Lincoln Electric IM408 MAGNUM SG SPOOL GUN - Manual (Page 10)

a. Wire drive release lever up position moves
pressure roller away from drive roll to stop wire
feed. Down position moves pressure roller to
wire. Operate wire drive release lever and see
pressure roller move.
b. Drive roll with two wire grooves. Narrow groove
feeds .023 through .035 inch (.6-.9 mm) diameter
wire. Wide groove feeds 3/64 inch (1.2 mm)
diameter wire. Gun is shipped with narrow
groove in operating position (toward handle).
Reverse roller for 3/64 inch (1.2 mm) diameter
wire.
5. Gas nozzle directs gas flow around arc. Gas cone
can be pulled off about 1/4 inch (6 mm) if user
needs more shielding around arc. Pull off gas cone
to see contact tip and gas diffuser. Spool gun is
shipped with .035 inch (.9 mm) contact tip installed.
6. Electrode wire spool cover. Remove by unscrewing
knob. Electrode wire goes into gun through rear
plastic tube. Knurled nut adjusts wire spool braking.
7. Cable assembly for power, control, and gas.
Reassemble gun with spool of wire in spool holder.
Hold gun and become familiar with gun’s weight
and balance.
Spool Gun Installation
The spool gun attaches easily to CV type welders
through the Magnum SG Control Module. The spool
gun also attaches easily to Lincoln models SP-150,
SP-200 and SP-250 power sources and may be adapted
to other similar welders.
Connection to K488 Magnum SG Control Module
1. The K487 Spool Gun connects directly to the
K488 Control Module. With this connection,
the remote wire speed control, in the gun
handle, becomes active. For further details
regarding the connection, consult the K488
Control Module Operating Manual (IM398).
2. The control module allows the spool gun to
be used with any welder possessing the
following characteristics:
a. A constant voltage type welding output.
b. A 115 VAC control circuit output.
c. An output contactor internally or ex-
ternally energized with closure or 115
VAC, respectively.
NOTE: A constant voltage welder without a
contactor may be used, but the electrode wire
will always be electrically “hot”, even when gun
trigger is not activated.
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SPOOL GUN FAMILIARIZATION