Plasma Cutter

Make: Miller

Model: Spectrum 875

Ace: Needed (Makerhub@georgefox.edu).

Location: Welding Shop

Description

The plasma cutter is a handy tool when fabricating. This machine will

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Here is an example of this piece of equipment being used.

Documentation

Terminology

• Duty Cycle- This is a percentage of a 10 minute cycle that the machine can be used without getting too hot at 104 degrees F. Running at 60 amps our machine has a duty cycle of 40%

User Manual

Training

Operation

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Demonstration

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General Procedure

1. Place fume hood over the area you will be welding at
2. Turn air on
3. Turn plasma cutter on
4. Attach ground clamp
5. Measure thickness of material being cut and refer to chart for current setting on machine
6. Set the current on the plasma cutter
7. Place the drag shield on the edge of the base metal, or hold ⅛ inch off the surface. Direct the arc straight down.
8. Raise the trigger lock and press the trigger, this will engage the pilot arc
9. Once the cutting starts, begin to slowly move the torch across the metal
10. Adjust your speed so the sparks go thru the metal and out the bottom of the cut
11. At the end of the cut, angle the torch slightly towards the final edge or pause briefly before releasing the trigger
12. Turn off machine
13. Turn off air
14. Disconnect ground clamp

Safety

1. Don't cut lead, zinc, copper, cadmium, or beryllium.
2. Don't attempt to cut with the compressed air off
3. Don’t cut with the vent hood off

Certification

Foxtale Course

Troubleshooting

• If the temperature status light turns on most likely you have exceeded the duty cycle of the machine. You will need to wait 15 minutes for the machine to cool down.

Maintenance

General maintenance

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Specific Maintenance Tasks

Maintenance Procedure	Frequency	Done By
Sample	Sample	Sample