Polysoude P6 - Gas Supply Connection; Gas Flow Control and Continuous Flow Option

THE ART OF WELDING
P6
24-92 PN-0509076 Rev. 16
Connection with the gas supply4. 2. 4.
The connection is made on the rear connector panel of the power source using the connectors delivered with
the machine.
On the gas source outlet (gas cylinder or manifold) litre fl owmeters should be used (see § 4.2.4 Spare parts) for
the fl owmeter reference. Before making any connections, briefl y open the gas valve to expel any impurities.
Fig.4.5, Fig.4.6 & Fig.4.7 - Rep.1 Gas 1
Fig.4.5, Fig.4.6 & Fig.4.7 - Rep.2 Gas 2
To ensure a successful welding cycle, please provide for a minimum of 2.5 L/min for Argon gas fl ow and 8 L/
min for Helium fl ow.
Continuous gas fl ow option for P6 with UHP welding head
A gas fl ow continuing outside the weld cycle can be obtained, if a UHP welding head is connected to a power
source which is equipped with the continuous gas fl ow option.
The fl owrate of this gas is controlled by:
a manual adjustment valve inserted into the circuit if the gas used (refer to Fig.4.6) is the same as the •
welding gas. The valve (Fig.4.6 - item A) is adjusted manually.
the litre fl owmeter installed in the gas source (cylinder or manifold) if the gas used (refer to Fig.4.7) is not •
the same as the welding gas. Connection is made at the rear of the generator at gas inlet 2).
Connection is made at the rear of the power source at gas inlet 2.
How it works
Depending on the power source confi guration, the gas fl ows as soon as the power source is switched on with a
rate set by the manual adjustment valve or the litre fl owmeter installed at the gas source.
When the welding cycle is started, with or without arc, the gas fl ow is switched to the welding gas with the rate
set by the litre fl owmeter on the welding gas source and ends when the post-welding gas timer has elapsed.
Afterwards the gas keeps on fl owing at the continuous gas fl ow rate.
As long as a UHP head is connected to the power source, the internal cooling circuit is inhibited.
Once the head is disconnected, the continuous gas fl ow is stopped.