Carrier 06D User's Manual
Contents
1. 12 Testing Oil 12 Cylinder 14 Service Replacement Compressors 14 Suction and Discharge Valve Plate Assembly 15 Cleaning Suction Strainer 16 Motor Replacement 16 Terminal Plate Assembly 16 Compressor Running Gear Removal 16 Compressor Running Gear Replacement 17 COMPRESSOR MOTOR BURNOUT 17 Clean Up 17 TROUBLESHOOTING 18 19 SAFETY CONSIDERATIONS Installing starting up and servicing this equipment can be hazardous due to system pressures electrical components and equipment location roofs elevated structures etc Only trained qualified installers and service mechanics should install start up and service this equipment When working on the equipment observe precautions in the literature tags stickers and labels attached to the equipment and any other safety precautions that apply Follow all safety codes Wear safety glasses and work gloves Use care in handling rigging and setting bulky equipment A WARNING Electrical shock can cause personal injury and even death Be sure power to equipment is shut off before installing or servicing this equipment There may be more than one disconnect Tag disconnect s to alert others not to tur2. UNLOADER VALVE SPRING CONTROL SET COVER PLATE POINT ADJ NUT PPET VALVE Po VALVE BLEED ORIFICE SUCTION PRESSURE asd GGG DISCHARGE PRESSURE ep LOADED PRESSURE DIFFERENTIAL SEALING UNLOADER UNLOADER UNLOADER ADJUSTMENT SCREW CAP PISTON HEAD VALVE BODY ASSEMBLY CAPACITY CONTROL VALVE UNLOADER lt ee b VALVE SPRING a Ni CONTROL SET yz N COVER PLATE POINT ADJ NUT ams POPPET VALVE VALVE PLATE BLEED ORIFICE E SUCTION PRESSURE DISCHARGE PRESSURE HS ae SUCTION UNLOADED Fig 8 Capacity Control Valve Operation FILL CONDENSER WITH CLEANING SOLUTION DO NOT ADD SOLUTION MORE RAPIDLY THAN VENT CAN EXHAUST GASES CAUSED BY CENTRIFUGAL PUMP 1 2 HP f CLOSE VENT PIPE CHEMICAL ACTION 30 GPM AT 35 HEAD GAS VENT gt VALVE WHEN PRIMING PUMP IS PUMP CONN GLOBE RUNNING 3 TOF SUCTION PUMP SUPPORT CONDENSER CONDENSER REMOVE WATER REGULATING VALVE SCREEN Fig 9 Gravity Circulation Fig 10 Forced Circulation 11 SERVICE A DANGER Do not remove the compressor terminal box cover until all electrical power is disconnected and pressure is relieved Terminal pins may blow out causing injuries death and or fire Service Notes 1 Where compressor components are shown they are in normal order of removal from compressor 2 For replacement items use Carrier specified parts See Car
3. units Fig 1 suction and discharge to compressor unit Fig 2 When soldering or brazing piping to valves disassem ble valve or wrap it in a wet cloth to prevent heat damage Allow flexibility in suction line so compressor suction valve may be moved aside for access to suction strainer Manufacturer reserves the right to discontinue or change at any time specifications or designs without notice and without incurring obligations Book 2 2 4 4 PC 802 Tab 1b 2a 2b 3a Catalog No 530 608 Printed in U S A Form 06 07D 3SI Pg 1 802 7 02 Replaces 06 07D 2SI DIMENSIONS in DISCHARGE VALVE SUCTION VALVE UNIT 07D WIDTH A m A203 30 i B205 30 L A208 399 16 E B210 519 16 H B212 519 46 B215 6313 16 tr 7 1 4 1 172 TX 1 1 2 10 1 2 29 1 2 13 1 2 NOTES 1 For standard service practices such as trouble shooting and refrigerant charging allow a minimum 2 6 clearance around the unit WATER 2 Recommended service space for condenser tube OUTLET removal is one condenser length at either end 3 For compressor removal allow a minimum 3 wide access aisle to and from the unit 4 Local codes or jurisdiction may prevail for unit clearances 7 15 16 4 15 16 6 INLET WATER CONNECTIONS FOR 07DB215 UNIT ONLY Fig 1 07D Condensing Unit Dimensions DISCHARGE VALVE NOTES 1 For standard service practices such as trouble shooting and ref
4. CONTACTS IN CIRCUIT 5 RELOCATE TR i IN Bk md venen Kp I IN CIRCU i TR pO I HPS SEs Al J 2 0 KO gt M4 db dp 9 AUX CONTACTS TR CONTROL CONTROL B2 THERMO TB2 THERMO T L Ro 0 8 CITY WATER COOLING TOWER AIR COOLED CONDENSER EVAPORATIVE CONDENSER LEGEND AUX Auxiliary OL Overload Relay Contactor POR Pumpout Relay CR Control Relay SW Switch HPS High Pressure Switch TB Terminal Block LLS Liquid Line Solenoid Valve TR Timer Relay LPS Low Pressure Switch Factory Wiring M3 Evaporator Fan or Chilled Water Pump Field Wiring M4 Cooling Tower Pump Air Cooled or Evaporative Condenser Fan M5 Cooling Tower Fan or Optional Evaporative Condenser Pump Fig 6 Recommended Field Wiring Refrigerant Charging A CAUTION When charging or when removing charge circulate water through water cooled condenser s and cooler continuously to prevent freezing Freezing damage is considered abuse and is not covered by Carrier warranty EVACUATE DEHYDRATE AND LEAK TEST Entire re frigerant system must be evacuated dehydrated and leak tested by methods described in Carrier Standard Service Techniques Manual Chapter 1 Sections 1 6 and 1 7 Use sight glass meth od to charge system See Section 1 8 of manual for details CHARGE THE SYSTEM Charge to a clear sight glass while holding satu
5. The Motor End Cover Crankcase 1 2 Suction Service Valve 5 8 Crankshaft Spinner Tube No 10 Oil Pump Drive Segment 11 2 Level Sight Glass LEGEND NEF National Extra Fine Drain oil if USAGE 1 4 5he 18 3 3 16 12 Testing Oil Pump Observe oil level sight glass The oil pressure relief valve line is positioned to discharge oil against sight glass When oil does not discharge from this line it is an indication of low oil pump pressure If oil pump pressure is low remove and check oil filter screen oil pressure regulator and oil return check valve OIL PRESSURE RELIEF VALVE Fig 11 Unscrew re lief valve assembly from motor partition plate and be sure assembly is not clogged or the plunger is not stuck OIL RETURN CHECK VALVE Fig 11 Unscrew check valve from motor partition plate Be sure flutter valve is not sticking and that it seats tightly OIL FILTER SCREEN Fig 12 Screen is accessible through bottom cover plate Remove and inspect strainer for holes and dirt Clean it with solvent and replace OIL PUMP AND BEARING HEAD Fig 12 The oil pump assembly is contained in the pump end bearing head aluminum casting The pump end main bearing is a machined part of this casting An insert bearing is not required Remove Bearing Head Assembly from Crankcase Remove in sequence refer to Fig 12 and 13 oil pump cover oil feed guide retaining spring oil feed guide pump dri
