USER GUIDE
System Diagnosis Guide
Figure 6: Data Print Out
How to Replace the Paper Roll
Push on the printer front panel, the cover opens, allowing
access to the paper roll (see Figure 7).
Figure 7: Printer Cover
Remove the printer roller by pulling it from one side. Fit the
new paper roll and place the paper between the rollers (see
Figure 8). Reset the roller and printer cover.
Figure 8: Printer Roller
BASIC SERVICE DIAGNOSTIC (TOUCH SCREEN
CONTROLLER)
Figure 9: Touch Screen Menu
The Touch Screen Controller displays alarms that identify
the cause of a problem and the components and circuits
involved. In addition, a diagnostic service menu allows
technicians to quickly check the temperature sensors (such
as the needle probe, the chamber probe or the evaporator
probe), the relay status, the door switch input, and many
other things (see Figure 9).
Alarm/Failure List
ALARM MESSAGE NOTES/CONSEQUENCES
DOOR The door is open for too long during a
cycle.
MAINTENAINCE Perform a regular service inspection and
preventive maintenance. Call service for
more information.
CONDENSER HIGH
TEMPERATURE
The condenser temperature is too high if
compared to a normal working condition,
dened by a temperature threshold. For
this version of Blast Chiller, the alarm
is not enabled, because the condenser
probe is not installed.
HIGH PRESSURE Head pressure is too high, exceeding
29 barg (425 psig). Check for a clogged
condenser, condenser fan motor not
running a or pump down valve not
opening when the compressor is running.
EVAPORATOR LOW
TEMPERATURE
The evaporator temperature is too low
when compared to the current setpoint
temperature. A dierential parameter
LBT states the maximum gap should
exist between setpoint temperature and
evaporator temperature. The alarm may
occur the setpoint temperature changes
during a multistep automatic recipe, but
the evaporator temperature remains
low. Avoid this non-critical alarm by
setting the LBT as high as possible (i.e.,
72°F [40°C]).
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