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1. Y Series Reciprocating Compressor Parts Maintenance Manual Compliments Of CENTRAL ICE MACHINE COMPANY INC t Refrigeration Supplies 800 228 7213 www centralice com 180 20 367 Y 53 SERIES COMPRESSOR UNITS SINGLE STAGE 324 BORE V W OPEN TYPE REFRIGERANTS 12 22 502 AND 717 6 CYLINDER R 12 22 502 COMPRESSOR 12 CYLINDER R 717 COMPRESSOR UNIT CENTRAL ICE MACHINE COMPANY Refrigeration Supplies TOLL FREE 800 228 7213 YORK DIVISION BORG WARNER L FIG 1 Typical 3 3 4 x 3 Compressor Exploded View LS Te No Part Name York Part Part Name York Part No No 1 Compressor Bare See Table T Gasket Compressor Head Plain 070 03813 2 Housing Compressor Bare See Table 2 Gasket Compressor Head Relief Valve Type 070 03812 3 Elbow 90 Street 3 8 NPT x 3 8 023 01688 Screw Cap Top Head Short 14 Per Head 021 01589 3 Gusket Hund Hole Cover Plate 070 0249 Screw Cap Top Head Long 021 01600 5 Plate Cover Handhole Sce Table 3 Valve Cartridge Relief 4468 09331 6 Screw Handhole Cover Plate 021 09592 Gasket Relief Valve Cover 028 0538 7 Head Bearing Pump and Regulating Valve Cover Relief Valve 068 02906 8 Gasket Bearing Head Oil Pump End 028 00824 Screw Cap Relief Valve Cover 02
2. 6 Valve Cage Discharge 064 00372 R 12 22 502 7 Screw Cap 021 12428 8 Lockwasher 021 05268 9 Valve Discharge 064 12164 10 Spring Discharge Valve 029 04010 11 Valve Seat Discharge 064 00374 12 14 Bolt Assembly Valve Seat 364 02674 Gasket Discharge Valve Seat 070 05819 Nut Discharge Valve Bolt 021 09731 FIG 4 suction and Discharge Valve Assemblies YORK DIVISION BORG WARNER York Part No 1 Screen Suction Strainer 029 03847 2 Lockwasher Spring 021 05269 3 Nut Strainer Cover 021 00466 4 Gasket Stud 028 00757 5 Stud Collar 064 00377 6 Cover Strainer 064 00378 7 Gasket Strainer Cover 070 03808 8 Screw Cap 021 01483 9 Cover Suction End 064 00379 FIG 5 suction Strainer Assembly EXTERNAL OIL FEED LINE END VIEW Part Name Worker No Collar Shaft Seal 064 04739 Ring Shaft Seal 064 24443 3 Ri 028 07420 4 Ring Quad Bak 028 07898 1 4 Kit Shaft Seal Repair 364 06577 5 Spring Helical Shaft Seal 12 Req d 029 04010 6 Pin Roll Coverplate 029 04290 7 Ring Retaining 029 09214 8 Collar 029 01845 9 Bearing Main Thrust 064 00324 10 Screw Cap Bearing 021 01483 11 Lockwasher 021 05247 12 Head Bearing Seal 064 00292 13 Screw Cap Hex Socket Hd 021 02590 14 Plate Cover Seal End 064 04722 15 Bearing Head and Coverplate
3. 29 2616 4 3 2314 1434 1444 12 Space needed for removing crankshaft from either end of compressor is 6614 centerline of compressor to wall SERVICE MANUAL Instruction 3W F Page 12 V W COMPRESSOR UNITS FREON AND AMMONIA 3 3 4 X 3 DIMENSIONS rr DISCHARGE CONN J SIDE ELEVATION secl SUCTION CONN H DISCHARGE CONN 3 A FRONT ELEVATION Fiq 10 Dimensions 12 and 16 Cylinder Freon Direct Drive DIMENSIONS Inches NUMBER HP A B D F G 1 F3129 5DE 75 101 35 56 58 23346 26 5 25 93 1170 F3129 9DE 100 1014 35 5676 58 26 5 2 23 1750 F3169 5DE 100 104 35 5776 5634 2245 26 6 3 23 1170 F3169 9DE 150 105 35 57 5634 2276 26 6 3 23 1750 Space needed for removing crankshaft from either end of compressor is 6644 centerline of compressor to wall INSTALLATION GENERAL Before installing one of these compressor units it must be realized that these are precision built high speed machines The importance of cleanliness during install ation cannot be over emphasized Dirt scale rust and any other foreign matter must be removed from the entire system before the compressor is operated The smallest particles of foreign matter can score pistons cylinder liners bearings and seal surfaces and must be prevented from reaching these parts A closely wo
4. V V COMPRESSOR UNITS FREON AND AMMONIA 3 3 AX 3 DIMENSIONS SERVICE MANUAL Instruction 3W F Page 9 Plan Sido Elovation DISCHARGE CONN J 1 D T c 4 Front Elevation Fig 7 Dimensions 4 6 and 8 Cylinder Freon Direct Drive UNIT DIMENSIONS Inches MODEL HP NUMBER A B D E F I F3049 5DE 25 7575 30 47 481 1019 17 2 11 1170 F3049 9DE 40 75 6 30 47 481 6 144 1019 17 2 11 1750 F3069 5DE 40 7613 34 48 5214 14 1246 19 3 2 11 1170 F3069 9DE 50 76196 34 52 14 1246 19 4 2 11 1750 F3089 5DE 50 825 34 51 50 14 1019 19 4 3 11 1170 F3089 9DE 75 87146 3415 5114 50 1478 10155 1936 4 3 1136 1750 Space needed for removing crankshaft from either end of compressor is 3314 centerline of compressor to wall SERVICE MANUAL V M COMPRESSOR UNITS Instruction 3W F FREON AND AMMONIA Page 10 3 3 A X 3 DIMENSIONS WATER OUTLET 4 CYL WATER OUTLET 8 CYL A Cylinder Piping SUCTION CONN H DISCHARGE CONN J HEIGHT WATER OUTLETS 1 4 amp 8 CYL T ee H Lu X M A d li IRR CD Fig 8
5. CRANKCASE COVER York Part No Part Name Float Ball 022 00530 2 Valve Body 068 04541 3 Lever 068 04542 4 Valve 068 04545 5 Nut Selt Locking 021 09610 CENTER 6 Pin Valve 068 01549 7 Pin Lever 06804544 8 Pipe Nipple Special 068 04546 Float Valve Assembl 468 04540 FIG 9 Crankcase Float Valve York Part No 029 05340 021 01361 021 05289 York Part Part Name No 065 00656 064 00397 Part Name Strainer Oil Screw Cap Oil Strainer Lockwasher FIG 10 Packing Internal Oil Header FIG 11 Strainer MISCELLANEOUS COMPRESSOR GASKETS COMPLETE SET York Part No 364 06361 Size Compressor 4 Cylinder 6 Cylinder 364 06362 8 Cylinder 364 06363 12 Cylinder 364 06364 16 Cylinder 364 06365 Part Name York Part No Valve 3 Way for Unloader Cover 022 01278 Gauge Compressor Oil Pressure 026 12667 Valve Solenoid Unloader 115V 025 09704 Valve Solenoid Unloader 208 230V 025 09705 SPECIAL TOOLS York Part No Part Name Spanner Wrench Shaft Seal Nut Y 49 and 53 Type Shaft Seals Socket Wrench Relief Valve Funnel Ring for Compression of Piston Rings When installing Piston 041 04136 068 02913 064 00240 GUIDE PIN VALVE PLATE SPRING SUCTION VALVE Y rk Part No 064 03447 Part Nam
6. 028 00824 16 Screw Cap Coverplate 021 09204 17 Plug Drain 064 24444 18 1 4 SAE X 1 4 MPT 023 04729 19 1 4 SAE X 1 4 SAE X 1 4 MPT 023 04100 Nut 1 4 SAE 021 05675 Tubing 1 4 Steel Order by Ft 003 00235 SHAFT SEAL PARTS Y 49 AND Y 51 MODELS Kit Shaft Seal Conversion Contains 364 05434 Material to Convert Y 49 or Y 51 Type Seal Assembly to Y 53 Type Nut Seal Collar Locking 2 Required 064 00313 FIG 6 Shaft Seal and Bearing Head Y 53 Type YORK DIVISION BORG WARNER Y 53 SERIES 3 BORE V W OPEN SINGLE STAGE R 12 22 502 717 UNITS FORM 180 20 RP Item Parc Name York Part No No 1 Bearing 4 Required 064 00321 2 Bushing Taper 2 Required 064 00320 3 Screw Cap Bearing Locking 021 01598 4 Washer 10 Required 021 05155 5 Nut Self Locking 5 Required 021 13257 1 5 Bearing Assembly Main Center 364 00317 12 and 16 Cylinders 6 Pin Dowel Center Bearing 064 00322 7 Union 1 4 SAE X 1 8 MPT 023 01304 Note Torque for bearing bolts Item 1 60 Ft Lbs Torque for bearing locking screw Item 3 20 Ft Lbs FIG 7 Center Main Bearing 12 and 16 Cylinder Compressors York Part No Packing Grand Sight Glass Cap Screw 064 00302 021 01477 1 Gasket Sight Glass 028 00778 2 Sight Glass 026 03992 3 Packing Sight Glass 028 01519 4 5 FIG 8 Oil Sight Glass Bulb Type
7. 2 640 002 Cheeks 8616 Cyl Fig 39 Crankcase Float Valve 5001 6 Center 3 2555 0005 PARTS LIST Fig 39 a 0000 8 2 6315 0005 Ref 0000 No Item 1 Float Ball 2 Mes Ped REPLACEMENT PARTS E EIS NIME The compressors have a factory number e Pin stamped on the compressor housing T Pi 8 3 4 Oval Flanges The factory number is stamped on top of gasket bolts amp ut the compressor housing directly above the 1 8 Float Valve Assembly suction connection on 4 6 and 8 cylinder compressors SERVICE MANUAL Instruction 3W F Page 48 REPAIR PARTS STOCK LIST V W COMPRESSOR UNITS FREON AND AMMONIA 3 3 4 SERVICE The factory number is stamped on the compressor housing directly above the publicity plate left hand side facing the seal end on the 12 and 16 cylinder com pressors When ordering replacement parts for any compressor be sure to specify the following a Name of part i b Part number c Factory number or serial number of compressor d Quantity of parts required to enable good service on these compressors Table 9 lists the recommended quantity These quantities are based on the number of of repair parts that should be held in stock compressors installed SUBJECT TO CHANGE WITHOUT NOTICE TABLE 9 Compressors Installed Repair Part 11 to 25 26 And Up Complete Seal Assem 351 3 5 1 Seal Collars 3
8. 8 9 SUCTION STRAINER The strainer assemblies can be removed from the suction or the discharge end of the 4 6 and 8 cylinder compressors the 12 and 16 cylinder they can be removed in one way from the discharge ends NOTE Whenever possible remove the strainer assem bly from the discharge end of the 4 6 and 8 cylinder compressors To remove the strainer assembly from the discharge end of the following procedure is recommended See Fig 38 a Pump out the compressor b Remove any tubing that may be in front of the strainer cover SUCTION 7 9 8 GAS COMPRESSOR HOUSING MORS CYL ONLY Fig 38 Suction Strainer Assembly Remove the bolts 8 from discharge end strainer cover 6 NOTE Do not re move the nut located in the center of this cover d Remove the strainer assembly from the compressor housing e If it is necessary to replace the strainer screen remove the cover nut cover gasket stud and lockwasher 5 6 and 7 Upon reassembly make sure the cover to stud gasket is in its proper place f When replacing the strainer be sure it enters the hole in the compressor housing Forcing the strainer in by use of the cover cap screws will col lapse it Belt driven 4 6 and 8 cylinder compres sors may present some difficulties because of the flywheel in the removal of the strainer assembly from the discharge end To remove the strainer from the suction e
9. CONNECTION FOR COMPRESSOR UNITS CONNECTION To SUCTION ON CONNECTION TO SUCTION ON 4 6 AND 8 CYLINDER Fig 17 Oil Pressure Failure Switch Connections oil pressure and is furnished with each Freon compressor It is shipped loose and should be mounted on a wall or other con venient location close to the compressor with 1 4 O D tubing extending from the oil pressure gauge to the bottom or high pressure bellows capillary and 1 4 0 0 tubing from the upper or low pressure bellows capillary to the suction side of the compressor See Fig 17 Wire as shown in Fig 18 The ammonia oil failure switch is furnished with all ammonia units shown in the insert of Fig 17 is the type 275 APIONA and is similar to the Freon switch Steel tubing must be run direct to the bellows connections CRANKCASE FLOAT Fig 39 shows a cross section of a compressor hand hole cover with the crank case float installed One hand hole cover on each compressor is drilled and tapped to receive this float NOTE The shipping plugs in this cover are put in with white lead only If the tapped holes are not to be used the plugs should be removed and put back in using litharge and glycerine WATER JACKET PIPING Ammonia only All water connections in and out of the compressor water jackets are tagged See Figs 6 8 and 10 The piping to the com pressor jackets should have a stop valve to control the supply in order to maintain
10. SSA OUTLET 4 Front Elovation SUCTION CONN H HEIGHT OF 24 WATER OUTLETS 4 amp 8 CYL 2 4 WATER INLETS 4 6 amp 8 Fig 6 Dimensions 4 6 and 8 Cylinder Ammonia Belt Drive C3 4 Cylinder Piping DISCHARGE CONN J Side Elevation UNIT DIMENSIONS Inches MODEL NUMBER A B D E F G H J K L M N P R 8 A3049 2BE 69 3934 44 4626 14 1056 1534 24 2 20 5 144 8 A3049 3BE 69 39X 44 4614 14 1056 1534 24 21 20 14 7 8 A3049 4BE 69 39M 44 46 14 10 1534 24 2 20 534 14 8 A3049 5BE 69 40 454 4614 144 1056 1534 28 21 20 534 144 7 A3069 3BE 76 43 4614 4915 1415 12 1624 215 2 20 me 12 10 5 A3069 4BE 76 43 4614 4914 14 1216 16 2 2 20 12 10 5 A3069 5BE 76 43 4834 4914 14 12X 1634 2 2 20 wg 12 10 5 A3089 4BE 76 45 4815 47 14 10 1634 3 20 3 14 1096 5 3089 5 76 45 4816 47 14 10 1624 3 3 20 3 14 10 5 Space needed for removing crankshaft from either end of compressor is 3316 of compressor to wall
11. conducts oil 4 from the oil filter to the seal chamber PUMP OUT AND BYPASS CONNECTIONS keeping it filled during operation This insures a flooded seal When so specified pumpout and bypass connections are assembled to the compressor at the factory Fig 21 shows compressors with these pumpout and bypass connections installed DISCHARGE SUCTION OIL CIRCULATING SYSTEM See Figs 22 amp 23 The gear oil pump located on the rear end of the compressor and driven by the crankshaft takes oil from the Vortex eliminator with its screen in the crank case and forces it through the oil filter to the oil header extended through both ends of the crankcase and sealed at each end by a packing ring to prevent leakage Oil for the main and thrust bearings is Supplied through orifices from this header Drilled oil ways in the shaft conduct the oil to the crank pins Drilled passages in the conn cting rods conduct the oil from the crank pin bearings to the wrist pin in each piston The oil supply line to the thrust bear 4 6 AND 8 CYLINDER AMMONIA 12 ANDI6 CYLINDER Fig 21 Pump out and By Pass Connections V W COMPRESSOR UNITS SERVICE MANUAL FREON AND AMMONIA Instruction 3W F 3 3 4 X 3 Page 25 OPERATION AND ADJUSTMENT SEAL END PUMP END NO 8 ORIFICE ON 4 648 CYL NO 4 ORIFICE ON 12816 CYL OIL TO CENTER SEALS MAIN BEARING 12 81 YL VALVE NO 6 ORIFICE OIL PRESSUR
