Cold Feed/Gas Purge Switch; Light Switch; Heater Switch; Pressure Arm Adjustment - Lincoln Electric POWER FEED 25M Operator's Manual

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POWER FEED 25M & 25M ALUMINUM

COLD FEED/GAS PURGE SWITCH

Cold Feed and Gas Purge are combined into a
single spring centered toggle switch.
To activate Cold Feeding, hold the switch in the
UP position. The wire drive will feed electrode
but neither the power source nor the gas
solenoid will be energized. Adjust the speed of cold feeding by
rotating the WFS knob. Cold feeding, or "cold inching" the
electrode is useful for threading the electrode through the gun.
Hold with toggle switch in the DOWN position to activate Gas
Purge and let the shielding gas flow. The gas solenoid valve will
energize but neither the power source output nor the drive motor
will be turned on. The Gas Purge switch is useful for setting the
proper flow rate of shielding gas. Flow meters should always be
adjusted while the shielding gas is flowing.

LIGHT SWITCH

Turn on the internal light switch to
illuminate the inside of the Power Feed
25M

HEATER SWITCH

Turn the heater switch ON to warm the
inside of the Power Feed 25M. The heater is
useful for reducing condensation build-up on
the spool of wire. The heater is thermosta-
tically protected.

PRESSURE ARM ADJUSTMENT

COLD FEED
GAS PURGE
• Do not touch electrically live parts.
• When inching with the gun trigger, electrode and drive
mechanism are "hot" to work and ground and could
remain energized several seconds after the gun trigger is
released.
• Do not operate with covers, panels or guards removed or
open
• Only qualified personnel should perform maintenance
work.
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The pressure arm controls the amount of force the drive rolls exert
on the wire. Proper adjustment of pressure arm gives the best
ON
welding performance.
Set the pressure arm as follows (See Figure B.18):
LIGHT
OFF
ON
HEATER
OFF
B-34
WARNING
ELECTRIC SHOCK can kill.
• Turn the input power OFF at the welding power
source before installation or changing drive
rolls and/or guides.
Aluminum wires between 1 and 2
Cored wires between 2 and 3
Steel, Stainless wires between 3 and 5
FIGURE B.18
1
3 2
4
5
6
OPERATION
AL AL
FCAW FCAW
GMAW GMAW