Last Update: 30/01/2017
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.
Wiring Connection
For the connection of the wiring, see the chart in
fig.1
ELECTRIC LIFE OF THE CONTACT
The electric circuit inside the sensor consists of a reed switch, which can work at up to 1 million operations. Current
and/or voltage values higher than the permitted limits damage the contacts remarkably thus reducing their electric life
(gluing or “craters” on the moving plates). In order to prevent these phenomena, it is necessary to value, the transitory
system, in which the starting current can be 10-12 times stronger than the standard current. The cut-off of inductive loads
can take the circuit to potential difference values (ddp) of thousands Volts. Thus, pay attention to such situations of
overload and over voltage, showing either at the start when the circuit closes up (starting currents) and at the stop when
the circuit opens up (disconnecting voltage). In order to avoid these problems it is necessary to provide the system with
adequate protections. There are various suitable circuits, one of the most common and effective is shown in
fig.2