6. from Carrier Sales Representative m u EQUIP GND x c I mm i ma mm 2 man A E CSEE NOTES 1 amp 2 2 5 gt E HT T ea Be as ou BLK TB2 Aw aS cp s OL2 CR TBa es S BLK BLU H 8LU T B8 _ oes RED t 4 0R c BLK CR L sw BLK m TBe TBe BLK T ne TB2 D Nr M FIELD g ar THERMOSTAT 25 TB2 s A Ure BLK REMOVE JUMPER TB2 7 LEGEND AUX Auxiliary TB Terminal Block C Compressor Contactor TM Timer Motor CH Crankcase Heater TR Timer Relay CR Control Relay DX Direct Expansion L Terminal Block Connector EQUIP Equipment FU Fuse ked Terminal GND Ground Unmarked Termina HPS High Pressure Switch IP Internal Protector Marked Terminal LLS Liquid Line Solenoid Valve Ti LPS Low Pressure Switch Factory Wiring M3 Cooling Tower Fan m NEC National Electrical Code Field Control Wiring OL Overload To indicate common potential only OPS Oil Pressure Switch ME ot to represent wiring POR Pumpout Relay O i SW Start Stop Reset Switch Splice NOTES with a maximum rating of 15 A to TB2 connections 1 Factory wiring is in compliance with NEC Any field modifications Hot Side and Neutral or additions must be in compliance with al
7. heads removed inspect tubes for refrigerant leaks Refer to Carrier Refrigerant Service Techniques Manual Clean condenser tubes with nylon brush available from Carrier Service Department Flush water through tubes while cleaning If hard scale has formed clean tubes chemically Do not use brushes that will scrape or scratch tubes Because the condenser water circuit is usually an open system the condenser tubes may be subject to contamination by foreign matter Local water conditions may cause excessive fouling or pitting of tubes Condenser tubes therefore should be cleaned at least once a year or more often if the water is contaminated Proper water treatment can minimize tube fouling and pitting If such conditions are anticipated water treatment analysis is recommended Refer to the Carrier System Design Manual Part 5 for general water conditioning information If hard scale has formed clean the tubes chemically Con sult an experienced and reliable water treatment firm in your area for treatment recommendations Clean the condenser by gravity or by forced circulation as shown in Fig 9 and 10 IMPORTANT If the ambient temperature is below 32 F during a shutdown period protect the condenser from freezing by draining the water from the system or by add ing antifreeze to the water PRESSURE DIFFERENTIAL UNLOADER UNLOADER ADJUSTMENT SCREW PISTON HEAD ASSEMBLY UNLOADER VALVE BODY CAPACITY CONTROL VALVE
8. in this position set point is 86 psig Control set point is then regulated to desired pressure by turning adjustment nut coun terclockwise Every full turn decreases set point by 7 2 psi Approximately 12 turns in counterclockwise direction will de crease control set point to 0 psig Table 4 shows steps of control for the compressor and condensing unit Pressure Differential Adjustment Turn differ ential adjusting screw counterclockwise to its back stop posi tion differential in this position is 7 psi Pressure differential is set by turning adjustment screw clockwise Every full turn increases differential by 1 2 psi Approximately 10 turns in clockwise direction will increase pressure differential to 19 psi 802 CONTROL SET POINT ADJUSTMENT NUT POWER HEAD PRESSURE DIFFERENTIAL ADJUSTMENT SCREW VALVE BODY BYPASS PISTON RING BYPASS PISTON USED WITH HOT GAS BYPASS TYPE OF UNLOADING ONLY NOT REQUIRED WITH SUCTION CUTOFF TYPE UNLOADING DIFFERENTIAL SCREW SEALING CAP CAP MUST BE REPLACED TO PREVENT REFRIGERANT LEAKAGE Fig 7 Capacity Control Valve Pressure Type Table 4 Capacity Control Reduction Steps Full Load Capacity UNIT 06D 07D ALL 4 CYLINDER MODELS ALL 6 CYLINDER MODELS Capacity Control Pressure Fig 8 LOADED OPERATION Pressure operated control valve is controlled by suction pressure and actuated by discharge pressure Each valve controls 2 cylinders o
9. microns b Break vacuum with system refrigerant Pressurize to 15 psig Wait 20 minutes to remove moisture c Re evacuate to 5000 microns d Repeat Step b e Evacuate to 1000 microns or below if possible 5 Place compressor in operation After 2 to 4 hours of operation check compressor oil for signs of discoloration and or acidity If oil shows signs of contamination replace oil charge filter driers and clean suction strainer with solvent Repeat this procedure until oil stays clean and acid free for 48 hours of operation TROUBLESHOOTING A WARNING Read Safety Considerations on page 1 before proceeding with troubleshooting PROBLEM CAUSE Compressor does not run Main power line open Safety thermostat tripped Condenser water pump not running power off Pump binding Incorrect wiring Motor burned out Control stuck open Loose terminal connection Improperly wired controls Low line voltage Compressor motor defective Seized compressor Compressor cycles on low pressure Low pressure control erratic in action control Suction shutoff valve partially closed Low refrigerant charge Plugged suction strainer Defective TXV Compressor cycles on high pressure High pressure control erratic in action control Discharge valve partially closed Air in system Condenser scaled or airflow restricted Receiver not properly vented refrigerant backs up into evap condenser Condenser water p
10. posi tioning springs from dowel pins Inspect valves and valve seats for wear and damage See Table 6 Check cylinder deck valve stops for uneven wear Replace valves if cracked or worn If valve seats are worn replace complete valve plate assembly If cylinder deck valve stops are worn replace compressor REASSEMBLY Do not interchange valves Install suction valve positioning springs on dowel pins Assemble positioning springs with spring ends bearing against cylinder deck Fig 17 Springs bow upward Place suction valves on dowel pins over positioning springs Place valve plate on cylinder deck and reinstall discharge valve plate assembly Retorque discharge valve stop cap screws to 16 lb ft Replace cylinder head Be sure cylinder head gasket is lined up correctly with cylinder head and valve plate CYLINDER HEAD DISCHARGE VALVE PLATE GASKET VALVE STOP GASKET 0 0 DISCHARGE VALVE SCREWAND LOCK WASHER DISCHARGE VALVE VALVE PLATE VALVE PLATE ASSEMBLY Fig 16 Valve Plate Assembly DISCHARGE PORT HIGH PRESSURE CONNECTION VALVE PLATE DOWEL PIN LOW PRESSURE CONNECTION SUCTION VALVE POSITIONING SUCTION SPRING VALVE ab RE Fig 17 Suction Valve and Positioning Springs in Place Table 6 Compressor Wear Limits Factory Tolerances in COMPRESSOR PART COMPRESSOR MODEL MAX ALLOW oepM808 06DM313 06DA818 O6DA825 06DA328 06DA537 WEAR MOTOR
