20
11 Troubleshooting table
WARNING
In the event of a malfunction or abnormal operation, shut off the pump immediately
to prevent a dangerous situation and/or damage to the unit.
Malfunction
Probable cause
Diagnose
Possible solution
Insufficient output
Dry pump housing
Screaming sound with
every pump movement
Fill the pump housing
with at least 10 liter of
water (1 bucket)
Worn out collars
Check the state of the
collars through
inspection covers 4 & 7
Replace the collars
Defect suctionvalves
Remove inspection
covers 2 & 5 and check
for defects
Remove any blokages
or worn out/broken
parts
Insufficient suction
capacity during
commission
Stonebox is polluted
Check the stonebox
through cover 6
Clean the stonebox
Leakage through
inspection cover gaskets
Hissing sound
during/right after
commission near point
1,2,4,5,6 or 7
Tighten or replace
leaking gasket
Leaking stuffing box
packing
Hissing sound near
Stuffing box (3)
Adjust the gland plate
Defect discharge valves
Remove inspection
window 1 & 2 and
check for defects
Remove any blokages
or worn out/broken
parts
Worn out collars
Check the state of the
collars through
inspection covers 4 & 7
Replace the collars
1.
Inspection covers discharge
valves
2.
Inspecttion covers both
suction and discharge valves
3.
Gland plate
4.
Inspectioncover ear collars
5.
Inspectioncover suction
valves
6.
Stonebox cleaning window
7.
Inspection cover front
collars
