Sealed System Repair Procedures - Sub-Zero 700-3 BASE Technical & Service Manual

Integrated
700-2 SERIES SEALED SYSTEM REPAIR PROCEDURES
.
Problem
Non-Operating, Inefficient,
Noisy Compressor
High Side leak
Low Side Leak
Contaminated Sealed System
Examples:
> Burned out compressor
> Excessive moisture from
leak in condensate loop or in
low side
> Plugged capillary tube
Restriction
NOTE: If restriction is due to
sealed system being contami-
nated, see Contaminated
Sealed System above.
Overcharge
3 Series
(700- BASE)
a. Capture refrigerant
b. Replace Compressor
c. Replace filter-drier
d. Evacuate or sweep charge system
e. Recharge system with Virgin 134a refrigerant.
NOTE: To check for a non-operating compressor, a hard start kit can be used.
a. Capture refrigerant.
b. Repair leak.
c. Replace filter-drier.
d. Evacuate or sweep charge system.
e. Recharge system with Virgin 134a refrigerant.
a. Capture refrigerant.
b. Repair leak (if at solder joint) or replace part.
c. Back flush high side of sealed system.
d. If all refrigerant has escaped & system is in vacuum, replace compressor
e. Replace filter-drier.
f. Evacuate or sweep charge system.
g. Recharge system with Virgin 134a refrigerant.
a. Capture refrigerant.
b. Repair leak (if at solder joint) or replace part.
c. Back flush high side of sealed system.
d. Replace compressor.
e. Replace filter-drier.
f. Replace heat exchanger if cap tube is clogged.
g. Install a low side drier on suction line.
h. Evacuate or sweep charge sealed system.
i. Recharge with Virgin 134a refrigerant.
a. Capture refrigerant.
b. Locate and remove restriction or locate and replace part.
c. Back flush high side of sealed system.
d. Replace filter-drier.
e. Evacuate or sweep charge system.
f Recharge system with Virgin 134a refrigerant.
a. Capture refrigerant.
b. Replace filter-drier.
c. Evacuate or sweep charge system.
d. Recharge system with Virgin 134a refrigerant.
4-3
Sealed System Information
Service Procedures
#3758424 - Revision B - December, 2005