12. 09932 Screw Cap Discharge Manifold Short 4 6 8 12 021 12307 38 Washer Connecting Rod Bolt 1064 00363 16 Cylinder 1 2 3 3 4 36 37 gt Fill Piece Discharge Manifold 6 12 Cylinder 064 00751 58 Connecting Rod Bolt Set of 2 Bolt Nut Washer 364 05384 Gasket Discharge Manifold Valve 528 657 Connecting Rod Assembly Complete Rod Cap Bolt 364 09881 4 6 and 12 Cylinder Nut Washer R 12 22 502 Gasket Discharge Manifold to Valve 028 00869 Connecting Assembly Complete Rod Cap Bolt 364 10084 8 and 16 Cylinder Nut Washer R 717 Gasket O Ring Sight Glass For Fis For Bulb Type 028 0679 31 Piston Pin 029 01507 Glass Oil Sight Type 026 10797 42 Spring Locking Piston Pin 2 Required 029 00274 Screw Cap Oil Sight van CES 021 01372 43 Piston Bare 064 00360 Gasket Bearing Head Seal End 028 0824 44 Piston Ring Ventilated Oil 029 04452 Heater Crankease 300 Watt 120 Volt Nema 1 025 09422 45 Piston Ring Compression 2 Required 029 03669 Heater Crankcasc 300 Watt 240 Volt 1 025 09421 41 45 Piston Assembly 364 0364 Shaft Seal Assembly See Fig 6 36 Muter Discharge 063 06119 Valve Control Capacity Sce Table 4 Manifold Discharge 4 Cylinder 1 Required 361 2093 Gasket O Ring Capacity Control Valve 028 04754 Manifold Discharge 6 and 12 Cylinder 364 20992 Ring Retaining Capacity Control Valve to 029 086
13. 11612 12 3 H 9400 T amp 8 13812 15816 3 11412 15416 RECH 3 H 12 d ens 3 4 768 11 12 156 9610 3 H 88 9810 d 1 amp 2 11 amp 12 15416 3 4 788 11812 15816 182 9810 L 3 Y 11 amp 12 15616 162 9410 3 4 EE 12 21212 15816 3 8 9 amp 10 11412 15816 H 3 385 768 11612 15216 142 9810 Y Y 1586 788 d 11812 15816 H E 11612 15816 162 4 x 3232 15616 2 182 1581 11812 4 D 142 910 3 amp 4 7 amp 8 11812 15 16 4 4 38h 11612 15816 H 18 Se 11812 15816 m 7 11612 158 4 4 a 728 11612 15816 182 9810 1 5 148 ES 90 142 11812 15816 H 5 1412 1586 1 amp 2 9810 H 5 1 15816 E 9810 5 5 148 ES 15816 182 5 5 ES 12 11812 15816 5 5 1412 15816 E 162 900 5 5 1412 15616 148 Zei E 9810 6 6 15 6 11812 1 Sein Manual Unloading 788 1516 11812 12 9810 NOTE Pairs of Cylinders Inside Parentheses are Controlled by One Solenoid V W COMPRESSOR UNITS FREON AND AMMONIA SERVICE MANUAL Instruction 3W F 3 3 4 X 3 Page 31 OPERATION AND ADJUSTMENT TABLE 6 12 CYLINDER COMPRESSOR AUTOMATIC UNLOADING SEQUENCE TOTAL POSSIBLE CAPACITY VARIATION IS FROM 100 TO 33 1 3 Increments
14. 5 1 Lead Gaskets 6 Sets 10 Sets 10 Sets Connecting Rod Assembly 6 10 10 Piston Assembly 6 10 10 Compression Rings 3 Machine Sets 5 Machine Sets 7 Machine Sets Ventilated Oil Rings 3 Machine Sets 5 Machine Sets 7 Machine Sets Cylinder Sleeves 6 10 10 Suction amp Disch Valve Assembly 3 5 5 Suct amp Disch Valve Ring Plates 3 Machine Sets 5 Machine Sets 7 Machine Sets Suction Valve Plate Gaskets 6 12 16 Oil Pump Assembly 1 2 3 Oil Pump Gaskets 4 6 6 Bearings Main 6 Thrust 2 Sets 2 Sets 2 Sets Center Bearing Assy 12 6 16 Cyl 1 1 1 Main amp Thrust Bearing Head Gaskets 4 6 6 Head Gaskets 12 24 36 Discharge Manifold Gaskets 12 18 18 Hand Hole Cover Gaskets 8 12 16 PRINTED IN U S A PPC 500 280 1 20 Code Form 180 20 N1 3WF CENTRAL ICE MACHINE COMPANY simi m Refrigeration Supplies SIN Int TOLL FREE 800 228 7213
15. Dimensions 4 6 and 8 Cylinder Ammonia Direct Drive ve DIMENSIONS Inches MODEL NUMBER a 8 C I L IM A3049 5DE 40 7514 3034 47 48 1414 1056 17 2 2 1198 14 74 8 54 A3069 5DE 60 825 3434 5114 5214 1476 12 19 234 234 11 104 12 5 A3089 5DE 75 87X 34 5124 50 14 10 19 3 11 1434 10 5 Space needed for removing crankshaft from either end of compressor is 3314 centerline of compressor to wall V W COMPRESSOR UNITS SERVICE MANUAL FREON AND AMMONIA Instruction 3W F 3 3 4 X Page 11 DIMENSIONS WATER OUTLETS 16 CYL 1 IN WATER INLET Front Elevation Fig 9 Dimensions 12 and 16 Cylinder Ammonia Direct Drive UNIT DIMENSIONS Inches MODEL HP NUMBER 7 I I A3129 3DE 100 104 38 9614 5876 23 26 4 214 2314 114 12 A3129 5DE 125 1054 38 56 5876 23 26M 4 2 23 0 114 12 3169 50 150 1057 3826 57 5634
16. Freon Belt Drive UNIT DIMENSIONS Inches MODEL d NUMBER D E F G H J K F 3049 2BE 69 38 44 466 14 100 15 2 2 20 F 3049 3BE 69 38 44 46 14 101 15 2 2 200 F 3049 5BE 69 39 45 4 14 10196 15 2 20 F 3049 7BE 69 3994 45 46 14 101 15 2 20 3049 9 69 39 454 46 1414 10196 15 2 20 3069 5 69 4016 44 48 14 101916 15 2 20 3069 6 69 401 474 48 5 14 10196 15 4 2 20 3069 8 69 4016 47 4 48 14 10196 15 4 2 20 3069 9BE 69 401 6 48 14 10196 15 4 2 20 F 3080 5BE 69 41 47 463 14 101 15 4 3 90 F 3080 7BE 69 41 4 14 101 15 4 3 20 F 308 9BE 69 41 46 14 10196 15 4 3 20 Space needed for removing crankshaft from either end of compressor is 3344 centerline of compressor to wall SERVICE MANUAL Instruction 3W F Page 8 V W COMPRESSOR UNITS FREON AND AMMONIA 3 3 4 X 3 DIMENSIONS E WATER OUTLET 8 CYL Ka T Nay Plan WATER OUTLET 6 CYL OPPOSITE SIDE
17. In Capacity And Unloading Number Number Sequence of Cylinders See Fiq 28 of Steps Solenoids 83 1 3 66 2 33 1 3 1 1 566 1 1 162 566 1 2 162 566 11612 1 2 162 566 768 11612 2 2 566 162 2 2 11612 162 566 2 2 162 566 11612 2 2 162 566 168 11612 2 3 566 162 768 11612 2 3 162 566 768 11612 2 3 5660768 11612 162 LL 3 3 566 162 11612 3 3 566 162 168 11512 3 3 566 168 11612 162 3 3 168 11612 556 162 4 4 566 162 11612 168 Manual Unloading 556 162 11612 158 NOTE Pairs of Cylinders Inside Parentheses are controlled by One Solenoid TABLE 7 8 CYLINDER COMPRESSOR AUTOMATIC UNLOADING SEQUENCE TOTAL POSSIBLE CAPACITY VARIATION IS FROM 100 TO 25 Increments in Capacity And Unloading Number Number Sequence of Cylinders See Fig 28 of of Steps Solenoids 75 50 25 1 1 162 1 1 162 566 1 2 162 566 768 2 2 162 566 2 2 168 162 566 2 2 162 566 168 3 3 162 566 768 Manual Unloading 162 NOTE Pairs of Cylinders Inside Parentheses are Controlled by One Solenoid TABLE 8 6 CYLINDER COMPRESSOR AUTOMATIC UNLOADING SEQUENCE TOTAL POSSIBLE CAPACITY VARIATION IS FROM 100 TO 33 1 3 Increments In Capacity And Unloading nies Nunber Sequence of Cylinders See Fig of Steps Solenoids 66 2 3 33 1 3 1 1 162 1 1 162 556 2 2 162 566 Manual Unloading 162 566 NOTE Pairs of Cylinders Inside Parentheses are Co
18. a water temperature out of tie jacket at approximately 95 F Provision should be made in the inlet water lines to drain the water jackets during shutdowns NOTE This is especially important when the compressor is used on booster applica tion when there is danger of freeze up It is essential that all water be drained from the jackets every time a booster compressor is shut down Failure to do this can result in a cracked housing As most ammonia systems are hand operated the drain valves can also be hand valves but automatic systems will require the use of solenoid valves which will operate to drain the water jacket whenever the compressor motor is shut down PRESSURE CONTROLS AND GAUGE BOARDS Mount the gauge board and pressure controls on a wall or other convenient location close to the unit and install the gauges Run lines from the 1 4 fpt con nections on the suction ell and the dis charge manifold to the gauges Insert a tee in these lines to the gauges and run lines to the pressure controls Use 1 4 steel pipe or cold drawn seamless steel tubing annealed suitable for bending expanding and flaring NOTE On the 12 and 16 cylinders com pressors the suction gauge connection is in the housing close to the suction stop valve The discharge gauge line should be run from a tap in the common discharge main before the oil separator The high sure cutout line should be run from one compressor discharge manifo
19. an inside micrometer Check at four points moving the motor as necessary Clamp a dial indicator to the motor half coupling with its pointer against the outer periphery of the compressor half coupling Rotate the motor shaft observing any fluctuations of the indicator Move the motor and shim until the indicator is stationary when revolving the shaft one full turn Recheck the parallel alignment to be sure that it was not disturbed by operation f When the alignment is complete bolt the motor in place and dowel pin both the compressor and motor Rotate the motor shaft so that its key way is 180 from the compressor shaft keyway Loosen the motor coupling set screws so that the coupling is free to slide on the shaft Remove all bolts from the center assem bly and bolt the discs to the two coupling hubs The center fill piece may now be bolted in place Check to be sure the rotor is on its magnetic center Tighten the motor half coupling set screws Apply the coupling guard to prevent accidents V W COMPRESSOR UNITS FREON AND AMMONIA 3 3 AX 3 SERVICE MANUAL Instruction 3W F Page 21 INSTALLATION CONTROL WIRING A suagested control wiring diagram is shown in Fig 18 This shows one automatic capacity reduction solenoid and a limit thermostat in the starter control circuit NOTE Before wiring the unloader sole noids for automatic capacity reduction xefer to Table 5 6 or 8 and Fig 28 for th
20. and remove the beltwheel or flexible coupling hub from the crankshaft b Loosen the cover plate cap screws to allow the oil to drain from the seal cavity c Remove the oil lines from the side and PARTS LIST Fig 35 a g h V W COMPRESSOR UNITS FREON AND AMMONIA 3 3 4 X 3 top of the cover plate and then remove the cover plate and shaft seal ring as one unit See Figs 34 and 35 Examine the running faces of the shaft seal ring and the seal collar for dirt grit scratches cracks or excessive wear If the faces show any of the items just mentioned the worn part or parts need replacing Remove the seal ring and 8 springs from the cover plate Remove the two locking nuts the seal collar and its locking ball Do not pry from the back of the seal collar Use the groove provided or jack it off with the bearing jack screws See Thrust Bearing Seal End for procedure Clean all parts to be re used in an approved safety solvent as well as the entire seal cavity Ref No 1 Main Bearing 2 Main Bearing Pin 3 Oil Pump Drag Crank 4 Main Bearing Head with Plugs 6 Fitting 5 Main Bearing Head Cap Screw 6 Pressure Regulating Valve 6a Valve Spring 6b Valve Cap Gasket 6c Valve Stem Packing 6d Valve Check Ball 6e Valve Body Fibre Gasket 6f Valve Body Copper Gasket 9 011 Pump Insert 10 0 Ring Packing 11 Oil Pump Insert Cap Screw 12 Lockwasher 13 Oil Pump Gasket 14 O
21. and spring the connecting rods z Remove the bearing head and clean all parts with cleaning solvent NOT use raqs for WIPING BLOW out moisture and foreign matter with dry air or nitrogen f Do not install a bearing into the housing prevent possible damage to bearing the following procedure is recommended l Replace the bearing head without the aluminum bearing in place With the bearing head in place slip the aluminum bearing over the shaft into the housing Care should be exercised to prevent scoring or upsetting metal on the thrust ends and load surfaces Upset metal on the bearing surfaces and high rotating shaft speeds might start Scoring of the bearing surface and shaft journal Be certain the oil hole in the bearing is at the bottom Remove block ing from under the shaft 3 With washers and cap screws tighten the bearing in place against the seating surface The shaft seal collar with the O ring are assembled and installed on the shaft with the steel locking ball in place 5 Use the Spanner wrench to lock the shaft seal collar nuts SERVICE MANUAL Instruction 3W F Page 44 V W COMPRESSOR UNITS FREON AND AMMONIA 3 3 4 X 3 SERVICE 6 Replace the seal and the belt wheel or coupling Checking Shaft Thrust Clearance a The shaft must be pushed tight against the inside thrust surface Pull the shaft toward the drive end b Measure the clearance see Fig 3
22. steel sheath inside the crankcase The electrical terminals should be horizontal so that the entire header is submerged in oil OIL FILTER The disc type oil filter is provided with a ball check which will open when the pressure drop through the oil filter is 15 lbs or more Therefore if the oil filter becomes plugged oil will by pass the filter and go directly to the filter outlet IIS VOLT HEATER WITH BOX PART 26 5044 P OR 230VOLT HEATER WITH BOX PART NO 26 5943P STRAIGHT CONNECTOR TOBE FURNISHED IN THE FIELD Fig 24 Crankcase Oil Heater V W COMPRESSOR UNITS FREON AND AMMONIA 3 3 4 SERVICE MANUAL Instruction 3W F Page 27 OPERATION AND ADJUSTMENT TEE HANDLE FOR CLEANING FILTER DISK TYPE Fig 25 Oil Filter NOTE The ball check is a safety device only Particular attention should be given to the cleanliness of the oil filter so the ball check will not have to function The oil filter See Fig 25 removes foreign matter from the oiling system and must be removed and cleaned after the compressor has operated about 30 days Cleaning is recommended every six months thereafter The tee handle should be turned at least one full revolution daily to pre vent plugging with foreign matter removed from the oil The handle may be turned in either direction If the handle turns hard through occa sional neglect rotate the cartridge back and forth until the handle
