7
TROUBLE SHOOTING
1.
Pump not delivering water or not building up pressure
May be caused by one or more of the following :
a.
Pump not properly primed
b.
Foot valve leaking on suction lift
c.
Suction lift too high
d.
Suction piping not correctly sealed or holed allowing air to enter pump suction
e.
Blocked or worn impellers
f.
Insufficient water supply source
g.
Reverse rotation
2.
Motor not running
May be caused by one or more of the following :
a.
Power failure
b.
Blown fuse
c.
Motor overload tripped
d.
Motor windings faulty
3.
Motor thermal overload tripping
May be caused by one or more of the following :
a.
Low voltage supply
b.
Motor or pump seized
c.
Motor windings faulty
d.
Frequent cycling
To check for correct automatic pressure system operation:
•
Close gate valve at pump outlet, allowing pump to run and build up pressure until it
switches off at cut-out setting of pressure switch or Hydrascan
®
.
•
Open gate valve at pump outlet to allow water to discharge to an outlet point.
Pump will automatically switch on at cut-in setting of pressure switch or Hydrascan.
