7
521B0881 DKCFN.PI.020.F1.02
10. Commissioning:
Bleeding the filter
Turn on the water and open the ball valve. Press the red button several
times to bleed the filter housing. Repeat until no more air escapes from
the filter, just water.
Bleeding the pump
Untighten the bleeding plug of the pump approximately one-two
revolutions. Bleed the pump until no more air escapes from the pump.
Close and tighten the bleeding plug!
Repeat the bleeding procedure for filter and pump after short
operation of the pump to prevent any remaining air from accumulating
in the pump.
Direction of rotation
Check the direction of rotation of the motor by briefly starting the
motor and watch the cooling fan. During this, the high-pressure
connection should not be connected (pressure less testing.) The fan
wheel has to turn clockwise. Compare with the arrow on the pump
or pump support.
If the direction is incorrect, swap two supply phases and check
again. With units with drive motor FCM 300 please check the
programming (see section on programming of the FCM 300 below).
Flushing the system
The Plug&Spray
TM
units are protected from factory against corro-
sion and frost with MPG (monopropylene glycol). Flush the system
thoroughly before connecting the application to the high-pressure
discharge connection.
Insufficient flushing can cause bacteria growth resulting in health
problems!
Adjusting the pressure relief valve
A pressure relief valve, type VRH 30 CA cartridge is installed in the
common connection block of the Plug&Spray
TM
units allowing adjusting
the discharge pressure between 25 and 140 bar.
Adjust the desired pressure at zero flow, by means when all nozzles
(consumers) are not in operation.
In units with variable speed, the relief pressure valve should always
be adjusted slightly higher than the PID controller set point, i.e. at set
point 70 bar, set the relief valve to at least 80-85 bar.
Untighten the retaining nut, turn the adjustment screw until the
desired pressure is read on the manometer, and tighten the retaining
nut to fix the setting.