23. the suction valve guide pin order new pins 64 368PK and proceed as follows a Drill an 1 8 hole from the top of the valve plate if not already there b Use a drift pin in this hole to drive out the worn guide pin c Drive in the new guide pin V W COMPRESSOR UNITS FREON AND ANMONIA 3 3 4 X SERVICE MANUAL Instruction 3W F Page 35 SERVICE SUCTION VALVE GUIDE PIN Fig 29 Suction and Discharge Valve Assembly CAPACITY REDUCTION The method of capacity reduction is accomplished by means of unloader pistons which operate from oil pressure When the machine is not in operation each bank of cylinders equipped with capacity reduction unloads completely thereby eliminating the necessity of a starting by pass or a special motor to overcome high starting torque Another advantage of this type of capacity reduction is its very low penalty on brake horsepower per ton at partial capacities When the compressor is not in operation the unloader mechanism which is operated PARTS LIST Fig 29 Item 4 Suction Valve Ring Plate 2 Suction Valve Spring 3 Valve Plate 6 Guide Pin Freon Ammonia 4 Valve Plate Cap Screw 5 Valve Plate Washer 6 Discharge Valve Cage Freon Ammonia 7 Discharge Valve Cage Cap Screw 8 Discharge Valve Cage Washer LI Discharge Valve Ring Plate 10 Discharge Valve Spring 1 Discharge Valve Guide Pin 12 Discharge Valve Seat 1
24. 1 01495 9 Filter Disc Type 026 016858 Strainer Assembly Suction See Fig 5 Screw Cap Filter Cover 021 013538 Cover Unloader Piston 064 00358 11 Gasket Filter Cover 064 20129 Gasket Unloader Piston Cover 070 03810 Gasket Suction Elbow 4 6 8 CI 028 00875 Screw Cap Unloader Piston Cover 021 01485 12 Gasket Suction Stop Valve 12 Cyl 028 0551 Screw Cap Flywheel 021209500 Gasket Suction Stop Valve 16 Cyl 028 00882 Lockwasher Spring Flywheel Bolt 021 05276 13 Cylinder Sleeve Assembly Sec Fig Washer Flat Flywheel Bolt 3364 03284 14 Unloader Device See Fig Crankshaft 4 Cylinder 363 00312 001 15 Gasket Discharge Valve Plate 1 Per Cylinder 070 03814 Crankshaft 6 Cylinder 364 00311 001 16 Valve Assembly Suction and Discharge See Fig 4 Crankshaft 8 Cylinder 364 00310 001 17 Head Compressor Plain 068 00293 Crankshaft 12 Cylinder 364 00309 001 18 Head Compressor Relief Valve Type 1062 00294 Crankshaft 16 Cylinder 364 00308 001 YORK DIVISION BORG WARNER Y 53 SERIES 3 BORE V W OPEN SINGLE STAGE R 12 22 502 717 UNITS FORM 180 20 Tiom BUNE York Part Kg ius 35 Key Crankshaft mmm Screw Cap Discharge Manifold 6 and 12 Cylinder 021 08898 36 Bolt Connecting Rod be 064 00362 4 and 8 Required 1 2 x 5 37 Nut Connecting Rod Bolt 021
25. 1750 12 6 1450 14 634 6 90 62 4 64 44308 12 6 1800 12 6 6 90 612 64 44505 F 3089 5BE 1170 16 6 1450 13 6 6 96 624 64 44445 16 6 1800 10 6 6 96 56 6 64 6125 3089 7 1440 12 636 1450 11 6 6 Ccog 90 806 64 44395 12 6 1800 107 535 6 Ccog 90 662 64 20275 3089 9 1750 12 6 1450 1434 6 6 Ccog 90 874 64 44405 12 6 1800 12 6 6 cog 90 856 64 44515 SERVICE MANUAL Instruction 3W F V W COMPRESSOR UNITS FREON AND AMMONIA Page 6 3 3 4 X 3 PHYSICAL DATA TABLE 4 V BELT DRIVE DATA AMMONIA UNIT COMPRESSOR MOTOR V BELT DRIVE PKG Flywheel Pulley Model RPM Face R P M Face No Der Ads Pat Number Minis E CC Width Dia Width tion Ten gth bhp Number A 3049 2BE 750 16 514 1450 834 516 7 B 97 25 1 64 44415 16 536 1750 5 7 97 240 64 6098 A 8049 3BE 875 16 696 1450 10 6 6 90 43 2 64 44428 16 5 1750 84 7 97 272 64 6108 A 3049 4BE 1015 16 63 1450 11 63 6 96 53 8 64 44438 16 624 1750 9X 634 6 96 428 64 6118 A 3049 5BE 1170 16 634 1450 13 6 96 624 6444448 1
26. 3 Discharge Valve Seat Bolt 14 Discharge Valve Seat Gasket 15 Discharge Valve Seat Nut 13 15 Bolt Assembly 6 9 15 Complete Discharge Valve Assembly Freon Ammonia DISCHARGE PORTS THIS LINE PARALLEL TO WRIST PIN AND CRANKSHAFT DISCHARGE VALVE Fig 30 Spacing of Discharge Valve Cages SERVICE MANUAL Instruction 3W F Page 36 V W COMPRESSOR UNITS FREON AND AMMONIA 3 3 AX 3 SERVICE ee 3 4 3 CLIPS GUIDE PIN SPRING VALVE PLATE SUCTION VALVE Fig 31 Clips Applied to Suction Valve Plate by oil pressure is in the position shown in Fig 32 The unloader spring 4 pushes the unloader piston 1 and the unloader rod 5 back thereby rotating the cam rings 6 so that the lift pins 7 are raised on the cams These lift pins raise the compressor suction valves compressing the suction valve springs The unloader remains in this position until the compressor is started and the oil pressure reaches approxi mately 30 psi at which point the pressure pushes the unloader piston back against the unloader spring This motion is transmitted to the cam ring which rotates and lowers the lift pins allowing the suction valve to act as a normal valve The lift pins 7 are beveled with a 159 taper on the end riding on the cam ring 6 so that the pin will have full contact with the cam The lift pin spring 9 is com pressed when the cyl
27. 3 shows the method of applying these isolator spring assemblies to each side of the base on the 12 and 16 cylinder units The procedure is as follows a Determine the number of springs re quired so that each spring will support its approximate design load keeping in mind that an even number of springs must be used to support the base evenly on opposite sides b Raise the compressor unit 6 off the floor c Remove the mounting washer mounting cap screw and shipping stud nut from the isolator unit See Fig 13 d Insert the shipping stud through the hole in the compressor unit base See Fig 14 for the suggested location of the isolator assemblies e Place the mounting washer on the ship ping stud and fasten the isolator unit to the base with the shipping stud nut See Fig 13 Be sure the springs are properly seated f Lower the unit so that the isolator assemblies take the full weight Fig 13 Applying the Vibration Isolator V W COMPRESSOR UNITS SERVICE MANUAL FREON AND AMMONIA Instruction 3W F 3 3 4 X Page 15 INSTALLATION e FREON AND 4 CYLINDER DRIVE 3460 0 Ho FREON AMMONIA E H 6 amp 8 CYLINDER BELT ORIVE 6 amp 8 CYLINDER ONLY FREON ANO AMMONIA 00 29 SEC IDE 29 sual DIRECT DRIVE MOTOR E
28. 4 between the thrust side of the seal collar and aluminum bearing thrust face with the feeler gauge Minimum clear ance 003 maximum clearance 006 c Alternate method for checking Thrust clearance Mount dial indicator against the end of the shaft and pry shaft toward pump end set dial indicator at zero and pry shaft toward drive end and record the dial indicator readings They should be 003 to 006 If exceeded instal new bearing Center Main Bearing 12 amp 16 Cylinder Only Made of aluminum alloy with spider type shell cast in one piece and split verti cally at the top and provided with wedge type bolt for expanding and locking bearing into position in the housing bore See Fig 36 The following procedure is recommended for replacing the center main bearing in the 12 and 16 cylinder compressor a Drain the crankcase oil and disconnect the oil piping b Remove the top heads suction valve cages suction valve plates and suction valve rings NOTE Do not drop suction valve springs in cylinders c Remove the connecting rod caps PARTS LIST Fig 36 Bearing Assembly Center Bushing Center Bearing Dowel Pin Center Bearing COMPRESSOR HOUSING 20 TAPPED HOLE M PIPE PLUG Fig 36 Center Main Bearing 12 and 16 Cylinder Only te h 1 0 1 Ku V W COMPRESSOR UNITS
29. 59 37 2 Required Coverplate Manifold Discharge 8 and 16 Cylinder 364 2091 Bearing Assembly Center 12 and 16 Cylinder Compressor Sec Fig 7 U and 2 Required Glass Oil Sight Bulb Type See Fig 8 38 Gasket Discharge Manifold to Compressor 1070 09705 Crankcase Float Valve See Fig 9 as Screw Cap Discharge Manifold 6 and 12 Cylinder 021 0899 Packing Internal Oil Header Sce Fig 10 4 and 8 Required 1 2 x 5 1 2 Oil Strainer TABLE 1 BARE COMPRESSORS LESS MANIFOLDS STOP VALVES AND BASE Bore and Stroke Number Cylinders R 12 Part Number 02 Part Number R 717 33AX3 464 11961 361 13362 33 Ax3 464 1196 464 13363 33Ax3 464 11963 464 13364 33Ax3 464 11964 4164 13365 33 X3 464 11965 TABLE 2 COMPRESSOR HOUSING BARE 464 13366 TABLE 3 CRANKCASE COVER PLATES Size Compressor Pan nier m Part Name pr y 4 Cylinder 364 04123 001 364 04122 001 Cover Plate Complete With Sight Glass 364 18963 6 Cylinder 364 04117 001 364 04116 001 Cover Plate Complete With Capacity Con See Table 8 Cylinder 364 04121 001 364 04120 001 trol Valve Suction Pressure Actuated 4 amp 4a 12 Cylinder 364 04115 001 364 03114 001 Cover Plate Complete With Capacity Con See Table 16 Cylinder 364 04119 001 364 04118 001 trol Valve Temperature Actuated 4 amp d gt Cover Plate for Float Valve 064 00296 Replacement compressor ho
30. 6 634 1750 10 696 6 96 524 64 6125 A 3069 3BE 875 16 esg 1170 1228 63 6 C 105 515 64 6145 16 63 1450 10 6 6 96 43 2 64 44426 16 634 1750 836 63 6 96 58 8 64 44475 A 3069 4BE 1015 16 634 1170 14 e 6 C 105 60 0 64 6158 16 6 1450 11 6 6 96 53 3 64 24435 16 63 1750 906 634 6 96 62 5 64 44495 A 3069 5BE 1170 16 634 1450 19 634 6 Ccog 96 87 4 64 44455 16 634 1750 10 634 6 96 79 2 64 44485 A 3089 4BE 4015 16 63 1170 6 6 C 105 515 64 6145 J 167 634 1450 11 634 6 96 75 0 6444468 16 684 1750 934 634 6 96 62 5 64 14495 A 8089 5BE 1170 16 63 1450 13 6 6 Ccog 96 87 4 64 44455 16 634 1750 10 6 6 C 96 79 2 64 44485 V W COMPRESSOR UNITS FREON AND AMMONIA ER 3 4 DIMENSIONS SERVICE MANUAL Instruction 3W F Page T o FT war Front Elevation SUCTION CONN H DISCHARGE CONN J Side Elevation Fig 5 Dimensions 4 6 and 8 Cylinder
31. C service Adjustments The oil failure switch incor porates a direct reading visible calibrated Scale indicating the cut in and cut out points The switch is factory set to cut out at 10 psig and to cut in at 18 psig above the suction pressure Changes in the settings are made by adjusting cam C Fig 16 and nut D Turning cam C clockwise viewed from top raises both cut in and cut out settings and turning cam C counter clockwise lowers both settings Turning adjusting nut D clockwise viewed from top lowers the cut out setting and turning adjusting nut D counter clockwise raises the cut out settings SERVICE GENERAL Before dismantling a compressor for repairs observe the following precautions a Be sure the faulty operation of the plant is caused by the compressor and not some other part of the plant b Dismantle only the part of the compres Sor necessary to correct the fault c Never open any part of a compressor which is under a vacuum be sure there is some pressure inside as indicated by a reading above zero on the gauge If the compressor is opened while under a vacuum air will be drawn in with moisture This moisture laden air will come in contact with machined parts which have been exposed to Freon and rapid corrosion will result 15 an excellent cleaning agent and will remove any natural protective coating of the iron or steel seaving the raw metal exposed d I
32. E GUAGE OIL FROM SEAL OIL CAVITY Y OIL PRESSURE PER REGULATING OIL TO SEAL PUMP DISCHARGE OIL CAVITY OIL PUMP 6 8 12416 CYLINDER OIL RETURN OIL DRAIN AND CHARGING OIL TO MAIN BEARING NO 4 ORIFICE ON 4 648 CYLINDER 4 NO 8 ORIFICE ON e 2 PUMP SUCTION 12816 CYLINDER FOR UNLOADER ABER SWITCH OIL FILTER OIL FROM OIL FILTER FROM PUMP PACKING NO 65 656 PK 4 CYLINDER OIL RETURN ARRANGEMENT HEADER PACKING Fig 22 Oil Piping Center Main Bearing 12 and 16 Cylinder A seal oil drip connection open to the atmosphere is provided Five to 10 drops Oil to the center main bearing is sup of oil per minute during operation is per plied through a No 4 orifice from a missible If more than 10 drops per minute connection in the oil header near the the seal parts should be inspected vertical center line in the crankcase SERVICE MANUAL Instruction 3W F Page 26 V W COMPRESSOR UNITS FREON AND 3 3 4 OPERATION AND ADJUSTMENT Fig 23 Oil Pump Operation OIL PUMP OPERATION The oil pump is of the internal gear type with the rotor See Fig 23 being actuated by a drag crank driven by the compressor shaft Thus the driving power is applied to the rotor and transmitted to the idler with which it meshes The space betwee
33. E MANUAL Instruction 3W F 3 3 A X 3 Page 5 PHYSICAL DATA TABLE 3 V BELT DRIVE DATA FREON UNIT COMPRESSOR MOTOR V BELT DRIVEPKG Flywheel Pulley Nom Max Model T Face RP M T Fac No Section Inside Drive cs Number Dia Width Dia Width Length bhp F 3049 2BE 720 16 1450 5 7 B 97 25 1 64 44348 16 1750 6 5 7 B 97 222 64 20215 F 3049 3BE 950 16 6 1450 1034 6 6 96 50 4 64 44965 16 6 i750 9 6 6 96 39 0 64 20225 F 3049 5BE 1190 16 636 1450 13 6 6 96 624 64 4445 16 6 1750 11 6 6 96 57 0 64 20238 F 3049 7BE 1400 12 6 1450 11 6 6 90 55 7 64 44355 12 6 1750 9 6 6 96 45 0 64 20245 F 3049 9BE 1750 12 6 1450 1436 6 6 90 624 64 44365 12 6 1750 12 6 6 90 612 64 44508 F 3069 5BE 1170 16 6 1450 13 6 6 96 624 64 44445 16 6 1800 10 6 6 96 56 6 64 6128 F 3069 6BE 1305 12 6 1450 10 6 6 c 90 504 64 44378 12 6 1800 9 6 6 90 400 64 20255 F 3069 8BE 1575 12 6 1450 13 6 6 G 624 64 44385 12 6 1800 10 6 6 96 55 0 64 20265 F 3069 9BE
