Lincoln Electric SVM135-B service manual Ratio Change Procedure

A-10 INSTALLATION A-10

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RATIO CHANGE PROCEDURE

1.Pull open the pressure door.

2.Remove the Phillips head screw retaining the pinion gear to be changed and remove the gear. If the gear is not easily accessible or difficult to remove, remove the feed plate from the gearbox.

To remove feed plate:

a.Loosen the clamping collar screw using a 3/16 in. Allen wrench. The clamping collar screw is accessed from the bottom of the feed plate. It is the screw which is perpendic- ular to the feeding direction.

b.Loosen the retaining screw, which is also accessed from bottom of feeder, using a 3/16 in. Allen wrench. Continue to loosen the screw until the feed plate can be easily pulled off of the wire feeder.

3.Loosen, but do not remove, the screw on the lower right face of the feed plate with a 3/16 in. Allen wrench.

4.Remove the screw on the left face of the feed plate. If changing from high speed (larger gear) to low speed (smaller gear), line the upper hole on the left face of the feed plate with the threads on the clamping collar. Line the lower hole with the threads to install larger gear for high speed feeder. If feed plate does not rotate to allow holes to line up, further loosen the screw on right face of feed plate.

5.Remove the small gear from the output shaft. Lightly cover the output shaft with engine oil or equivalent. Install gear onto output shaft and secure with flat washer, lock washer, and Phillips head screw which were previously removed.

6.Tighten the screw on lower right face of feed plate.

7.Re-attach feed plate to wire feeder if removed in Step 2.

8.Feed plate will be rotated out-of-position due to the gear change. Adjust the angle of the feed plate by loosening the clamping collar screw (Step 2a) and pivoting feed head.

9.Set the High/Low switch code on Feed Head PC board as follows:

a.Power down the Power Feed by turning off its campanion Power Wave power source. For maximum safety, disconnect the control cable from the Power Feed.

b.Remove the cover from the back of the feed head (2 screws).

c.Locate the 8-position DIP switch near the top edge of the PC board, centered left to right. The setting will be made on the right most switch, S8.

d.Using a pencil or other small object, slide the switch down, to the “0” position, when the low speed gear is installed. Conversely, slide the switch up, to the “1” position, when the high speed gear is installed. Refer to Figure A.6.

e.Replace the cover and screws. The PC board will “read” the switch at power up, automati- cally adjusting all control parameters for the speed range selected.

POWER WAVE 455/POWER FEED 10