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Trouble shooting
Problems
Possible causes
The pump
1.There is no
does not run
supply
2. Undervoltaghe
release is
switched off
3. Mechanical
sealing (sliding ring
sealing) is stuck
together
The pump
1.Air in the pump
runs, but it
body.
does not
pump the oil.
2. The pump sucks
the air in the field
of suction.
Heat
1.Supply does not
protection
correspond to data
stops the
on the motor label.
pump due to
overheating.
2. Foreign matter
has blocked the
moving wheel.
3. The pump was
running more than
15 minutes without
liquid or with
closed discharging
hole.
4. The pump is
overloaded
Measure
1. Check the voltage and
secure and push the plug
in
2. Switched it on
3. Turn freely the motor
shaft with big screw
driver stuck through the
ventilator cover.
1.Bleed it (see „Putting
into operation")
2.Check the tightness of
the outlet hose. The
outlet hose shall be
completely submerged
into the liquid and shall
not have any strangling
places or siphons.
Observe maximum height
of filling.
1. Check the voltage in
the mains
2. Take off the suction
pipe and remove the
foreign matter.
3. Let the pump get cool,
then start it again. Check
if the mechanical sealing
has not been damaged
during that time.
4. Plan more breaks
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