Publicité
P2.x ATEX
7.1 Troubleshooting
CAUTION
Risk due to defective device
Personal injury or damage to property
a) Switch off the device and disconnect it from the mains.
b) Repair the fault immediately. The device should not be turned on again before elim-
ination of the failure.
CAUTION
Hot surface
Burning hazard
According to the product type and operation conditions, the temperature of the housing
may exceed 50 °C during operation.
Depending on the conditions at the installation site it may be necessary to provide these
areas with appropriate warning signs.
Malfunction
Pump doesn't start up
Pump doesn't convey
Noisy pump operation
Premature ring gear wear
Protective device is trigger-
ing
Poor performance
Tab. 1: Troubleshooting
For information about replacing spare parts, please refer to chapter Maintenance.
28
Bühler Technologies GmbH
Cause
– Broken or incorrectly connected lead
– Defective
– Defective or dirty valves
– Bypass valve open
– Defective bypass valve O-ring
– Torn bellow
– Coupling hub broken
– Broken/worn ring gear
– Crankshaft out of alignment
– Work ring gear
– Loose coupling hub
– Engine bracket damaged
– e.g. contact with ozone influences or
similar, causing a physical change to
the ring gear
– Coil- and terminal short circuit
– Start-up time exceeded
– Leakage
– Torn bellow
– Defective or dirty valves
Action
– Check connection or fuse and switch
– have repaired by Bühler service technician
– Carefully blow out or replace valves or see chapter
Replacing the inlet and outlet valves
– Close bypass valve
– have repaired by Bühler service technician or see
placement of the O-ring of the bypass valve (op-
tional)
[> page 24].
– have repaired by Bühler service technician or see Re-
placing bellow and connecting rod-eccentric-com-
bination.
– have repaired by Bühler service technician
– have repaired by Bühler service technician or see In-
specting and replacing the flexible spider.
– have repaired by Bühler service technician or see Re-
placing bellow and connecting rod-eccentric-com-
bination.
– have repaired by Bühler service technician or see In-
specting and replacing the flexible spider.
– have repaired by Bühler service technician
– have repaired by Bühler service technician
– Eliminate any physical changes to the ring gear
– Measure insulation resistance
– Check start-up requirements (see chapter
on the sample gas pump
– Tighten head screws, note torque (see chapter Main-
tenance).
– have repaired by Bühler service technician or see Re-
placing bellow and connecting rod-eccentric-com-
bination.
– Carefully blow out or replace valves or see chapter
Replacing the inlet and outlet valves
[> page 24].
Re-
Switching
[> page 18]).
[> page 24].
BE420002 ◦ 07/2024
Publicité
