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STEP 1.
Door Gaskets
STEP 2.
Sealing Compound
Residential Refrigeration
and Front Venting Commercial Refrigeration
Service Manual
6.0
Troubleshooting Compressor Inverter
•
Ensure the inverter has
120V applied to the two pin connector on the inverter. If no power,
check where power is interrupted.
•
If temperature control is calling for cooling, check inverter signal circuit for 120V, typically
the red lead. If no power, check where power is interrupted. If there is power, disconnect
power to the entire unit and wait 5 minutes to ensure internal system pressures are
equalized. Plug in unit and feel top of compressor to see if it is trying to start (see in
-
formation from section Compressor Start-Up above). If compressor is trying to start, but
unable to, the system could have a restriction, the inverter may not be applying the correct
power to the compressor pins (check pins to see if getting 120V to each pin).
•
Resistance between all pins should be the same. Dependent upon temperature of the com-
pressor, resistance could be different than the resistance specified at the standard tem
-
perature.
7.0
Refrigeration System Repair Instructions
Air Infiltration
Air infiltration can occur in several locations.
Note:
Unit may manifest longer than normal run
times caused by the additional loads that
air infiltration presents.
Signs of air infiltration include:
•
Presence of water, moisture or ice
•
Condensation on glass or metal surfaces
•
Check door gaskets for rips, cracks, or oth-
er damage.
•
The door gasket should be pushed in firmly
and lay flat.
•
Ensure gasket forms a complete seal
around door.
•
Sealing compound is used to seal wiring and
line set pass-through between the con-
denser and the evaporator compartments.
See Figure 7-1 and Figure 7-2.
•
Check for voids and ensure sealing
compound completely fills the space.
Figure 7-1. Sealing Compound at Wiring Pass-through –
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Troubleshooting Guide – Beverage Dispensing
Page 7-1
