Pratissoli MW Serie Manual De Uso página 55

The pressure supplied by the pump is insufficient:
- Use (nozzle) is or has become higher than the
capacity of the pump.
- The number of rpms is insufficient.
- Excessive leakage of the pressure seals.
- Imperfect functioning of the pressure control
valve.
- Worn valves.
The pump is overheated:
- The pump is working in pressure excess or the
number of rpms is higher than the nominal rate.
- Oil in the pump casing is not at level or not the
recommended type as detailed in chapter 7 (see
par. 7.6).
- Joint or pulley alignment is incorrect.
- Excessive pump tilt during operation.
Vibrations and shock to pipes:
- Air suction.
- Imperfect functioning of the pressure control
valve.
- Valve malfunction.
- Non-uniformity in the transmission motion.
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