiller Specifications Quality matters Trust the finest or the long term FART MTM Made in America red Dial Thermometer Sight Glass 4 amp Rated at the ARI Standard of 44 F chilled Chilled W water at 95 F ambient Return 1 ETL Tested and Approved access x Door P Large Stainless Steel Pum M N Chilled Wat N Discharge Contaminate Free System with all Disconnect 1 al Water Non Ferrous Components Reservolr i 99 Fill S A P Highly Durable Powder Coated Finish N Pump Rotation pP 4 P Energy Savings Design Which Does Check Not Use Hot Gas Bypass A cM 29 014 30 Cabinet Dimensions Width 30 1 Height 42 t Depth 46 The 200 AC is rated to meet or exceed the ARI American Refrigeration MODEL NUMBER Institute s national standard of 44 F chilled water at 95 F ambient The CAPACITY design and components of this chiller built to deliver long life of BTU PER HOUR commercial duty application for process equipment If you have FLUID R
12. ESERVOIR CAPACITY 45 gallons questions regarding load calculation installation service or parts WEIGHT please call our Service Department 562 926 3855 VOLTAGE 230 3 460 3 AMPERAGE CAUTION Do nat overcharge this refrigeration system The refrigeration sight glass is only an indicator of the charging system The sight glass should never be filled when charging the system The sight gass will always be fuzzy Overcharging the system will damage the compressor FLUID CIRCULATING PUMP FLUID PUMP GPM 30 38 0p si 12111 E Park Street THE SCHREIBER WARRANTY Schreiber Engineering warrants the product described herein against defective material or workman ship for one year Fior tho date of purchase any part is found to be defective within the warranty period Schreiber Engineering or its authoraed service agent will replace or at Schreibers options repair the part free of charge for materials and labor This warrarty does not cover damage caused by misese accident abuse incorrect installation or operation I addition it does not cover damage eccurring during transit damage caused by or resulting from repair or modifications carried eut by anyone other than Schreiber Engineering or ts Authorized Service Agent SUPERI QUALITY Cerritos CA 90703 tel 562 926 3855 SINCE 1958 fax 562 926 0969 www schreibereng cormn 2000 Schrei
13. TABLE OF CONTENTS Model M t bot Uu 1 RTEA KE ESSE A E ea sede 2 Starting Check List ER c DU 3 Wining ciet rr r E ET E ER 5 Setting Electronic Controls amp Electronic Control 6 Chilled Water Distribution Piping 8 Installation Instr loris 14 on cen ie A SIRE eos 9 special Instdcljli5 ut etc Mp sae 11 gas A ded 14 i i 15 Refrigeration System eco d I o dabo de n Qu i pide ds 19 Service DUONG 20 Grank Case Heaters sara oo icu 23 Maintenance Information 2 5 tix cuo pe ep einge ee kae Re uo EH ER o nro Pa e ERU DIRN SP P RAN 24 Trouble Shooting Pan lt eos et o et b se b bete s decet s Lees te 26 Trouble Shooting eate rv ERR Er Rcx 27 Chiller Parts Identification aeo eroe der Elson ted rm Pa Kitts 28 lp ep IL PP 29 Limited Warranty X ABA ERU anus KE CORAN MEAS ARR Rs ERI abl 30 Special Feature S nne RE muss aus E M
14. amage to carrier dealer immediately 1 2 Electrical supply must be a separate branch circuit with fuses or circuit breakers wire sizes etc per National and local electrical codes Install an all leg disconnect switch near pump CAUTION Always disconnect electrical power when handling pump of controls 1 3 Motors must be wired for proper voltage Motor wiring diagram is on motor nameplate Wire size must limit maximum voltage drop to 10 of nameplate voltage at motor terminals or motor life and pump performance will be lowered 1 4 Always use horsepower rated switches contactor and starters 1 5 Motor Protection 1 5 1 Single phase Thermal protection for single phase units is sometimes built in check nameplate If no built in protection is provided use a contactor with a proper overload Fusing is permissible 1 5 2 Three phase Provide three leg protection with properly sized magnetic starter and thermal overloads 1 6 Maximum Operating Limits Liquid Temperature 212F 100C with standard seal 250F 120C with optional high temp seal Pressure 75 PSI Starts Per Hour 20 evenly distributed 1 7 Regular inspection and maintenance will increase service life Base schedule on operating time Refer to section 8 15 2 Installation 2 1 General 2 1 1 Locate pump as near liquid source as possible below level of liquid for automatic operation 2 1 2 Protect from freezing or flooding 2 1 3 Al
