Operation Manual
10
A7 TIG Orbital System 300© Kemppi Oy 2016 1615
OPERATING MANUAL
2.2 Water cooler
The controller unit includes an integrated water cooler.
The water ow is factory calibrated, and interruption in,
or insucient water ow (less than 0.5 LPM), will result
in termination of welding and a warning message on the
display.
2.2.1 Filling water cooler with coolant
Cooling and heat-balancing requires that cooling water is
pure. However, the degree of water purity as well as the
temperature of the environment determine if you need to
apply additives and/or otherwise take care of the water
supply. You can ll the water tanks with normal tap water.
When employing TIG system at temperatures below +8
°C, add an anti-freeze medium.
1. Fill the water tank with 3.5 liters of Kemppi torch
coolant uid or equivalent (Monopropylenglycol).
2. Use max. 40 % of coolant uid added to water. This
will provide freezing protection to ‐25 °C.
Do not use distilled or demineralized water. Zinc
deciency causes corrosion and a risk of leakage.
Even if the temperature stays above +8 °C, use a
small quantity (ca. 10 %) of anti-freeze additive. It prevents
adverse algal growth in warm water.
The amount of cooling uid required depends on the cable
length of the weld head. Normally, 3.5 litres is sucient.
Check the level of coolant after several minutes of rst
turning on power to top o the coolant level as required.
2.2.2 Operating the water flow
The water ow switch has a factory pre-set trip point
that is not adjustable. If there is inadequate water ow
to actuate the switch, a welding arc cannot be initiated.
Pressing Start Weld causes pre‐purge to occur. When
the arc should be initiated, the starting sequence is
interrupted and a warning displays.