York YDHF-39 Manual
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York YDHF-39 Manual

York YDHF-39 Manual

Centrifugal compressors used with york model yk centrifugal liquid chillers
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SERVICE INSTRUCTION
YDHA-50W & LHA-50W
YDHB-57, LHB-57, HA-57
(Also see NOMENCLATURE, page 5)
Supersedes: 160.49-M1 (1292)
USED WITH YORK MODEL YK
CENTRIFUGAL LIQUID CHILLERS
COMPRESSOR
MODEL
YDHF-39
YDHF-40
YDHF-42
YDHF-44
YDHA-36 & LHA-36
YDHA-41 & LHA-41
YDHA-46 & LHA-46
YDHA-50N & LHA-50N
YDHB-61
YDHD-46
YDHD-50N & 50W
YDHD-57
YDHD-59
YDHD-61
YDHA-65 & LHA-65
YDHA-73 & LHA-73
YDHA-81 & LHA-81
YDHA-90 & LHA-90
CENTRIFUGAL COMPRESSORS
COMPRESSOR
CODE
P1
P2
P3
P4
G3
G4
H0
H1
H1
H2
H3
H4
H5
H6
H7
H8
J1
J2
J3
J4
Form 160.49-M1 (601)
26439A

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Summary of Contents for York YDHF-39

  • Page 1 CENTRIFUGAL COMPRESSORS SERVICE INSTRUCTION Supersedes: 160.49-M1 (1292) Form 160.49-M1 (601) USED WITH YORK MODEL YK CENTRIFUGAL LIQUID CHILLERS COMPRESSOR COMPRESSOR MODEL CODE YDHF-39 YDHF-40 YDHF-42 YDHF-44 YDHA-36 & LHA-36 YDHA-41 & LHA-41 YDHA-46 & LHA-46 YDHA-50N & LHA-50N YDHA-50W & LHA-50W...
  • Page 2 YORK INTERNATIONAL...
  • Page 3 WARNING indicates a potentially NOTE is used to highlight additional hazardous situation which, if not information which may be helpful to avoided, could result in death or seri- you. ous injury. YORK INTERNATIONAL...

  • Page 4: Table Of Contents

    Re-Assembly Of Oil Pump ................39 Re-Assembly Of Oil Pump Into Oil Sump ............42 REFERENCE LITERATURE Installation – Unit 160.49-N1 Operation – Unit 160.49-O1 Renewal Parts – Unit 160.49-RP1 Renewal Parts – Compressor 160.49-RP2 Coupling Assembly 160.49-N4 YORK INTERNATIONAL...

  • Page 5: Section 1 General

    GENERAL DESCRIPTION The insert type journal bearings are fabricated of alu- minum alloy and are precision bored and axially grooved. These compressors are applied to YORK Model YK Thrust bearings are of the deflection-pad type design. Centrifugal Liquid Chillers. The specially engineered, single helical gears with...

  • Page 6: Section 2 Compressor Service

    Do Not Mix Cap Screws and Washers – Cap screws are suited to the location in which they are used. Too It is also available from YORK (Part No. 364-21508) in long or too short a cap screw can result in leakage 2 oz.

  • Page 7: Rigging The Compressor Or Motor

    Unless otherwise specified, all screws must be tightened to the 3/8" torque values at left with lightly oiled threads: 1/2" 5/8" 200** ** Lubricated with oil and graphite on male and female threads and 3/4" under bolt heads. Molykote not acceptable. YORK INTERNATIONAL...