15. as you turn the set point screw The temperature shown on the discharge temperature display will indicate the temperature set point as you turn the set point screw Press button marked display return and the screen will now show return temperature Checking Temperature Set Points To check the temperature set points just press display set point for the compressor 1 set point press display return for the compressor 2 set point Part Number E128A The Finest Chiller Built in America G SCHREIBER ENGINEERING Electronic Control Panel Standard Feature on 50 100 150 200 300 400 Series Chillers DISCHARGE TEMPERATURE CONTROL y N 12111 E Park Street SUPERIOR Available in Remote Version QU L M Cerritos 90703 Selecting the remote option allows you to place the chiller outdoors or in a hard to reach indoor location and then tel 562 926 3855 SINCE 1958 E control the chiller from more convenient location fax 562 926 0969 2 www tryeton com CHILLED WATER DISTRIBUTION PIPING The chilled water distribution piping is an important factor in the performance of the water chiller Proper piping will add to the of your chiller This chiller is designed to be a containment free system The chilled water piping should be the same NO BLACK IRON PIPE 1 If you are installing this water chiller to some existing chiller water lines Black or galvanized there is a goo
16. ber Engineering Corp 200 AC ac Specifications ssbjoct to chonge A WARNING A ELECTRICAL HAZARDS 1 TURN OFF MAIN POWFR DISCONNECT SWITCH ON THIS MACHINE BEFORE ATTEMPTING TO SERVICE THIS EQUIPMENT 2 THIS MACHINE IS PORTABLE DISCONNECT ALL POWER SOURCES BEFORE REMOVING CONTROL COVERS 3 USER IS RESPONSIBLE FOR LOSS OF OR FAILURE TO USE AND MAINTAIN ANTI HAZARD PROTECTIVE COVERS FOR ELECTRICAL EQUIPMENT AS FURNISHED BY THE MANUFACTURER OF THIS MACHINE 4 SHOULD YOU FIND IT NECESSARY TO MAKE ANY REPAIRS TO THE REFRIGERATION BECAUSE REPAIR CAN BE HAZARDOUS READ THE UNIT MANUAL UNDER REFRIGERATION OR CALL THE MANUFACTURER AND SELLER PLEASE NOTE THE DANGER OF OVER CHARGING THE REFRIGERATION SYSTEM Failure to read and observe above precautionary warnings are serious offenses under Public Law 91 596 Ai employees are hereby notified that the employer and owner of this equipment under OSHA must take immediate disciplinary action up to and including dismissal for failure to read and comply with this notice Tu Comply With OSHA All Warning Signs Must Not Be Removed From This Water Chilling Equipment m go LESA eee Vp trae mt n 2 s fos it WATER CHILLER STARTING CHECKLIST PROPER VOLTAGE Check the voltage on the chiller to see that it matches your power supply CRANK CASE HEATER Power to the unit should be on for 3 hours prior to full usage to allow the crank cas
17. d chance there will be rust in this system If you cannot flush this system clean then it should not be used A rust contaminated system will cause damage to the copper evaporator heat exchanger Should this be a new system and you are installing chilled water piping We suggest using PVC piping if allowed It is a poor conductor of heat so you do not loose as much BTU capacity in the movement of the chilled water and there is no rusting Copper line will prevent any rusting but there is greater heat loss You might want to insulate these lines Should the water chiller be installed next to your cooling load We would suggest rubber hose This would prevent any great heat loss And there would also be no contamination If black pipe galvanize iron and steel pipe are your piping of choice you should be aware of the corrosiveness of these materials Black Iron will damage the watering system Female connections to chiller are brass If your connections to the chiller are anything other than PVC copper or rubber hose you should consult with your local plumbing supplier about the use of dielectric pipe connections when dissimilar metals are used If we can be of any assistance with this please call the manufacturer Keep in mind you should keep all chilled water lines full size If your chiller has 1 NPT then the chilled water lines should be no less INSTALLATION INSTRUCTIONS Air or Water Cooled Chillers When the chiller is rece
