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12 EN
submerged waste water pump TWP 4025 E / TWP 7025 E / TWP 11025 E
Errors and faults
Warning of electrical voltage
Do not touch the mains plug with wet or damp hands.
Warning of electrical voltage
Tasks which require the housing to be opened
must only be carried out by authorised specialist
companies or by Trotec.
Switch the device off.
Hold onto the mains plug while pulling the power cable out
of the mains socket.
The device has been checked for proper functioning several
times during production. If malfunctions occur nonetheless,
check the device according to the following list.
The device does not start:
Check the power connection.
Check the on-site fusing.
Check the power cable and mains plug for damages. If you
notice damages, do not try to take the device back into
operation. To avoid safety hazards, do not perform any
repairs. Dispose of the device as described in the Disposal
chapter.
Check whether the float switch is located above the
automatic switch-on position.
The device might have overheated and the thermal
protection circuit is activated.
If so, wait for approx. 10minutes before restarting the
device. If the device is not starting, have the electrics
checked by a specialist company or by Trotec.
The water temperature is above 35°C and the thermal
protection circuit is activated.
Check whether there are any foreign objects in the air
intake opening(5), the impeller, the reducer(7) and/ or
the hose or pipe.
The device is running, but not pumping any water:
Check the inside of the device for any remaining air. Lower
the device into the water at a slight angle and wait for the
air to escape completely.
Switch the device off and on again several times while it is
in the water in order to support automatic ventilation.
Check whether the minimum water level has been
reached, see technical data. In order to start pumping, the
device requires a minimum water level.
Check whether the hoses are blocked and whether the
water contains any suspended matter with a particle size
of more than 25mm, which could clog up the device.
Check whether the used hose diameter is too small.
Check whether the hose line is kinked or blocked. Remove
kinks and/ or blockages.
Check reducer(7) and/ or elbow(8) for blockages.
The device is not switching off automatically:
The float switch is hindered from lowering. Check whether
the float switch can move freely. Remove any blockages or
ensure sufficient freedom of movement for the float
switch.
The device switches off after a brief runtime:
Check whether the water temperature is too high. The
device might have overheated due to a too high water
temperature and the thermal protection circuit is activated.
Check the power connection.
Check the power cable and mains plug for damage.
Check the on-site fusing.
Check whether the hoses are blocked and whether the
water contains any suspended matter with a particle size
of more than 25mm, which could clog up the device. The
device might have overheated due to the blockage and the
thermal protection circuit is activated.
Insufficient or decreasing conveying capacity:
Check whether the hoses are blocked and whether the
water contains any suspended matter with a particle size
of more than 25mm, which could clog up the device.
Check the hose diameter and the delivery head. An
excessive delivery head paired with a small hose diameter
can cause a reduction of the conveying capacity.
Check whether the hose line is kinked or blocked. Remove
kinks and/ or blockages.
Note
Wait for at least 3 minutes after maintenance and
repair work. Only then switch the device back on.
Your device still does not operate correctly after these
checks?
Please contact the customer service. If necessary, bring the
device to an authorised specialist electrical company or to
Trotec for repair.
12


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Others manual(s) of Trotec TWP11025E

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Trotec TWP11025E User Manual - French - 17 pages


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