York YDHA-73 - User Manual

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

Summary

IMPORTANT SAFETY GUIDELINES

GENERAL SAFETY GUIDELINES

Outlines critical safety precautions for operating and servicing the equipment.

SAFETY SYMBOLS

Explains hazard warning symbols used throughout the document.

SECTION 2 COMPRESSOR SERVICE

SERVICE GUIDELINES

Presents best practices for compressor disassembly and reassembly.

CLEANING AND CHECKING WEARING PARTS

RIGGING THE COMPRESSOR OR MOTOR

MOTOR REMOVAL AND REPLACEMENT

Close-Coupled Models

Procedure for removing motors from close-coupled compressors.

Open-Drive Models

Procedure for removing motors from open-drive compressors.

SHAFT SEALS

Removal (Cartridge Type Seal)

Steps for removing the cartridge-type shaft seal.

Installation (Cartridge Type Seal)

Steps for installing the cartridge-type shaft seal.

BELLOWS TYPE SEALS

Seal Removal (Bellows Type)

Instructions for removing bellows-type shaft seals.

Seal Installation (Bellows Type)

Instructions for installing bellows-type shaft seals.

ROTOR SUPPORT DISASSEMBLY

Removing the Rotor Supports from Rotor Scroll

IMPELLER REMOVAL

Impeller Sizes 46 and Larger

BALANCE PISTON SEAL AND DIFFUSER PLATE

REMOVING BALANCE PISTON SEAL AND DIFFUSER PLATE

DISASSEMBLY OF ROTOR SCROLL

REMOVING THE NOZZLE BASE PLATE

REMOVING THE IMPELLER EYE SEAL

RE-ASSEMBLY OF THE EYE SEAL

HA, HB, HD Style Compressors

HF Style Compressors

RE-ASSEMBLY OF NOZZLE BASE PLATE

REMOVING THE PRE-ROTATION VANE HOUSING

PRE-ROTATION VANE ASSEMBLY

Individual vane removal

REPLACING CONTROL SHAFT ASSEMBLY

OIL PUMP SERVICE

REMOVING OIL PUMP FROM THE OIL SUMP

DISASSEMBLING THE OIL PUMP

REMOVING THE DRIVE GEAR

REASSEMBLING OIL PUMP ASSEMBLY INTO OIL SUMP

York YDHA-73 Specifications

General

Brand	York
Model	YDHA-73
Category	Air Compressor
Language	English