Repairs/Troubleshooting - ProMinent DULCOMETER PH-501 Assembly And Operating Instructions Manual

Servicing
9.1

Repairs/troubleshooting

Fault Cause
Motor does not At least two power supply
start; leads interrupted.
no motor
noise.
Motor does not One power supply lead
start; humming interrupted.
noise.
Impeller is jammed.
Impeller defective.
Rolling bearing on drive
motor side or vacuum
pump/compressor side
defective.
Protective Winding short-circuit.
motor switch
Motor overloaded. Throttling
trips when
does not match specification
motor is
on rating plate.
switched on.
Power
Compressor is jammed.
consumption
too high.
Pump-motor Leak in system.
unit does not
Wrong direction of rotation.
generate any
or generates
insufficient
Incorrect frequency (on
pressure
pump-motor units with
difference.
frequency converter).
Shaft seal defective.
Different density of pumped
gas.
Change in blade profile due
to soiling.
Abnormal flow Flow speed too high.
noises.
Muffler soiled.
Abnormal Ball bearing lacking grease
running noise. or defective.
Compressor Seals on muffler defective.
leaky.
Seals in motor area
defective.
*) Only when the maintenance manual is at hand: rectification by the operator.
610.44436.40.000
Remedy
Eliminate interruption by fuses, terminals or
power supply cables.
Eliminate interruption by fuses, terminals or
power supply cables.
Open vacuum pump/compressor cover,
remove foreign body, clean.
Check or correct impeller gap setting if
necessary.
Replace impeller.
Replace motor bearing or vacuum
pump/compressor bearing.
Have winding checked.
Reduce throttling.
Clean filters, mufflers and connection pipes
if necessary.
See fault: "Motor does not start; humming
noise" with cause: "Impeller is jammed.".
Seal leak in the system.
Reverse direction of rotation by
interchanging two connecting leads.
Correct frequency.
Replace shaft seal.
Take conversion of pressure values into
account. Inquire with Service Department.
Clean impeller, check for wear and replace
if necessary.
Clean pipes. Use pipe with larger cross-
section if necessary.
Clean muffler inserts, check condition and
replace if necessary.
Regrease or replace ball bearing.
Check muffler seals and replace if
necessary.
Check motor seals and replace if
necessary.
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Carried out by
Electrician
Electrician
Service*)
Service
Service*)
Service*)
Electrician
Service*)
Service*)
Service*)
Operator
Electrician
Electrician
Service*)
Service
Service*)
Operator
Service*)
Service*)
Service*)
Service
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