Miller Electric DWF3 - Manual (Page 9)

SECTION 2 INSTALLATION
OM-179 078 2-1
2.1 GENERAL SET–UP
A standard DWF–3 system is illustrated in Figure 2.1 with the necessary interconnections shown for a typical
installation. The parts are listed below:
DWF–3 (.020 – .062)
CONTROL UNIT 179 166
WIRE DRIVE UNIT 179 164
WIRE GUIDE ASSEMBLY 179 165
2.2 CONTROL UNIT LOCATION
The control unit should be placed in a location which provides easy access to the controls and proper air
ventilation for cooling. Adequate ventilation is provided by maintaining a minimum of 5 in (127 mm) of
unrestricted space between the control unit sides and rear and the nearest obstruction. The location should be
selected to minimize any dust, dirt, moisture or corrosive vapors the control unit could be subjected to. Control
unit outline dimensions are given in Figure 2.2.
CAUTION
THE CONTROL UNIT CAN OPERATE ON EITHER 100/120 VOLTS OR 208/230 VOLTS AC, 50 OR 60 HZ.
BE SURE TO SELECT THE PROPER INPUT VOLTAGE ON THE REAR PANEL BEFORE CONNECTING
TO POWER.
2.3 WIRE DRIVE UNIT MOUNTING
Figure 2.3 is an outline and a mounting dimension guide. The drive unit may be mounted using the inlet guide
surface or the bottom surface (opposite the adjusting knob) through use of the existing tapped holes in the
housing. The wire drive exit guide has a 7/16 – 20 UNF external thread for mating with the supplied wire guide
conduit for a DWF–3 system.
CAUTION
IN APPLICATIONS WHERE HIGH FREQUENCY OR CAPACITIVE DISCHARGE START IS USED THE
DRIVE HOUSING SHOULD BE GROUNDED TO THE SAME POTENTIAL AS THE WORKPIECE. THIS
WILL PREVENT POSSIBLE DAMAGE TO THE WIRE FEED DRIVE,CAUSED BY ARCING. GROUNDING
CAN BE ACCOMPLISHED THROUGH THE UNUSED THREADED MOUNTING HOLES IN THE DRIVE
HOUSING.