Perlick HA24BB Service Manual page 31

Residential Refrigeration
and Front Venting Commercial Refrigeration
Service Manual
STEP 3.
Disconnect evaporator fan wire leads from main
wiring harness.
STEP 4.
Evaporator fan motor can now be replaced. Evapo-
rator fan motor should only be replaced with Perlick
OEM parts.
STEP 5.
Reverse steps in Section 7.3 to close the
evaporator fan panel.
NOTE: Ensure airflow is in the correct direc-
tion (see section 7.5).
Replace Compressor
To gain access to compressor, remove the rear
equipment compartment cover from the back of the
cabinet.
Compressor should only be replaced with Perlick
OEM parts.
Always replace drier when replacing compressor.
Compressor and drier connections should never be
de-soldered as this can cause contamination issues
to move in the system. Always cut tubing using nor-
mal refrigeration servicing practices.
Leak Detection
If during a check of operating system pressures, it
is determined that refrigerant level is low, you must
perform a leak test.
• Do not recharge a system without first deter-
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• Placing a system that has lost refrigerant
• The use of an electronic leak detector is
• If the entire charge has leaked out of the unit,
• Be certain to check all brazed connections
• Note: Never try and add or remove refrigerant
STEP 1.
Check that the system been properly installed,
pressure tested, and evacuated.
STEP 2.
Condenser and evaporator must be clean. Evapo-
rator fan and condenser fan blades must be able to
move the correct amount of air.
STEP 3.
Before installing gauges, vent hoses and manifold
with refrigerant type used in unit. This avoids in-
troduction of air into system.
STEP 4.
Use process tubes and Schrader valves. See
Section 7.2.1.
STEP 5.
Charge weightl is listed on unit information plate.
See Figure 1-1.
Refrigeration System Repair Instructions
mining where original refrigerant charge
exited the sealed system!
under a vacuum without first repairing the
leak will draw contaminants into the system
through the point of leak. Find source of the
leak and correct it!
highly encouraged.
the sealed system should be pressurized with
200 lbs. of dry nitrogen and tracer refriger-
ant. Then use an electronic leak detector or
a soap and water solution to pinpoint the
location of the leak. Never use soap and water
solution on a system that is in a vacuum.
thoroughly for leaks. Look for spots where
the sealed system components might have
been worn through by structural or cabinet
components. Additionally, look for oil that
has leaked from the system to determine the
location of a leak.
from the system. These products are critically
charged and must have an ID plate quantity
charge injected to run properly.
Recharge Procedure
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