desmon GBF-7 - Troubleshooting; Probes

7 Rev 07/04/2015
3. Troubleshooting
WARNING: Before performing any service that involves electrical
disconnection and/or exposure to electrical components,
Electrical
LOCKOUT/TAGOUT Procedure. Disconnect
can cause property damage, injury or
If, upon first inspection, the cause of a problem is not obvious, a more thorough
troubleshooting may be necessary. The unit may need to be un
removed from the power supply so the internal components can be
3.1. PROBES
The Blast Chiller is equipped with several temperature sensing probes. These
Negative Temperature Coefficient (NTC) thermoset sensors. The
probes have the same configuration.
needle probe (5 cores, but only 4 being read from the board).
ROOM/EVAPORATOR PROBE TYPE
NTC NEEDLE PROBE TYPE
S
The needle probe has a different sensing element. Both types of probes have the
same resistance to temperature correlation.
NTC PROBE
Blast ch
WARNING: Before performing any service that involves electrical
disconnection and/or exposure to electrical components,
always follow the
LOCKOUT/TAGOUT Procedure. Disconnect
all circuits. Failure to comply
can cause property damage, injury or
death.
If, upon first inspection, the cause of a problem is not obvious, a more thorough
troubleshooting may be necessary. The unit may need to be un
plugged or
removed from the power supply so the internal components can be
tested.
The Blast Chiller is equipped with several temperature sensing probes. These
Negative Temperature Coefficient (NTC) thermoset sensors. The
cham
probes have the same configuration.
The Touch Screen version has a special multicore
needle probe (5 cores, but only 4 being read from the board).
ROOM/EVAPORATOR PROBE TYPE
S
The needle probe has a different sensing element. Both types of probes have the
same resistance to temperature correlation.
BULB
PROBE MEASURING
Blast ch
iller Service Manual
WARNING: Before performing any service that involves electrical
connection or
always follow the
all circuits. Failure to comply
If, upon first inspection, the cause of a problem is not obvious, a more thorough
plugged or
otherwise
tested.
The Blast Chiller is equipped with several temperature sensing probes. These
probes are
cham
ber and evaporator
The Touch Screen version has a special multicore
The needle probe has a different sensing element. Both types of probes have the
PROBE MEASURING