18. e heater to heat the compressor PLEASE READ SECTION ON CRANK CASE HEATER ON PAGE 17 MOTOR ROTATION Make sure the fan motors and water pumps are running in the correct rotation If the water pumps run for more than a short period in the wrong direction the seal might back off the shaft To test if the water pumps are rotating in the correct direction turn the pump switch on and off quickly The compressor switch is used to test the fan motors rotation The compressors to this unit alwavs run in the correct rotation SERVICE ACCESS PANEL The service access panel must be in place when the unit is running If it is not in place the unit will cut off on the high pressure limit switch or be inefficient in its capacity Also it is dangerous to install panels while the unit is running PLEASE READ IMPORTANT TEMPERATURE CONTROL The temperature control and the dial thermometer is reading the discharge water temperature in Fahrenheit All controls read in Fahrenheit CONT WATER CHILLER STARTING CHECKLIST 3 ELECTRIC POWER A good test to make sure power is off to the unit is to turn on the water pump switch If power is on the light on this pump will be on We recommend you take caution in all judgment about the power being on The best test to find if the power is on is to use a voltmeter Please Note A single phase condition can cause a pilot light to be out and still have voltage to the unit TESTING STANDARDS All compon
19. e comes out of relief fittings or lip seals then wipe off excess 8 2 2 Follow motor and coupling manufacturers lubrication instructions 8 2 3 Alignment must be rechecked after any maintenance work involving and disturbance of the unit 9 Disassembly Complete disassembly of the product will be described Proceed only as far as required to perform the maintenance work needed 9 1 Turn off Power 9 2 Drain system Flush if necessary 9 3 Close Coupled Units Remove motor hold down bolts Frame Mounted Units Remove coupling spacer coupling spacer coupling guard and frame hold down bolts 9 4 Disassembly of Liquid End 9 4 1 Remove casing bolts 370 9 4 2 Remove back pull out assembly from casing 100 9 4 3 Remove impeller locknut 304 CAUTION Do not insert screwdriver between impeller vanes to prevent rotation of close coupled units Remove cap at opposite end of motor A screwdriver slot or a pair of flats will be exposed Using them will prevent impeller damage 17 9 4 4 Remove impeller 101 by turning counter clockwise when looking at the front of the pump Protect hand with rag or glove CAUTION Failure to remove impeller in a counter clockwise direction may damage threading on the impeller shaft or both 9 4 5 With two pry bars 180 apart and inserted between the seal housing 184 and the motor adapter 108 carefully separated the two parts The mechanical seal rotary unit 383
20. e liquid line to the expansion valve Then pump the system down until there is two or three pounds of gauge pressure Remove the power element and install the replacement power element open the receivers liquid line valve TEST FOR LEAKS and restart the unit Remember call the factory before you do any work on the expansion valve 25 Compressor won t run Compressor runs No refrigeration High pressure trips Low pressure switch Cutting out Temperature too high Temperature too cold TROUBLE SHOOTING PART 1 SYMPTOM DIAGNOSIS REMEDY Check Power supply Electrical circuit Check Line load voltage Temperature control Compressor overload Low pressure switch High pressure switch Manual switch Compressor All control circuit Refrigerant leak Stuck expansion valve Condenser motor Air over condenser restricted Service panel not in place Defective expansion Refrigerant leak Dial thermometer Temperature controller Water pump off Temperature controller Dial thermometer Water pump 26 Correct circuit breaker Repair or replace bad circuit Correct voltage condition Repair or replace Replace Repair or replace Repair or replace Replace Replace Repair Repair leak and recharge Replace expansion valve Repair or replace motor Clean condenser Install service panel Replace expansion valve Repair leak Re adjust or replace Replace Check controls circuit Repair or replace Out of adjustment
21. e water sight glass You cannot damage the refrigeration system by the water being at a low level it will only effect the efficiency of the unit Caution The compressor receivers and water pump could be hot enough to injure one touching these components The dial thermometer is reading the temperature of the discharge chilled water Please note This is a hermetically sealed compressor There are no necessary maintenance requirements Please read the service bulletins before making any repairs SPECIAL NOTICE To clean the condenser it is necessary to remove the access panel and pulling it out at the bottom When this panel is removed you can brush away all the foreign matter You must always put this access panel back in place or the unit could cut out on high head pressure CAUTION The fins on this condenser coil can be bent very easily If you use another type of brush make sure it is soft enough to not damage the condenser You can also blow out the with compressed air 24 MAINTENANCE INFORMATION Part Il NOTICE OF EXPANSION VALVE This is a standard Alco Expansion Valve Model TLCE size HW These valves come from the factory pre set For the proper super heat do not try to adjust the super heat on this valve unless you call the factory service department This Alco valve is one of the most reliable parts If this valve needs to be changed out do it without losing the R 22 charge To do this turn the receiver off at th
