masosine SPS 100, User Manual

Page: 32 / 139

20 Troubleshooting
Error Cause Remedy
Pump does not
draw in
Direction of rotation not correct Check direction of rotation
No wetting liquid in pump Fill pump with liquid
Screw fastening not tight Check screw fastening
Suction pipe too long Adapt suction pipe
Suction pipe too narrow Adapt suction pipe
Shaft seal leaking Check all seals for damage
Wearing parts worn Replace wearing parts
Motor speed not correct Measure and regulate speed
Gate and gate guide wrongly positioned
Check position (see
"Changing rotation direction"
on page 24)
Pump does not
deliver
Direction of rotation not correct Check direction of rotation
Suction and pressure pipe confused Check pipe system
Motor speed not correct
Check pump speed against
performance curves—see
your purchase order
Wearing parts worn Replace wearing parts
Gate and gate guide wrongly positioned
Check position (see "Possible
pump orientations" on
page 24)
Inserted gate valve closed Check pipe system
Pump is noisy
Noises from the drive Consult manufacturer
Noises from the pump Consult manufacturer
Suction pipe too small (cavitation)
Shorten suction pipe or
increase diameter, reduce
speed
Knocking noises from the pumphead
Check if gate is worn and
replace if necessary
Noises from power frame
Fill oil, change tapered roller
bearings
Coupling not aligned
Align coupling correctly. See
"Good pump installation
practice" on page 22.
Pump leaks
Sealing system is leaking
Change seal faces, static /
dynamic or lip seals
O-ring seal leaking Replace O-ring
Lip seal ring on the power frame leaking, oil
escapes
Dismantle power frame,
replace lip seals
Pump leaks at
front housing
Housing seal not installed or wrongly installed
Install housing O-ring
correctly or replace
Housing seal defective
Install housing O-ring
correctly or replace
32 m-SPS-en-08