11. voltage 100 x average voltage Example Supply voltage is 230 3 60 A B C AB 236 volts BC 229 volts AC 234 volts Determine maximum deviation from average voltage AB 236 233 3 volts BC 233 229 4 volts AC 234 233 1 volt Maximum deviation is 4 volts Determine voltage imbalance Voltage Imbalance 100 x gt 17 This amount of phase imbalance is satisfactory as it is below the maximum allowable of 2 IMPORTANT If the supply voltage phase imbalance is more than 2 contact your local electric utility company immediately ELECTRICAL DATA NOTES 1 All 06D and 07D units are across the line start 2 Wire sizes are based on TW type copper wire Maximum wire lengths based on data from Table 1 will result in a 1 voltage drop to compressor Where up to 3 voltage drop is allowed the run length can be increased to 3 times the length calculated from data in Table 1 3 The 06D compressor unit electrical data shown in Table 1 does not apply for 06D compressors used as an integral part of other Carrier equipment See proper installation book for electrical information WIRING Power supply must correspond with unit name plate electrical characteristics units are internally wired at factory for nameplate voltage Field wiring must comply with local and national codes Install a branch circuit fused disconnect of adequate size to handle starting current LINE POWER Conne
12. 06D 07D Compressors and Condensing Units Installation Start Up and Service Instructions Hermetic Water Cooled CONTENTS Page SAFETY CONSIDERATIONS 1 BEFORE INSTALLATION 1 Check Shipment 1 Unit Location Considerations 1 INSTALLATION 1 8 Mount Unit 1 Piping Connections 1 Electrical Connections 4 Limitations 6 Refrigerant Charging 8 INITIAL START UP 8 To Start 8 CHECKING OPERATION 8 9 Oil Charge 8 High Pressure Switch 8 Low Pressure Switch 8 Oil Pressure Switch 8 Time Guard Control 8 CAPACITY CONTROL 9 10 Control Set Point 9 To Regulate Control Set Point 9 Pressure Differential Adjustment 9 Capacity Control Pressure 10 CONDENSER MAINTENANCE 10 11 SERVICE ipe EP TES 12 17 Service
13. 4 Valve Plate Gasket 20 Bottom Plate 37 Eccentric Strap Side Shield 5 Valve Plate Assembly 21 Bottom Plate Washer and Cap Screw 38 Pump End Counterweight 6 Cylinder Head Gasket 22 Oil Filter Screen 39 Oil Pump Drive Segment 7 Cylinder Head 23 Oil Return Check Valve 40 Drive Segment Cap Screws 8 Cylinder Head Washer 24 Oil Level Sight Glass and Lockwashers and Cap Screw 25 Motor Terminal Plate 41 Oil Feed Guide 9 Suction Manifold Connection 26 Dowel Pins For Suction Valve 42 Oil Feed Guide Retainer Spring 10 Suction Valve Positioning Spring Positioning 43 Cover Gasket 11 Suction Strainer 27 Equalizing Tube and Lock Screw Assembly 44 Pump Cover Cap Screw and Washer 12 Bearing Head Gasket 28 Lockwasher 45 Counterweight Bolt 13 Oil Pump Inlet Passage 29 Rotor Lockwasher 46 Eccentric Strap Side Shield 14 Bearing Head Washer 30 Rotor Drive Key 47 Motor End Counterweight and Cap Screw 31 Piston Pin Lock Ring 48 Locknut 15 Oil Pump Cover 32 Piston Pin 49 Eccentric Shaft or Crankshaft 16 Pump End Bearing Head 33 Piston Used to add compressor oil Three Allen head cap screws hold capacity control valve in place Fig 14 Remove screws using a cut down 2 16 Allen wrench and pull valve from cylinder head Remove same number of piston plugs from replacement compressor as number of unloaders su
14. END Main Bearing Diameter Max 1 3755 1 6240 0 002 Journal Diameter Min 1 3735 1 6233 0 002 PUMP END Main Bearing Diameter Max 1 3745 0 002 Journal Diameter Min 1 3735 0 002 CRANKPIN DIAMETER Min 2 2030 1 3735 2 2030 1 3735 0 0025 THROW Max 1 2500 1 0000 1 4374 1 2500 1 9396 Min 1 2460 1 4344 1 246 THRUSTWASHER Max 0 1570 0 025 Min 0 1550 0 025 ECCENTRIC DIAMETER Max 2 2035 2235 0 002 CONN ROD DIAMETER Max 1355 1 3755 0 002 PISTON PIN BEARING Min 0 6878 0 001 CYLINDERS Bore Max 2 0005 0 002 Piston Diameter Min 1 996 0 002 Piston Pin Diameter Min 0 6873 0 001 Piston Pin Bearing Press Fit Piston Ring Gap Max 0 0130 0 025 Min 0 0050 0 025 Piston Ring Side Clearance Max 0 0020 0 002 Min 0 0010 0 002 Maximum allowable wear above maximum or below minimum factory tolerances shown For example difference between pump end main bearing diameter and journal diameter is 001 in 1 3745 1 3735 per factory tolerances Maximum allowable difference is 004 in 002 002 tTolerance for the 06DA825 same as 06DA824 Cleaning Suction Strainer 1 Pump down compressor 2 Remove motor end cover and screws holding disc type strainer Fig 18 to cover 3 Clean strainer with solvent or replace if broken or corroded 4 Replace strainer and motor end cover Purge or evacuate compressor before starting Motor Replacement Stator and rotor are not field replaceable Stat
15. cloth to TXV Install drier Clean strainer or replace TXV Copyright 2002 Carrier Corporation Manufacturer reserves the right to discontinue or change at any time specifications or designs without notice and without incurring obligations Book 2 2 4 4 PC 802 Catalog No 530 608 Printed in U S A Form 06 07D 3SI Pg 20 802 7 02 Replaces 06 07D 2SI Tab 10 2 26
16. ct line power to the compressor con Average Voltage 236 229 234 _ 233 volts tactor For example connect L1 to terminal 11 L2 to termi 3 nal 12 and L3 to terminal 13 See Fig 3 Table 1 Compressor Electrical Data COMPRESSOR MOTOR WINDING 06D Ohms 575 e 5 0 208 230 0 78 460 35 5 3 1 575 i05 3 3 208 230 5 27 0 5 460 13 5 2 1 575 17 6 2 6 208 230 6 5 44 0 42 460 22 1 7 575 22 2 79 2 0 208 230 7 5 55 5 0 31 A 460 27 8 1 3 575 1 7 208 230 10 0 26 460 1 0 575 1 2 208 230 15 0 18 460 0 72 LEGEND 3 For wiring sizing the RLA value can be determined by MCC LRA Locked Rotor Amps 1 56 RLA MCC Maximum Continuous Current 4 Compressor operating amps at any specific conditions can only RLA Rated Load Amps be determined from a performance curve 5 RLA values for 06D compressor protected by a calibrated Refer to physical data table to match compressor with correct com circuit breaker will depend on must trip value of circuit breaker pressor unit or water cooled condensing unit 6 Ohm values shown for resistance are approximate and shown NOTES 1 RLA rated load amps value shown is MCC 1 40 RLA 2 For minimum contactor sizing use RLA value determined by MCC 1 40 RLA for reference only Motors from different vendors and motors of different efficiencies can differ up to 15 from data shown 7 Electrical data for compressor part numbers O6DR and 50 Hz models not shown are available
