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nova 55:1 ext
TROUBLESHOOTING
M
Problem
The pump does not start
Accelerated working and no pressure
of the pump
The pump works, but the product is
not flowing enough
Leakage of product from the
lubricating cup
Always close the compressed air supply and release the pressure in the plant before performing any check or
replacement of parts of the pump.
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12
Possible cause
Feeding air is not enough;
Outlet product line clogged;
Dried product inside the pumping element;
pneumatic motor blocked in the cycle
reversal position;
parts failure of the pneumatic motor;
There is no product;
The pump sucks air;
Feeding air is not enough;
Suction valve worn or partially clogged;
Outlet valve worn or partially clogged;
Suction valve worn or partially clogged;
Outlet product line clogged;
The feed air pressure is too low;
Upper gaskets worn.
Solution
Check the air supply. Increase the
diameter of the feeding hose;
Clean. Disconnect the outlet product
pipe. Feed pump at minimum pressure
and check if the pump starts without
the outlet pipe;
Disassemble the pumping group and
clean;
Turn the plug counterclockwise and
push downwards the valve body. Use
a metal rod and a mallet;
Disassemble the motor and check;
Add product;
Open the exhausting valve. For
the version on air hoist, follow the
instructions in the relevant manual;
Increase the feeding air pressure;
Disassemble the suction valve. Clean
and/or replace if necessary the worn
parts;
Disassemble the outlet valve. Clean and/
or replace if necessary the worn parts;
Disassemble the suction valve. Clean
and/or replace the worn parts;
Clean. Disconnect the outlet product
pipe. Feed pump at minimum pressure
and check if delivery increases without
the outlet pipe;
Increase air pressure;
Tighten the packing nut. In case of
persistent waste of product, replace
the upper gaskets of the pumping unit.
ED. 06 - 07/2020 - Cod. 150152
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