34. E PIN IN THE VALVE PLATE FOR CORRECT POSITION ING This pin prevents the valve from rotating during operation b So that the valve plate with its valve in place may be inverted for assembly to the compressor make two sheet metal clips as shown by Fig 31 Slip the clips through the I D of the valve plate 1809 apart and over the valve so that the springs are compressed and the valve is held in its recess d Place the assembled valve plate in position on the housing with the copper gasket beneath CAUTION Before placing the low lift Ammonia valve plates on the unloading cylinders it will be necessary to make sure the unloading pins are down or in the loaded posit ion One man may accomplish this by removing the unloader cover plate and placing a wooden block between it and the unloader piston Tighten the un loader cover plate bolts until the unloader pins are depressed or in the loaded position If the unloader pins are not depressed damage to the suction valve will result when the suction valve plate bolts are tightened After the suction valve plate bolts are tight be sure to remove the wooden block used to depress the unloader pins This procedure is not necessary on Freon compressors e Tighten the cap screws hand tight and remove the steel clips to allow the suction valve to snap down into posit ion f Tighten the cap screws and assemble the discharge valve cage If it becomes necessary to replace
35. EON AND AMMONIA 3 3 4 X OPERATION AND ADJUSTMENT THE OIL LEVEL IN THE COMPRESSOR IS CORRECT WHEN LIQUID OIL CAN BE SEEN AT THE CENTER OF THE BULLSEYE If the level is checked with the com pressor in operation foam will sometimes exist top of the 011 depending upon the quantity of refrigerant in the crankcase It is always advisable to check the oil level after the compressor has been in oper ation at least 1 2 hour or after the crank case feels warm to the hand The compressor can be operated safely as long as the oil level remains in sight in the bullseye In fact it is not unusual for this level to drop to the bottom of the bullseye or slightly lower especially when first starting up after a prolonged shut down This is due to the accumulated re frigerant being pumped out of the oil When this happens the compressor should be watched carefully to be sure that oil is returning from the evaporator or evaporators and that the crankcase oil level is building up to normal DO NOT OPERATE THE COMPRESSOR CONTINUOUSLY WITH LOW OIL LEVEL CAUTION Do not remove oil from the crankcase because of an apparent high level unless you know that too much oil had pre viously been added If the oil level checked as above is lower than the bottom of the bullseye add oil UNLOADER MECHANISM OPERATION Fig 26 shows the unloader piping for capacity control 011 pressure to operate the capacity unloader mechanism is ta
36. EPI 215 10 225 8 CONTROL OPERATING CONDITIONS TO LIMIT DISCHARGE TEMPERATURE TO 375 F OPERATE SYSTEM TO KEEP REFRIGERANT GAS CLEAN AND TO AVOID LIQUID SLUGGING KEEP SUCTION GAS ABOVE THE TEMPERATURE CORRESPONDING TO THE PRESSURE OPEN COMPRESSOR FOR INSPECTION LEAST ONCE YEARLY YORK CORPORATION 6 YORK PENNA Fig 20 Ammonia Instruction Plate AMMONIA INSTRUCTION PLATE Fig 20 Each of the ammonia compressors is supplied with an instruction plate which is attached to one of the cylinder heads This plate recommends the condensing pressure suction pressure and the corresponding temperatures of the suction gas The maxi mum limit given on this plate insures a compression ratio of 9 5 or less and notes that the maximum discharge temperature is 375 F DIRECTION OF ROTATION The compressor is designed for rotation in either direction Fig 24 shows the position of the crescent for counter clock wise rotation of the shaft when viewed from the pump end The oil flows from right to V W COMPRESSOR UNITS Instruction 3W F FREON AND AMMONIA Page 24 3 3 A X 3 OPERATION AND ADJUSTMENT left If the crankshaft is turned clock ing also supplies oil to the radial grooves wise the crescent automatically rotates to lubricate the shaft thrust surfaces on 1009 and the oil continues to be pumped each end of this bearing An oil line on from right to left the outside of the compressor
37. FREON AND AMMONIA 3 3 A X 3 SERVICE MANUAL Instruction 3W F Page 45 SERVICE Remove the piston with connecting rod assemblies and replace the connecting rod caps to prevent mix up Remove tne pump end bearing head assem bly with oil pump Remove the coupling hub from the shaft Remove the shaft seal assembly Remove the drive end bearing and bearing head Remove the tapered wedge bolt from the top of the center bearing to free the bearing from the crankcase bore Remove the center main bearing dowel pin covered by 1 2 pipe plug from the side of the compressor The center main bearing with the crank shaft must be removed from the compres sor as an assembly It requires two men to move the shaft out of the compressor housing through the pump end Rest the shaft on wood blocks and re move the center bearing from the shaft Examine and clean shaft journals and crank pins Hone where necessary to smooth scratches or scored areas if any Install a new main bearing to center journal on the shaft and replace the shaft with the bearing mounted on the shaft into the compressor With the center bearing and shaft in proper location in the compressor bore and aligned with the dowel pin hole insert the dowel pin and tap lightly Replace the 1 2 plug using litharge to close access hole Replace the main and thrust bearings and pull all cap screws tight Tighten the wedge bolt through the center main bear
38. ND COMPRESSOR END FREON AND AMMONIA le 41 47 ES 6 12 amp 16 CYLINDER DIRECT DRIVE Fig 14 Suggested Location of Vibration Isolator Assemblies SERVICE MANUAL Instruction 3W F Page 16 V W COMPRESSOR UNITS FREON AND AMMONIA 3 3 A X 3 INSTALLATION g Level the unit base by shifting the spring assemblies to auother hole if necessary h After the unit base has been leveled measure the distance from the floor to the bottom of the unit base This distance should be 3 5 8 for each spring If it is less add springs if more remove springs The unit should now be level and the distance from the floor to the unit base should be 3 5 8 at all springs i Remove the shipping studs and nuts and install the mounting washer and cap screw See Fig 13 j The isolator assemblies may be lagged to the floor if desired The application of isolators to the 4 6 and 8 cylinder compressor units is similar to that for the 12 and 16 cylinder except as follows a Only single spring assemblies are used See Fig 12 b Fig 14 should be used to determine the primary location of the spring assem blies c The shipping bolt mounting washer and cap screw must be removed before apply ing these isolators See Fig 12 d After the unit has been raised 6 from the floor the top plate should be bolted to the unit base using the mounting washer and cap scr
39. Pressure Actuated 365 03256 365 03238 065 03233 025 11046 YORK DIVISION BORG WARNER DETAIL OIL PRESSURE REGULATING VALVE Y 53 TYPE OIL PUMP Bearing Main Pump End York Part No 064 00331 2 Pin Roll Main Bearing 029 03989 3 Crank and Pin Oil Pump 364 00325 4 Head Bearing 364 05892 5 Screw Cap Bearing Head 8 Required 021 02751 6 Gasket Bearing Head 028 00824 7 Valve Oil Regulating Complete 364 00329 8 Spring Valve 029 00239 9 Gasket Valve Cap m 028 01256 10 Packing Valve Stem 028 01060 11 Check Ball 029 01853 12 Gasket Valve Body Fibre 028 00852 13 Gasket Valve Body Copper 070 02537 14 Screw Cap Pump Cover 021 01425 15 Gasket Pump Cover 064 20109 16 Ring 028 05163 17 Insert 064 03900 18 Oil Pump Assembly Rotor and Shaft Idler Carrier and Pin Idler and 364 05893 Bushing Cover Spring and Insert Also included are O Ring 16 Gasket 15 and Cap Screws and Lockwashers 19 and 20 19 Screw Cap Socket Head Insert 021 09272 Lockwasher Connector Straight 1 4 SAE X 1 8 MPT 021 05265 023 01304 Crank and Pin Oil Pump 364 00325 Bearing Oil Pump Bearing pin Oil Pump York Part No 064 00322 029 03991 Oil Pump Gasket Oil Pump 064 20109 026 03509 Oil Pump K
40. age 17 INSTALLATION CONNECT TO COMPRESSOR SUCTION ADJUSTING CAM LOW PRESSURE BELLOWS A OIL PRESSURE DIFFERENTIAL SWITCH PRESSURE SWITCH TERMINALS WIRE FOR 115 VOLTS AMMONIA TYPE 275APIONA WIRE FOR 230 VOLTS RESISTORS WIRE TO CONTROL DEVICES RESET BUTTON WIRE TO STARTER HOLDING COIL ADJUSTING NUT D HIGH PRESSURE BELLOWS 8 CONNECT TO OIL PRESSURE GAUGE FREON TYPE 275APIO Fig 16 011 Pressure Failure Switch matically keeps the crankcase filled to the enough to prevent damage to the compressor correct level when starting up Fig 15 shows the arrangement of oil NOTE Where compressors are mounted return using an oil receiver The elevation vibration isolators FLEXIBILITY MUST BE of the oil receiver is important During PROVIDED in the oil line to each crankcase operation the static head plus a small float pressure difference forces oil into the crankcase If the crankcase float should OIL PRESSURE FAILURE SWITCH stick open and the compressor is stopped the pressures will equalize and the oil in The Penn Type 275AP10 Freon oil pressure the crankcase and in the receiver will seek failure switch See Fig 16 operates on the same level This level must be low the difference between suction pressure and SERVICE MANUAL Instruction 3W F Page 18 V W COMPRESSOR UNITS FREON AND AMMONIA 3 3 A X 3 INSTALLATION GAUGE AND LPCONTROL
41. arbon ring and cast iron collar to always be in contact The lapped contact surfaces are separated by a film of oil This oil slightly above crankcase pressure is supplied by the oil SERVICE MANUAL Instruction 3W F Page 38 V W COMPRESSOR UNITS FREON AND AMMONIA 3 3 AX 5 SERVICE BEARING HEAD BEARING S Ve 16 BEARING HEAD O RING COVER PLATE 8 SPRINGS ROLL PIN SHAFT SEAL RING Fig 33 Exploded View of Shaft Seal pump and floods the cavity between the cover plate and bearing head The two rubber 0 rings perform an important function in sealing off possible leak paths along the shaft and through the cover plate so they must be carefully handled and properly applied Seal Leakage The shaft seal cover plate is fitted with an ell to lead any oil which may pass through the seal to a can so as to keep it away from the motor belt wheel The rate of leakage and condition of the oil from the seal drip indicates the effectiveness of the seal In operation the shaft seal surfaces should pass enough oil to assure a film between Five to ten drops per minute oil drip can pass thru either because of too great pressure seal tension or too smooth surfaces the sur faces roughen themselves until an oil film can be retained and then start to wear smooth again the seal has roughened itself the first oil out of the drip may be darker but clear clean oil sho
42. can be turned through a complete revolution NOTE Never use a wrench or any other tool to turn a filter which has becomme plugged Tlie cartridge may be removed from the hous ing and washed in an approved safety solvent Do not try to disassemble the cartridge and exercise care not to damage the cartridge discs or cleaner blades COMPRESSOR OIL LEVEL It is sometimes difficult to check the actual oil level by observation except as below outlined because of the indeterminate amount of refrigerant which may be mixed with the oil The greater the amount of refrigerant in the mixture the higher the apparent oil level will be The amount of refrigerant in the mixture will be greater after a prolonged shut down period There fore a check of the oil level immediately after a prolonged shut down is worthless as far as determining the actual working level is concerned Such a check will generally indicate a level higher than the normal oil level The ideal time for checking the oil level is after a prolonged period of operation because then there will be the least amount of refrigerant mixed with the oil During the period of operation the refrigerant will be pumped out of the oil until only the normal quantity remains in solution The compressor is equipped with a glass bullseye for checking the quantity of oil being located on the pump end of the compressor SERVICE MANUAL Instruction 3W F Page 28 V W COMPRESSOR UNITS FR