22. ectric current continues to flow through the compressor motor windings that become in effect electric resistance heaters The heat produced begins to vaporize the excessive refrigerant liquid overcharge causing a rapid increase in system pressure c If the system compressor protective devices fail for any reason prior to or during this locked rotor heating cycle or cycles liquid refrigerant may be vaporized sufficiently fast enough to raise the pressure within the system to extremes far in excess of the housing or weld seam design limits d In some instances where the amount of refrigerant overcharge is critical in proportion to the system internal volume the pressure reached can cause a compressor housing seam separation or rupture which can be hazardous The remedy to eliminate this exceedingly rare but potential hazard is to use correct refrigerant charging amounts and techniques Tecumseh Products Company urges that all individuals responsible for training teaching or advising installation mechanics and service personnel must emphasize proper charging techniques and strict adherence to limiting refrigerant charge amounts to those specifically recommended by the manufacturer of the refrigeration air conditioning or heat pump system 19 SERVICE BULLETIN HERMETIC COMPRESSOR ELECTRICAL TERMINAL VENTING CAN BE DANGEROUS When the insulating material which supports a hermetic compressor electrical terminal suddenly disinteg
23. ed and whenever the system is field processed as a result of field service Field service includes but is not limited to leak repairs or compressor replacement Eliminating air within the system prevents ignition at or in the hermetic compressor if a terminal should vent thereby reducing the hazard potential To reduce the possibility of external ignition all open flame electrical power and other heat sources should be extinguished or turned off prior to servicing a system Before using a soldering or welding torch to remove or repair tubing make sure all the system refrigerant charge has safely been released A venting terminal presents no danger to servicing personnel or anyone else in the vicinity if the compressor terminal PROTECTIVE COVER is properly in place as shown on Tecumseh Products Company drawings and diagrams using the parts as shown on Tecumseh Products Company bills of material 20 Hermetic compressors can be properly serviced without unnecessarily removing the terminal PROTECTIVE COVER by adhering to the following service procedures 1 If the branch circuit short circuit and ground fault protective device i e fuse or circuit breaker is open this is a strong indication that an electrical problem exists and must be found and corrected The circuit protective device rating must first be checked as required by the National Electrical Code and its maximum rating should coincide with that marked on the equi
24. ents on the chiller meet UL s standards The system is tested under 250 pounds of pressure All motors have internal overload protection except where noted ANTIFREEZE Keep the water tank filled at the proper level Add antifreeze if you are going to operate the unit at 38 F or lower DEIONIZED WATER DO NOT USE DEIONIZED WATER IN THE TANK Deionized water will cause damage to the copper evaporator TANK FILL Use the separate 1 2 line marked tank fill to fill the chiller See number eight on the specification sheet for locations page one RED 13 BLACK 2 BLUE 1 Terminal Block Connections Comp Contactor Pump Contactor TC TC TC Float Low Level Cutout Pressure Switch Conn T1 T2 T3 T1 T2 T3 Pressure Swich Conn 1W O ro Q Q Q 24 Vac C 24 Vac Black Purple 1O0 CH Pink Cl Pre Low Level Warning White C Red Power Supply MYDOG SCHREIBER ELECTRICAL NEWELECTRICAL SINGLE STAGE Single stage chiller_BF_Auto Tank fill Red Disch Temp Senor Yellow Black Ret Temp Senor Yellow White Black Orange Dry Contacts NO Yellow 24V
