CONDITION
Case Is Not Holding Temperature
Refrigerated merchandisers are not intended as storage refrigerators and will
not “pull down” room temperature products efficiently.
LOAD CASE INTERIOR WITH PRE-
CHILLED 38°F OR COLDER PRODUCT ONLY
Refrigerated 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 air flow.
Check that the condenser air inlet and outlet are not restricted.
If equipped, check condenser coil filter is clean.
Check that the condenser coil is clean
Non-refrigerated
cases do not regulate internal temperature and may be
slightly higher than ambient temperature due to lighting in the unit or direct
sunlight.
Mechanical Thermostat (if
equipped)
If equipped, is a coil sensing thermostat that also controls the cut-in as well
as the cut-out so that the evaporator coil does not ice up.
Check that thermostat is turned on.
Adjust thermostat accordingly, the coldest setting is 9.
Electronic Unit Controller (if
equipped)
Check that the control is turned on.
Control Display Is Flashing -
If the control is flashing all of its lights, it is
likely that you have a grounding issue with the power source. Verify that the
unit is properly grounded.
Check to see if the compressor run indicator is on, calling for cooling.
Display Set Point
To check the set point on this controller, press and hold the set key for
approximately 3 second and the set point will begin to flash.
Adjust as necessary , then push the set key one time to lock in the new
setting.
TEMPERATURE ISSUES
ITALIAN GLASS, NEW BAKERY AND SERIES 90
BAKERY/COLD DELI
21
