Malfunctions; Rectifying Malfunctions - Pfeiffer Vacuum HIPACE 800 Operating Instructions Manual

Malfunctions

9 Malfunctions
9.1

Rectifying malfunctions

Problem
Pump does not start; none of the built-in
LEDs on the TC 400 lights up
Pump does not start; green LED on the TC
400 is flashing
Pump does not attain the final rotational
speed within the specified run-up time
Pump does not attain the ultimate pres-
sure
Unusual noises during operation
Red LED on the TC 400 is on
34
If malfunctions on the pump occur, you will find possible causes and instructions for re-
pair in the following table.
Possible causes
● Electrical supply interrupted
● Operating voltage incorrect
● No operating voltage applied
● TC 400 defective
● At operation without control panel:
Pins 1-3, 1-4 or 1-14 are not connected on
the "remote" connection
● At operation via RS-485: Bridge at Pin 1-
14 prevents control commands
● At operation via RS-485 (without mating
plug): Parameters of the electronic drive
unit not set
● Voltage drop in the cable too high
● Fore-vacuum pressure too high
● Leak
● Gas throughput too high
● Rotor runs hard, bearing defective
● Setpoint for run-up time to low
● Thermal overload:
– Lack of air ventilation
– Water flow too low
– Fore-vacuum pressure too high
– Ambient temperature too high
● Pump is dirty
● Vacuum chamber, pipes or pump are
leaky
● Bearing damage
● Rotor damage
● Splinter shield or protective screen are
loose
● Collective fault
1)
If no Pfeiffer Vacuum display and control unit is available, please contact the Pfeiffer Vacuum Ser-
vice.
Remedy
 Check plug contacts on the power supply
 Check supply lines on the power supply
 Check the output voltage (24 / 48 V DC) on the
connection "DC out" of the power supply
 Check the plug contacts on the TC
 Apply correct operating voltage
 Observe the rating plate
 Apply operating voltage
 Exchange the TC 400
 Contact the Pfeiffer Vacuum Service
 Connect the pins 1-3, 1-4 or 1-14 on the "re-
mote" connection
 Install the mating plug (scope of delivery) to the
"remote" connection.
 Remove the bridge betwenn pins 1 and 14 from
the "remote" connection
 Remove the mating plug from the "remote" con-
nection.
 Set parameters [P: 010] and [P: 023] "ON" via
interface RS-485.
 Please refer to operating instructions of the
electronic drive unit.
 Use a suitable cable
 Ensure function and suitability of the backing
pump
 Perform leak detection
 Check sealings and flange fastenings
 Eliminate leaks
 Reduce process gas supply
 Check the bearing for noises
 Contact the Pfeiffer Vacuum Service
 Extend the run-up time via DCU, HPU or PC
 Reduce thermal loads
– Ensure adequate cooling
– Ensure the cooling water flow
– Lower the fore-vacuum pressure
– Adjust ambient conditions
 Bake out the pump
 Cleaning in case of heavy contamination
– Contact the Pfeiffer Vacuum Service
 Leak detection starting from the vacuum cham-
ber
 Eliminate leaks
 Contact the Pfeiffer Vacuum Service
 Contact the Pfeiffer Vacuum Service
 Correct the seat of the splinter shield or the pro-
tective screen
 Observe the installation notes
 Reset by switching the mains OFF/ON
 Reset via pin 13 on the "REMOTE" connection
 Differentiated malfunction display is possible via
1)
RS-485
 Contact the Pfeiffer Vacuum Service