20
6. What To Do In Case Of Breakdowns?
Problem Possible
Causes
Remedy
Pump doesn't start;
• Power supply interrupted
• Check fuse in the power supply
None of the integrated LEDs
• Check plug contacts on the power supply
glow on the TC 600
• Check power supply feeder line
• Check voltage on the power supply
(72 V DC) at connection X2
• Incorrect operations voltage supplied • Supply correct operations voltage
• Pins 1-3 and 1-4 on the remote
• Connect pins 1-3 and 1-4 on the
plug not connected
remote plug
• No supply of operations voltage
• Check plug contacts on the power
pack unit
• Defect TC 600
• Replace TC 600 (please see Sec. 7.2.)
• Reduction in the voltage in the cable
• Use suitable cable
Pump doesn't attain nominal
• Fore-vacuum pressure too high
• Check backing pump function
rotation speed within the set
• Leak or too much gas
• Check seals
run-up time
• Seek leak and repair
Pump cuts out during operations
• Reduce supply of process gas
• Rotor sluggish caused by
• Check bearing (noises?): Inform
defective bearing
Pfeiffer Vacuum Service
• TC run-up time too short
• Set longer start-up time with the DCU or PC
• Thermal overloading caused by
– Water flow insufficient
• Ensure free flow
– Insufficient air supply
• Ensure adequate air supply
– Fore-vacuum pressure too high
• Reduce fore-vacuum pressure
– Ambient temperature too high
• Reduce ambient temperature
Pump doesn't attain final pressure
• Pump dirty
• Bake out pump
• If seriously contaminated: Request
Pfeiffer Vacuum Service to clean
• Leak in vacuum chamber,
• Seek leak starting with vacuum chamber
lines or pump
• Repair leak
Unusual operating noises
• Bearing damaged
• Inform Pfeiffer Vacuum Service of need for
repair
• Rotor damaged
• Inform Pfeiffer Vacuum Service of need for
repair
• Splinter shield (if fitted)
• Check seat of splinter shield
not seated firmly
Red LED on the TC 600 glows
• Collective malfunction
• Reset via mains OFF/ON or remote pin 5
• Different malfunction display with the
DCU or HPU possible1)
Red LED on the TC 600 flashes
• Warning through:
• Different warning message with
the DCU or HPU possible1)
– Mains power failure
• Check power supply voltage
• Check power supply mains
– Supply voltage short
connection
circuit to earth
• Check power supply voltage for short
circuit to earth
• Wrong setting for nominal rotation
• Enter 833 Hz for parameter 777
speed (Parameter 777)
(see operating instruction PM 0547 BN
“Pumping Operations With DCU”). If there is
no DCU/HPU available contact
Pfeiffer Vacuum Service .
1) Without a DCU or HPU inform Pfeiffer Vacuum Service to check the cause of trouble.
