KNF LAB LABOPORT SH820G Manual Del Usuario página 140

Troubleshooting
Vacuum system is switched on and not running; status display is not illu-
minated
Cause
Vacuum system is not
connected to the elec-
trical mains.
No voltage in the elec-
trical mains.
Vacuum system is switched on and not running; status display flashes red
(50% ON, 50% OFF)
Cause
Pump has overheated,
overtemperature pro-
tection has tripped.
Vacuum system is switched on but not running; status display is illumi-
nated red (100% ON)
Cause
Pump drive is blocked.
Vacuum system is switched on and not running; status display flashes red
(90% ON, 10% OFF)
Cause
Other fault
64
Troubleshooting
à
Connect the vacuum system to the electrical mains.
à
Check the circuit breaker for the room and switch it
on if necessary.
Tab.27: Troubleshooting: Vacuum system is switched on and not
running; status display is not illuminated
Troubleshooting
à
Pull mains plug of vacuum system out of socket.
à
Allow the pump to cool down.
à
Determine the cause of the overheating and rectify.
Tab.28: Troubleshooting: Vacuum system is switched on but not run-
ning; status display is flashing red
Troubleshooting
à
Pull mains plug of vacuum system out of socket.
à
Allow the pump to cool down.
à
Determine the cause of the blockage and rectify.
Tab.29: Troubleshooting: Vacuum system is switched on but not run-
ning; status display is illuminated red
Troubleshooting
à
Pull mains plug of vacuum system out of socket.
à
Allow the pump to cool down.
à
Contact KNF Customer Service.
Tab.30: Troubleshooting: Vacuum system is switched on but not run-
ning; status display is flashing red
Translation of Originial Operating Instruction, KNF 325562-325564 06/21
Vacuum system SH820G / SR820G SH840G / SR840G