17. d counterweight on shaft before inserting shaft into compressor See Piston Assembly Replacement PISTON ASSEMBLY Attach connecting rods or eccentric straps to pistons with piston pins and lock in place with piston pin lock rings Place lock rings with gap on the side They should be tight enough so they cannot be rotated by finger pressure RINGS 1 Check ring gap by inserting each ring separately in cylinder approximately 3 8 in from top Ring gap should be between 013 and 005 inch 2 Install compression rings in top piston grooves with side marked Top toward piston head Install oil ring below compression ring with notched end on bottom Stagger ring gaps around piston 3 Measure side clearance between ring and piston Table 6 Check for free action PISTON ASSEMBLY REPLACEMENT Compressors Using Crankshafts Install connecting rod and piston assemblies into cylinders Place chamfered sides of connecting rods against radius of crankpins Install connecting rod caps to matching connecting rods through bottom of crank case Be sure chamfered sides of caps are against radius of crankpins Caps are locked in place with cap screws Use 8 to 10 Ib ft to tighten cap screws Compressors Using Eccentric Shafts Install eccentric strap and piston assemblies into cylinders Install eccentric shaft through pump end carefully guiding it through eccentric straps and main bearings Install pump end counter weight to ecce
18. e barrier This condition is acceptable Compressor Running Gear Removal 1 Remove pump end bearing head 2 Remove motor end cover carefully to prevent damage to stator Support cover and lift off horizontally until it clears windings 3 Remove bottom cover plate 4 Remove equalizer tube assembly from motor end of crankshaft or eccentric shaft If shaft turns preventing tube assembly from being loosened block shaft with a piece of wood 5 Remove rotor using a jackbolt Insert a brass plug into rotor hole to protect end of crankshaft from jackbolt Support rotor while it is being removed to prevent stator damage 6 Remove connection rod caps from compressors using connecting rods and crankshafts Label caps and rods so they may be reinstalled in same plate on crankshaft STRAINER SCREWS amp WASHERS SUCTION STRAINER MOTOR END COVER VALVE GASKET VALVE CAP Fig 18 Motor End Cover Assembly BARRIER POSITIONING KEY THIS SIDE IS ADJACENT TO THE CYLINDER HEAD PHASE BARRIER NO TERMINAL IN THIS SECTION TERMINAL NUMBERS ON THIS SURFACE TERMINAL NUT TYP BLACK JAM NUTS ON TERMINALS 8 amp 9 BRASS JAM NUTS ON TERMINALS 1 2 AND 3 CENTRAL SCREW THREADS INTO TERMINAL PLATE ACROSS THE LINE APPLICATION 5 TERMINALS Fig 19 Terminal Plate Assembly SPACER TYP LOCK WASHER TYP 7 Remove bolts holding counterweights and eccentric strap side shields to eccentr
19. e correct voltage must be field supplied thru a fused disconnect device with a max rating of 15 A to TB2 connections Hot Side and Neutral Open control circuit disconnect switch for servicing only Disconnect must remain closed for crankcase heater to operate A transformer of the following rating may be field supplied for 60 Hz units 350 va Transformer must be fused and grounded per applicable codes If any of the original wiring furnished must be replaced it must be replaced with 90 C wire or its equivalent CONTROL WIRING Control circuit power is 115 volts energized from an external source or from unit voltage through field supplied transformer Transformer size required is 350 va for 60 Hz units External control power source must be supplied through a 15 amp fused disconnect Connect control circuit power leads to terminal block TB2 terminals L1 and L2 Terminal L2 is neutral potential ground Compressor Protection The 06D and 07D units are factory wired for single pumpout control Field addition and wiring of line voltage remote control and liquid line solenoid valve is required See unit Fig 3 and Fig 6 Remote control minimum contact rating must be 25 va Solenoid valve must have a maximum load rating of 50 va holding 200 va inrush For applications with cooling tower air cooled or evaporative condensers add necessary auxiliary contacts in line between compressor contactor and terminal A1 on ti
20. ed with correct set ting For sealing purposes install a plug piston assembly into each cylinder head of original compressor from which a con trol valve was removed 14 Fig 14 Removal of Capacity Control Valve BYPASS PISTON PLUG SPRING CAP SCREWS NONINTERCHANGERABLE WITH CONTROL VALVE CAP SCREWS GAS PORT Fig 15 Removal of Bypass Piston Plug Suction and Discharge Valve Plate Assembly Fig 16 Test for leaking discharge valves by pumping compressor down and observing suction and discharge pressure equalization If a discharge valve is leaking the pressures will equalize rapidly Maximum allowable discharge pressure drop is 3 psi per minute after an initial drop of 10 to 15 psi in the first half minute If there is an indicated loss of capacity and discharge valves check properly remove suction and discharge valve plate assembly and inspect suction valves IMPORTANT This test procedure is not applicable to compressors equipped with pressure actuated or solenoid unloader valves due to rapid pressure equalization rate Check suction and discharge valves by disassembling valve plate see Fig 16 DISASSEMBLY Remove cylinder head 1 Remove discharge valve assembly cap screws valve stops valve stop supports and valves 2 Pry up on side of valve plate between valve plate and cylinder deck to remove valve plate and expose suction valves Remove suction valves and suction valve
21. efrigerants For other refrigerants contact Carrier Factory Sales Representative IMPORTANT Do not reuse drained oil and do not use oil that has been exposed to atmosphere High Pressure Switch Check by throttling condens er water or blocking airflow on air cooled units allowing head pressure to rise gradually Check discharge pressure constantly throughout procedure Compressor should shut off within 10 psi of values shown in Table 3 Low Pressure Switch Check by slowly closing suc tion shutoff valve or by completely closing liquid line shutoff valve A decrease of suction pressure will follow Compressor should shut off within 4 psi of values shown in Table 3 Oil Pressure Switch OPS The oil pressure switch protects against damage from loss of oil or loss of oil pressure during unit start up If the oil pressure differential sensed by the OPS is 6 psig or less on unit start up the switch remains closed and the OPS heater is energized The switch time delay is approximately 45 seconds If after 45 seconds the oil pressure differential sensed by the OPS is less than 11 psig the heater remains energized The OPS tem perature actuated switch then opens and the compressor is deenergized If the differential reaches 11 psig the OPS opens and deenergizes the heater and the system operates normally IMPORTANT If the oil pressure switch causes unit lock out determine and correct the cause of the lockout such as loss o
