Table Of Contents - Johnson Controls YORK YK Style G OPTIVIEW Operation And Maintenance

Centrifugal liquid chillers, r-134a, with control center for electro-mechanical starter, solid state starter and variable speed drive

Table of Contents

FORM 160.75-O1 (211)

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

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

Capacity Control ............................................................................................................................................... 8

SECTION 2 - SYSTEM OPERATING PROCEDURES ........................................................................................... 11

Oil Heaters ..................................................................................................................................................... 11

Oil Heater Operation ...................................................................................................................................... 11

Checking The Oil Level In The Oil Reservoir ................................................................................................. 11

Start-Up Procedure ........................................................................................................................................ 11

Start-Up .......................................................................................................................................................... 11

Chiller Operation ............................................................................................................................................ 13

Condenser Water Temperature Control .......................................................................................................... 13

Operating Log Sheet ...................................................................................................................................... 13

Operating Inspections .................................................................................................................................... 13

Need For Maintenance Or Service ................................................................................................................. 15

Stopping The System ..................................................................................................................................... 15

Prolonged Shutdown ...................................................................................................................................... 15

SECTION 3 - SYSTEM COMPONENTS DESCRIPTION .......................................................................................17

General ........................................................................................................................................................... 17

Compressor .................................................................................................................................................... 17

Capacity Control ............................................................................................................................................. 17

Compressor Lubrication System ................................................................................................................... 17

Oil Pump ......................................................................................................................................................... 17

Oil Heater ....................................................................................................................................................... 21

Motor Driveline ............................................................................................................................................... 21

Heat Exchangers ............................................................................................................................................ 21

Refrigerant Flow Control ................................................................................................................................ 22

Optional Service Isolation Valves ................................................................................................................... 22

Optional Hot Gas Bypass ............................................................................................................................... 22

OptiView Control Center ................................................................................................................................. 22

Solid State Starter (Optional) ......................................................................................................................... 22

Variable Speed Drive (Optional) ..................................................................................................................... 22

SECTION 4 - OPERATIONAL MAINTENANCE .....................................................................................................23

Oil Return System .......................................................................................................................................... 23

Changing The Dehydrator .............................................................................................................................. 23

The Oil Charge ............................................................................................................................................... 24

Oil Charging Procedure .................................................................................................................................. 24

SECTION 5 - TROUBLESHOOTING ......................................................................................................................25

SECTION 6 - MAINTENANCE ................................................................................................................................27

Renewal Parts ................................................................................................................................................ 27

Checking System For Leaks .......................................................................................................................... 27

Conducting R-22 Pressure Test...................................................................................................................... 27

Vacuum Testing .............................................................................................................................................. 28

Vacuum Dehydration ...................................................................................................................................... 29

Operation ........................................................................................................................................................ 29

Refrigerant Charging ...................................................................................................................................... 29

Checking The Refrigerant Charge During Unit Shutdown .............................................................................. 30

Handling Refrigerant For Dismantling And Repairs ........................................................................................ 30

JOHNSON CONTROLS