35
The pressure limiting/adjusting valve is set for a
value that is lower than the maximum one.
The water supply is not enough or you are priming
from an excessive depth.
Unsuitable use (for instance, nozzle worn or too
big)
The use is set for the operation with detergent
suction (low pressure).
PROBLEMS
CAUSES
SOLUTIONS
The pump does not prime
Air suction
Chek the integrity of the suction circuit
Delivery side closed (for istance, in case of
water cleaner, water gun in closed position)
Set the delivery pression to zero (for istance,
in case of a water cleaner, press the lever of
the water gun)
The pump does not reach the maximum
pressure
Irregular pressure and flow rate (buttons)
Air suction
The water inlet filter is dirty
High noise
Low detergent suction
Set the correct pressure value (in the models
LW-K, ZW-K and AX rotate the knob (15) in
clockwise direction)
Check that the flow rate of the hydraulic network
or the priming depth conform with what
described in paragraph "Features and technical
data".
Reset the use
Reset the use for the operation at high pressure.
The water supply is not enough or you are priming
from an excessive depth.
The pump has not completed its priming.
Clogged use (for instance, clogged nozzle).
Check the integrity of the suction circuit
Clean the filter
Check that the flow rate of the hydraulic network
or the priming depth conform with what
described in paragraph "Features and technical
data".
Have the pump be primed according to what
described in paragraph "Standard operation
(high pressure)".
Reset the use
Suction circuit with necks
Temperature of the feeding water too high.
Check the suction circuit.
Supply the pump with water below 60
o
C/140
o
F.
The use is not set for the detergent suction
operation (low pressure).
The detergent batching device is closed or set
for a low suction.
The used detergent is too dense.
Set this function by referring to the use and
maintenance manual on which the pump is
installed.
Rotate the detergent adjusting knob (16) in
counter-clockwise direction.
Observe the uses and the dilutions indicated on
the plate of the used detergent.
SECOND PART
(only for the
Skilled Engineer
)
D
CAUTION
v
This parts of the manual is only for the
Skilled Engineer
and is not directed to the pump
user.
1. UNPACKING
D
CAUTION
v
During the unpacking operations, it is necessary to wear gloves and safety goggles in order
to avoid damage to hands and eyes.
v
The packaging elements (plastic bags, clamps, etc.) must be never left at children’s reach
because they are a source of possible dangers.
v
The disposal of the packaging components must be carried out in compliance with the standard
which are valid in the countries where the pump has been installed.
Especially plastic bags and plastic materials must not be abandoned in the environment,
because they damage it.