9
NOVA 45:1/60:1
English
M
PROBLEMS AND SOLUTIONS
Solution
Cause
Problem
•
The pump does not start
•
Accelerated working and no pres-
sure of the pump
•
The pump works, but not sufficient
flow of product
•
Leakage of product from the wet
cup
• Feed air not sufficient;
• 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;
•
Feed air not sufficient;
•
Suction valve worn or partially clog-
ged;
•
Outlet valve worn or partially clog-
ged;
• Suction valve worn or partially clog-
ged;
• Outlet product line clogged;
• The feed air pressure is too low;
•
Upper gaskets worn.
• Check the air supply. Widen the
diameter of the feed hose;
• Clean. Disconnect the outlet product
pipe. Feed pump at minimum pres-
sure 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 bleeder valve. For ram
version, follow the instructions in the
relevant manual;
•
Increase the feed 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 pres-
sure 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
element.
Always close the compressed air supply and release the pressure in the plant before performing any check or
replacement of parts of the pump.
N
These safety instructions refer to the installation, use and main-
tenance procedures for
NOVA
series
LARIUS
pneumatic piston
pumps for decanting. These pumps are designed for use in poten-
tially explosive areas where gas or vapours are present.
NOVA series LARIUS pneumatic piston pumps
are group II mechanical devices for use in the
presence of gas in zones classified as IIB (category
2 G). They have been designed and constructed in
accordance with ATEX Directive 94/9/EC and the
European standards: EN 1127-1, EN 13463-1ed
EN 13463-5.
These instructions must be followed in addition to
the warnings given in the user and maintenance
manual.
DESCRIPTION FOR EXPLOSIVE AREAS
