York R-134a - Page 6

JOHNSON CONTROLS
6
FORM 160.76-O1
ISSUE DATE: 05/22/2019
LIST OF FIGURES
LIST OF TABLES
TABLE OF CONTENTS (CONT'D)
FIGURE 1 - Compressor Pre-rotation Vanes ............................................................................................................7
FIGURE 2 - Refrigerant Flow-Thru Chiller (Falling Film Evaporator) .......................................................................8
FIGURE 3 - Oil Level Indicator ................................................................................................................................9
FIGURE 4 - Liquid Chiller Log Sheets .................................................................................................................... 11
FIGURE 5 - System Components Front View ........................................................................................................14
FIGURE 6 - System Components Rear View .........................................................................................................15
FIGURE 7 - Schematic Drawing – (YK) Compressor Lubrication System ..............................................................16
FIGURE 8 - Oil Return System ............................................................................................................................... 19
FIGURE 9 - Charging Oil Reservoir With Oil ..........................................................................................................20
FIGURE 10 - Parts Navigator .................................................................................................................................23
FIGURE 11 - Evacuation Of Chiller ........................................................................................................................23
FIGURE 12 - Saturation Curve ............................................................................................................................... 26
FIGURE 13 - Diagram, Megging Motor Windings ...................................................................................................26
FIGURE 14 - Motor Starter Temperature And Insulation Resistances .................................................................... 27
TABLE 1 - Operation Analysis Chart ......................................................................................................................21
TABLE 2 - System Pressures ................................................................................................................................. 24
TABLE 3 - Guide to Motor Greasing and Shaft Rotation Intervals .........................................................................32
TABLE 4 - SI Metric Conversion .............................................................................................................................37
Vacuum Dehydration ...................................................................................................................................... 25
Operation ........................................................................................................................................................25
Refrigerant Charging ......................................................................................................................................26
Checking The Refrigerant Charge During Unit Shutdown ..............................................................................26
Handling Refrigerant For Dismantling And Repairs ........................................................................................28
Megging The Motor .........................................................................................................................................28
Compressor .................................................................................................................................................... 30
Electrical Controls ..........................................................................................................................................30
SECTION 7 - PREVENTIVE MAINTENANCE ....................................................................................................31
Compressor .................................................................................................................................................... 31
Compressor Motor ..........................................................................................................................................31
Greased Bearings .........................................................................................................................................31
Motor Re-lubrication Instruction .....................................................................................................................32
Leak Testing ...................................................................................................................................................34
Evaporator And Condenser ............................................................................................................................34
Oil Return System ..........................................................................................................................................35
Electrical Controls ..........................................................................................................................................35