Maintenance; Routine Maintenance; Drive Rolls And Guide Tubes; Wire Reel Mounting - 50 And 60 Lb. Coils - Lincoln Electric IM355-C LN-9 GMA Operator's Manual

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SAFETY PRECAUTIONS
WARNING
ELECTRIC SHOCK can kill.
• Only qualified personnel should
perform this maintenance.
• Turn the input supply power
OFF at the disconnect switch or
fuse box before working on this
equipment.
• Do not touch electrically hot parts.

ROUTINE MAINTENANCE

DRIVE ROLLS AND GUIDE TUbES

After feeding any coil of wire, inspect the drive roll sec-
tion. Clean it as necessary. Do not use a solvent for
cleaning the idle rolls(s) because it may wash the lubri-
cant out of the bearing. The drive roll(s) and guide
tubes are stamped with the wire sizes they will feed. If
you use a wire size other than that stamped on the
rolls, the roll(s) and guide tubes must be changed.
The drive rolls for 0.035 and 0.052 cored electrode and
1/16 through 7/64 electrode have a double set of teeth
so they can be reversed for additional life. Drive rolls
for 0.023 through 0.052 solid electrodes and aluminum
sizes have no teeth, but use two grooves so they also
can be reversed for additional life.
See the Operation Section for drive roll installation
instructions.
See Table C.2 in the Accessories section for drive roll
and guide tube kits.

MAINTENANCE

WIRE REEL MOUNTING - 50 AND 60 Lb.
COILS WITH 1" SPINDLE
To prolong the life of the reel shaft, periodically coat it
with a thin layer of grease. No maintenance of the two-
position adjustable brake is needed. If the brake shoe
wears through to metal, replace the brake assembly.
WIRE REEL MOUNTING - READI-REELS
AND 10 THROUGH 44 Lb. SPOOLS AND
50 AND 60 Lb. COILS WITH K1504-1
ADAPTER
No routine maintenance required. Do not lubricate the
2" spindle.

PERIODIC MAINTENANCE

CONTROL bOX

Every six months open and inspect the control section.
The accumulated dirt should be gently blown off all of
the electrical components. Be sure the air that is being
used is dry. Check the contacts of the large plug-in
relay.
A spatter resistant shield protects the digital meter.
This shield must always be installed. If it breaks or
becomes damaged, replace it by removing the two
screws securing its frame, installing a new shield, and
reattaching the frame.

WIRE DRIVE MOTOR AND GEAR bOX

Every year examine the gearbox. Paint the gear teeth
with molydisulfide-filled grease (Lincoln specification
E2322). Do not use a graphite grease.
Check the motor brushes. Replace if they are worn
down to 1/4" or less. When ordering feed motor brush-
es, give all information from the motor nameplate.
LN-9 GMA and LN-9F GMA Wire Feeder
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