15
6. What To Do In Case Of Breakdowns?
Problem Possible
Causes
Remedy
Pump doesn't start;
• Power supply interrupted
• Check fuse in the power unit
None of the integrated LEDs
• Check plug contacts on the mains
glow on the TC 100
power unit
• Check power unit feeder line
• Check voltage on the power unit
(24 V DC) at connection X2
• Incorrect operations voltage supplied • Supply correct operations voltage
• Pins 3,4,5 and 7 on the plug X3
• Connect pins 3,4,5 and 7 on the
not connected
plug X3
• No supply of operations voltage
• Check plug contacts on the powe unit
• Defect TC 100
• Inform PFEIFFER Service of need for repair
• 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 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 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 Service of need for repair
• Rotor damaged
• Inform PFEIFFER Service of need for repair
• Splinter shield (if fitted)
• Check seat of splinter shield
not seated firmly
(see Section 3.2.)
Red LED on the TC 100 glows
• Collective malfunction
• Reset via mains OFF/ON when the TMP is at
standstill or remote pin 6
• Different malfunction display with the
DCU possible
Red LED on the TC 100 flashes
• Warning through:
• Different warning message with
the DCU possible
– Mains power failure
• Check power unit voltage
• Check power unit mains
connection
