Allweiler AEB.E Series - Troubleshooting; 8.1 Pump Malfunctions

Troubleshooting
8 Troubleshooting
8.1 Pump malfunctions
If malfunctions occur which are not specified in the following
table or canno t be traced back to the specifie d causes, please
consult the manufacturer.
Possible m alfunctions are identified by a number in the follow-
ing table. This number identifies the respective cause and rem-
edy in the troubleshooting list.
Malfunction
Number
Pump not pumping 1
Pumpingrateinsufficient
2
Pumping rate irregular or too high 3
No pump suction 4
Pump running roughly
5
Pump jammed 6
Pump leaking
7
Power consumption of the motor too
high/motor gets warm
8
Stator wears out pre m aturely
9
Tab. 9 Malfunction/number assignment
Malfunction number
12 34
5
6
7
89
Cause
Remedy
X
–––––––
Transp ort screw plugs still in place Remove the transport and sealing cover.
Dismount the pump and inspect it for
dry-running dam age.
X
–––––––
Supply/suction pip e closed by fitting
Open the fitting.
X
–––
X
–––
Supply/suction pipe not bled properly or
not filled up completely
Fill up the pump and/or piping completely
and bleed them.
X
–––
X
–––
Formation of air pockets in the sup ply or
suction pipe
Install the fitting for bleeding.
Correct the pipin g layout.
X
–––
X
–––
Pressure line blocked
Clean t he p ressu re line.
X
––
XX
–––
Pumprunninginthewrongsenseof
rotation
Swap any two phases on the motor
(→ 6.1.6 Checking the sense o f rotation,
Page 23).
X
––
X
–
X
––
Pump very dirty Dismount and clean the pump.
X
––––––
X
–
Packing gland bolted too tightly
Loosen the stuffing box gland on the
packing gland.
XX
–
XX
–––
Supply/suction p ipe , pump or suction
strainer blocked or en c rusted
Clean the supply/suction pi pe, pump or
suction strainer.
Clean the suction strainer.
XX
–
XX
–––
Air is sucked in
Seal the source of malfun cti on.
30 AE BA-2020.05 en-US 260371 – 176-982/0