5
TROUBLESHOOTING
Malfunction Cause Troubleshooting
1. Motor
does not
rotate
- Supply voltage
missing or wrong
- Faulty connection
- Defective power
cable
- Impeller blocked
- Activated
motor protection
(overheating,
blockage, voltage
error or other defect)
- Float suspended
- Motor defective
- Check power
supply
- Correct
connection
- Replacement
(Customer
service)
- Clean
- Check, inform
customerservice
- Change the
position of the
pump
-Replacement
(Customer
service)
2. Motor
rotates, but
does not
convey
- Impeller clogged or
worn
- Discharge pipe
clogged/hose kinked
- Sieve clogged
- Clean/Replace
- Clean/Remove
kinks
- Clean
3. Feed
volume too
low
- Pump not properly
ventilated (air bubble
int the housing)
- Discharge pipe
dimensioned too
small
- Remove air by
tilting the pump
- Min. diameter of
25mm
4. The pump
stops too
quickly
- Water too dirty
- Pump blocked
- Thermical
protection on
- Unplug and
clean
- Unplug and
cleanr
- Check the water
temperature (see
4. Technical data)
SANISUB STEEL is guaranteed for 2 years for
parts and labour, subject to correct installation
and use of the unit.
Prior to commissioning, check the pump
for possible external damages (e.g.
transport damages) in order to prevent
accidents with electrical current.
If the pump shall be inserted into a pit or a duct,
its dimensions must allow the oat switch to
move freely. When the water level rises with the
oat oating to the top, so the pump will turn on
and pump o the water until such a low water
level has been achieved that the oat turns o the
pump again.
The heights required by the oat to start and stop
the pump can be changed by moving the oat
cable through its xing eyelet.
The inlet screen must not be clogged by mud and/
or brous media.
Even an automatically operating device,
such as a submersible pump, must not
be operated for a long period of time
without supervision.
Non-return valve : In order to prevent liquid
from owing back from the hose / piping after
switching o the pump, the enclosed check valve
Ⓑ can be installed:
- hold the valve by the cover
- place the valve, with the cap facing upwards, in
the discharge connection
Disconnect the electrical supply before
carrying out work on the unit!
Maintenance consists of checking and cleaning
the sieve :
- Turn over the pomp
- Undo the screws
- Clean the sieve
- Reassemble sieve by following the opposite
procedure.
