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Residential Refrigeration
and Front Venting Commercial Refrigeration
Service Manual
Air Flow Obstructions
The unit must have free air flow to front grille to
operate properly.
Restricted air flow results in high head pressures
and reduction in efficiency due to longer run times.
Proper air flow through condenser and evaporator is
necessary for efficient operation.
•
Never obstruct air flow in and out of the
machine compartment.
•
The front grille must be free from
obstructions, dust, and debris.
•
Never obstruct air flow to Evaporator Fan.
•
Make sure higher temperature ambient air from
another unit is not directed to condenser coil
(i.e. another heat source directly across from
the unit).
Clean Condenser Coil
ELECTROCUTION HAZARD!! Never attempt
to repair or perform maintenance on the unit
until the Main electrical power has been dis-
connected.
Perlick’s warranty does not cover cleaning of con-
denser.
The condenser is located directly behind the front
grille. See Figure 7-11 through Figure 7-13.
Figure 7-12. Remove Front Grille
Figure 7-13. Clean Condenser Coils
Condenser coils that are covered with dust and de-
bris restrict air flow. This results in high head pres
-
sures and lower efficiency due to longer run times.
Use soft brush and vacuum to clean coil every 90
days, or more often if conditions require.
Ambient Temperature
High ambient temperature and high humidity condi-
tions may result in performance issues and/or refrig-
eration system failure.
The unit must be protected from precipitation.
Do not subject to direct solar load.
Under extreme temperature and/or relative humidity
conditions the front face, gasket and/or glass door
may show signs of condensation. When temperature
and/or relative humidity conditions return to normal
condensation will disappear.
Refrigeration System Repair Instructions
Page 7-7
Figure 7-11. Check for Obstructions
