Troubleshooting Table - UPRENT BBA User Manual

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.
Problem
No flow while the pump and drive
are running.
Problem
Insufficient flow while the pump
and drive are running.
Possible cause
Wellpoint system is not properly
installed or leaking.
The the leather piston cups are
dry and have shrunk.
The leather piston cups are
totally worn out.
Too much iron or lime deposit in
the pump housing / in the stone
catcher.
Ice build-up around in the pump
housing / stone catcher
(normally the engine will not start
running).
Vacuum regulator valve on the
stone catcher is not set or
malfunctioning.
Possible cause
Wellpoint system is not properly
installed or leaking.
The leather piston cups are
worn.
Too much air leaking along the
gland packing (stuffing box).
Too much iron or lime deposit in
the pump housing / in the stone
catcher.
Vacuum regulator valve on the
stone catcher is not set.
Pump speed is too low.
Incorrect direction of rotation
(only electric driven pumps).
Solution
Check the wellpoint system and
eliminate the leaks.
Fill the pump housing with
water..
Replace the leather piston cups.
Clean the pump and stone
catcher.
Thaw the pump.
Adjust the valve to max. 8.5
metres on the vacuum gauge. Or
replace the valve.
Solution
Check the wellpoint system and
eliminate the leaks.
Replace the leather piston cups.
Tighten the gland follower so that
one (1) drop of water leaks every
five (5) seconds.
Clean the pump and stone
catcher properly.
Adjust valve to max. 8.5 metres
on the vacuum gauge.
Increase diesel engine RPM or
motor speed (VFD).
Reverse direction of rotation
(only electric driven pumps).
20