  • Page 8: Special Tools

    GUIDE PIN .375 - 16 064-18716 SCREW CAP HEX .500 - 20 021-10832 STUD SPL .500 - 20 064-14500 SCREW CAP HEX .500 - 20 021-14162 LD06977 FIG. 6 – USE OF COMPRESSOR TOOLS (-39, -40, -42, -44) YORK INTERNATIONAL...
  • Page 9 GUIDE PIN 064-46499 PINION TOOL 064-48028 (Mod. 65 & 73) HOOK TOOL 064-46610 PINION TOOL 064-48029 (Mod. 50 & 57) GUIDE PIN 064-18716 PIPE 023-15508 STUD 064-14500 LD04753 FIG. 8 – USE OF COMPRESSOR TOOLS (-64, -73, -81, -90) YORK INTERNATIONAL...
  • Page 10 021-07703 BOLT EYE 5/16" 021-12420 WASHER PLAIN 15/16" 021-05158 WASHER PLAIN 11/32" 021-05166 BOLT EYE 3/8" 021-13498 PIN GUIDE 1/4-20UNC 064-46499 WASHER PLAIN 13/32" 021-05167 LD04749 FIG. 10 – USE OF COMPRESSOR TOOLS (-46, -50, -57, -59, -61) YORK INTERNATIONAL...
  • Page 11 PIN GUIDE 064-46499 TOOL SPECIAL 064-48133 HOOK TOOL 064-46610 SEAL O-RING 7/16" 028-12551 PIN GUIDE 3/8" 064-18716 ADAPTER 36-41 IMP 064-48282 STUD SPECIAL .500 064-14500 PULLER TOOL 36-44 IMP 064-48281 LD04651 FIG. 12 – USE OF COMPRESSOR TOOLS (-41) YORK INTERNATIONAL...
  • Page 12 NUT HEX 1/4" 021-00451 TOOL SPECIAL 064-48133 PIN GUIDE 1/4" 064-46499 SEAL O-RING 7/16" 028-12551 HOOK TOOL 064-46610 ADAPTER IMPR 064-48318 PIN GUIDE 3/8" 064-18716 *I* PULLER TOOL 064-48342 LD04752 FIG. 14 – USE OF COMPRESSOR TOOLS (-61) YORK INTERNATIONAL...

  • Page 13: Motor Removal & Replacement

    REMOVAL (MOTOR ONLY) The following paragraphs outline the procedure for re- placing or servicing the motor. Always contact the near- LD04754 est YORK District Service Office when replacing or FIG. 16 – INTERNAL COUPLING GUARD servicing the motor. Close-Coupled Models 1.

  • Page 14: Shaft Seal

    Fasten with cap screws, washers, and CARBON SEAL hex nuts. CARTRIDGE DRAIN TUBE ASSEMBLY 3. Assemble the coupling. Refer to Form 160.49-N4. (STATIONARY) 4. Re-assemble the coupling guard. 26439A FIG. 19 – CARTRIDGE TYPE SHAFT SEAL CROSS SECTION YORK INTERNATIONAL...
  • Page 15 Use care so that the carbon seal is not damaged. 5. Re-install the sleeve and secure it with the snap ring. 6. Re-connect the oil drain line and re-install the com- pressor coupling if no further service is planned. 26350A FIG. 22 – SEAL PLATE YORK INTERNATIONAL...
  • Page 16 4. Remove the flat head screws and re-attach the re- ing Parts”, page 6. Discard all O-rings and replace taining clips in the Installation position. with new. O-RING SHAFT SEAL LD04759 FIG. 24 – BELLOWS TYPE SHAFT SEAL YORK INTERNATIONAL...

  • Page 17: Disassembly Of Rotor Support

    FORM 160.49-M1 3. Thoroughly lubricate shaft with clean YORK re- 4. Taking care that the motor is properly supported, frigerant oil prior to installation. For HD and HF remove the bolts that hold the motor to the motor compressors, proceed to Step 6.
  • Page 18 BALANCE PISTON RETAINER SOCKET HEAD CAP SCREWS (3) IMPELLER CAP SCREWS (3 OR 6) IMPELLER CLAMPING COLLAR HIGH-SPEED SHAFT BALANCE PISTON SEAL COIL SPRINGS (8) 26439A FIG. 26 – IMPELLER AND BALANCE PISTON (IMPELLER SIZES 46 AND LARGER) YORK INTERNATIONAL...
  • Page 19 Low Speed Axial Thrust (Design 0.011" to 0.019") IMPELLER IMPELLER CLAMPING COLLAR CAP SCREW “O” RING 00588VIP DETAIL C – CHECKING AXIAL THRUST O-RING 26439A FIG. 27 – CHECKING IMPELLER TOLERANCES FIG. 29 – IMPELLER MOUNTING (IMPELLER SIZES 36 & 41) YORK INTERNATIONAL...

  • Page 20: Removing Balance Piston Seal & Diffuser Plate

    (16) coil springs. On the HF style to 0.020") compressor the balance piston seal d. Low Speed Axial Thrust (Design 0.011" uses a flat spring washer in place of to 0.019") the coil springs. (See Fig. 35 - HF style Balance Piston Seal Assembly) YORK INTERNATIONAL...
  • Page 21 FIG. 32 – BALANCE PISTON SEAL FIG. 33 – BALANCE PISTON SEAL (DISASSEMBLED) TAPPED HOLES DIFFUSER PLATE RETAINER PLATE BALANCE FLAT SPRING PISTON SEAL WASHER 00589VIP 26665A FIG. 34 – REMOVING DIFFUSER PLATE FIG. 35 – HF BALANCE PISTON SEAL ASSEMBLY YORK INTERNATIONAL...

