Starting Procedure; Operation; Water Leaks From Seals; Pump Shutdown - Bertolini LIGHT DUTY Serie Manual Del Usuario

5.1 Starting procedure


Start the pump without any pressure, after setting to zero the pressure regulator or opening the
possible by-pass devices.

Check the RPM do not exceed the max. value indicated in the label.

Before taking the pressure to the required value, wait until all the air in the circuit has come out and
the water comes out with a continuous and firm jet.
During the winter months, and in case of intense cold, before starting the pump, check the pos-
sible presence of ice in the inlet and in the pressure circuits.
Do not run the pump before the circuit has been completely defrosted.

5.2 Operation

Caution! The high pressure jet, if incorrectly used, may damage persons, objects and an-
imals. No operation must be carried out when the system is working, except the
pressure regulation. If, for instance, it is necessary to tighten a plug, or a fitting, to con-
trol a high-pressure hose, or other, before carrying out the operation, reset the pres-
sure and stop the pump.

The water jet must be always directed to the operating area, even during tests and preliminary
controls.

Do not run the pump before having directed the jet towards the operating area.

The operating area concerned with the jet must be forbidden and cleared of objects which, if
bumped by the pressure jet, can be damaged or blow away.

Check the trajectory of the fragments removed by the water jet and, if necessary, use proper
bulkheads to protect anything could be accidentally struck by the fragments.

Too high pressures may damage the objects that you require to wash; we recommend carrying
out preliminary operating tests (working pressure, distance from the nozzle, from the object,
etc.).
Idromeccanica Bertolini S.p.A.
or objects, as may arise from the improper use of the pump and other relevant accessories in the sys-
tem where the pump is installed.
5.3

Water leaks from seals


In some pumps, when starting up you can notice a little leak of water (a few drops), from the ar-
ea under the crankcase: it is a normal factor for the correct pump operation.
5.4

Pump Shutdown


Stop the pump only after setting to zero the pressure operating on the pressure regulator or on
the by-pass devices.

If chemical products have been used, run the pump with clean water for a few minutes. Then,
empty the pump, disconnecting the suction and running the pump for about 20 seconds.

During the winter months, when the pump is subject to freezing conditions, or when
see a long time of no operation, it is necessary to empty all the circuit from the fluid residues, or
mix clean water with anti-freeze liquid in correct proportions.
declines any civil or criminal liability, for damage or accidents to persons
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