TROUBLESHOOTING
Always close the compressed air supply and release the pressure in the plant before performing any check
or replacement of parts of the pump.
Problem
Possible cause
Solution
The pump does not start
Feeding air is not enough;
Check the air supply. Increase the
diameter of the feeding hose;
Outlet product line clogged;
Clean. Disconnect the outlet product
pipe. Feed pump at minimum pressure
and check if the pump starts without
the outlet pipe;
Dried product inside the pumping
element;
Disassemble the pumping group and
clean;
Pneumatic motor blocked in the cycle
reversal position;
Turn the plug counterclockwise and
push downwards the valve body. Use
a metal rod and a mallet;
Parts failure of the pneumatic motor;
Disassemble the motor and check;
Accelerated working and no
pressure of the pump
There is no product;
Add product;
The pump sucks air;
Open the exhausting valve. For
the version on air hoist, follow the
instructions in the relevant manual;
Feeding air is not enough;
Increase the feeding air pressure;
Suction valve worn or partially clogged;
Disassemble the suction valve. Clean
and/or replace if necessary the worn
parts;
Outlet valve worn or partially clogged;
Disassemble the outlet valve. Clean
and/or replace if necessary the worn
parts;
The pump works, but the product
is not flowing enough
Suction valve worn or partially clogged;
Disassemble the suction valve. Clean
and/or replace the worn parts;
Outlet product line clogged;
Clean. Disconnect the outlet product
pipe. Feed pump at minimum pressure
and check if delivery increases without
the outlet pipe;
The feed air pressure is too low;
Increase air pressure;
Leakage of product from the
lubricating cup
Upper gaskets worn.
Tighten the packing nut. In case of
persistent waste of product, replace
the upper gaskets of the pumping unit.
NOVA 10:1
14
ED.
01 - 09/2023 - Cod. 150209
IT
EN
N
