Last Update: 07/07/10
2
DIMENSIONAL DRAWING
INSTRUCTIONS
This product is to be utilized with clean fresh water, even slightly additivated with normal detergents. For use involving
different or corrosive liquids, contact the PA Technical department. Appropriate filtration should be installed when using
unclean liquids. Choose the gun in line with the data of nominal running (system rated pressure, max flow and max
temperature). In any case, the pressure of the machine should not exceed the permissible pressure rate imprinted on the
gun.
INSTALLATION
This gun was designed to operate with hot water (in compliance with the technical specs). Provide the plant generating
hot water with an equipment limiting the incidental increase of the fluid temperature.
Always fit a safety valve to protect the delivery conduct when the latter is under pressure.
Choose a suitable nozzle and ad just the valve mounted in the front of the gun, thus obtaining a constant supply and
avoiding unpleasant pressure spike when closing the system.
If the nozzle wears out, the pressure falls. When you install a new nozzle, adjust the system back to the original
pressure.
OPERATIONS
The gun opens and closes a high pressure conduct by means of a piston acting on a seat; the return is controlled by a
spring which releases the trigger. Attention: during pump activation always set the gun with its safety latch
connected in order to prevent accidental openings
WATER HOSE FEED
By high or very unsteady pressure values on delivery, it is necessary to mount a pressure reducer , both to level the flow
rate on delivery and to protect the system components
.
PROBLEMS AND SOLUTIONS
PROBLEMS
PROBABLE CAUSES
SOLUTIONS
Leakage from the nozzle
Presence of impurities
Gun seat worn out
Clean
Replace the seat
Fit adequate filters and/or check
Leaking seals
Seals worn out
Replace seal
Difficult trigger opening
High pressure inside circuit
Check the bypass valve and adjust it if necessary