22. f compressor oil or flooded compressor before restarting the unit Failure to correct the cause of OPS lock out may constitute abuse Equipment failure due to abuse is not covered by warranty To restart the unit push the OPS reset button and then push the control circuit switch on the unit control box to OFF and then to ON Time Guard Control Control provides a delay of approximately 5 minutes before restarting compressor after shutdown for any reason On starting the Time Guard control timer causes a delay of 15 seconds after thermostat closes before compressor will start Table 2A 06D Physical Data UNIT 06D OPERATING WEIGHT Ib REFRIGERANT COMPRESSOR 06D M808 M313 Cylinders 2 4 Bore in 2 2 Stroke in 114 1 Displacement cfm at 1750 rpm 8 13 Maximum Rpm Oil Charge pt 3 4 5 High Side Maximum Pressure Low Side Maximum Pressure CONNECTIONS in Suction Valve ODF Discharge Valve ODF Compressors listed are for R 22 applications For R 134a and R 507 404A an 06DR compressor is standard Factory compressor substitutes may be made Contact Carrier Sales Representative A8081 H3131 A8181 E8251 3281 330 E5371 R 134a R 22 R 507 404A A818 A825 A328 A537 4 6 6 6 2 2 2 2 17 16 11 4 115 32 115 16 18 3 23 9 28 37 1 1750 5 5 8 8 8 450 PSIG 245 PSIG 7 8 UP 11 8 13 8 13 8 13 8 5 5 g 7g 7 8 7 8 11 NOTE The 06DE8251 compressor unit with the 06DA825 c
23. ic shaft Remove eccentric strap side shields Remove pump end counterweight through pump end bearing head opening Motor end counter weight will remain on eccentric shaft until shaft is removed 8 Pull eccentric shaft or crankshaft out through pump end opening Guide eccentric straps from eccentric shaft during removal process Rotate shaft and tap it lightly to prevent straps from jamming 9 Remove eccentric straps or connecting rods and pistons through bottom cover plate opening 10 Disassemble connecting rods or eccentric straps from pistons by removing lock ring s and piston pins Remove oil and compression rings from piston Keep each piston assembly together for proper reassembly Check all parts for wear and tolerances shown in Table 6 Check crankshaft eccentric shaft oil passages and clean if clogged 16 PUMP END MAIN BEARING This bearing is a ma chined part of the new aluminum oil pump and bearing head casting Disassemble bearing head If bearing is scored or worn replace complete bearing head CRANKCASE AND MOTOR END MAIN BEAR INGS These bearings are not field replaceable If bearings are worn or damaged replace compressor Compressor Running Gear Replacement CRANKSHAFT Install crankshaft through pump end carefully guiding it through main bearings Replace rotor Attach equalizer tube assembly to motor end of shaft Eccentric shafts must be installed after piston assemblies Place motor en
24. l applicable codes Use 6 Open control circuit disconnect switch for servicing only Discon copper copper clad aluminum for field power supply only nect must remain closed for crankcase heater to operate 2 Field power supply wiring must be 75 C minimum 7 A transformer of the following rating may be field supplied for 3 Compressor thermally protected Three phase motors are pro 60 Hz units 350 va tected against primary single phasing condition 8 Transformer must be fused and grounded per applicable codes 4 Pilot duty control must be field supplied Minimum contact rating 9 If any of the original wiring furnished must be replaced it must must be 25 va be replaced with 90 C wire or its equivalent 5 60 Hz units have 120 volt control circuit 50 Hz units have 230 volt control circuit A separate source of supply at the correct voltage must be field supplied through a fused disconnect device Fig 3 Unit Label Diagram 06D 07D Units Compressor Unit Connections Extend power leads from control center contactor terminals to compressor terminal box and make connections as shown in Fig 4 Terminals 8 and 9 on motor terminal plate are for internal protector connections As shown in Fig 4 run a wire from ter minal 9 to terminal 6 on TB2 in control center and a wire from terminal 1 on OL2 to terminal 2 on HPS in control center Run crankcase heater power wiring into control center Connect leads to terminal 5 on pum
25. mer Insert desired interlocks and overloads between terminals 5 and 9 on terminal block TB2 Control wiring may be modified as shown in Fig 6 for automatic pumpdown control remove low pressure switch between timer relay and terminal 4 on TB2 Wire low pressure switch between terminals 9 and 6 on TB2 Add necessary auxiliary contacts between compressor contactor and terminal A on timer Remove wire between terminal 6 on TB2 and terminal 3 on pumpout relay Insert required interlocks and overloads between terminals 5 and 9 on TB2 Limitations Do not use automatic pumpdown control on direct expansion cooler applications or when compressors are equipped with pressure type unloader valves Pressure unloader valves have built in high to low passage which allows compressor to cycle with automatic pumpdown vox BERE TIMER SEQUENCE CHART BLACK DENOTES CLOSED CONTACTS Fig 5 06D 07D Control Box Components and Connections 3 Phase SINGLE TB2 I TB2 M3 l e dp C3 4 AUX CONTACTS THERMO 182 Eig aa CITY WATER PUMPOUT CONTROL TB2 TB2 2 TB2 M3 sw e qb 13 MS wa AUTOMATIC PUMPDOWN CONTROL SEE PAGE 6 FOR LIMITATIONS MOVE WIRE CONNECTION FROM POR 3 TB2 TB2 iPs Jus MOVE WIRE CONNECTION TB2 203 ie TB2 M3 TB2 FROM POR 8 3 TB2 M3 D AUX LPS TB2 s dp RELOCATE TB2 CONTACTS Sw ror AUX LPS 4 3 un
26. n power on until work is completed BEFORE INSTALLATION Check Shipment File claim with shipping company if shipment is damaged or incomplete Unit Location Considerations Locate unit on floor in a well ventilated area Position unit to allow sufficient space for refrigerant and water connections and to service compressor Place unit so suction and discharge valves can be easily reached and oil level checked Do not install condensing unit where temperature will fall below freezing Local water can cause excessive fouling or sealing of condenser tubes If such conditions are anticipated a water treatment analysis is recommended Refer to Carrier System Design Manual Part 5 for general water conditioning information Make provision in piping layout to drain and vent condenser if system is to be shut down in winter INSTALLATION Mount Unit Level unit and bolt firmly to foundation Loosen compressor mounting bolts and remove shipping blocks from under compressor Tighten all 4 bolts on compres sor Next loosen each bolt until the flanged washer can be moved sideways with finger pressure NOTE Be sure that compressor floats freely on mounting springs Piping Connections Attach water supply and return lines to connections indicated on condenser unit Fig 1 Water leaving condenser should not be connected directly into sewer lines Check local codes Attach refrigerant liquid and suction lines to condensing
