Elmo Rietschle G-BH9 User Manual
Page 26
Servicing
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© Gardner Denver Deutschland GmbH
Fault
Cause
Remedy
Carried
out by
Leak in system.
Seal leak in the system.
Operator
Wrong direction of
rotation.
Reverse direction of rotation by interchanging
two connecting leads.
Electrician
Incorrect frequency (on
pump-motor units with
frequency converter).
Correct frequency.
Electrician
Shaft seal defective.
Replace shaft seal.
Service*
)
Different density of
pumped gas.
Take conversion of pressure values into
account. Inquire with Service Department.
Service
Pump-motor unit
does not
generate any or
generates
insufficient
pressure
difference.
Change in blade profile
due to soiling.
Clean impeller, check for wear and replace if
necessary.
Service*
)
Flow speed too high.
Clean pipes. Use pipe with larger cross-
section if necessary.
Operator
Abnormal flow
noises.
Muffler soiled.
Clean muffler inserts, check condition and
replace if necessary.
Service*
)
Abnormal
running noise.
Ball bearing lacking
grease or defective.
Regrease or replace ball bearing.
Service*
)
Seals on muffler
defective.
Check muffler seals and replace if necessary.
Service*
)
Compressor
leaky.
Seals in motor area
defective.
Check motor seals and replace if necessary.
Service
*
)
Only when the maintenance manual is at hand: rectification by the operator.