25. er should be on for 3 hours That means you must at this time have the unit disconnect on The manual water pump and refrigeration switches should be off This will allow the refrigeration compressor to warm up driving out the freon R22 that had migrated to the compressor This start up time is necessary if you have all the power off for 12 hours or more Then you must allow this same warm up time It is okay to turn the unit off by the manual switch only and not the main power Then you do not need to be concern about a warm up time The crank case heater is HIGH VOLTAGE But it is only very low wattage Caution should be taken when working on the crank case heater to make sure the POWER is off Any question call for more details Schreiber Engineering Corporation 562 926 3855 23 MAINTENANCE INFORMATION There are no lubrication points on the chiller All motors have permanent lubrication in the bearings The water that is used in the chilled water circuit has no special requirements except that deionized water cannot be used The water should be clean and some type of water conditioner can be used Nothing should be used in the chilled water circuit that could damage the all copper Heat Exchanger THIS INCLUDES THE USE OF DEIONIZED WATER The air cooled condenser should be cleaned on a regular basis depending on the environment the chiller is installed in The water level should be maintained as close to the level as marked on th
26. ived check forgany shipping damage If any is found a freight claim should be filed at once with the carrier This water chiller is designed with a contaminant free chilled water system stainless steel reservoir and all copper evaporator Installed properly it will give you years of trouble free service Therefore it is important that the chilled water piping system you are using to plumb this water chiller is also as contaminant free as possible When you take this into consideration you will have a most efficient water cooling system Should you need assistance to clean up an old chilled water system or to keep a new system clean we suggest you contact your local water treatment company Place the water chiller in an area that allows easy access to the service doors and control panel for routine maintenance and inspection For the air cooled unit make sure it is in an area where there is good air circulation over the condenser inlet 24 from any obstruction For the water cooled unit make sure it has a good water supply by keeping the piping to the condenser 1 in size Restriction of air to the air cooled condenser or water to the water cooled unit will not only affect the efficiency of the unit but will also cause damage to the refrigeration system Note Do not mix up the inlet and the outlet to the condenser on water cooled units Water cooled takes 3 gpm per ton Make sure the ceiling above the fan discharge is over 12 feet to avoid
27. low adequate space for servicing and ventilation 2 1 4 All piping must be supported independently of the pump and must line up naturally CAUTION Never draw piping into place by forcing the pump suction and discharge connections 2 1 5 Avoid unnecessary fittings Select sizes to keep friction losses to a minimum 2 2 Close Coupled Units 2 2 1 Units may be installed horizontally inclined or vertically CAUTION Do not install with motor below pump Any leakage or condensation will affect the motor 2 2 2 Foundation must be flat and substantial to eliminate strain when tightening bolts Use rubber mounts to minimize noise and vibration 2 2 3 Tighten motor hold down bolts before connecting piping to pump 2 3 Frame Mounted Units 2 3 1 Bedplate must be grouted to a foundation with solid footing Refer to Fig 1 1 2 to 3 4 Allowance place for leveling Figure 1 IM013R01 2 3 2 Place unit in position on wedges located at four points two below approximate center of driver and two below approximate center of pump Adjust wedges to level unit Level or plumb suction and discharge flanges 2 3 3 Make sure bedplate is not distorted and final coupling alignment can be made within the limits of movement of motor and by shimming if necessary 2 3 4 Tighten foundation bolts finger tight and build dam around foundation Pour grout under bedplate making sure the areas under pump and motor