27. ne bank On start up controlled cylinders do not load up until differential between suction and discharge pressures is approximately 25 psi When suction pressure rises high enough to overcome control set point spring the diaphragm snaps to the left and relieves pressure against the poppet valve The drive spring moves the poppet valve to left and it seats in the closed position With poppet valve closed discharge gas is directed into the unloader piston chamber and pressure builds up against the piston When pressure against unloader piston is high enough to overcome the unloader valve spring piston moves valve to the right opening suction port Suction gas can now be drawn into the cylinders and the bank is running fully loaded UNLOADED OPERATION As suction pressure drops below set point control spring expands snapping diaphragm to right This forces poppet valve open and allows gas from discharge manifold to vent through base of control valve to suction side Loss of full discharge pressure against unloaded piston allows unloader valve spring to move valve left to closed position The suction port is blocked isolating the cylinder bank from the suction manifold The cylinder bank is now unloaded CONDENSER MAINTENANCE To inspect and clean condenser drain water and remove condenser heads To drain condenser shut off water supply and disconnect inlet and outlet piping Remove drain plugs and vent plug With condenser
28. ntric shaft and replace eccentric strap side shields Turn crankshaft or eccentric shaft to be sure there is no binding between bearing surfaces and journals Replace oil screen bottom cover plate valve plates and cylinder heads 17 COMPRESSOR MOTOR BURNOUT A DANGER Do not attempt start up with terminal cover removed Bodily injury or death may result from explosion and or fire if power is supplied to compressor with the terminal cover removed or unsecured See warning label on termi nal cover Clean Up Procedure If a hermetic motor burns out the stator winding decomposes forming carbon water and acid which contaminate refrigerant systems Remove these contam inants from system to prevent repeat motor failures 1 Close compressor suction and discharge service valves and bleed refrigerant from compressor Save remaining refrigerant in system 2 Check control box for welded contactor contacts welded overload contacts or burned out heater elements Check terminal plate for burned or damaged terminals insula tion and shorted or grounded terminals Repair or replace where necessary 3 Remove suction and discharge shutoff valve bolts and all other connections to damaged compressor Remove damaged compressor and replace with new compressor Replace liquid line filter drier with a drier of one size larger 4 Purge new compressor Triple evacuate using the follow ing procedure a Evacuate to 5000
29. ompressor replaces the 06DE8241 once inventory of the 06DA824 compressor is depleted Table 2B 07D Physical Data UNIT 07D OPERATING WEIGHT Ib REFRIGERANT COMPRESSOR 06D M808 Cylinders 2 Bore in 2 Stroke in 11 4 Displacement cfm at 1750 rpm 8 Maximum Rpm Oil Charge pt 3 High Side Maximum Pressure Low Side Maximum Pressure CONDENSER Shell and Tube t Part Number Refrigerant Storage Capacity Ib Min Refrigerant Operating A203 A208 B20 EB 42 620 P701 0605CX P701 0607CX P701 0610CX P701 0615CX P701 0620CX 17 20 15 90 24 40 31 60 27 40 22 17 00 15 70 24 10 31 20 27 10 39 30 2 80 3 10 4 90 7 40 8 30 9 00 215 R 134a R 22 R 507 404A A818 A825 A328 A537 4 6 6 6 2 2 2 2 17 16 11 4 115 39 115 16 18 3 23 9 28 37 1 1750 5 5 8 8 8 450 PSIG 245 PSIG P701 0625AX 39 80 9 18 34 10 Charqe Ib R 507 404A 14 70 13 60 20 90 27 10 23 50 ge do 507 40 2 80 3 10 4 90 7 40 8 30 9 00 REFRIGERANT CONNECTION in ODF Inlet 15 8 15 8 15 8 15 8 15 8 15 8 Outlet 11 8 11 8 118 11 8 11 8 11 WATER CONNECTION Inlet Outlet 1 1 11 4 11 4 11 4 2 LEGEND TThe condenser listed is for R 22 air conditioning duty and may change FPT Female Pipe Thread based on the application Maximum condenser operating pressure ODF Compressor listed is the standard compressor for R 22 air conditioning duty An O6DR compressor is standard equipment for low tem
30. or is a press fit into motor housing If compres sor motor is damaged replace compressor Terminal Plate Assembly The terminal plate assem bly is shown in Fig 19 Do not disassemble for any reason ex cept to replace the phase barrier which may become damaged If refrigerant leakage or a ground short occurs the entire ter minal plate assembly must be replaced If it becomes necessary to remove the phase barrier proceed as follows 1 Loosen and remove all terminal nuts 2 Remove lock washers and wire terminals 3 Loosen and disengage the center screw Do not try to remove the screw 4 Lift the phase barrier off the terminal screws the spacers and the center screw are removed with the phase barrier IMPORTANT Do not disturb the jam nuts on which the phase barrier rests Procedure for reassembling the phase barrier 1 Place phase barrier over the terminal screws Be sure po sitioning key is in the recess in the terminal plate before proceeding further 2 Place the spacers and wire terminals on the terminal Screws 3 Place the lock washers and terminal nuts over the wire terminals and tighten to specified torque 18 to 30 Ib in 4 Install the center screw through the phase barrier and tighten to the specified torque 15 to 25 Ib in NOTE The design allows for clearance between the center screw head and the phase barrier Thus the torque limit may be reached before the screw head contacts the phas
