CONDITION
Case Is Not Holding
Temperature
FCC - Non-refrigerated
cases do not regulate internal temperature and may be
slightly higher than ambient
temperature due to the lighting in the unit or direct sunlight.
FCCR - Climate Controlled Case – Federal Chocolate and Confectionary (Case
Is Not Designed For Cold Storage)
The refrigeration system in this type of unit has a
Design Temperature range is between 55°F to 70°F
and is considered to be
climate controlled, not “refrigerated”.
Note:
This unit
cannot
be used for perishable products.
Non-Refrigerated / Climate Controlled Merchandisers
are subject to air
disturbance and due to direct sunlight and close proximity of heating ducts, grills,
radiators, ceiling fans or main doors. Also, avoid locations where the unit is subject
to high humidity such as near cases with water misting or fogging devices.
Check Ambient Conditions of the Location
Most of our cases require a maximum ambient of 75°F / 55% RH (Relative
Humidity) Exceeding either or both can result in temperature issues as the
evaporator coil ices up and restricts airflow.
Check if the compressor is running.
Check that the condenser air inlet and outlet are not restricted.
Check that the condenser coil is clean
Warm Product
Check that thermostat is on.
Check for proper power at the compressor.
Adjust thermostat accordingly, the coldest setting is 9.
Check TXV bulb installation is secure and insulated.
Check that superheat is between 8°F to 12°F
.
If equipped, check sight glass for flashing and/or low charge.
Off cycle defrost mode.
Check for power in and out of pressure control as both Low and High side pressure
cutout will keep compressor from engaging.
Sweating
Front glass or product may sweat if the temperature inside the case gets too cold or
the %RH inside the case gets too high.
Humidity Control
Controls how much heat is introduced to the interior of the case to compensate run
time of the compressor. The lower the % RH, the more heat is applied and the
higher the % RH less heat is applied allowing the unit allowing the thermostat to
satisfy sooner. With the humidity control turned off, and the cold control maxed, the
case will achieve its coldest possible setting and potentially cause the unit to sweat
as a result.
Mechanical Thermostat
Coil sensing thermostat also controls the cut-in as well as the cut-out so that the
evaporator coil does not ice up.
Adjust thermostat accordingly, the coldest setting is 9.
Check that superheat is between 8°F to 12°F
.
TEMPERATURE ISSUES
FCC / FCCR – CHOCOLATE and CONFECTIONARY CASE
NON-REFRIGERATED / CLIMATE CONTROLLED
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