28. nd is indicated then carefully remove the compressor terminal ROTECTIVE COVER and inspect for loose leads or insulation breaks in the lead wires If 6 indicates no visible problem carefully remove the leads at the compressor terminals CAUTION Damage can occur to the glass embedded terminals at this point if the leads are not properly removed which can result in the terminal venting and hot oil discharging No ignition however can occur if all power is disconnected and no external ignition source is present 21 8 Repeat 5 testing carefully checking for ground directly between each compressor terminal C S amp R and ground 9 If once again a ground is indicated proceed to properly replace the compressor as it has failed and cannot be repaired 10 Itis important to note that a volt ohmmeter may be used only to check the resistance and or continuity of the motor windings This may be done as follows a For internal overload protected motor compressor the overload is located between the common terminal of the compressor and the common motor lead inside the compressor If the resistance reading between Common and Start or Common and Run is open infinity and the resistance reading between Start and Run indicates winding Resistance Values in the Tecumseh Hermetic Compressor Service Data Book then the internal protector is open and time must be allowed for it to reset Any Common and Start Common and Run and Start and Run
29. of the condenser s water supply 13 FAN MOTORS SPECIFICATIONS H P 1 2 VOLTAGE 220 230 440 3 Phase HZ 50 60 RPM 1140 OVERLOAD Automatic Internal FRAME LA56 MTG Rigid Open Motor CAT NO Leeson 115726 ROTATION Motor runs clockwise CW FAN BLADE 18 x 23 SAFETY Avoid personal injury or equipment damage by disconnecting electrical power before working on the motor Make sure the power is off when checking each phase MAINTENANCE 1 There are no lubrication points therefore no lubrication is necessary 2 Make sure the blade runs in the correct rotation Clean the outside of the fan motor as necessary OG amp L A GOULDS PUMPS COMPANY Installation Operation and Maintenance Instructions Model NPE NPE F DESCRIPTION amp SPECIFICATIONS The models NPE close coupled and NPE F frame mounted are end suction single stage centrifugal pumps for general liquid transfer service booster applications etc Liquid end construction is all AISI Type 304 stainless steel stamped and welded Impellers are fully enclosed non trimable to immediate diameters Casings are fitted with a diffuser for efficiency and for negligible radial shaft loading Close coupled units have NEMA 48J or 56J motors with C face mounting and threaded shaft extension Frame mounted units can be coupled to motors through a spacer coupling or belt driven 1 Important 1 1 Inspect unit for damage Report any d
30. pinched by the impeller on reassembly 10 6 Check reassembled unit for binding Correct as required 10 7 Tighten casing bolts in a star pattern to prevent O ring binding 11 Trouble Shooting Chart Motor Not Running See causes 1 6 Little or No Liquid Delivered See causes 7 17 Power Consumption Too High See causes 4 17 19 22 Excessive Noise and Vibration See causes 4 6 9 13 15 16 18 20 22 Probable Cause 1 Tripped thermal protector 2 Open circuit breaker 3 Blown fuse 4 Rotating parts binding 5 Motor wired improperly 6 Defective motor 7 Not primed 8 Discharge plugged or valve closed 9 Incorrect Rotation 10 Foot valve too small suction not submerged inlet screen plugged 11 Low voltage 12 Phase loss 3 phase only 13 Air or gasses in liquid 14 System head too high 15 NPSHA too low Suction lift too high or suction losses excessive Check with vacuum gauge 16 Impeller worn or plugged 17 Incorrect impeller diameter 18 Head too low causing excessive flow rate 19 Viscosity or specific gravity too high 20 Worn bearings 21 Pump or piping loose 22 Pump and motor misaligned 184 108 383 347 370 513 123 Liquid End Components Materials Impeller o 1 AISI304 Stainless Impeller Locknut Steel 347 349 Socket Hd Screws Casing wow Mechanical Seal AISI 304 408 Drain
31. pment nameplate and or on the unit wiring diagram and or instructions This breaker or fuse rating should be as low as practical A rule of thumb is 175 times the motor compressor RLA FLA on older units as shown on the unit nameplate It is acceptable to first replace the fuse or reset the circuit breaker ONE TIME to determine if it was just a nuisance opening WARNING The terminal PROTECTIVE COVER must be securely in place If the fuse or circuit breaker again opens DO NOT continue to replace or reset as the equipment obviously has an electrical problem CAUTION Continual resetting may cause the terminal to vent DISCONNECT all power to the unit making sure all power legs are open Without removing the terminal PROTECTIVE COVER disconnect the three leads going to the compressor terminals at the nearest point to the compressor and identify them as Common C Start S and Run R Identification can generally be made through the unit wiring diagram DO NOT disconnect at the compressor terminals at this time With a Megger Hi Potential Ground Tester or other suitable instruments which puts out a voltage between 300 and 1500 volts check for a ground separately between each of the three C S amp R leads and ground such as an unpainted tube on the compressor Do not use a low voltage output instrument such as a volt ohmmeter or other such continuity instruments as these will not detect a low level fault ground If a grou
