Nakayama PRO NP2055, Manual

Page: 4 / 7

EN
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4
Risk for equipment damage!
The pump shall be filled with water when the new equipment is connected. It
is unnecessary to make up additional water during the extension operation.
The dry running of equipment is likely to damage the equipment during the
unmanned supervision.
Filling and suction:
1. Unscrew the pump cover.
2. The pump shall be filled with water completely.
3. Install the filter again and screw the pump cover and sealing elements.
4.When it is necessary to shorten the suction time, please fill in the suction
hose.
5. Open the pressure pipeline (faucet or nozzle) to make the air escape
during the intake process.
6. Switch on the equipment.
7. Switch off the equipment when water is exhausted evenly.
Maintenance
1.Please disconnect the power supply before any operation of maintenance.
2. The equipment will only fulfill the maintenance and trouble removal tasks
as specified in the instructions. Other faults shall be removed by experts.
3.Please apply the original components. Only these replaceable components
are specifically designed and produced for the equipment. When other
components are replaced, the warranty will be invalid and you and your
environment are likely to be endangered.
Risk for electric shock!
Please disconnect the power supply before any operation of equipment.
Attention:
All gaskets shall be renewed when components are dismantled.
Trouble
shooting
Causes Remedies
The pump fails
to operate
1. No voltage
2.Excessively high liquid
temperature is causing
motor overheating.
3. Foreign body obstruc -
tion.
4. The residual current
circuit starts up the
breaker.
5. Motor fault.
1. Check the power cable,
plug, socket and fuse.
2. Find out the specific
reasons and solve it.
3. Clean filter.
4. Activation RCCB. If RCCB
starts again, contact with a
qualified electrician.
5. Contact with the service
partners.
The water pump
fails to draw
water regardless
of its operation
1. Obstruction in the
suction inlet.
2. The pump has inhaled
air.
3. The pump is blocked
by foreign body.
1. Remove blockage.
2. Check the joint airtight -
ness.
3. Clean filter.
Excessively low
hydraulic head
1. The pressure pipeline
has excessively small di
-
ameter.
2. The pressure pipeline
is blocked.
3. The suction inlet is ob -
structed.
4. The pressure pipeline
is kinked.
5. The pressure pipeline
is untight.
1. Apply the pressure pipe
which has a large diameter.
2. Remove blockage.
3. Clean up the suction inlet.
4. Straighten the pressure
line.
5. Seal the pressure pipeline
and screw the threaded a
connection.
The pump
makes excessive
noise during
operation
Pump inhaled air
Ensure that there is enough
liquid.
Check the joint airtightness.
Fault and Remedial Measures
In most cases, you will be able to troubleshoot problems easily by yourself.
Before you contact us, please refer to the following table for technical
support. This will help you save a lot of work and possible expenses.
If you are unable to remove the faults, please contact with the local
suppliers directly. Please remember that the repairing of laypeople will
invalidate your warranty and claims for compensation and give rise to the
extra costs.