Doc No. 740123
17
MODEL 8 SERIES WELD HEAD
OPERATION MANUAL
11.0 STORAGE
If the weld head has been used with water-cooling, and is to be stored for
more than 1 month, the residual water or water/coolant mix should be
purged from the hoses and weld head to minimize internal corrosion.
This is also important if the weld head is to be stored where the
temperature might fall below freezing, as trapped water can freeze and
damage weld head and/or hose internals.
Although you may not be storing the adapter and /or extension cables,
leave them hooked up to the weld head when purging out the water.
11.1 To drain the coolant from the weld head and cables, use Arc
Machines, Inc. fitting part number 294-PB-06. Unplug the water
“supply” line from the cooling unit, (leaving the water “return” line
connected to the cooling unit) and attach the (female) fitting
(294-PB-06) to the disconnected “supply” line. See Fig. 18.
Fig. 18
11.2 Using a pressurized air source of maximum 20 PSI, (139 Kp)
(1.38 Bar) blow air into the fitting to force the water out of the cables
and weld head, and back into the cooling unit. See Fig. 18.
CAUTION, DO NOT USE AIR PRESSURE
ABOVE 20 PSI (139 Kp) (1.38 Bar)
