Foot Pedal Connection; Rear Panel; Front Panel (Fig. 12) - Helvi COMPACT 400 Manual De Instrucciones

• Do not forget to slightly open and then close
the tap of the cylinder to eliminate any impu-
rities.
• Assemble the pressure regulator on the
cylinder, after making sure that the gas fl ow
regulation knob is loose.
• Make sure the connector is tightened before
opening the cylinder tap.
• Assemble the connection on the gas tube of
the generator and the gas tube to the exit of
the pressure regulator.
• Slowly open the cylinder tap. During welding,
gas fl ow is a function of the parameters and ac-
cessories of the welding. The regulation range
is normally between 5 and 15 liters per meter.
Note: Additional information on how to work
safely with gas, please carefully read the PRO-
TECTION GAS paragraph of this document.
WATER COOLER CONNECTION (FIG.11)
(optional arrangement)
• Locate the plate
for the water cooler
connection inside
the generator, on
the bottom back
left side.
• Connect the po-
wer cable and the
pressostat cable as
shown in the label
affi xed close to the
connection plate.

FOOT PEDAL CONNECTION

• Connect the foot pedal 14 pin plug to the
rear panel of the machine into socket B.
• To activate the foot pedal select button 8 on
the front panel of the machine. As soon as the
remote control is activated on the pedal, the
machine can work only in 2T mode. The arc
striking is done pressing on the pedal. Current
adjustment is done using the pedal, from its mi-
nimum value to Iw that was preset on the front
panel before activating the remote control.
ISTRUCTIONS OF USE

FRONT PANEL (FIG. 12)

1. Control panel
2. Regulation knob for welding current and
welding parameters
3. Display showing the preset parameters,
voltage or current during welding
4. Negative Dinse plug (-): Connect the
5. Positive Dinse plug (+): Connect the
6. Attachment for the connection of the torch
7. Connector for the torch button cable
1
2
7
5
Fig. 11

REAR PANEL

A. Generator start/stop (ON/OFF) switch
B. 14-pole connector for the manual or pedal
remote control cable
D. Power cable
E. Connector for the protection gas tube for
TIG arc welding
ground lead or the electrode holder pin-
cers in case of MMA welding (depending
on the polarity requested by the electro-
de, printed on the packaging) and the
torch in case of TIG welding
ground lead or the electrode holder pin-
cers in case of MMA welding (depending
on the polarity requested by the electro-
de, printed on the packaging) and the
ground lead in case of TIG welding
gas tube
Fig.12
E D
Fig.13
3
6
4
B
A
27