Voith IPV Series - No Pressure Build-up During Operation; Pump Stopped with Intact Drive

43
Voith Turbo H + L Hydraulic GmbH & Co. KG 25000057510-TED-ENX-04
Operating fault Possible cause Solution
The pump is working,
but there is no build-
up of pressure
Air is feeding into the suction piping see chapter 11
Check the direction of rotation, and switch
around if necessary
Enlarge the suction cross-section, clean the
suction filter, correct the suction pipe, reduce
the suction height, reduce the suction length.
The pressure valve does not close as a
result of dirt or wear on seal
Clean the pressure valve and/or replace
defective parts
The directional control valve is set to:
depressurized circulation
Set the valve to the correct working setting; in
the case of solenoid valves, check the electrical
connection
Pressure pipe is not tight Tight the pressure pipe
The pump is heavily worn Have the pump repaired by the manufacturer
The pump has
stopped pumping
even though the
drive is intact
The pump shaft has sheared off Have the pump repaired by the manufacturer
Damaged coupling
Replace the coupling and install in accordance
with the instructions
The suction piping is unsealed
Seal the pipe, tighten the screw fitting.
The oil level in the tank has fallen below the
suction minimum
Top off the pressure fluid
Extend the suction piping.
The pump is too loud
The pump sucks in air
see chapter 11
Check the direction of rotation, and switch
around if necessary
Enlarge the suction cross-section, clean the
suction filter, correct the suction pipe, reduce
the suction height, reduce the suction length.
The shaft seal is defective
Replace the pump
Cavitation in the pump see chapter 11
Check the direction of rotation, and switch
around if necessary
Enlarge the suction cross-section, clean the
suction filter, correct the suction pipe, reduce
the suction height, reduce the suction length.
The coupling is defective Replace the coupling and install in accordance
with the instructions
The pump is defective Replace the pump
Tab. 16.1: Operating faults and solutions table
Internal gear pumps
Faults and solutions
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