www.larius.com
25
THOR
ED.
17 - 09/2020 - Cod. 150096
PROBLEMS AND SOLUTIONS
L
Problem
Cause
Solution
The equipment does not start
Lack of voltage;
Check the correct connection to the power supply;
Considerable drops in mains voltage;
Check the extension cable;
On/Off switch disconnected;
Ensure the On/Off switch is on the “on” position and
turn clockwise the pressure control knob;
Breakdown of pressure transmitter;
Verify and replace it, if necessary;
Breakdown of motor electric control box;
Verify and replace it, if necessary;
The line of material coming out of the pump
is already under pressure;
Open the drain valve to release pressure in the circuit;
The product is solidified inside the pump;
Open the drain valve to release pressure in the circuit
and stop the machine. Disassemble the pumping group
and the pressure transmitter and clean;
The equipment does not suck
the product
Suction filter clogged;
Clean or replace it;
Suction ilter too fine;
Replace it with a larger-mesh filter (with very dense
products, remove the filter);
The equipment sucks air;
Check the suction pipe;
The equipment sucks but does
not reach the pressure desired
Lack of product;
Add the product;
The equipment sucks air;
Check the suction pipe;
The drain valve is open;
Close the drain valve;
The gaskets of the pumping group are worn;
Replace the gaskets;
Suction or delivery valve dirty;
Disassemble the pumping group;
When pressing the trigger, the
pressure lowers considerably
Nozzle too big or worn;
Replace it with a smaller one;
The product is too dense;
Dilute the product, if possible;
The filter of the gun-butt is too fine;
Replace it with a larger-mesh filter;
The pressure is normal but the
product is not atomized
The nozzle is partially clogged;
Clean or replace it;
The product is too dense;
Dilute the product, if possible;
The filter of the gun-butt is too fine;
Replace it with a larger-mesh filter;
The atomization is imperfect
The nozzle is worn;
Replace it;
When releasing the trigger of
the gun, the equipment does not
stop (the motor runs slowly and
the piston rod keeps on going up
and down)
The gaskets of the pumping group are worn;
Replace the gaskets;
Suction or delivery valve dirty;
Disassemble the pumping group and clean;
Drain valve defective;
Verify and replace it, if necessary;
Material escaping from the cap
Material leaking from the O-Ring.
Replace the O-Ring.
Always close the air compressed supply and unload the plant pressure before performing any check or replacement
of pump parts
(see “correct procedure of decompression”)
.
