7
Installation
On the last page of these instruction manual a picture of the unit marked with symbols is located.
Please unfold and refer to this page in conjunction with the following instructions.
1. Mains connection
The units are factory connected to 400 V 50/60 Hz. They also can be used on 230 V 50/60 Hz and
500 V 50/60 Hz mains. The wiring instruction for reconnection is located inside of the machines
near the input terminal (460V 50/60Hz option).
Important!
In case the machines are used with 230 V mains voltage, the mains
cable delivered must be replaced by one with a bigger cross section.
230 V
400/460/500 V
PLW 202
4 x 4 mm²
4 x 2,5 mm²
PLW 402
4 x 10 mm²
4 x 4 mm²
The mains plug must comply to country regulations and must be connected by an electrician. Check
the mains voltage before the machine is switched on.
2. Coolant
Pull the plastic plug of the cooling unit and check the water level. Liquid level should be about 3 cm
(1“) below the filling hole. If not, top up the tank using LoDuct cooling fluid.
Caution!
Electrolytic corrosion may shorten the live time of the torch, when normal mains
water is used
Lo Duct contains glycol. Do not give access to children. Injurious to health
when drunk.
3. Gas connection
At the rear of the machine a cylinder mounting position is provided. The cylinders must always be
secured with the chains. Fit the regulators and the gas hoses for Ar/H
2
and Ar to the cylinders.
Connect the other ends of the hoses to the corresponding connections clearly marked on the back
side of the machines. Open the valve of the bottle slowly and adjust the gas pressure to 6 bar.
Optional two different flow meter slide-in modules are available. It depends on the welding
application which type of flow meter slide-in module is required.
Welding gas:
Pilot gas:
Slide-in module: Standard at:
0 - 20 l/min
0 - 1 l/min
1 261 046
PLW 202
0 - 12 l/min
0 - 7 l/min
1 261 035
PLW 402
4. Torch connection
The manual welding torches PT 75 and PT-150 as well as the machine torches PT-8 and PT 300 can
be connected with the central connector easily and without tools. Make sure, that the water in- and
outlet hoses are connected to the corresponding colour coded quick connections.
At socket
A
the control plug is connected, when manual torches are fitted, whereas a foot switch has
to be fitted to this socket, when machine torches are used.
The pilot circuit is connected to the torch via socket
C
.
