Residential Refrigeration
and Front Venting Commercial Refrigeration Service Manual
Table of Contents
1.0
GENERAL INFORMATION ................................................................................ 1-1
Use of Service Manual .................................................................................... 1-1
Model Families .............................................................................................. 1-1
2.0
SAFETY INFORMATION ................................................................................... 2-1
Refrigerant HFC-134a ..................................................................................... 2-1
Potential Problems with HFC-134a ................................................................... 2-1
Service Manual Safety Labels ...........................................................................2-1
3.0
TROUBLESHOOTING GUIDE ............................................................................ 3-1
Refrigeration System ...................................................................................... 3-1
Electrical System ............................................................................................ 3-4
Doors, Drawers, and Shelving ......................................................................... 3-9
Beverage Dispensing ...................................................................................... 3-10
VARIABLE SPEED COMPRESSOR SPECIFICATION .......................................... 4-1
COMPRESSOR INVERTER OPERATION ........................................................... 5-1
Compressor Start-Up ........................................................................................ 5-1
Normal Operation ............................................................................................. 5-1
TROUBLESHOOTING COMPRESSOR INVERTER .............................................. 7-1
REFRIGERATION SYSTEM REPAIR INSTRUCTIONS ........................................ 7-1
Air Infiltration ............................................................................................... 7-1
System Operating Pressures .......................................................................... 7-3
7.2.1
Process Tubes and Access Valve ...................................................................... 7-4
Remove Evaporator Fan Panel ....................................................................... 7-4
De-Ice Blocked Evaporator Coil .................................................................... 7-5
Evaporator Airflow by Model ......................................................................... 7-6
Air Flow Obstructions ................................................................................... 7-7
Clean Condenser Coil ................................................................................... 7-7
Ambient Temperature .................................................................................. 7-7
Compressors ............................................................................................... 7-8
Replace Condenser. Fan Motor ...................................................................... 7-9
Replace Evaporator Fan Motor ...................................................................... 7-9
Replace Compressor .................................................................................... 7-10
Leak Detection ............................................................................................ 7-10
Recharge Procedure .................................................................................... 7-10
Replace compressor starting device ............................................................. 7-11
Beverage Dispensing ................................................................................... 7-12
C0
2
gauge pressure, temperature and carbonation level reference chart .......... 7-12
Calculate ideal gague pressure of straight CO
2
............................................... 7-13
Beer Dispensing Cleaning ............................................................................ 7-13
7.20 Refrigeration System Diagrams ..................................................................... 7-15
Table of Contents
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