43. e Retaining Clip Suction Valve FIG 12 Suction Valve Retaining Clip CENTRAL ICE MACHINE COMPANY Subject to Change Without Notice Printed in U S A Refrigeration Supplies 20 Code S EFG R Int Supersedes Form 180 20 RP Coded 460 TOLLFREE 800 228 7213 146847 V W COMPRESSOR UNITS Form 180 20 N1 e AND 3W F 3 3 4 X 3 Page 1 DESCRIPTION GENERAL PUMP OUT AND BY PASS CONNECTIONS The 3 3 4 X 3 V W compressor units are available for use with remote condensing equipment either water cooled condensers or economizers in capacities ranging from 5 through 195 tons of refrigeration for both single stage and booster applications These units combine vibration free quiet and efficient operation with reduced floor area and head room Static and dynamic balance permits upper floor mount ing without special foundations Fig 2 Six Cylinder Ammonia Compressor Figs 1 through 4 show the general appearance of the compressors used on these units while Figs 5 through 10 show the overall dimensions and connections Fig 1 Four Cylinder Freon Compressor Each standard compressor unit is furnished with a single compressor mounted on a base with belt drive and guard or flexible coupling oil separator for ammonia crankcase heater for Freon oil failure switch stop valves high pressure cutout gauges and gauge board The 3 3 4 X 3 com
44. e proper unloading sequence of the cylinders With the two compressors in parallel a time delay relay should be used to prevent the second compressor from starting until the first compressor has come up to speed The crankcase oil heater used on Freon compressors must be electrically connected so it is energized when the compressor is stopped Two recommended methods are given as follows a For 2 or 3 wire control change the normally open interlock in the compres sor motor starter to normally closed and feed the heater by this N C contact b In case it is too difficult to add the interlock in the field use a normally closed control relay connected in parallel with the starter holding coil so the relay will close when the starter opens Use an Allen Bradley Bulletin 700 Type 01 control relay or equal Testing the Wiring Connections CAUTION After it has been installed the time delay switch should be tested to assure that wiring is properly connected To make this test proceed as follows a Pull the disconnect switch and remove the cover from the control b Connect a jumper between the pressure switch terminals See Fig 16 c Close the disconnect switch and start the compressor The time delay switch should stop the compressor in approxi mately 45 seconds NOTE If the oil pressure failure switch does not stop the compressor check to see if there is a wire connecting T2 to M inside the oil failur
45. e switch If this wire is missing and the switch is wired according to the wiring diagram given in Fig 18 it will be necessary to install one before the oil failure switch can operate d After testing remove the jumper re place the control cover and close the disconnect switch Wait about 5 minutes for the heater to cool and then depress the reset button V BELTS To insure long life and satisfactory operation of the V belts the motor pulley and flywheel must be in exact alignment and belts must be under proper tension a Preparatory to aligning the drive find the magnetic center of the motor This may be done by running the motor idle and measuring from a fixed point on the shaft to some fixed point on the motor frame This distance must be maintained during the procedure of alignment b Loosen up the bolts holding the motor to the c Move the motor on the base forward far enough for the belts to slip over the pulley and flywheel without stretching d Proceed with the alignment keeping in mind that the face of the motor pulley must be parallel with the face of the flywheel that the belt grooves must be in alignment and that the motor must be on its magnetic center To align the belt grooves place a straight edge on the outer face of the flywheel extending over to the far edge of the motor pulley measure the distance from the straight edge to the groove in the flywheel then set the pulley
46. eed 75 HP The 75 HP motors must have ball bear ings f Maximum absolute pressure ratio is limited to 9 5 INITIAL OPERATION Before operating the compressor for the first time a Open the main suction and discharae stop valves and all other system valves except drain and purge valves b Charge a quart of clean York compressor oil into the shaft seal oil space with a hand oil pump connected to the seal oil charging valve shown in Fig 22 c Disconnect the oil pipe on the discharge side of the oil filter and connect a hand oil pump to this pipe Pump oil to flush the bearings while turning the crankshaft by hand d Check the crankcase oil level to see that it is halfway in the crankcase bulls eye e After starting the compressor always make sure the oil pump is functioning properly as shown by the pressure gauge in the oil supply line The oil pressure must be higher than the suc tion pressure by a minimum of 35 to 40 psi on start up at the pump If the oil pressure does not build up screw in the oil pressure regulating valve stem The oil pressure is in creased by screwing in and decreased by screwing out on the stem See Fig 35 NOTE The oil pressure gauge should never show an oil pressure of less than 30 psiq because it takes this much pressure to actuate the unloader pistons f After the first hour of initial opera tion inspect the suction strainer bags If the bags have collected di
47. es Compres sors will be equipped for automatic unload ing only if specified when ordered Tables 5 6 and 8 show the various arrangements of automatic capacity reduct ion the number of steps the number of 501 145 increments in capacity unloader sequence and at the bottom of each table the proper manual unloading sequence These tables should be used with Fig 28 to determine the location of the cylinders to be unloaded Fig 28 shows the proper numbering of the cylinders and cylinder sleeves that are right hand left hand or plain Care must be taken when arranging a compressor for automatic capacity reduction so that the torque of the compressor will remain as smooth as possible Failure to observe the proper sequence of unloading as given in Tables 5 6 7 and 8 reading from left to right may cause rough running of the compressor loss of belt life and possible infractions of power company rules Unloader pistons are located on both ends of the 12 and 16 cylinder compressors Un loader pistons on the 4 6 and 8 cylinder compressors are confined to one end The 16 cylinder compressor is composed of 4 pairs of cylinders on each end Three of these pairs are arranged for capacity reduction For an example of how to use tables 5 6 T or 8 to determine the proper sequence of unloading assume we have a 16 cylinder compressor It has four solenoids two on each end One solenoid on each end controls 2 pairs or
48. ew See Fig 13 e Before lowering the unit place the spring and base plate directly below each top plate Be sure the springs are properly seated when lowering the unit f The distance from the floor to the bottom of the unit base should be 3 5 8 at each spring assembly to obtain the approximate loading of 330 lbs on each spring See Fig 13 REFRIGERANT CONNECTIONS Before shipment from the factory these compressors are given a preliminary test run and charged with the proper amount of oil To insure absolute cleanliness it is important to keep the suction and discharge service valves closed during installation until the final connections have been made Discharge Line Oil Separator On a modern compact compressor such as this the oil capacity of the crankcase is limited and oil must be added frequently to offset that which leaves the compressor and is not returned For this reason it is recommended that a discharge line oil separator an oil receiver and a crankcase float valve be installed With this arrangement oil may be added to the receiver through its charging connection This receiver acts as a reservoir which auto OIL RECEIVER 6 X5 COMPRESSOR 54 X4 COMPRESSOR COMPRESSOR Fig 15 Oil Return Arrangement V W COMPRESSOR UNITS SERVICE MANUAL FREON AND AMMONIA Instruction 3W F 3 3 AX 3 P
49. four cylinders and the other solenoid on each end controls 1 pair of cylinders We want a capacity variation of SERVICE MANUAL Instruction 3W F Page 30 V W COMPRESSOR UNITS FREON AND AMMONIA 3 3 AX 3 OPERATION AND ADJUSTMENT TABLE 5 16 CYLINDER AUTOMATIC UNLOADER SEQUENCE TOTAL POSSIBLE CAPACITY VARIATION FROM 100 TO 25 Number Number 3 Increments in Capacity And unloading Sequence of cylinders steps Brz es ears 50 37 1725 25 1 1 768 1 1 788 1 2 182 4 748 1 2 768 11612 1586 ait 3 768 11 12 150 1 1 182 36 768 9610 11612 15806 2 2 2 2 182 385 2 4 8 182 C 2 EE 11412 15816 2 3 a 11412 15816 2 3 384 768 15 16 11612 SH 2 384 788 11412 15416 2 3 384 788 182 11412 15816 2 l amp e 3 amp h 748 11412 15816 2 3 T amp 8 11412 15816 i 2 H 142 3 amp 4 768 9810 11812 15416 2 4 3 18 12 2 H 7 8 9 162 11 12 15816 2 768 11612 15816 2 4 748 11412 15416 9810 3 728 m 3 i 148 Es 1212 15816 3 3 768 1412 15816 E 3 3 788 15816 11812 3 3 182 11412 15016 e 188 3 3 11412 15816 2 Beh 3 3 788 11812 15816 142 3 4 148 E 1a2 11412 15816 3 78 pui 16 12 3 4 788115416
50. full contact with the cam ring This c n version should only be made in the case of emergency should the proper sleeves not be immediately available At the bottom of Tables 5 6 7 and 8 is found the proper sequence for manually unloading the cylinders To unload open the relief line valves shown in Fig 26 PISTONS AND CONNECTING RODS Install the pistons with connecting rods making sure that they are in the proper cylinders The piston rings must be free in the grooves and ring gaps rotated 1209 from each other to insure best compression and to prevent excessive oil usage Check the wrist pins and the wrist pin locking springs Install all connecting rod caps with nuts finger tight at first then pro ceed to tighten each connecting rod cap separately Match the numbers stamped on the rod and cap Rotate the shaft after each separate connecting rod is tightened to determine if binding occurs SUAFT SEAL The shaft seal is a single spring loaded balanced seal simple in design and using no diaphragms See Figs 33 and 34 A cast iron shaft seal collar with rubber 0 ring is secured to the crank shaft by a steel ball and two locking nuts thereby rotating with the crankshaft A carbon shaft seal ring with rubber O ring loaded by 8 small helical springs is locked to the cover plate by a roll pin therefore this assembly is stationary The lateral movement of the shaft seal ring allows the contact surfaces of the c
51. gnment the smoother the unit will run The Thomas Type AMR is furnished in two sizes 262 AMR with maximum motor half bore of 2 5 8 and 312 AMR with maximum bore of 3 1 8 Fig 19 illustrates the application of this coupling to the 3 3 4 X 3 compressor Note that the 3 8 thick washer is held from turning by a roll pin projecting into the coupling keyway space The following procedure is recommended when installing the Type AMR flexible coupling a Apply the motor half coupling to the motor shaft the coupling is shipped in three parts Be sure the coupling slides freely on the shaft Line the coupling so that it is flush with the end of the shaft key it and lightly tighten the key set screws b Place the compressor half on the shaft key it and apply the 3 8 thick washer and the cap screw with its lockwasher Drive the roll pin into the coupling keyway space d e 9 h G 9 k NOTE Be absolutely certain that there is no dirt on the taper of the shaft or coupling bore Place the motor on the base so that the distance between the couplings is 3 1 2 for the 262 AMR or 4 1 8 for the 312 AMR See Fig 19 If a sleeve bearing motor is being used determine its magnetic center and place the rotor in this position Secure parallel alignment from the face of the compressor half coupling to the face of the motor half coupling by means of
52. haft seal leakage is relatively low Only 10 to 15 drops per day might be observed at the elbow 9 on the face of the cover plate A piece of drain tubing may be attached to the elbow if desired REPLACING THE OIL PUMP The oil pump Fig 35 is designed so that all moving parts are housed in a single unit To replace the oil pump proceed as follows a Pump down the compressor close stop valves and vent crankcase to atmosphere b Remove the oil pump 14 by removing cap screws 15 c Dismantle oil pump assembly using an Allen wrench to back out cap screws 11 Remove in turn the insert rotor idler idler carrier crescent spring and ball Remove the O ring 10 and the drag crank 3 Clean and oil all parts f Renew parts as necessary reversing the above steps Use care not to damage the ring V W COMPRESSOR UNITS FREON AND AMMONIA 3 3 A X 3 SERVICE MANUAL Instruction 3W F Page 43 SERVICE MAIN AND THRUST BEARINGS All main bearings are sleeve type and of aluminum alloy The thrust bearing is designed to take the shaft thrust in both directions Radial oil grooves are milled on both ends for lubricating the thrust surfaces Main Bearing Pump End See Fig 35 The following procedure is recommended when replacing pump end main bearings a b c h Arrange blocking under shaft in crank case Disconnect
