28
Pressure limiting/adjusting valve
Mounted as standard on LW-K, ZW-K, AX and available as optional accessory for the other
models.
It is a valve that makes it possible to adjust the working pressure and that allows the pump fluid
to reflow towards the by-pass duct, thus avoiding the onset of dangerous pressures, when you
interrupt the flow rate or when you try to set pressure values above the maximum allowed ones.
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CAUTION
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The pressure limiting/adjusting valve is calibrated by the Producer or Builder of the machine
with the built-in pump
. Never operate on the pressure limiting/adjusting valve not to alter
the calibration: operate on it only by using the knob (15).
2.3 IDENTIFICATION PLATE
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CAUTION
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If during the use the identification plate is worn, apply to the dealer or to an authorised
service centre to reset it.
The identification plate (7) contains the serial number and the pump model with a suitable code
hinting to the main technical features of the pump (see also the paragraph “FEATURES AND
TECHNICAL DATA”).
3. INTENDED USE
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CAUTION
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The pump is only intended for pumping:
- high-pressure water in washing machines (water cleaners);
- water not for food use.
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The pump is not intended for distributing:
-
non-filtered water or water with dirt;
- detergents, paints and chemical substances both in their pure state and in water solution;
sea water or high salt concentration water;
fuels and lubricants of any kind and type;
flammable fluids or liquefied gases;
food liquids;
water with temperature higher than 60°C or lower than 5°C;
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The pump must be never used to wash: persons, animals, electrical devices under voltage,
delicate objects, the pump itself or the machine it is part of.
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The accessories (standard and optional) and the detergents used with the pump must be of the
type authorised by the Producer.
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The pump is not suitable for the use in rooms that show particular conditions such as, for
instance, corrosive or explosive atmospheres.
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For the use on vehicles, boats or aircraft, apply to the technical service of the Producer
because some added prescription can be necessary.
Any other use is improper.
The Producer cannot be hold liable for possible damage resulting from unintended or wrong uses.
4. OPERATION
4.1 PRELIMINARY ACTIVITIES
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CAUTION
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The pump cannot be commissioned if the machine on which it is built-in does not conform
with the safety requirements established by the European Directives. This conformity is