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#7040748 - Revision A - September, 2016
MODEL UW-24
MODEL UW-24
Sealed System Information
WINE STORAGE 134a SEALED SYSTEM REPAIR PROCEDURES
Service Procedures
a.
Capture refrigerant
b.
Replace Compressor
c.
Replace filter-drier
d.
Evacuate or sweep charge system
NOTE:
If evacuating the sealed system, you must evacuate from both the low & high sides, due
to the refrigerant valves. If sweep charging the sealed system, you must energize the refrigerant
valve during the sweeping procedure. (See Manual Valve Activation Mode in Section 3)
e.
Recharge system with Virgin 134a refrigerant
a.
Capture refrigerant
b.
Repair leak
c.
Replace filter-drier
d.
Evacuate or sweep charge system
NOTE:
If evacuating the sealed system, you must evacuate from both the low & high sides, due
to the refrigerant valves. If sweep charging the sealed system, you must energize the refrigerant
valve during the sweeping procedure. (See Manual Valve Activation Mode in Section 3)
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
NOTE:
If evacuating the sealed system, you must evacuate from both the low & high sides, due
to the refrigerant valves. If sweep charging the sealed system, you must energize the refrigerant
valve during the sweeping procedure. (See Manual Valve Activation Mode in Section 3)
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
NOTE:
If evacuating the sealed system, you must evacuate from both the low & high sides, due
to the refrigerant valves. If sweep charging the sealed system, you must energize the refrigerant
valve during the sweeping procedure. (See Manual Valve Activation Mode in Section 3)
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
NOTE:
If evacuating the sealed system, you must evacuate from both the low & high sides, due
to the refrigerant valves. If sweep charging the sealed system, you must energize the refrigerant
valve during the sweeping procedure. (See Manual Valve Activation Mode in Section 3)
f
Recharge system with Virgin 134a refrigerant.
a.
Capture refrigerant
b.
Replace filter-drier
c.
Evacuate or sweep charge system
NOTE:
If evacuating the sealed system, you must evacuate from both the low & high sides, due
to the refrigerant valves. If sweep charging the sealed system, you must energize the refrigerant
valve during the sweeping procedure. (See Manual Valve Activation Mode in Section 3)
d.
Recharge system with Virgin 134a refrigerant
.
Problem
Non-Operating, Inefficient,
Noisy Compressor
(
NOTE
: To check for a non-
operating compressor, a hard
start kit can be used)
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
