York YK Series - Default Chapter; Table of Contents

To Next Page

To Previous Page

JOHNSON CONTROLS

FORM 160.76-O1

ISSUE DATE: 6/15/2015

TABLE OF CONTENTS

SECTION 1 - DESCRIPTION OF SYSTEM AND FUNDAMENTALS OF OPERATION .......................................... 7

System Operation Description .........................................................................................................................7

Capacity Control ............................................................................................................................................... 7

SECTION 2 - SYSTEM OPERATING PROCEDURES .............................................................................................9

Oil Heaters .......................................................................................................................................................9

Oil Heater Operation ........................................................................................................................................9

Checking The Oil Level In The

Oil Reservoir .....................................................................................................................................................9

Start-Up Procedure ..........................................................................................................................................9

Start-Up ............................................................................................................................................................9

Chiller Operation ............................................................................................................................................ 11

Condenser Water Temperature

Control ............................................................................................................................................................ 11

Operating Log Sheet ...................................................................................................................................... 11

Operating Inspections ....................................................................................................................................12

Need For Maintenance Or Service ................................................................................................................. 13

Stopping The System .....................................................................................................................................13

Prolonged Shutdown ......................................................................................................................................13

SECTION 3 - SYSTEM COMPONENTS DESCRIPTION .......................................................................................15

General ...........................................................................................................................................................15

Compressor .................................................................................................................................................... 15

Capacity Control ............................................................................................................................................. 15

Compressor Lubrication System ...................................................................................................................15

Oil Pump .........................................................................................................................................................15

Oil Heater .......................................................................................................................................................19

Motor Driveline ...............................................................................................................................................19

Heat Exchangers ............................................................................................................................................ 19

Refrigerant Flow Control ................................................................................................................................19

Optional Service Isolation Valves ................................................................................................................... 20

Optional Hot Gas Bypass ...............................................................................................................................20

Optiview Control Center .................................................................................................................................20

Solid State Starter (Optional) .........................................................................................................................20

Variable Speed Drive (Optional) ..................................................................................................................... 20

SECTION 4 - OPERATIONAL MAINTENANCE ..................................................................................................... 21

Oil Return System ..........................................................................................................................................21

Changing The Dehydrator ..............................................................................................................................21

The Oil Charge ...............................................................................................................................................22

Oil Charging Procedure .................................................................................................................................. 22

SECTION 5 - TROUBLESHOOTING ......................................................................................................................23

SECTION 6 - MAINTENANCE ................................................................................................................................25

Renewal Parts ................................................................................................................................................25

Checking System For Leaks ..........................................................................................................................25

Conducting R-134a Pressure Test..................................................................................................................25