Lincoln Electric POWER MIG 210 MP Manuel De L'opérateur page 24

POWER MIG ® 210 MP
ROUTINE MAINTENANCE
Before carrying out service, maintenance and/or
repair jobs, fully disconnect power to the machine.
Use Personal Protective Equipment (PPE), including
safety glasses, dust mask and gloves to avoid
injury. This also applies to persons who enter the
work area.
MOVING PARTS can injure.
• Do not operate with doors open or guards off.
• Stop engine before servicing.
• Keep away from moving parts.
Have qualified personnel do all maintenance and
troubleshooting work.
GENERAL MAINTENANCE
In extremely dusty locations, dirt may clog the air passages causing
the welder to run hot. Blow dirt out of the welder with low-pressure
air at regular intervals to eliminate excessive dirt and dust build-up on
internal parts.
The fan motor has a sealed bearing, which requires no service.
DRIVE ROLLS AND GUIDE PLATES
After every coil of wire, inspect the wire drive mechanism. Clean it as
necessary by blowing with low pressure compressed air. Do not use
solvents for cleaning the idle roll because it may wash the lubricant
out of the bearing. All drive rolls are stamped with the wire sizes they
will feed. If a wire size other than that stamped on the roll is used, the
drive roll must be changed.
GUN TUBES AND NOZZLES
1. Replace worn contact tips as required.
1. Remove spatter from inside of gas nozzle and from tip after each
10 minutes of arc time or as required.
GUN CABLE CLEANING
To help prevent feeding problems, clean cable liner after using
approximately 300 pounds (136 kg) of electrode. Remove the cable
from the wire feeder and lay it out straight on the floor. Remove the
contact tip from the gun. Using an air hose and only partial pressure,
gently blow out the cable liner from the gas diffuser end.
Excessive pressure at the beginning of the cleaning procedure may
cause the dirt to form a plug.
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Flex the cable over its entire length and again blow out the cable.
Repeat this procedure until no further dirt comes out. If this has been
done and feed problems are experienced, replace the liner.
If for any reason you do not understand the procedures or are unable to perform the maintenance or repairs safely, contact your
Lincoln Authorized Service Facility for technical troubleshooting assistance before you proceed.
WWW.LINCOLNELECTRIC.COM/LOCATOR
WARNING
25
PERIODIC MAINTENANCE
LINER REMOVAL, INSTALLATION AND TRIMMING INSTRUCTIONS
FOR MAGNUM PRO 175L
NOTE: The variation in cable lengths prevents interchanging of liners
between guns. Once a liner has been cut for a particular gun, it
should not be installed in another gun unless it can meet the liner
cutoff length requirement.
1. Remove the gas nozzle from the gun by unscrewing counter-
clockwise
2. Remove the contact tip from the gun by unscrewing counter-
clockwise
3. Remove the gas diffuser from the gun tube by unscrewing counter
clockwise.
4. Lay the gun and cable out straight on a flat surface. Loosen the set
screw located in the brass connector at the wire feeder end of the
cable. Pull the liner out of the cable.
5. Insert a new untrimmed liner into the connector end of the cable.
Be sure the liner bushing is stenciled appropriately for the wire size
being used.
6. Fully seat the liner bushing into the connector. Tighten the set
screw on the brass cable connector. At this time, the gas diffuser
should not be installed onto the end of the gun tube.
7. With the gas nozzle and diffuser removed from the gun tube, be
sure the cable is straight, and then trim the liner to the length
shown in the Figure D.2. Remove any burrs from the end of the
liner.
8. Screw the gas diffuser onto the end of the gun tube and securely
tighten.
9. Replace the contact tip and nozzle.
FIGURE E.1
Gas Di user
Gas Nozzle or
Gasless Nozzle
Set Screw Brass Cable
Connector
Liner Assembly
(Liner bushing to be sealed tight
Liner Trim Length
against brass cable connector)
MAINTENANCE
CAUTION
1-1/4"(31.8 mm)
Liner Trim Length