53. haft seal collar nut spanner wrench a high pressure cutout oil failure Switch discharge gas thermometer ammonia funnel ring and 3 Allen set screw wrenches The gauge board is shipped in a separate box For removing the crankshaft from either end of the compressor the space needed from the center line of the compressor to the wall is 4 Cylinder 6 amp 8 Cylinder LOCATION The unit should be located in a dry and well lighted room with sufficient space around it to allow room for inspection or service See Table 2 for the overall dim ensions of these units The unit should be located in a space having natural ventilation to dissipate the heat given off by the compressor and motor If sufficient ventilation is not avail able it may be necessary to add forced ventilation to prevent excessive bearing temperatures and over heating of the motor When the compressor unit is to be in stalled in a location where noise is an important factor all primary sources of noise should be eliminated upon installation FOUNDATION AND MOUNTING Ground If the unit is to be located on an earth floor it should be placed on a level concrete slab 6 to 8 thick See Fig 1D floor so that a concrete base can be poured resting on the ground extending 6 to 8 above the basement floor and having suffi cient space on all sides to install cork board See Fig 11 If this method of isolating the compressor unit cannot be u
54. il Pump 15 Oil Pump Cap Screw 9 10 11 124 011 Pump Kit 13 6 14 V W COMPRESSOR UNITS SERVICE MANUAL FREON AND AMMONIA Instruction 3W F 3 3 4 X Page 41 SERVICE SCREW LOCKWASHER IDLER SHAFT IDLER CARRIER SPRING OIL PUMP ASSEMBLY Fig 35 Main Bearing Head and Oil Pump Assembly SERVICE MANUAL Instruction 3W F Page 42 1 1 1 m V W COMPRESSOR UNITS FREON AND AMMONIA 3 3 4 X SERVICE NOTE Even careful examination may fail to detect cuts in the 0 rings so when repairing a shaft seal it is good practice to replace them Be certain at this time that the clear ance on the thrust bearing does not exceed 006 Excessive shaft end play can be responsible for seal failure See CHECKING SHAFT THRUST CLEARANCE Place the 3 1 4 0 0 0 ring 5 in its recess in the shaft seal collar 3 Pull the crankshaft all the way toward the seal end and install the shaft seal collar 3 making sure that it is lock ed to the shaft by the locking ball and its thrust side is bearing against the shoulder of the shaft Apply the ori ginal collar nut and locking nut pull ing them up tight certain the thrust clearance remains the 003 006 originally allowed Push the shaft toward the pump end Place cover plate on a horizontal surface with the spring holes face up Place the 8 springs 7 in their soc
55. inder is unloaded and keeps the lift pin in contact with the cam ring when the cylinder is loaded again This spring is kept in place by a roll pin 10 through the lift pins which also pre vents the pin from rotating so that the beveled end does not get out of contact with the cam Each unloader cylinder sleeve is locked to the housing with a pin 8 to keep it from rotating out of position These cylinder sleeves 11 are fitted with a loose fit so that they may be removed in the field remove these sleeves first remove the unloader piston cover and remove the piston and rod carefully so that the unloader piston under tension from the spring does not fly out Ease out the sleeve When replacing the cylinder sleeve the cam ring 6 must be turned so that its slot is centered under the lift pin at point Fiq 32 Unloader Mechanism Assembly V W COMPRESSOR UNITS FREON AND 3 3 AX 3 SERVICE MANUAL Instruction 3W F Page 37 SERVICE PARTS LIST Fig 32 Unloader Piston Hex Head Cap Screw Push Rod Washer Unloader Device Spring Push Rod Cam Ring Left Hand Cam Ring Right Hand Lift Pin Set of 6 Locating Pin Lift Pin Spring Roll Pin Cylinder Sleeve Bare Cam Ring Support Ring Retaining Ring Locking Pin Unloader Sleeve Assembly L H Unloader Sleeve Assembly R H 0 100980 See Fig 32 locating pin 8 the inside pai
56. ing to expand the bear ing into the housing bore NOTE Connect the oil line to feed center main bearing makinq sure connect ions are tight WARNING When replacing one new main bearing it is important to inspect all main bearings to determine the amount of wear The changing of one main bear ing may require the clianging of all main bearings to maintain accurate shaft alignment Proceed to re install oil pump assembly check the thrust clearance 003 to 006 install the shaft seal assembly and adjust the tension Fig 37 Oil Level Sight Glass PARTS LIST Fig 37 Oil Sight Glass Fibre Gasket 011 Sight Glass Oil Sight Glass Rubber Packing Oil Sight Glass Packing Gland 011 Sight Glass Cap Screw OIL LEVEL SIGHT GLASS Fig 37 The crankcase oil level sight glass is located at the oil pump end of the com pressor to indicate the oil level Correct oil level is half way up the bullseye When installing the sight glass extreme care must be used to center the bulb with a feeler gage and draw the cap screws evenly to prevent undue strain and resulting breakage SERVICE MANUAL Instruction 3W F Page 46 V M COMPRESSOR UNITS FREON AND AMMONIA 3 3 AX 3 SERVICE COMPRESSOR HOUSING PARTS LIST Fig 38 Strainer Screen Strainer Bag Retaining Spring Cover To Stud Gasket Stud Discharge End Cover Gasket Cap Screw Suction End Cover 1 2 3 4 5 6 T
57. it Note parts of y 53 and 49 Oil Pumps are interchangeable except items 2 3 4 and 5 FIG 2 Oil Pump Bearing Head and Pressure Regulating Valve 4 364 05056 York Part No YORK DIVISION BORG WARNER Y 53 SERIES 334 BORE V W OPEN SINGLE STAGE R 12 22 502 717 UNITS FORM 180 20 RP York Paxt No 064 12165 Valve Suction Pin Type Superseded 064 02673 Spring Suction Valve 029 10757 Valve Plate R 12 22 502 064 12179 Valve Plate R 717 064 12178 Screw Cap 021 12445 Lockwasher 021 05269 Valve Assembly Discharge R 717 364 00369 1 Piston Unloader Device 064 00357 2 Screw Cap Push Rod 021 10650 3 Washer Push Rod 064 00356 4 Spring Unloader Device 029 03993 5 Push Rod 364 00353 6 Cam Ring Left Hand 064 00346 Cam Ring Right Hand 064 00347 7 Pin Lift Set of 6 364 06010 8 Spring Lift Pin 029 04021 Valve Assembly Discharge 364 00370 9 Ring Retaining For Lift Pin 029 09016 10 Pin Locating 029 03991 11 Cylinder Sleeve Plain 064 25141 12 Support Cam Ring 064 00348 13 Ring Retaining 029 11357 14 Pin Roll for Retaining Ring 029 03990 6 14 Cylinder Sleeve Assembly 364 00344 Left Hand Cylinder Sleeve Assembly Right Hand FIG 3 Cylinder Sleeve Assemblies 364 00345 R 12 22 502 Valve Cage Discharge 717 064 00371
58. ken from the internal oil header to a three way valve on each unloader cover With the valve in the closed position pump oil pres sure is exerted on the unloader piston See Fig 27 the unloader piston moves the cam ring turns allowing the unloader pins to drop The suction valve drops to Fig 26 Unloader Oil Piping V W COMPRESSOR UNITS FREON AND AMMONIA 3 3 4 X SERVICE MANUAL Instruction 3W F Page 29 OPERATION AND ADJUSTMENT UNLOADER PISTON LOADED POSITION 12 VALOADER Piston nino UNLOADED POSITION Fig 27 Unloader Mechanism its seat and the cylinders are loaded When the three way valve is open back seated oil is relieved to the crankcase and the unloader piston spring returns the valve to the unloaded position During shutdown the cylinders are always unloaded start up oil pressure of 30 psig overcomes the unloader piston spring tension actuating the unloader mechanism so that the cylinders operate under full capacity Automatic Capacity Reduction All compressors are furnished as standard with a hand relief line valve for each pair of unloaded cylinders Where automatic capacity control is required a solenoid valve operated by a temperature or pressure control switch is installed in the oil line before the three way valve When a solenoid valve is used the three way valve must be left closed at all tim
59. kets Place the 4 1 8 0 0 O ring 6 in its recess in the shaft seal ring 4 and place this assembly in the cover plate 1 being cautious not to cut or jam the O ring Be sure that the locking pin in the cover plate enters its proper hole in the shaft seal ring and that the springs are properly seated Depress the shaft seal ring to be sure that it is free to move Place a 1 16 bearing head gasket 8 on the cover plate assembly Make sure the contact surfaces of the shaft seal collar 3 and shaft seal ring 4 are free from all foreign particles Apply oil to these surfaces Assemble the cover plate assembly with gasket in position to the bearing head using the cap screws 2 Draw the bolts up eveniy and tightly After the assembly is complete measure X distance from outside of cover plate to shaft seal ring thru the 9 64 hole in the cover plate using a micrometer depth gauge This dimension should be 612 012 Reconnect the oil lines to the side and top of the cover plate 1 4 Since this is a flooded type seal it will be necessary to fill the seal oil cavity with oil Charge one quart of oil into the seal oil charging valve Be sure all oil line joints are properly made then reassemble the coupling or belt wheel The compressor is now ready for opera tion Keep a close check on the seal for a short period Do not be alarmed if there is no sign of oil drip at all for the s
60. ld only V W COMPRESSOR UNITS SERVICE MANUAL FREON AND AMMONIA Instruction 3W F 3 3 AX 3 Page 19 INSTALLATION SELECTOR FUSED DISCONNECT SWITCH SWITCH X THERMOSTAT CRANKCASE OIL HEATER CUTOUT LP CUTOUT j FREON ONLY OIL PRESSURE DIFFERENTIAL SWITCH TIME DELAY SWITCH STARTER FAILURE SWITCH TRANSFORMER WHEN REQUIRED UNLOADER SOLENOID VALVE IMPORTANT THE JUMPER BETWEEN T2 M ON PRESENT MODEL OIL FAILURE SWITCH 15 OMITTED AND MUST BE INSTALLED IN THE FIELD RESISTORS TIME DELAY 230 V TERMINAL HEATER ELEMENT 1184 TERMINAL STARTER OIL PRESSURE HOLDING DIFFERENTIAL smite TERMINAL TERMINAL TIME DELAY SELECTOR SWITCH SWITCH HAND RESET INTERLOCK CRANKCASE OIL HEATER Fig 18 Suggested Control Wiring Diagram SERVICE MANUAL Instruction 3W F Page 20 V W COMPRESSOR UNITS FREON AND AMMONIA 3 3 4 X 3 INSTALLATION No 262 4 47 No ale DISCS COMPRESSOR HUB SET SCREWS OTOR HUB ROLL PIN FILL PIECE Fig 19 Flexible Coupling Type AMR FLEXIBLE COUPLING When these compressors are direct con nected to a synchronous motor or other prime mover a flexible coupling is used The coupling is flexible but this does not mean that its alignment is negligible in fact the better the initial ali
61. le spring loaded balanced seal simple in design and using no diaphragms Cast iron seal collar with carbon seal ring Bearings Sleeve type load and thrust bearings of aluminum alloy Lubrication All bearing surfaces and the shaft seal are pressure lubricated by a geared pump equipped with an external disc type oil filter in pump discharge a pres sure gauge and a regulating valve Suction Strainers Strainers the bodies of which are recessed in the compressor housing are equipped with two thicknesses of 35 mesh wire screen Each strainer is lined at the factory with a cloth bag This cloth bag is used to protect the compressor V W COMPRESSOR UNITS FREON AND AMMONIA 3 3 4 X 3 SERVICE MANUAL Instruction 3W F Page 3 SPECIFICATIONS on initial start up It is then removed and retained for future use after piping changes or additions Crankcase Oil Heater Freon Only An insert type 300 watt crankcase oil heater complete with junction box and cover is furnished installed on each compressor The connection is 3 4 pipe thread and the steel sheath is approximately 12 long Available for either 110 or 220 volts Pressure Relief Valve Standard spring loaded ball check type which allows 915 charge gas to escape into suction gas 5 ages These valves are set to open at 250 psi differential Oil Level Indicator Oil sight glasses are installed so that the oil level may be readily observed Capacit
62. move the suction end strainer cover located on the pump end of the compressor removing this cover the cloth bag can be removed without disturbing the strainer screen The cloth bag is held in place by a re taining spring Remove the retaining spring and the cloth bag If the cloth bag contains dirt replace or clean it with an approved safety solvent inspect it for holes and place it in the suction strainer again When the bag is found to be free of dirt remove it and the retaining spring Re place the suction end strainer cover Re tain the bag for future use NOTE Before turning the job over to the customer examine the metallic screen to see if it needs cleaning 12 amp 16 Cylinder Compressors To remove the cloth bags from these compressors it will be necessary to first remove the suction strainers See STRAINER SCREEN under MAINTENANCE AND SERVICE After the strainer assemblies have been removed the procedure for removing the cloth bag is the same as described for the 4 6 and 8 cylin der compressors THIS COMPRESSOR IS PRECISION BUILT THE FOLLOWING INSTRUCTIONS SHOULD BE OBSERVED TO GET BEST RESULTS IN OPERATION AND MAIN TENANCE 1 RANGE PRESSURE BETWEEN SUCTION AND DISCHARGE SHOULD BE HELD TO THE FOLLOWING COND PRESS MIN SUCT PRESS CORRES POUNDS GAUGE POUNDS GAUGE TEMP F 115 2 31 125 28 135 3 E 145 23 155 SE 21 165 19 175 17 185 15 195 13 205
