3-4. Installing Optional Spool Gun Switch In Welding Power Source

! Turn off and disconnect in- put power.

1 Welding Power Source Center

Baffle

2

1

2

Switch Location

 

 

3

Switch Mounting Plate

 

 

Remove 2 screws securing switch

 

 

mounting plate to center baffle. Pull

 

 

switch mounting plate to pull wiring

 

 

harness through center baffle hole.

 

 

4

Plastic Plug

 

 

Remove and discard plastic plug

 

 

from center hole in switch mounting

 

 

plate panel.

 

 

5

Nylon Cable Tie

 

 

Cut and discard nylon cable tie.

 

 

6

Jumper Plug

 

 

7 Wiring Harness Switch Plug

 

 

Remove jumper plug from wiring

 

 

harness switch plug. Retain jumper

 

 

plug by placing looped lead over

 

 

unit wiring harness.

3

 

8

Switch Plug

 

 

Connect switch plug to wiring har-

 

 

ness switch plug.

 

 

9

Jam Nut

 

 

Remove top jam nut from switch

 

 

(switch is equipped with two nuts, a

 

 

jam nut and a backing nut).

9

8

Insert switch shaft through switch

mounting plate. Switch should be

 

 

positioned so lead with resistor is

 

 

facing down.

 

7

Secure switch to plate with jam nut.

 

5

Tighten jam nut enough to keep

 

3

switch from rotating.

 

 

Push wiring harness back through

 

 

hole, and reinstall switch mounting

 

4

plate to center baffle.

 

Operation:

Tools Needed:

 

 

Place switch in On position for

1/4 in.

 

6

spool gun operation. Place switch

 

in Off position for wire feeder/MIG

9/16 in.

(GMAW) gun operation.

 

 

When spool gun switch is in On

 

position, spool gun wire feed speed

 

is controlled by welding power

 

source Wire Speed control.

802 936-A

OM-226 857 Page 12

Page 16
Image 16
Hobart Welding Products 3035-20, 3545-20 manual Turn off and disconnect in- put power, Operation