Operating faults
Troubleshooting possible faults
7750-9001-058
07-2006
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Hazards caused by unexpected malfunctions:
D
When working on the power supply, there is a risk of unexpected
malfunctions as a result of:
- a failure of fault in the control system
- re-establishment of the power supply after an interruption
- external influences on electrical equipment
- existing software defects
- mixing cleaning and disinfecting agents.
8.3
Troubleshooting possible faults
Symptom
Possible cause
Remedy
Red light on panel does
not light up
Circuit breaker on door is
OFF or tripped
Switch circuit breaker up
into the ON position
Fuse 1 or Fuse 2 open
Remove
power
and
replace fuse / fuses
(see
section
”Spare
parts”)
No incoming power, 100
to 120V AC at terminals
L1 and N
Check supply line
Lamp is burned out,
verify 24-30V DC is
present
at
lamp
terminals
Replace bulb
(refer to section ”Spare
parts”)
Rectifier is shorted or
disconnected
Replace rectifier
(refer to section ”Spare
parts”)
No lights at Fuse cards
Relay malfunction or not
connected
Check that the relay is
seated properly
Fuses open on fuse card Replace fuses
No voltage at stalls
Wiring or connection
missing
Verify wiring
