Troubleshooting - Nilfisk-ALTO NEPTUNE 5 FA Service Manual

When trouble-shooting it will be a great help if you can locate the fault as being either an external
fault or an internal fault.
External faults are due to either improper maintenance, incorrect operation or operation under parti-
cularly straining conditions.
External faults usually represent the following:
The below-mentioned conditions have been checked and found ok:
Check point
1. Installation fuse blown.
2. Plug defective.
3. Cable bursting.
4. Too long, to small or defective extension cables.
5. High/low pressure nozzle blocked or worn.
6. Spray handle defective or leaky.
7. High pressure hose too long or defective.
8. Water inlet filter blocked (dirty water).
9. Inadequate supply of mains water.
10. Air sucked into the pump (detergent tank empty).
11. Detergent system blocked (dried-up).
12. Inlet water too hot.
13. Fuel filter blocked.
14. Air adjustment faulty.
15. Fuel level low. Water in tank.
The internal faults require a systematic going through of the motor pump by a Nilfisk-ALTO
technician. In order to establish the reason of the fault with certainty, it may be a help to use
the over-leaf yes/no diagrams.
NEPTUNE 5 FA_EN_Ver.2.0_25/11

Troubleshooting

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