5.5.
This is the list of all alarms event that may occur during operation, along with a
recommendation on how to solve them.
ALARM Name:
➢
DOOR - The door is open for more than the allowed time during a cycle.
➢
MAINTENAINCE – This is a reminder to perform a regular service inspection and
preventive maintenance. Contact an authorized service company for service.
➢
CONDENSER HIGH TEMPERATURE - It means that the Condenser temperature
exceeds 140°F/60°C, as defined by the (MCT) parameter.
➢
EVPORATOR LOW TEMPERATURE - It means that the Evaporator temperature is
too low when compared to the current Set-point temperature. There is a differential
parameter (LBT) that states the maximum gap that should exist between Set-point
temperature and Evaporator temperature. This alarm it’s not a critical one, however
it could be avoided by resetting (LBT) parameter to 50°F/10°C.
➢
DEFROSTING TIME – It means that the Defrost process was not terminated within
the maximum defrosting time. The Defrost normally ends by coil temperature
parameter (DTE). If this doesn’t happen within defrost parameter (DTO) minutes,
then the alarm triggers. The amount of ice on the evaporator coil, may require more
than one defrost. If the alarm occurs during the Hold cycle, there may be a problem
with the defrost hot gas valve. Using the Blast Chiller as a holding cabinet for a long
time may reach to this alarm too.
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