  • Page 22: Removing Front Low-Speed Bearings

    THRUST COLLAR LOW-SPEED THRUST BEARING LOW-SPEED SHAFT LOW-SPEED THRUST FRONT LOW-SPEED BEARING BEARING (INSIDE 26439A SURFACE, MAY BE FIG. 36 – FRONT BEARING COMPONENTS FURNISHED WITH 4 OR 6 PADS) 26334A FIG. 38 – LOW-SPEED THRUST BEARING REMOVED YORK INTERNATIONAL...
  • Page 23 LOW-SPEED THRUST BEARING (INSIDE SURFACE) LD04836 FIG. 43 – FRONT HIGH-SPEED BEARING REMOVAL 26332A FIG. 40 – LOW-SPEED THRUST COLLAR REMOVED 26329A FIG. 44 – ALL FRONT END BEARING REMOVED LD04837 FIG. 41 – FRONT LOW-SPEED BEARING REMOVAL YORK INTERNATIONAL...

  • Page 24: Removing Bearing Housing & Gears

    Wearing Parts”, page 6. Replace with new bearing if necessary. EYEBOLTS DOWEL PINS LOCATED UNDER 1/2" CAP SCREWS GUIDE PINS DOWEL PINS EYEBOLT 26329A FIG. 45 – REMOVING BEARING HOUSING 00590VIP FIG. 46 – HF BEARING HOUSING DOWEL PINS YORK INTERNATIONAL...
  • Page 25 REAR LOW SPEED BEARING 29370AE 29439A CARTRIDGE TYPE SEAL BELLOWS TYPE SEAL PULLER HOLES RETAINER CLIP & SCREW PULLER HOLE BEARING RETAINER CLIP 26326A 26323A FIG. 47 – REAR LOW-SPEED BEARING LD04838 FIG. 48 – LOW-SPEED REAR BEARING REMOVAL YORK INTERNATIONAL...

  • Page 26: Rear High-Speed Bearing Components

    Mount a dial indicator as shown in Fig. 51 and ro- 26662A tate the compressor shaft to record run-out. Maxi- mum run-out is .001". FIG. 50 – HIGH-SPEED REVERSE THRUST BEARING YORK INTERNATIONAL...
  • Page 27 LD04839 FIG. 52 – GEAR LOCKING PULLER HOLES HIGH-SPEED (1/4") FORWARD THRUST BEARING HIGH-SPEED THRUST COLLAR RETAINER CLIP WITH SCREW INSIDE SURFACE 26336A FIG. 56 – REAR HIGH-SPEED JOURNAL BEARING 26339A FIG. 53 – HIGH-SPEED THRUST COLLAR REMOVED YORK INTERNATIONAL...
  • Page 28 HD AND HF COMPRESSORS To remove/replace any of the components shown in Fig. 59, proceed as follows: 1. Remove the Proximity Probe or Pressure Switch assembly. 00281VIP FIG. 59 – HIGH-SPEED BEARING COMPONENTS - REAR (HD & HF COMPRESSORS) YORK INTERNATIONAL...
  • Page 29 Install re- verse thrust bearing using a new o-ring. Be sure oil passages in the bearing line up with the oil passages in the compressor casing. 00591VIP FIG. 60 – HF PROXIMITY SWITCH YORK INTERNATIONAL...

  • Page 30: Installing Gears

    Maximum run-out should not exceed .001" T.I.R. If run-out exceeds .001"T.I.R. DO NOT proceed with further assembly; contact the YORK Factory Service Department for assistance. 7. Re-install the shaft locking tool.

  • Page 31: Installing Balance Piston & Diffuser Plate

    2. Apply a light coating of oil and Molykote to the in- side diameter of the balance piston seal. 3. Install impeller and clamping collar on high-speed shaft. 4. Torque cap screw to 90 ft. lbs. LD05188 FIG. 62 – IMPELLER MOUNTING SCREWS TIGHTENING SEQUENCE YORK INTERNATIONAL...

  • Page 32: Disassembly Of Rotor Scroll

    3. It will be necessary to turn the nozzle base plate over to remove the impeller eye seal components. 3. Remove all other external piping from the rotor scroll. NOZZLE BASE PLATE IMPELLER EYE SEAL ROTOR SCROLL HOUSING PRE-ROTATION VANE (PRV) HOUSING 26439A3 FIG. 63 – ROTOR SCROLL YORK INTERNATIONAL...

