Doc No. 740124 5
MODEL 9 SERIES WELD HEAD
OPERATION MANUAL
3.0 CABLE HOOK UP (contd.)
Fig. 4
Slide the boots together securely to protect the connectors and fittings from dirt,
and to prevent the power and ground connectors from coming in contact with
each other.
4.0 WATER COOLING
Most Model 9 series heads are plumbed for water cooling, and are cooled via the
power supply’s (optional) cooling unit. Although water cooling is not required for
all applications, it should always be used when welding tube or pipe wall
thicknesses of 0.065” (1.6mm) or heavier in the Model 9-500C or 0.083” (2.1mm)
or heavier in all the other water-cooled models 9 series heads. In addition, water-
cooling should always be used when doing high-duty-cycle work, regardless of
the tube wall thickness. Consult the factory for recommendations.
5.0 ROTATION (SPEED) AUTO-CALIBRATION
Before welding, the electrode rotation motor in the weld head must be calibrated
to the power supply. Most power supplies include an auto calibration function in
the software. Refer to the power supply operation manual for specifics on auto
calibration.
5.1 Should the power supply indicate that the weld head requires
calibration adjustment, the calibration potentiometer can be accessed
through the screw driver slot on the side of the return-to-home switch
housing. See fig. 5. Follow the instructions on your power supply in
making adjustments to the potentiometer.
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