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| MAINTENANCE |
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MAINTENANCE |
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| Calibration of the | |||||||
Safety Precautions |
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| board, potentiometer or motor is replaced or serviced. | |||||||
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| Calibration matches the scale on the name plate to the | ||||||||
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| actual wire feed speed. |
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| WARNING |
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| To verify the wire feed speed, | ||||||||
| ELECTRIC SHOCK can kill. | |||||||||
| 1. Assemble a .045 (1.2 mm) drive roll kit to the feed- | |||||||||
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| • Do not touch electrically live parts | er. |
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| 2. Load .045 (1.2 mm) steel wire into the feeder. | |||||||||
| such as output terminals or inter- | |||||||||
| 3. Trim the wire to the end of the contact tip of the gun. | |||||||||
| nal wiring. |
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| 4. Adjust the WFS knob per the Table D.1. | |||||||
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• When inching with gun trigger, electrode and |
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| TABLE D.1 | ||||||
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drive mechanism are “hot” to work and ground |
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| MODEL | WFS knob setting |
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and could remain energized | several seconds |
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| 400 |
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after the gun trigger is released. |
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| 200 |
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• Turn OFF input power at welding power source |
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before installation or changing drive roll and/or | 5. Activate and hold the COLD FEED switch for 10 | |||||||||
guide tubes. |
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• Welding power source must be connected to sys- |
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6. Measure the length of wire extending from the con- | ||||||||||
tem ground per the National Electrical Code or | ||||||||||
tact tip. The wire length shown in Table D.2. | ||||||||||
any applicable local codes. |
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| TABLE D.2 | |||||
• Only qualified personnel should perform mainte- |
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nance work. |
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| MODEL |
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| WIRE LENGTH | ||||
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| 50 inches ± 5 inches (1270 mm ± 127mm) | ||||||||
| 25 inches ± 2.5 inches (635 mm ± 64 mm) | |||||||||
Observe all additional Safety Guidelines detailed |
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throughout this manual. |
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| To calibrate the wire feed speed, | |||||||
ROUTINE MAINTENANCE |
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| Tools required: |
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• Clean and tighten all weld terminals. | • 5/16" nut driver |
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• Inspect all weld cables, control cables, gun cables | • 3/4" open end wrench |
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and shielding gas hoses. Repair or replace as nec- | • WFS meter or RPM meter | |||||||||
essary. |
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| • Shorting plug. The shorting plug shorts pins 1 and 5 | |||||||
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| of connector J2 on the p.c. board. J2 is a 6 pin |
PERIODIC MAINTENANCE | molex. |
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•Clean drive roll grooves.
•Blow out or vacuum the inside of the feeder.
CALIBRATION SPECIFICATION
WARNING
ELECTRIC SHOCK can kill.
•Do not touch electrically live parts.
•When inching with the gun trigger, electrode, wire drive motor and drive mechanism are "hot" to work and ground and could remain energized several seconds after the gun trigger is released.
•Welding power source must be connected to system ground per the National Electrical Code or any applicable local codes.
•Only qualified personnel should perform mainte- nance work.
1.Turn off power to the
2.Disconnect the electrode lead from the feed plate and from the welding power source.
3.Remove the wraparound from the
4.Turn on power to the
5.Adjust the WFS knob per the Table D.1.
6.Insert the shorting plug into the control p.c. board J2. (shorts pins 1 and 5.) See Figure D.2.
7.Wait a minimum of 1 second.
8.Remove the shorting plug.
9.Connect J2 of the harness to p.c. board.
10.Turn off power to the
11.Assemble the wraparound.
12.Connect the electrode lead.