Miller Electric SS-75S12 Removing Safety Collar And Adjusting Boom, Gun Recommendation Table, All

4-8. Removing Safety Collar And Adjusting Boom

1

Tools Needed: 1-1/8 in

4 3

2	Rod	4
	Rod	3
		2

Increasing Spring	Decreasing Spring
Pressure For A	Pressure For A
Heavy Gun	Light Gun

1 Locking Knob

Tighten knob to prevent boom movement. Loosen knob to allow boom movement. Change knob po- sition to limit upward movement.

Pull boom down slightly and remove safety collar. Boom should balance in any position from horizontal to 60 degrees above horizontal. If neces- sary, adjust boom as follows:

2Threaded Rod

3Jam Nut

Loosen jam nut and turn threaded rod until boom balances. Tighten jam nut. Be sure several full threads are through yoke to prevent boom falling.

4 Yoke

Retain safety collar for use in disas- sembling or moving boom.

Ref. ST-152 380-A

4-9. Gun Recommendation Table

Process	Gun
GMAW − Hard or Cored Wires	Q-Series Guns: 300, 400, 500, And 600 Amp.
FCAW − Self-Shielding Wires	FC-1260 Or FC-1150

4-10. Wire Type, Size, And Feed Speed Capability Table

Motor Speed	Wire Type	Wire Size	Feed Speed Capability
Standard	All	.023 To 5/64 in (0.6 To 2 mm)	50 To 1400 ipm (1.3 To 35.6 mpm)

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