63. n the outside diameter of the idler and the inside diameter of the rotor is sealed by a crescent shaped projection cast integrally with the idler carrier As the idler teeth come out of mesh with the rotor teeth increase in volume creates a partial vacuum 011 rushes into the pump to fill this vacuum and occupies the voids between the idler and the rotor teeth When the teeth mesh the oil is forced from these spaces and out the discharge side of the pump Fig 35 shows a sectional view of the pump end of the compressor CRANKCASE OIL HEATER See Fig 24 On Freon compressors a concentration of Freon collects in the crankcase during shutdown and on start up this Freon leaves the crankcase taking with it a large volume of oil many cases the loss of oil is so great that the oil pump loses its prime and cannot pump sufficient pres sure in an allowable time for the oil pressure failure switch to cut in There fore the compressor shuts down shortly after start up The purpose of the crank case oil heater is to prevent this This heater will be in operation when the compressor is shut down The continual heat in the compressor crankcase will pre vent Freon accumulation there and eliminate any problem of compressor shut down due to high Freon concentration in the oil The insert type 300 watt crankcase oil heater has a watt density of 14 watts per Sq in Therefore there is no chance for oil carburization on the 12
64. nd Unloader Designations V W COMPRESSOR UNITS FREON AND AMMONIA 3 3 A X 3 SERVICE MANUAL Instruction 3W F Page 33 OPERATION AND ADJUSTMENT closed time delay switch is energized the oil pressure does not build up to 18 psig above the suction pressure in 90 seconds the time delay switch trips to stop the compressor The compressor cannot be restarted until the reset button on the control is manually reset NOTE Wait 5 minutes for the heater to cool before de pressing the reset button If If the oil pressure rises to above 18 psig differential in approximately 90 seconds after the compressor starts the time delay heater element is automatically de energized and the compressor continues to operate normally If the oil pressure should drop below 10 psig differential during the running cycle the time delay heater element is energized and unless oil pressure returns to 10 psig differential within approximately 90 seconds the compressor will be shut down Time Delay The time delay device is a trip free bimetal manual reset type wired as an integral part of the oil failure Switch It is factory adjusted for approxi mately 90 seconds and should not be changed in the field This unit is completely compensated to assure uniform timing under all ambient temperatures Timing is affected only by variations in voltage The time delay resistors in the oil failure switch are the same for either 115V or 230V A C or D
65. nd refer to Fig 38 and proceed as follows a Pump out the compressor b Remove the suction end strainer cover 9 c Remove the discharge end cover nut cover 6 and cover to stud gasket 4 V W COMPRESSOR UNITS SERVICE MANUAL FREON AND AMMONIA Instruction 3W F 3 3 4 X Page 47 SERVICE CAUTION The cover to stud gasket 4 MANUFACTURING TOLERANCES must be removed before the strainer is pulled through the compressor housing 1 d Diam Top or it may be lost inside the compressor Bottom 3 745 001 suction compartment Wrist Pin Hole 1 0000 0003 d The strainer screen can now be removed 0000 from the suction end of the compressor housing Cyl Diam 3 7500 0005 e Upon reassembly insert the strainer screen the suction end of the compressor housing after it appears at the discharge end attach the cover to stud gasket 4 discharge end strainer cover 6 and the cover nut Wrist Pin Diam f Bolt both end strainer covers 6 and 9 gt Wrist Pin Hole 1 0005 0003 to the compressor housing 0000 Crank End Hole 2 3760 0005 CRANKCASE FLOAT VALVE 0000 8 Crank End Width 87450 0005 An installed view of the crankcase float valve is shown by Fig 39 Seal End 6 Center 3 2500 0005 Pump End 2 6270 0005 E Crank Pin 2 3750 0005 8 amp 4 Cyl 1 763 002 Between 0512 Cyl
66. nternal machined parts of the compres sor such as valves pistons shaft seal crankshaft etc must be immediately protected from the compressor Coat the parts with oil and wrap them in clean paper CYLINDER HEADS When dismantling a compressor notice should be taken of the cylinder heads be fore they are removed from the housing Before removing the heads it would be well to mark each one and its position on the housing Also certain heads are equip ped with relief valves and these heads must be replaced correctly so that the relief qas passage will line up between the head gasket and housing These pressure relief valves are spring loaded ball check type which allows the discharge gas to escape back to the suction These valves are set to open at 250 psi differential When reassembling a head be sure to line it up with manifold first and bolt it SERVICE MANUAL Instruction 3W F Page 34 V W COMPRESSOR UNITS FREON AND AMMONIA 3 3 4 X 3 SERVICE snugly before bolting the head to the compressor housing To simplify stocking of renewal parts only the head gasket with the relief port is available It may be used for plain heads as well as those with the relief valve DISCHARGE VALVE ASSEMBLY Fig 29 The discharge valve assembly has a ring plate type discharge valve 9 of stainless steel with a cast iron valve cage 6 The valve is pinned by two hardened guide pins 11 on the inside diameter to preven
67. ntrolled by One Solenoid SERVICE MANUAL Instruction 3W F Page 32 V W COMPRESSOR UNITS FREON AND AMMONIA 3 3 4 X 3 OPERATION AND ADJUSTMENT from 100 to 25 in four steps or incre ments in capacity of 75 to 50 to 37 1 2 to 25 Looking at table 5 we find with four steps and four solenoids at 75 city the control device thermostatic or suction pressure should actuate the open ing of the solenoid controlling the unloading of cylinders 3 amp 4 and 7 amp 8 shown in Fig 28 For further reduction to 50 capacity the solenoid controlling cylinders 11 6 12 and 15 6 16 should be energized At 37 1 2 capacity reduction the solenoid controlling cylinders 1 amp 2 should be energized and at 25 capacity reduction the solenoid controlling cylinders 9 amp 10 should be energized When the load increases the cylinders will be put back into operation in the reverse order of the unloading sequence OIL PRESSURE FAILURE SWITCH The Penn Type 275AP10 oil pressure fail ure switch see Fig 16 is an oil pressure differential switch plus a time delay switch It operates on the difference between the suction pressure and oil pressure When the compressor is started the normally 4 CYLINDER CYLINDERS HAVING A PLAIN SLEEVE ARE ALWAYS LOADED SEAL END I2 CYLINDER 6 CYLINDER OIL PUMP END PLAN VIEWS 8 CYLINDER 16 CYLINDER Fig 28 Method of Numbering Cylinders a
68. ompressors All compressors have hand hole covers adapted for use of these floats Oil Receiver Available when required Automatic Capacity Reduction Solenoid valves necessary tubing and fittings are available to give automatic control of capacity reduction The solenoid valves may be operated by either a thermostat or suction pressure control Gas and Oil Equalizing Connections All compressors have cover plates tapped for use of equalizing connections Vibration Isolators Vibration isolator springs are available for upper floor mounting or any other mounting where vib ration must be kept to a minimum Pumpout and Bypass Connections Necessary valves fittings and pipe for cross connect ions are available when ordered Board With L P Cutout Made for 4 1 2 suction and discharge pressure gauges and high and low pressure cutouts Gauges and low pressure cutout included with board Motors and Starters Motors and starters are available when ordered SERVICE MANUAL Instruction 3W F V W COMPRESSOR UNITS FREON AND AMMONIA Page 4 3 3 AX 3 PHYSICAL DATA TABLE 1 COMPRESSOR DATA DIRECT OR BELT DRIVEN COMPRESSOR 4 Oyl 6 Cyl 8 Cyl 12 Cyl 16 Cyl Cylinders Bore 334 324 334 334 324 Stroke 3 3 Es E Es No Compression Rings 2 2 2 2 2 Pistons No Vent Oil Rings l 1 T 1 1 Pin Diameter AN 1 gr Pin Length 24 224 234 234 234 Val
69. on the motor shaft so that the distance from the straight edge to the groove is the same as the distance from the straight edge to the groove in the flywheel With this distance fixed Grive the key into the motor pulley and SERVICE MANUAL Instruction 3W F Page 22 V W COMPRESSOR UNITS FREON AND AMMONIA 3 3 4 X INSTALLATION tighten up the set screw on the key e Then by means of the slotted holes for adjustment on the motor base move the motor back until the belts are reason ably tight To have the proper tension a belt should have about one inch sag when applying thumb pressure half way between the pulley and the flywheel When this condition is obtained tighten the bolts holding the motor to the base SYSTEM EVACUATING TESTING AND CHARGING To evacuate a new system condenser evaporator and pipe connections prepara tory to testing and charging we recommend tlie use of a vacuum pump not use a new compressor for evacuating purposes For evacuating testing charging of these systems refer to Instructions 2A 2D and 20 1 LIMITATIONS a Minimum compressor speed is 600 rpm b Maximum compressor speed is 1800 rpm for Freon 1200 rpm for ammonia c Operating differential must never ex ceed 225 psi The standard internal relief valves are set to relieve dis charge to suction at 250 psi differen tial d Maximum discharge temperature is 3759L e Belt drives are not to exc
70. pressor units are made in 4 6 and 8 cylinder sizes for the V Belt Crive and 4 6 8 12 16 cylinder sizes for direct drive Fig 3 Six Cylinder Freon Compressor CENTRAL ICE MACHINE COMPANY Refrigeration Supplies TOLLFREE 800 228 7213 SERVICE MANUAL Instruction 3W F Page 2 V W COMPRESOR UNITS FREON AND AMMONIA 3 3 4 X 3 DESCRIPTION NOMENCLATURE Ammonia or Freon 3 Stroke No of Cylinders Le Style RPM Designation Direct Drive Economizer or Remote Condenser Application 12 9 5 DE Fig 4 Sixteen Cylinder Freon Compressor SPECIFICATIONS STANDARD COMPRESSOR UNIT Housing Close grained iron casting Contains cylinders crankcase suction strainers and relief valves equipped with hand hole plates and oil sight glass movable cast alloy iron sleeves are fitted into the cylinders Integrally cast water passages in ammonia housing to keep working parts of compressor cool Pistons Cast iron plug type pistons with chrome plated compression rings and venti lated oil rings Suction and Discharge Valves Ring plate type of stainless steel with cast iron re taining plate Connecting Rods Aluminum alloy with rein forced crank pin end Produced by full permanent mold process Drilled for oil distribution to the piston pins Crankshaft Cast iron counter weighted and balanced to minimize vibration Shaft Seal Sing
71. r of unloading cylinders on the 8 and 16 cylinder compressors and the This pin is opposite the The exception to this is one pair on the four cylinder Locate the slot below point B for these locations Before replacing the unloader piston plate push in on the unloader piston with the hand and observe both cylinders to see that the unloader mechanism is working properly It must be noted that the unloaders are designated as either right or left hand R H or L H stamped on cam ring Actually all parts of the unloader device are inter changeable with the exception of the cam rings which have the cams sloped in opposite directions The hand is determined by the position of the unloader rod in respect to the cylinders when one is looking from the end of the compressor facing the unloader piston When the unloaders are to the left of the cylinder they are designated as left hand and those with the unloaders to the right are designated as right hand Fig 20 shows the method of numbering the cylinders and determining right or left hand unloader mechanisms In ordering re placement parts it is necessary to designate the cylinder numbers with left or right hand unloader mechanism You will note that the only difference between the L H and sleeve assemblies is the eam ring 6 It is important how ever when converting a L H to a R H or vice versa the lift pins must be rotated 1809 so that the beveled ends will make
