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24
DRAGON
ED.
14 - 10/2020 - Cod. 150178
Make sure that the electrical system is earthed
and complies with regulations.
Fig. 1M
Fig. 2M
Fig. 3M
Fig. 4M
CORRECT PROCEDURE OF DECOMPRESSION
• Zero the pressure regulator knob
.
• Move the switch
(
M1
)
to the
OFF
(0)
position to stop the
equipment.
• Open the circulation - safety valve
(
M2
) to discharge the
residual pressure, always turning it anticlockwise.
Clamp inserted
Clamp released
• Point the gun at the tank
(
M3
)
of the product and press the
trigger to release pressure. At the end of the operation, insert
the gun clamp
(
M4
).
M4
OFF
M1
M2
M3
Problem
Cause
Solution
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.
M
WARNING
:
If the equipment is still under pressure after performing the operations above described because of the nozzle
or the flexible hose clogged, proceed as follows:
•
Loosen very slowly the gun nozzle.
•
Release the clamp.
•
Point the gun at the container of the product and press the trigger to release pressure.
•
Loosen very slowly the fitting of connection from the flexible hose to the gun.
•
Clean or replace the flexible hose and the nozzle.
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”)
.
