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10
CONTR
OLS
overheating or meltdown.
Note. Water flows into the torch through the blue
hose. The blue hose delivers cold water directly
to the prime source of heat, the swan neck and
consumables. The re circulated water is then passed
through the torch power cable to cool the power cable
as it is returned to the cooler through the red water
return lead.
Ensure all air is removed from the water cooling circuit
before welding.
5.9 Work return lead connection
Insert the work return lead connector into the
receptacle on the front panel of the machine and twist
it clockwise until tightly secured.
Connect the earth clamp to the work piece as close as
possible to the point to be welded and ensure that a
good electrical connection is created to bare metal.
Note the XTM403SW has 2 work return lead sockets
providing different inductance settings refer to the
Operating instructions for your preferred setting.
5.10 Shielding gas connection
1. Connect gas hose to the output connection of a
gas regulator capable of supplying the correct gas
flow for the welding operation.
Note if the gas cylinder is to be stored on the back of
the machine ensure it is secured using the retention
chain provided
5.11 Water cooling system
Dependant upon the type of torch to be use the
water cooling system can be disabled or enabled as
required. Move the selector switch on the front panel
the enable or disable the water pump.
Note The use of a water cooled torch with the water
cooled disabled will cause permanent damage to the
torch.
For operation with a water cooled torch ensure the
following
a) Selector switch on the front panel is moved to the
on position.
b) The water tank is filled with Parweld Ultra Cool
coolant so that the level is at the maximum level in the
sight glass at the rear of the machine.
c) All the inter connecting water hoses are secure
d) Switch on the machine and allow the water to flow
through the system for 2 minutes to ensure all air is
purged and the system is fully primed. Switch off the
machine and check the coolant level topping up to
maximum as required.
Note:- Operation with coolant other than Parweld
Ultra cool can lead to blocking of the system and
also premature seal failure, such failures will not be
covered under warranty.
6.0 Operation
1. Switch on the machine using the switch no the
front panel, this lights the Green LED on the front
panel.
2. Turn the “VOLTAGE SELECTOR” switches Set
voltage midway between high/low voltages.
NOTE: Check that drive rolls, and torch parts are
correct for the wire size and type being used. If
using a water cooled torch ensure the water pump
selector switch is in the on position and all water
hoses are connected and the water tank is full of
Ultra cool coolant.
3. The optimum idle roll pressure varies with
type of wire, wire diameter, surface conditions,
lubrication, and hardness. As a general rule, hard
wires may require greater pressure, and soft, or
aluminium wire, may require less pressure than
the factory setting. The optimum idle roll setting
can be determined as follows:
4. Press end of gun against a solid object that is
electrically isolated from the welder output and
press the gun trigger for several seconds.
5. If the wire “bird nests”, jams or breaks at the
drive roll, the idle roll pressure is too great. Back
the adjustment knob out 1/2 turn, run new wire.
If the only result was drive roll slippage, loosen
the Hand nut on the central connector and pull
the gun forward about 6” (15cm) away from the
power source. There should be a slight waviness
in the exposed wire. If there is no waviness, the
pressure is too low. Tighten the adjustment knob
1/4 turn, reinstall the gun cable and repeat the
above steps.
6.1 Feeding wire electrode
Note when triggering, the electrode and drive
mechanism are electrically “LIVE” relative to work and
ground and remain “LIVE” several seconds after the
gun trigger is released.
WARNING
When using an open arc process, it is necessary to use
