63
AdaptaPAK® Maintenance and Troubleshooting
EVAPORATOR TROUBLESHOOTING CHART
Coil not clearing
of
frost during
defrost cycle
1. Coil temperature not
getting above freezing
point during defrost
2. Not enough defrost
cycles per day
3. Defrost cycle too short
4. Defective timer or
defrost thermostat
1. Check heater operation
2. Adjust timer for more
defrost cycles
overload conditions
3. Adjust defrost
thermostat or timer for
longer cycle
4. Replace defective
component
Ice accumulating
in drain pan
1. Defective heater
2. Unit or pan not pitched
properly
3. Drain line plugged
4. Defective drain line
heater
5. Defective timer or
thermostat
1. Replace heater
2. Check and adjust if
necessary
3. Clean drain line
4. Replace heater
5. Replace defective
component
Uneven coil
frosting
1. Defective heater
2. Location is too close to
door or opening
3. Defrost termination set
too low
4. Incorrect or missing
distributor nozzle
1. Replace heater
2. Check and adjust if
necessary
3. Adjust defrost
termination setting to
be higher
4. Add or replace nozzle
with appropriately sized
orifice for conditions
Summary of Contents for Adaptapak ADP-M0000-L0032
Page 4: ...4 AdaptaPAK Parallel Refrigeration System ...
Page 20: ...20 AdaptaPAK Parallel Refrigeration System ...
Page 28: ...28 multiMAX Controller for AdaptaPAK ...
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