  • Page 33: Removing The Impeller Eye Seal

    ROLL PIN pated on these compressors, proceed to “Removing the Pre-Rotation Vane Housing” on page 35. Otherwise, pro- HELICAL EYE SEAL SPRINGS ceed with re-assembly of the compres- RETAINER sor as follows. FIG. 66 – EYE SEAL COMPONENTS 26301A YORK INTERNATIONAL...

  • Page 34: Re-Assembly Of Eye Seal

    Check that seal ring is free to “float”. FLAT SPRING WASHER IMPELLER IMPELLER EYE EYE SEAL SEAL RETAINER CLEARANCE HOLES FOR JACKING SCREWS 00592VIP 26301A FIG. 68 – SCROLL HOUSING READY FOR FIG. 67 – HF EYE SEAL RE-ASSEMBLY TO MOTOR SUPPORT YORK INTERNATIONAL...

  • Page 35: Removing The Pre-Rotation Vane Housing

    Ring, Driving Washer Vane Stud, Ball Retainer Screw – 12 pt. Arm, Vane Screw – Hex HD Spacer, Arm Nut, Self-Locking 00593VIP Washer Housing FIG. 69 – REMOVING HF PRV SUPPORT PLATE FIG. 71 – PRE-ROTATION VANE HOUSING ASSEMBLY YORK INTERNATIONAL...
  • Page 36 3. The PRV vanes are actuated by a rotating vane plate together in reverse order. Torque all screws in drive ring through individual vane arms to each vane. accordance with Table 4. 21501 (7, 12)* FIG. 72 – PRE-ROTATION VANE ASSEMBLY YORK INTERNATIONAL...

  • Page 37: Replacing Control Shaft Assembly

    A friction-produc- through the hole in the external lever and control ing compound (Thread Locker 242, YORK Part No. shaft, and screw the stud into the internal lever. Be 013-01678) is used on the threads when the stops are sure to put a nut on the outside end of the special initially positioned to prevent any change in position.

  • Page 38: Section 3 Oil Pump Service

    19. Connect the linkage to the external lever. trol shaft (“O” rings and neoprene sleeve) and the inside of the cover plate with YORK Valve Stem When connecting the vane linkage to the electric motor, Lubricant. DO NOT lubricate the tapered surfaces rotate the motor shaft to the closed position and con- of the shaft.

  • Page 39: Disassembling The Oil Pump

    Before disassembling the pump, notice vent, using great care to eliminate all dirt. Lubricate the location of the match marks on the all parts with clean YORK refrigerant oil. To reas- pump cover and housing. The match semble, proceed as follows: marks must line up when reassembling 2.
  • Page 40 ITEM DESCRIPTION QTY. OIL PUMP WITH MOTOR HEATER SENSOR, TEMP. VALVE, RELIEF VALVE, STOP ANGLE, 3/8" BOX, ELECTRICAL COVER, ELECTRICAL BOX SIGHTGLASS GASKET, COVER PLATE LD05199 VALVE, STOP ANGLE, 1/4" HEATER LD05200 FIG. 76 – OIL RESERVOIR ASSEMBLY YORK INTERNATIONAL...
  • Page 41 DETAIL “B” SHAFT DRIVE GEAR DRIVEN GEAR (REMOVED) INNER PUMP GEAR PULLER (10 – 24 UNC x 1-1/2" LG. SCREW) (PULL GEAR WITH SCREW) 15763 SEAL ASSEMBLY 15759 DRIVE GEAR FIG. 77 – REMOVING THE DRIVE GEAR (REMOVED) YORK INTERNATIONAL...

  • Page 42: Re-Assembly Of Oil Pump Into Oil Sump

    4. Charge oil into oil sump. See “Operating Instruc- 1. Replace oil sump cover gasket with a new one. tions”, Form 160.49-O1. Be sure oil is compatible Lubricate gasket with YORK refrigerant oil and with refrigerant being used. graphite. 5. Make sure there are no leaks around the cover and 2.
  • Page 43 FORM 160.49-M1 NOTES YORK INTERNATIONAL...
  • Page 44 P.O. Box 1592, York, Pennsylvania USA 17405-1592 Tele. 800-861-1001 Subject to change without notice. Printed in USA Copyright © by York International Corporation 2001 www.york.com ALL RIGHTS RESERVED Form 160.49-M1 (601) Supersedes: 160.49-M1 (1292)

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