Labconco Rapid Digestors 23080 - Manual (Page 13)

TROUBLESHOOTING
14
Symptom Probable Cause Corrective Measure
Main pilot light does not
illuminate. ON-OFF switch in off position Turn switch to ON position
Main power fuse blown or
circuit breaker tripped Replace fuse or reset circuit
breaker
25 Amp fuse on control unit
blown (8 Amp on Rapid
Digestor 4-Place) Check continuity of fuse with
ohmmeter. Replace fuse if
blown. If fuse continues to
blow, locate cause.
ON-OFF switch defective Replace switch. Refer to
Service Section for
replacement procedure.
No heat applied to unit.
Main pilot light
illuminated Sensor defective Check continuity of sensor
by placing ohmmeter across
pins 1 & 2 of female sensor
receptacle. If resistance
measurements show sensor to
be open, replace sensor by
following Service Section on
Sensor Replacement.
Indicator lamp not
illuminated. Bulb defective Check continuity of bulb
with ohmmeter and replace if
defective following Service
Section-Indicator Lamp
Replacement.
Defective resistor Check continuity of resistor
for the row of heaters behind
indicator lamp not
illuminated using ohmmeter.
Defective ceramic heater Check continuity of each
heater contained in the row
behind indicator lamp that is
not illuminated. Replace
defective heater following
Ceramic Heater Replacement
section.
Uneven heat applied to
unit (not applicable to
Rapid Digestor 4-Place Strip heater defective Check continuity of each
strip heater and replace
defective heater following
Strip Heater Replacement
section.