Heidolph Hei-VAP Expert, Руководство по эксплуатации

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Troubleshooting
59
Troubleshooting Malfunctions and remedies
Errors on the
device
Possible cause Remedy
▪ The device
cannot be
switched on
▪ Display remains
dark after
switching on
No power supply Check that the plug is connected
properly to the power socket and the
device
Defective fuse Replace device fuses (see chapter
“Assembly, Electrical Connection”)
ON/OFF switch off Switch ON/OFF switch on
ON/OFF switch defective Contact local dealer
Device does not
heat
Connecting cable to
heating bath is not
attached
Attach connecting cable
Bath heating defective Contact local dealer
Overheating protection
activated
▪ Let the heating bath cool down
▪ Emptying the heating bath
▪ Reset overheating protection
(see the following section
“Resetting the temperature
limiter”)
Drive does not turn Rotation is switched off. Press rotation knob
Drive defective Contact local dealer
Motor lift does not
run
Lift is at end stop Move lift in the opposite direction
Lift is at height stop Change height stop
Mechanics / Motor
defective
Contact local dealer
No vacuum ON/OFF switch at the
vacuum pump off
Switch ON/OFF switch on
Vacuum valve defective Replace vacuum valve
Vacuum insufficient Leak in system ▪ Check seals and connections
▪ Check ground glass joints, grease if
necessary
Vacuum pump defective Follow information from the vacuum
pump manufacturer
Device switches
suddenly off
Fuses defective Replace fuse (see chapter “Assembly,
Electrical Connection”)
When pressure is
detected, the device is
emergency stopped, see
the settings for excess
pressure and leakage.
▪ Check system and switch device on
again
▪ Calibrate the vacuum sensor