Plasma cutter, small (Miller Spectrum 375) ID:52: Difference between revisions

Revision as of 04:03, 11 August 2013

Cuts metal via plasma arc
Eye protection must be worn at all times, (welding helmet or oxy/ace goggles suffice)
Leather gloves/sleeves required
Place workpiece on a raised surface, do not cut flush against floor or workbench
Attach grounding clamp, ensure good contact (no paint)
Set cutting power & air pressure according to workpiece thickness
NEVER cut without air supply at sufficient pressure, requires airflow for cooling
Flip up red trigger safety
Trigger is dual-mode. Tapping trigger toggles air supply on/off. Holding trigger starts plasma arc/cut
After cutting, let air flow for several seconds to cool tip before tapping off.
Arc begins as low-power pre-arc before full-power arc when good contact through workpiece is established.
After 5 seconds if good contact is not established, pre-arc shuts off as a safety feature. Pause and start pre-arc again.
DO NOT make contact with tip to workplace, this melts the tip.
Tips gradually wear out, are consumable.

Is currently wired for 240V. Can run on 120V as well, with reduced cutting capacity. Swapping plugs is not sufficient, internal wiring must be changed to become 120V. If wiring is changed, tape a note to the machine informing others such. When running on 120V, after rewiring inside, use the adapter cable made for this.

If 120V breaker trips, breaker is 20A breaker on left electrical panel, very bottom left (might change, but look there first if it tripped). Tripped breaker switches are between on and off. Breakers must be turned all the way off before back on. Lower cutting power, lower duty cycle to avoid tripping breaker again.

240V or 120V, 20A
At 120V, Cuts max of 3/16" steel continuously. Will cut 1/2" very slowly, 25% duty cycle or the breaker will repeatedly blow.
At 240V, Cuts max of 1/2" steel continuously. Will cut 5/8" very slowly. Use duty cycle stated on cutter itself.

@@ Line 30: / Line 30: @@
 * Tips gradually wear out, are consumable.
-* If breaker trips, breaker is 20A breaker on left electrical panel, very bottom left (might change, but look there first if it tripped). Tripped breaker switches are between on and off. Breakers must be turned all the way off before back on. Lower cutting power, lower duty cycle to avoid tripping breaker again.
+* Is currently wired for 240V. Can run on 120V as well, with reduced cutting capacity. Swapping plugs is not sufficient, internal wiring must be changed to become 120V. If wiring is changed, tape a note to the machine informing others such. When running on 120V, after rewiring inside, use the adapter cable made for this.
+* If 120V breaker trips, breaker is 20A breaker on left electrical panel, very bottom left (might change, but look there first if it tripped). Tripped breaker switches are between on and off. Breakers must be turned all the way off before back on. Lower cutting power, lower duty cycle to avoid tripping breaker again.
+* If 240V breaker trips, too much power is being used.
 ==Specs==
-* 120V, 20A
+* 240V or 120V, 20A
-* Cuts max of 3/16" steel continuously. Will cut 1/2" very slowly, 25% duty cycle or the breaker will repeatedly blow.
+* At 120V, Cuts max of 3/16" steel continuously. Will cut 1/2" very slowly, 25% duty cycle or the breaker will repeatedly blow.
+* At 240V, Cuts max of 1/2" steel continuously. Will cut 5/8" very slowly. Use duty cycle stated on cutter itself.