Lincoln Electric 11006 manual High Frequency Protection, Figure A-2

A-2 INSTALLATION A-2

3.Remove the head mounting block from the NA-3, NA-4, NA-5, or POWER FEED-10S head (if includ- ed) by removing the four allen head cap screws. This part is not used during the installation of the Spreadarc. Mount the head to the Spreadarc using the two 1/2-13 X 1.00 hex head screws, washers and lock washers supplied with the Spreadarc through the two large holes in the head mounting pad.(See Figure A-2)

Note: Before mounting an NA-5 or PF-10S head to the Spreadarc, in order to assure clearance between the motor connection box and the Spreadarc head mounting surface, the motor mounting to the gearbox should be rotated per the instructions below:

1.Remove the four screws mounting the gearbox assembly to the motor adapter plate, and remove gearbox.

The drive motor is to be in the vertical position and the drive rolls are to face the front. Loosen the head face plate clamp screw and rotate the face plate so that the idle roll arm is down. Install the nozzle, wire straight- ener and flux hopper (if used) per the NA-3, NA-4, NA-5, or PF-10S operating manual.

When using the K225 Twinarc nozzle, a K219 flux hopper and a standard head mounting on a travel car- riage, and when welding from left to right, a special 12" flux tube is required. The tube, which is included with the Spreadarc, may be trimmed to length to fit the installation. In addition, it is necessary to re-position the steel plate on the nozzle to which the flux hose retainer ring is attached. Remove the two screws holding this plate and rotate the plate 180° so the ring is closer to the bottom of the nozzle. Replace the screws.

2.Remove the three screws mounting the adapter plate to the motor, rotate the adapter plate 90° clockwise and replace the three mounting screws.

3.Remount the gearbox assembly with the four mounting screws.

HIGH FREQUENCY PROTECTION

Locate the Spreadarc away from radio controlled machinery. The normal operation of the Spreadarc may adversely affect the operation of RF controlled equipment, which may result in bodily injury or dam- age to the equipment.

FIGURE A-2

1/2-13 X 1.00

(2)HEX HEAD SCREWS

SPREADARC SHOWN WITH

THE POWER FEED-10S WIRE DRIVE

SPREADARC