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16

REPLACING THE ELECTRODE

If your arc begins to lose power (i.e., will not

cut through workpiece any longer), or the

cutting arc becomes difficult to maintain, it

may be necessary to change the electrode.

A quick visual inspection will reveal whether

an electrode is worn. A worn electrode is

characterized by a crater shaped tip. Once

this crater reaches 1.5 - 2 millimeters in

depth, replacement is necessary.

(See Figure 10)

1. Remove the nozzle cap from the torch by

turning it counterclockwise.

2. Remove the nozzle.

3. Using a wrench, unscrew the worn elec-

trode from the torch.

4. Install the new electrode by firmly tighten-

ing it in place. Only tighten electrode to

the point that it is fully seated in the

torch. Do not over-tighten.

5. Place nozzle onto electrode.

6. Replace nozzle cap by firmly turning it

clockwise onto torch assembly (refer to

Figure 9).

REPLACING THE SWIRL RING

The swirl ring has an average life expectan-

cy of about 3 - 4 cutting hours. It needs to be

replaced when cracks, chips, or burn spots

begin to appear.

1. Remove the nozzle cap from the torch by

turning it counterclockwise.

2. Remove the nozzle.

3. Slide the worn swirl ring off of the torch.

4. Install the new swirl ring by sliding it into

place on the torch.

5. Place nozzle onto electrode.

6. Replace nozzle cap by firmly turning it

clockwise onto torch assembly (refer to

Figure 9).

REPLACING THE NOZZLE CAP

The nozzle cap should be replaced if it

develops cracks or burn through holes.

Always inspect the swirl ring when replacing

the nozzle cap and replace both if necessary.

To replace the nozzle cap, simply unscrew

the old one and replace with new.

TROUBLESHOOTING

The following TROUBLESHOOTING table is

a guide to help resolve some of the more

common problems that could be encoun-

tered. Use it to help you determine a possi-

ble remedy when you are having a problem

with your plasma cutter. This table does not

provide all possible solutions, only those

possibilities considered to be common faults.

The table consists of a TROUBLE or symp-

tom, a POSSIBLE CAUSE for the symptom,

and a POSSIBLE REMEDY for that 

symptom.

Figure 10. 

Electrodes

Summary of Contents for 052249011064

Page 1: ...27 9603 or 419 930 2299 Fax 877 354 0740 www clarkeusa com E mail customer service clarkeusa com 120V PLASMA CUTTER OPERATING MANUAL CAUTION Before using this product read this manual and follow all i...

Page 2: ...product gets shipped that does not meet our specifications If you have a product that does not work correctly within 30 days of your purchase take the product and the original receipt to the store for...

Page 3: ...this plasma cutter Failure to comply with these instructions could result in personal injury and or property damage RETAIN THESE INSTRUCTIONS FOR FUTURE REFERENCE Note The following safety alert symbo...

Page 4: ...power source if the ground prong on power cord plug is bent over broken off or missing Do not allow the unit to be connected to the power source or attempt to operate if the unit cables work area or...

Page 5: ...clothing that contains oil grease or other flammable substances Do not wear flammable hair preparations Do not work in an area until it is checked and cleared of combustible and or flammable materials...

Page 6: ...ate to exchange all fumes and gasses generated during the cutting process with fresh air do not plasma cut unless the operator and all bystanders are wearing air supplied respirators Do not heat metal...

Page 7: ...TING AND WELDING PROCESS obtainable from the National Fire Protection Association 1 Batterymarch Park P O Box 9101 Quincy MA 02269 9101 Telephone 617 770 3000 Fax 617 770 0700 www nfpa org OSHA Standa...

Page 8: ...AL PROTECTION CAUTION Do not constantly exceed the duty cycle or damage to the unit can result If you exceed the duty cycle of the plasma cutter an internal thermal protector will open shutting off al...

Page 9: ...te power and heat Scrape away dirt rust scale oil or paint before attaching the ground clamp Ground Cable The ground cable connects the ground clamp to the internal workings of the plasma cutter Cutti...

Page 10: ...the grounding prong or alter the plug in any way and do not use any adapters between the plasma cutter s power cord and the power source receptacle Make sure the POWER switch is OFF then connect your...

Page 11: ...ROUND CLAMP TO THE WORKPIECE 1 Remove any dirt grease scale rust paint etc from the area of the workpiece where the ground clamp is to be connect ed 2 The ground clamp should be connected to the workp...

Page 12: ...lasma to the materi al The high energy of the arc melts the material The melted metal material is simul taneously forced out of the cut area by the air flow As this glowing metal is removed from the p...

Page 13: ...er strike an arc or begin cutting until you are adequately protected Wear flameproof welding gloves a heavy long sleeved shirt cuffless trousers high topped shoes and a welding helmet 3 With the torch...

Page 14: ...o be cut at a moderate steady pace 6 To shut the torch off simply release the trigger Note When the trigger is released and the arc is extinguished compressed air will con tinue to flow for a short pe...

Page 15: ...from the air supply 1 Slowly turn the knurled drain valve on the bottom of the water trap housing counter clockwise as viewed from bottom of unit until it is fully open 2 Allow all condensation to dra...

Page 16: ...eeds to be replaced when cracks chips or burn spots begin to appear 1 Remove the nozzle cap from the torch by turning it counterclockwise 2 Remove the nozzle 3 Slide the worn swirl ring off of the tor...

Page 17: ...17 TROUBLESHOOTING...

Page 18: ...18 18 PLASMA CUTTER MODEL WE6493A WIRING DIAGRAM...

Page 19: ...19 19 PLASMA CUTTER MODEL WE6493A PARTS LIST...

Page 20: ...20 PLASMA CUTTER MODEL WE6493A PARTS DIAGRAM...

Page 21: ...21 PLASMA CUTTER MODEL WE6493A TORCH PARTS LIST...

Page 22: ...NOTES...

Page 23: ...NOTES...

Page 24: ...120V PLASMA CUTTER OPERATING MANUAL Model WE6493A WE6493A M001 1204...

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