11
4
SETTING BEFORE USE
• ONLY use clean water for any intervention or adjustment without any chemical
additives.
• Observe rated power supply voltage.
• Make sure to disconnect power to the device before arc welding; consider physical
-
ly disconnecting the power supply cables.
• The hook-up diagram shown in Fig. 5 is for illustrative purposes only; standard unit
adjustment procedure may vary depending on which control device is used.
• All indications on installation, adjustment and operation reported below are inten
-
ded for the unit installed in the standard mounting position (Fig. 3).
• For detailed information on the operation or adjustment of the valves included in
the unit, ALWAYS refer to the operating and maintenance instructions manual rele
-
vant to your control device.
• All electric valves are internally protected: they automatically turn off in case of
over-voltage; to reset the valves, remove power supply to the unit for about 20 secon
-
ds.
• Pressure readings are indicated by the pressure gauge or displayed at the control
device (where unit is equipped with a pressure transducer).
4.1
Electric unit adjustments before operation
1
Install pressure gauge or pressure transducer to the seat in the pressure
gauge adapter.
• Pressure gauge:
Screw into pressure gauge adapter seat until firmly in place; do not
overtighten.
Use ARAG pressure gauges with 1/4" M coupling and a suitable end
scale for the maximum operating pressure.
• Pressure transducer:
Use ARAG transducers
(code 466112.x00)
; please read the instructions
manual supplied with the device for full installation information.
• Make sure the flat gaskets supplied with the control unit are
correctly positioned in the pressure gauge adapter seat.
• Nylon adapter = n°1 gasket
• Brass adapter = n°2 gaskets
2
Open the discharge valve with the switch on the control unit (set to ON).
CONTINUES