31. perature R 507 404A or medium temperature R 134a applications Factory substitutions may be made Contact Carrier Sales Representative Outside Diameter Female Table 3 Factory Switch Settings PRESSURE CHANGE AFFECTING SWITCH POSITION Open SWITCH TYPE High Pressure 210 10 psig 290 10 psig Low Pressure 70 4 psig 60 4 psig Oil Pressure 6 psid 11 psid LEGEND psid pounds per square inch differential psig pounds per square inch gage NOTES 1 Values for the high and low pressure switches based on R 22 For other refrigerants reset to pressure corresponding to satura tion temperatures indicated by the listed pressures 2 Values for oil pressure are above operating suction pressure pressure differential between suction and discharge pressures of oil pump 350 psi refrigerant side 300 psi water side CX models 350 psi refrigerant side 150 psi water side AX models NOTE The 07DB210 with the 06DA825 compressor replaces the 07DB210 with the 06DA824 once the compressor inventory is depleted CAPACITY CONTROL Suction Cutoff Type Control Set Point Cylinder Load Point Set point is adjustable from O to 86 psig Pressure differential between cylinder load up point and cylinder unload point is adjustable from 7 to 19 psi To Regulate Control Set Point Refer to Fig 7 Turn adjustment nut clockwise to its bottom stop with nut
32. pout relay and terminal 3 on terminal block TB2 See Fig 5 Affix power warning label supplied in the installer s packet to fused disconnect which energizes crankcase heater see unit label diagram MOTOR TERMINAL PLATE BLK FROM YEL COMPRESSOR CONTACTOR BLU COMPRESSOR RED HPS TB2 TERMINAL BOX ID LEGEND HPS High Pressure Switch OL Overload Relay TB Terminal Block Factory Wiring Fig 4 Compressor Terminal Diagram LEGEND C Contactor Compressor NEC National Electrical Code CH Crankcase Heater OL Overload Relay CR Control Relay OPS Oil Pressure Switch FU Fuse POR Pumpout Relay GND Ground Connection SW Switch HPS High Pressure Switch TB Terminal Block IP Internal Protector TM Timer Motor LPS Low Pressure Switch TR Timer Relay NOTES 1 a Wh oo N o Factory wiring is in compliance with NEC Any field modifications or additions must be in compliance with all applicable codes Use copper copper clad aluminum for field power supply only Field power supply wiring must be 75 C minimum Compressor thermally protected Three phase motors are protected against primary single phasing condition Pilot duty control must be field supplied Minimum contact rating must be 25 va 60 Hz units have 120 volt control circuit 50 Hz units have 230 volt con trol circuit A separate source of supply at th
33. pplied with original compressors Three Allen head cap screws hold piston plug 2 assembly in place Remove flange cover gasket spring and bypass piston plug Fig 15 A tapped hole is provided in piston to allow it to be pulled out Hole has same thread diameter as cap screws removed above 3 4 5 8 CAPACITY 6 CONTROL 7 Cmm LEGEND 1 Suction Strainer 5 Oil Pump Rotor CAP SCREWS Assembly 6 Drive Segment Cap NONINTERCHANGEABLE 2 Oil Pump Bearing Head Screws WITH FLANGE COVER Assembly 7 Bearing Head Cap CAP SCREWS 3 Rotor Retaining Ring Screws 4 Oil Pump Drive Segment 8 Oil Pump Inlet Passage Fig 13 Removing Pump End Bearing Head Cylinder Heads Disassemble cylinder heads by re moving cap screws and prying up on side between cylinder head and valve plate to break heads loose from valve plate Do not strike cylinder heads to break loose Check heads for warping cracks and damage to gasket surfaces When replacing cylinder head torque cap screws 30 to 35 Ib ft to prevent high to low side leak in center portion of cylinder head gasket Service Replacement Compressors Replace ment compressors are not equipped with control valves One or both side bank cylinder head s is plugged with a spring loaded plug piston assembly Compressor will run fully loaded with piston plug s in place Transfer original capacity control valve s to replacement compressor ensures proper valves are us
34. rated condensing pressure constant at 125 F air cooled systems or 105 F water cooled systems Add additional refrigerant to fill condenser subcooler coils where applicable for air cooled applications 06D Compressor Units See condenser data for additional charge required to fill subcooler after clear sight glass is obtained INITIAL START UP A DANGER Do not attempt start up with terminal cover removed Bodily injury or death may result from explosion and or fire if power is supplied to compressor with the terminal cover removed or unsecured See warning label on termi nal cover Crankcase heater should be energized a minimum of 24 hours before starting unit Do not permit crankcase heaters to be deenergized during normal shutdown periods Check to see that oil level is 3 to 2 3 up on compressor sight glass Open water supply valve and allow water to reach condens er Open pressure line valve of water regulating valve if used Turn condenser fan on when the compressor unit is applied with air cooled condenser Backseat open the compressor suction and discharge shut off valves open liquid line valve at receiver Start evaporator fan or chilled water pump To Start Compressor Close main power switch control power switch and unit ON OFF switch Time Guard control circuit causes a short delay before compressor starts Recheck oil level and check oil pressure See Oil Charge for details With
35. rier 06D Specified Parts list for compressor part interchangeability 3 Before compressor is opened the refrigerant must be removed from it by the Pumpdown method a Start compressor close suction shutoff valve and reduce crankcase pressure to 2 psig bypass low pressurestat with jumper b Stop compressor and isolate from system by closing discharge shutoff valve c Bleed any residual refrigerant necessary 4 After disassembly clean all parts with solvent Use mineral spirits white gasoline or naphtha 5 Before assembly coat all parts with compressor oil and clean and inspect all gasket surfaces Replace all gaskets with new standard specified gaskets coated with compressor oil See Table 5 for typical torque values 6 After reassembly evacuate compressor and open suction and discharge valves Restart compressor and adjust refrigerant charge Table 5 Torque Values SIZE TORQUE DIAM TOES RANGE in lb ft the 27 pipe Pipe Plug Crankshaft Oil Return Check Valve 20 pipe Crankcase 20 pipe 20 25 Pipe Plug Press Gage Conn 10 12 Connecting Rod Capscrew Baffle Plate Crankcase Side Shield Oil Pump Drive Segment Unloader Valve Cover Plate Pump End Bearing Head Terminal Block Cap Screws Suction Service Valve Discharge Service Valve Pump End Bearing Head Bottom Plate Crankcase Compressor Foot Cylinder Head Motor End Cover Crankcase