32. r its authorized service agent will replace or at Schreiber s options re pair the part free of charge for materials and labor This warranty does not cover damage caused by misuse accident abuse incorrect installation or operation In addition it does not cover damage occurring during transit or damage caused by or resulting from repair or modifications carried out by anyone other than Schreiber or its Authorized Service Agent 562 926 3855
33. r second GPM x 0 321 GPM x 0 4085 Area be Figure 5 Figure 4 4 Discharge Piping 4 1 Arrangement must include a check valve located between a gate valve and the pump The gate valve is for regulation of capacity or for inspection of the pump or check valve 4 2 If an increaser is required place between check valve and pump 4 3 Use 3 4 wraps of Teflon tape to seal threaded connections 5 Motor To Pump Shaft Alignment 5 1 Close coupled Units 5 1 1 No field alignment necessary 5 2 Frame Mounted Units 5 2 1 Even though the pump motor unit may have a factory alignment this could be disturbed in transit and must be checked prior to running Figure 6 5 2 2 Tighten all hold down bolts before checking the alignment 5 2 3 If re alignment is necessary always move the motor Shim is required 5 2 4 Parallel misalignment shafts with axis parallel but not concentric Place a dial indicator on one hub and rotate this hub 360 while taking readings on the outside diameter of the other hub Parallel alignment occurs when Total indicator reading is 005 or less 5 2 5 Angular misalignment shafts with axiz parallel but not concentric Place dial indicator on one hub and rotate this hub 360 while taking readings on the face of the other hub Angular alignment is achieved when Total Indicator Reading is 005 or less 5 2 6 Final alignment is achieved when parallel and angular requirements are
34. rates due to physical abuse or as a result of an electrical short between the terminal and the compressor housing the terminal may be expelled venting the vaporous and liquid contents of the compressor housing and system If the hermetic compressor terminal PROTECTIVE COVER is not properly in place with its weatherproofing gasket if required and bale strap fastening device secured there is a remote possibility if a terminal vents that the vaporous and liquid discharge can be ignited spouting flames several feet causing potentially severe or fatal injury to anyone in its path The discharge from a venting terminal can be ignited external to the compressor if the terminal PROTECTIVE COVER is not properly in place and if the discharge impinges on a sufficient heat source such as but not limited to an open flame electric heater or an electrical spark Ignition of the discharge can also occur at the venting terminal or inside the motor compressor enclosure if there is sufficient contaminant air present in the system and an electrical arc occurs as the terminal vents Ignition cannot occur at the venting terminal without the presence of contaminant air and cannot occur externally from the venting terminal without the presence of an external ignition source It is therefore essential that any air in a refrigeration air conditioning or heat pump system be completely removed when the system is manufactured when the system is install
35. resistance reading must be within the values shown in Tecumseh Hermetic Compressor Service Data Book Three phase internal overloads open all three phases Therefore allow time for reset b For external overload protected motor compressors the continuity of the overload may be checked The resistance of all winding may also be checked i e C S C R and S R c lack of continuity other than test indicating an open internal protector or improper resistance indicates a faulty or damaged motor and the compressor must be properly replaced as it has failed and cannot be repaired If the above indicates no problem with the compressor then carefully reconnect the leads to the proper compressor terminals C S amp R correctly replace the terminal PROTECTIVE COVER gasket if required and the bale strap Then proceed to conduct similar ground and continuity test from the three lead connection points which you previously disconnected forward toward the incoming power connections to find the electrical problem DO NOT reset the ground fault protective device until you have located and corrected the problem Refer to the Unit Wiring Diagram and Service Manual for the proper procedure and wiring checkout The text of step by step procedures uses language and symbols which refer to the electrical supply as single phase Three phase equipment should be given equally cautious consideration when service is necessary 22 Again