72. rt they should be replaced or cleaned and put back inside the strainer screens g Periodically inspect the strainer bags for the next ten hours during which time the compressor must be operating at full load conditions The number of inspect ions during these ten hours will depend upon the amount of dirt collected at each inspection When the bags are found to be free from dirt they may be removed from the strainer screens See SUCTION STRAINERS CAUTION Hasty removal of the cloth bag is not recommended nor should the baq be allowed to remain in the strainer indefinitely Capacity tests can not be run until the bags have been removed V W COMPRESSOR UNITS FREON AND AMMONIA 3 3 4 X 3 SERVICE MANUAL Instruction 3W F Page 23 OPERATION AND ADJUSTMENT SUCTION STRAINERS These compressors are equipped with suction strainers as follows 4 Cylinder one strainer 6 amp Cylinders two strainers 12 16 Cylinders four strainers The strainers the bodies of which are in recesses in the compressor housing are equipped with tw thicknesses of 35 mesh wire screen Each of these strainers is fitted at the factory with a cloth bag as an added precaution to entrap dirt and other fine particles of foreiqn matter which may be swept into the compressor with the suc tion gas See Fig 38 REMOVING THE STRAINER CLOTH BAG See Fig 30 4 6 amp 8 Cylinder Compressors After the compressor has been pumped out re
73. sed place the unit on a level concrete slab 6 to 8 thick and the use of spring type isolators are recommended See Fig 1D Upper Floor For upper floor mounting spring type isolators are available when ordered Fig 12 shows the three spring assembly used for the 12 and 16 cylinder units and the single spring assembly used for 4 6 and 8 cylinder units Do not use corkboard under these units The standard location for the isolator assemblies is shown by Fig 14 These locations are satisfactory for most install ations but on occasion it may be necessary to move the assemblies to compensate for heavier or lighter loads at the motor end All compressor unit bases have additional holes drilled at the factory to allow re locating the isolator assemblies e CONCRETE BASE CONCRETE BASE Fig 11 Suggested Compressor Unit Foundation SERVICE MANUAL Instruction 3W F Page 14 V W COMPRESSOR UNITS FREON AND AMMONIA 3 3 4 X INSTALLATION Fig 12 Vibration Isolator Assemblies Holes are provided in the bottom plate of the isolator assemblies to bolt them to the floor if desired Each isolator spring is designed to carry 330 lbs when compressed to a working length of 2 13 16 Since it is not known what weight motor will be used the maximum number of springs that should be required are furnished when ordered On some installations not all springs will be required Fig 1
74. t rotation and rests on six springs 10 which are seated in the valve cage The discharge valve bolt 13 and self lockinq nut 15 hold this entire assembly intact so that it is easily assembled to the top of the suction valve plate The correct lift of the valve is insured in the design of the cage Each cage is stamped with the letter A or F Ammonia or Freon Cap screw 7 with washer 8 bolts the discharge valve assembly in place on the compressor suction valve plate Fig 30 shows the correct position for the valve cage assemblies when mounted on the suction valve plates The four 915 charge ports must be oriented so that their center lines will be 45 from the horizontal This will mean the discharge valve guide pins being in a line perpendicular to the wrist pins and the crankshaft resulting in the least amount of wear SUCTION VALVE ASSEMBLY Fig 29 The suction valve assembly consists of a ring plate type valve 1 of stainless steel six suction valve springs 2 cast iron valve plate 3 and the cap screws 4 and washers 5 The correct lift of the valve is insured in the design of the valve plate Each valve plate is stamped with the letter A or F Ammonia or Freon a For assembly place the valve plate less discharge valve cage bottom up insert the six valve springs in the recesses in the plate and place the ring plate valve on the springs NOTCH IN THE VALVE MUST CORRESPOND TO THE GUID
75. the oil lines at the oil pump end Remove the oil pump assembly and the bearing head with the bearing in place Remove the sleeve bearing from the bearing head Clean all parts with approved safety solvent Blow out oil ways with dry air or nitrogen NOTE Do not use linty rags for ing parts Install a new bearing into the bearing head and reassemble to the compressor Pin 2 keeps bearing from turning Inspect the oil pump assembly and assem ble it to the compressor Connect up the oil piping and remove the blocking under shaft Thrust Bearing Seal End See Fig 34 a b Remove the flywheel or coupling hub Remove the shaft seal assembly and the shaft seal collar lock nuts from the shaft Remove the shaft seal collar making sure the steel ball for locking the seal collar to the shaft is not lost or misplaced See Replacing Shaft Seal for procedure to remove the seal collar 9 d Support the shaft with blocks inside the crankcase and remove the bearing To do this remove the six cap screws from the thrust bearing 12 and use these screws in the tapped holes in the bearing to jack it out This will force the seal collar loose Use care not to lose the locking ball 0 In jacking off the seal collar take up the slack and then tap the end of the shaft Repeat until the seal collar may be pulled off not force the jack screws which would pull the whole Shaft
76. uld come out after about 2 days running If the oil continues to appear dark then the seal is being scored either by grit or scale or a crack on the collar surface is shaving the carbon ring Unless this stops within a week r 10 days and drip returns to normal the seal will have to be replaced or re paired before failure occurs compressor in automatic operation any compressor on starting may leak up to 20 drops of oil per minute during the first minute of running but should reduce to tightness and normal oil drip in a short time The seal should not be condemned for this action it is caused by falling pres sure and formation of gas in the oil chamber of the seal PARTS LIST Fig 34 Cover Plate Hex Head Cap Screws Shaft Seal Collar Shaft Seal Ring 0 Ring 3 1 4 0 D 0 Ring 4 1 8 0 D Helical Spring Bearing Head Gasket 1 16 Locking Ball Locking Nuts Roll Pin Thrust Bearing Cap Screws Washers V W COMPRESSOR UNITS FREON AND AMMONIA 3 3 4 X SERVICE MANUAL Instruction 3W F Page 39 SERVICE If the leakage is normal with the com pressor running there should be no leakage during shutdown Liquid in the crankcase oil will cause excessive boiling and foaming on falling pressure The oil in the seal chamber may foam out faster than it can be replaced causing dry surfaces and carbonizing of the oil on them If they are not scored too severely the surfaces will clean themsel
77. usings with the bulb type oil sight glass are not available When a replacement compressor housing is ordered cover plate with sight glass assembly York Part No 364 18963 must be ordered also TABLE 4 CAPACITY CONTROL VALVES NEW STYLE SINGLE PIECE WITHOUT MANUAL FEATURE No York Part No 1 Valve Capacity Control Suction Pressure Actuated 365 13975 C 001 2 Valve Capacity Control Temperature Actuated 365 13975 C 003 3 Gasket O Ring Valve to Coverplate 028 043754 Gasket O Ring Plunger 028 05175 5 Ring Retaining Capacity Control Valve to Coverplate 029 08659 6 Power Assembly Suction Pressure Actuated 1025 09980 7 Power Assembly Temperature Actuated 025 09981 8 Screw for Item 6 2 Required 021 01435 9 Screw for Item 7 2 Required 021 01447 10 Washer Flat for Item 8 and Item 9 2 Each Required 064 06648 Type Power Assembly Capacity Control Complete with Cover plate with Sight Glass u 367 39035 D 002 367 39035 D 001 367 38892 D 001 Suction Pressure Temperature Actuated Actuated None 367 39035 D 004 None 367 39035 D 004 367 39035 D 003 367 39035 D 003 367 38892 D 002 Valve Capacity Control 2 Step 4 amp 6 Cylinder Compressors Valve Capacity Control 6 Step 8 12 amp 16 Cylinder Compressors Gasket Valve Body to Cover Plate Valve Capacity Control Regulating Power Assembly Remote Suction
78. ven cloth bag is installed in each suction strainer of every new compressor as an added precaution to prevent dirt from reaching the moving parts NOTE These bags are not designed for permanent system cleaning and must be removed after the initial operating period Therefore do not depend on the cloth hags to do a permanent cleaning job The system must be cleaned before operation The system into which one of these compressor units is to be installed must be designed to prevent heavy or prolonged liquid slop over back to the compressor Other precautions which must be observed in installing these compressor units may be found in Instruction 2D GENERAL INSTRUCT IONS FREON SYSTEMS or 2A AMMONIA SYSTEMS INSPECTION As soon as it is received the unit should be inspected for any damage done in transit If damage is evident it should be noted on the carrier s freight bill A separate request for inspection by the carrier s agent should be made in writing V W COMPRESSOR UNITS FREON AND AMMONIA SERVICE MANUAL Instruction 3W F 3 3 4 X 3 Page 13 INSTALLATION at once See Instruction 2F Basement Remove a portion of the basement HANDLING All of the units are shipped on skids which should not be removed until the apparatus has been placed in its approxi mate location Care must be taken not to damage the external oil piping on the compressor when moving the unit Shipped in a carton attached to the skid are a s
79. ves of the carbon and wear to tightness again The shaft seal is a flooded type seal therefore it is necessary to have the shaft seal oil space completely filled with oil This is automatically accomplished during continuous or intermittent operation but during prolonged shut down periods it will be necessary to insure a flooded seal before start up Seasonal operated compressors should be watched carefully for shaft seal leakage during shutdown An empty quart can should 1 27 2 ANS OIL TO BEARING OILFROM SEAL CAVITY CAP SCREWS 2 LOCKWASHER 2 CAP SCREW 3 RING 4600 0 RING LOCKING NUTS 9 ROLL PIN LOCKING BALL 9 SHAFT SEAL RING A SHAFT SEAL COLLAR 3 THRUST BEARING BEARING HEAD GASKET 8 Fig 94 Sectional View of Shaft Seal g SERVICE MANUAL Instruction 3W F Page 40 SERVICE be placed under the seal drain tube during the off season Before the compressor is started for its normal running period the can should be checked to determine the amount of seal leakage An equal quantity of clean oil should be charged into the shaft seal by a hand oil pump attached to the oil charging valve Replacing Shaft Seal If the leakage of the seal is excessive the seal should be replaced To replace the shaft seal proceed as follows a Pump down the compressor close stop valves vent crankcase to atmosphere
80. ves per Suction 1 1 1 1 1 Cylinder Discharge 1 1 1 1 1 Connecting to Crank and 10 10 10 10 10 Rods Wrist Pin Crankshaft Number of Bearings 2 2 2 3 3 Size of Seal End 3 4 x3 34 x3 31473 Center Bearing aves ideis 314 X43 314x434 Bearings Pump End 206 324 294 3 254x814 2 X3X 256 X314 Crank Diameter 23 234 234 296 294 Pin Length 69 2 35 278 3 Shaft Keyway Width i M ye Depth EN EN 4 X X Oil Charge Gallons 4 5 5 12 12 TABLE 2 UNIT DATA DIRECT OR BELT DRIVEN PIPING OVERALL MAX OPERATING UNIT CONNECTIONS DIMENSIONS WEIGHT epee Suction Length UMBER Suction 2 Freon NH Discharge With Motor Width Height No Motor Pounds 3049 2BE Ze 215 2 69 391 401g 1600 3049 3BE 21 25 69 3914 4614 1600 3049 4BE 215 25 69 3912 4614 1600 3049 5BE 3 2 69 4014 4614 1600 3049 5DE 2 754 3014 4811066 1500 3069 3 3 2 T6 4396 4915 1750 3069 4BE 3 210 76 43946 4912 1750 3069 5BE EN 2 76 43 6 4918 1750 3069 5DE 4 2 82546 3436 524 1640 3089 4BE 4 3 3 76 45 4816 1850 3089 5BE 4 3 76 45 4816 1850 3089 5DE 4 8 8746 3414 DEN 1740 3129 3DE 5 4 Two 215 10494 38 5814 3280 3129 5DE 5 Two 215 1054 38 5814 3280 3169 5DE 6 Two 3 10546 3834 5714 3480 Direct drive V W COMPRESSOR UNITS FREON AND AMMONIA SERVIC
81. y Reducers Capacity reducers in cluding steel tubing orifices and hand operated stop valves are incorporated as standard When so specified the compressor is fitted with solenoid valves to allow for automatic capacity reduction Thermometers Ammonia Only A thermometer is furnished for insertion into the dis charge manifold thermometer well is provided at the suction connection on 4 6 and 8 cylinder sizes Controls and Gauge Board A high pressure cutout is furnished with each compressor for remote mounting Also a gauge board with high and low pressure gauges is furnished with each compressor Compressor Connections Hand wheel type suction and discharge stop valves and weld ing flanges for connecting into system are mounted on the ammonia compressors Freon compressors have seal cap valves Drive Either V belt drive or flexible coupling for direct drive Steel Base or Soleplate Structural steel base with motor rails and belt guard or soleplate with bolts and dowel pins for mounting on concrete foundation Oil Failure Switch Pressure differential manual reset type which responds to pres sure difference between oil pressure and suction pressure Stops motor on reduced oil pressure ACCESSORIES Discharge Line Oil Separator Freon Only Separaters are furnished complete with float Furnished as standard for ammonia Crankcase Oil Level Float Floats to be used with parallel operation of c

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