York YDHA-90 - 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

General Safety Guidelines

Safety Symbols

Explains hazard warning symbols used in the document.

Motor Removal and Replacement

Close-Coupled Models

Open-Drive Models

Shaft Seals

Removal (Cartridge Type Seal)

Instructions for removing the cartridge type shaft seal.

Installation (Cartridge Type Seal)

Instructions for installing the cartridge type shaft seal.

Bellows Type Seals

Seal Removal (Bellows Type)

Steps for removing the bellows type shaft seal.

Seal Installation (Bellows Type)

Steps for installing the bellows type shaft seal.

Removing the Impeller

Removing Balance Piston Seal and Diffuser Plate

Removing Front Low-Speed Bearings

Removing Front High-Speed Bearings

Rear Low-Speed Bearing

Removal

Installation

Rear High-Speed Bearing Components

Component Removal

Rear High-Speed Bearings Installation

G and H Compressor Design Levels

Installing Front High-Speed Bearings

Installing Balance Piston and Diffuser Plate

Installing the Impeller

Impeller Sizes 46 & Larger

Replacing Control Shaft Assembly

Oil Pump Service

Removing Oil Pump From the Oil Sump

Steps to remove the oil pump from the oil sump.

Disassembling the Oil Pump

Reassembly of Oil Pump

Reassembling Oil Pump Assembly Into Oil Sump

York YDHA-90 Specifications

General

Brand	York
Model	YDHA-90
Category	Air Compressor
Language	English