36. ription Compressor 220 3 3 HP Compressor 440 3 3 HP Condenser Air Cooled Condenser Water Cooled Receiver 1 3 Ton Expansion Valve 2 HW Expansion Valve Flange Refrigeration Sight Glass Refrigeration Drier 3 8 Evaporator All Copper Suction Line Heat Exchanger High Pressure Switch Low Pressure Switch Disconnect 80 Amp Disconnect Handle Only Disconnect Shaft Only Contactors 30 Amps 4 Point Terminal Block Transformer 220 3 Transformer 440 3 Grounding Screw Off On Switch Pilot Light Bulb 24v Pilot Light Assembly Solid State control Board Half thru 4 Ton Discharge Probe amp Wire Return Probe amp Wire Thermostat Dial Thermometer Fan Motor HP Fan Blade 18 Fan Guard for 18 Blade 1 HP Stainless Steel Water Pump Seal amp O Ring Kit for Water Pump Water Sight Glass Assembly Water Sight Glass Only 460 3 230 3 Qty SES SES S SES SES SES SS S SES SES ES SES SES SES AS lt lt 54 lt lt SES SES SES SS SES SE SS SES SES SES SS lt lt 54 S I l3 l l3 14 ft 14 ft 2 Schreiber Limited Warranty Schreiber warrants the product described herein against defective material or workmanship for one year from the date of purchase If any part is found to be defective within the war ranty period Schreiber o
37. stem also includes a hermetically sealed refrigeration system and all parts except the evaporator coil are standard to the refrigeration industry The evaporator coil is installed in a stainless steel tank and the tank on each unit has a large area This large area allows better control of water temperature and causes the water flow not to be restricted resulting in better water circulation Any repairs to the refrigeration system should be done by a qualified refrigeration company Schreiber Engineering will always have a service engineer available to answer any questions regarding chiller service This unit has a service valve on the suction and discharge line The suction line has its valve on the suction line The high pressure or discharge service line is on the receiver This unit is charged with R 22 DO NOT OVERCHARGE because this will cause damage to the compressor The refrigeration sight glass is fuzzy until the unit reaches it s proper temperature MAINTAINING THE CHILLER Very little maintenance is required on this unit It might be necessary to clean out the heat exchanger located within the water tank only depending on the condition of the water used in the chilled water circuit It might also be necessary to blow out the condenser from time to time depending on the environment of the installed unit Finally the water cooled condenser needs to be flushed out once in a while The frequency of this process depends on the condition
38. trol circuit for the refrigeration system has several controls wired in series First are the high and low pressure switches that are mounted in the control panel The high pressure switch will shut off the refrigeration system in the event the pressure is too high High pressure can be caused by the condenser becoming restricted by foreign material on the outside surface of the condenser or if the fan motor is not running If the high pressure limit switch should cut out there is a manual reset switch which is located at the control panel on the right side In order to reset this switch the disconnect switch and the switch must be turned off and the control panel door must be open If and when the high pressure switch is off check the Trouble Shooting chart for diagnosis The low pressure switch will cut out at any time the pressure in the refrigeration system is below 25 psi Low psi can be caused by a freeze up in the water tank a leak in the refrigeration system if the system is low on Freon R 22 or if there is any sort of restriction in the system If the switch cuts out it will automatically reset Never try to adjust the high and low pressure switches or by pass them or serious damage to the system will result Adjustment should only be made after the internal pressure of the refrigeration system has been read The second control of the circuit is the temperature controller It controls the cycling of the refrigeration system Once
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