36. rigerant charging allow a minimum 2 6 clearance around the unit 2 For compressor removal allow a minimum 3 wide access aisle to and from the unit 3 Local codes or jurisdiction may prevail for unit clearances SUCTION VALVE 22 7 8 LOAD LS Zhe a i ESL o dE e L Fig 2 06D Compressor Unit Dimensions Install a solenoid valve field supplied in liquid line directly before expansion valve Solenoid valve is necessary for single pumpout control used on 06D 07D units Refrigerant filter drier and moisture indicator are shipped with 07D condensing units for field installation Install in liquid line according to manufacturer s instructions Relief valve located on top of condenser 07D units will open to relieve excessive pressure allowing refrigerant to escape Most local codes require piping from safety device to outdoors Refer to Carrier System Design Manual Part 3 for standard piping techniques COMPRESSOR UNITS Connect high and low pressure switch capillary tubes from control box to compressor See Fig 2 Install discharge line muffler accessory in discharge line as close to compressor shutoff valve as possible Electrical Connections UNBALANCED 3 PHASE SUPPLY VOLTAGE Never operate a motor where a phase imbalance in supply voltage is greater than 2 Use the following formula to determine the voltage imbalance Voltage Imbalance max voltage deviation from average
37. ump or fans not operating Refrigerant overcharge Insufficient capacity Low refrigerant charge Control set too high Expansion valve plugged Inefficient compressor Expansion valve setting too high Iced or dirty evaporator Evaporator too small Condensing unit too small Expansion valve too small Restricted or small gas lines Unit operates long or continuously Low refrigerant charge Control contacts fused Air in system Partially plugged or plugged expansion valve or strainer Defective insulation Service load Inefficient compressor Condenser scaled Restricted evaporator air LEGEND TXV Thermostatic Expansion Valve REMEDY Replace fuse or reset circuit breaker Reset thermostat Restart Free pump Rewire Replace Replace control Check connections Check wiring and rewire Check line voltage determine location of voltage drop Check motor winding for open or short Replace compressor if necessary Replace compressor Raise differential setting check capillary for pinches replace control Open valve Add refrigerant Clean strainer Replace Check capillary tube for pinches Set control as required Open valve Purge Clean condenser Repipe as required Start pump or fans Purge Add refrigerant Reset control Clean or replace Check valves and pistons Lower setting Defrost or clean Add surface or replace Add unit or replace Raise suction press
38. unit operating voltage at compressor terminals must be within limits shown on nameplate Phases must be balanced within 2 of voltage refer to Electrical Connections section Contact local power company for correction of improper line voltage or phase imbalance Operation of unit on improper line voltage or with excessive phase imbalance constitutes abuse and is not covered by Carrier Warranty NOTE The 06D 07D unit safety controls are of the automatic reset type If compressor is shut off by a safety control do not permit control to reset more than once before determining cause of shutdown CHECKING OPERATION Refer to Carrier Standard Service Techniques Manual Chapter 2 for complete instructions on checking electrical components Oil Charge See Tables 2A and 2B Check oil level in compressor sight glass after 15 to 20 minutes of operation If oil level is low add oil according to methods described in Carrier Standard Service Techniques Manual Chapter 1 Section 1 11 Add oil through suction manifold connection on 4 cylinder compressors and oil port on 6 cylinder compressors The preferred method for a complete recharge is to sight glass with compressor shut down When additional oil or a complete charge is required use only Carrier approved compressor oil Approved oils are Y bed etd doe Sh kere aS Suniso 3GS Texaco Inc 2 0 ec RR Capella WF 32 Oils approved for R 12 R 22 R 502 Carrier r
39. ure with larger valve Clear restriction or increase line size Add refrigerant Replace control Purge Clean or replace Replace or repair Keep doors and windows closed Check valves Clean condenser Defrost coil clean filters and ductwork PROBLEM System noises Compressor loses oil Frosted suction line Hot liquid line Frosted liquid line Frosted expansion valve LEGEND TXV Thermostatic Expansion Valve CAUSE Piping vibration Expansion valve hissing Compressor noisy Insufficient compressor oil Leak in system Plugged or stuck compressor oil return check valve Oil trapping in line Crankcase heaters not energized during shutdown Expansion valve admitting excess refrigerant Shortage of refrigerant Receiver shutoff valve partially closed or restricted Restricted catchall Restricted strainer drier Ice plugging TXV orifice Moisture indicated by increase in suction pressure Plugged strainer REMEDY Support piping as required check for loose pipe connectors Add refrigerant check for plugged liquid line strainer Check valve plates for valve noise replace compressor worn bearings check for loose compressor holddown bolts Add oil Repair leak Repair or replace Check piping for oil traps Replace heaters Adjust expansion valve Repair leak and recharge Open valve or remove restriction Replace Replace Apply hot wet
40. ve segment If damage to the oil pump or main bearing is found a new pump end bearing head assembly should be installed Replace Refer to Fig 12 and 13 For torque values refer to Table 5 Following steps are used to replace bearing head 1 Bolt bearing head to crankcase Place pump drive seg ment into position and secure to end of crankshaft with cap screws and lock washers that were removed see Fig 13 2 Insert oil feed guide with large diameter inward and place guide retainer spring over small diameter of guide 3 Install gasket and oil pump cover i 2 8 N W O LO Qo i UT Or nml IM I AE ON i of o o 9 6 5 LEGEND 1 Oil Pressure Relief Valve 5 Eccentric Shaft 2 Piston and Eccentric 6 Eccentric Strap Side Strap Assembly Shield 3 Motor End Counterweight 7 Oil Suction Tube 4 Oil Return Check Valve 8 Pump End Counterweight Fig 11 Compressor Bottom Plate Removed PHASE BARRIER POSITIONING KEY SEE FIG 19 15 45 Fig 12 06D Compressor Components 4 Cylinder with Eccentric Shaft Shown 13 LEGEND FOR FIG 12 1 Motor Cover Gasket 17 Oil Drain Plug 34 Oil Ring 2 Motor End Cover 18 Crankcase 35 Compression Rings 3 Discharge Manifold Connection 19 Bottom Plate Gasket 36 Eccentric Strap
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