OM-626 Page 13
4-4. Connecting Coolant Hoses
CAUTION
INCORRECT HOSES will damage unit.
• Use hoses compatible with coolant such as Neoprene, Buna-N, Hypalon, or equivalent.
• Incorrect hoses will degrade and plug or damage the coolant system.
OVERHEATING Gas Tungsten Arc Welding (GTAW) torches and Gas Metal Arc Welding (GMAW) guns can
damage torches and guns.
• If using a water-cooled torch/gun and recirculating system, do not make connections from the coolant system to a water valve; instead, make
connection directly from the coolant system to torch/gun hoses.
Ref. ST-137 226-C / Ref. ST-153 246
Obtain two coolant hoses with
proper fittings. Fittings have 5/8-18
left-hand threads. Use high quality
hoses without carbon or steel rein-
forcing. To decrease corrosion, use
fittings made of materials listed in
Figure 4-4.
1 Coolant Out Fitting
2 Coolant In Fitting
See Section 4-1 for typical hose
connections.
Tools Needed:
5/8 in
1
2
Figure 4-5. Connecting Coolant Hoses
4-5. Connecting Input Power
WARNING
ELECTRIC SHOCK can kill.
• Do not touch live electrical parts.
• Do not attempt to get 115 volts ac from the 230 volts input terminals on the welding power source.
• If 115 or 230 volts ac is not available, use an auxiliary power supply.
• Connect power cord to a proper receptacle.
ST-159 385
1 Grounded Receptacle
2 Input Power Cord And Plug
PLG1
Connect input power plug to a prop-
er receptacle.
1
2
Figure 4-6. Input Power Connections
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