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MAINTENANCE |
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| free of spatter. | A piece of wire is recommended to | |||||
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| keep intake ports and I.D. of extension guide free of | ||||
To ensure proper smoke pickup and gun life, the | spatter and smoke buildup. | ||||||||
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intake ports and end of extension guide must be kept | The following cleaning schedule is recommended: | ||||||||
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| Maintenance |
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| 5/64 | ||||
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| Recommended |
| Other | S16989 |
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| Electrodes | Extension Guide |
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| Do not let spatter accumulate on end of extension | guide. Clean as necessary. |
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| Failure to keep extension guide free of spatter will make extension guide electrically |
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| hot and it will arc to work. |
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| Clean intake ports and |
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| I.D. of extension guide |
| When intake ports are 50% plugged. |
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| with wire. Remove spat- |
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| ter from bottom of exten- |
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| sion guide. |
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| With vacuum off, remove |
| Each 1/2 coil | Each coil |
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| extension guide and clean |
| of electrode | of electrode |
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| I.D. of housing and clean |
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| nozzle spacer. |
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| Break loose any particles |
| 10 to 20 coils | 10 to 20 coils | 2 to 5 coils |
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| built up at bend or clamp |
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| in intake housing with a |
| of electrode | of electrode | of electrode |
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| piece of wire or electrode |
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Gun Cables
Clean cables after using approximately 300 pounds of electrode. Remove the cable from the wire feeder and lay it out straight on the floor. Remove the contact nozzle tip from the gun. Using an air hose and only partial pressure, gently blow out the cable from the gun end. Too much pressure at the start will cause the dirt to form a plug.
Flex the cable over its entire length and again blow out the cable. Repeat this procedure until no further dirt comes out.
Gun Nozzle
a.Replace worn contact tips as required.
b.Remove spatter from tip or extension guide after each ten minutes of arc time as required.
c.Replace worn spring liner in nozzle. The life of the liner can be doubled by rotating the liner 180°.
The liner can be pulled out the back end of the nozzle by wedging the blade of a small screwdriv- er in the I.D. and pulling.
d. Internal parts of nozzle can be removed and replaced by removing the internal
The ceramic insert and retainer will normally fall out the end of the nozzle but if they do not, gently drive the spring liner towards the outgoing end of the noz- zle.
See the parts list pages for construction details and replacement parts. When
TROUBLESHOOTING
Trouble | Cause | Remedy |
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Poor smoke pickup | Vacuum unit not operating correctly. | Clean filters or repair vacuum unit. |
| Spatter buildup on intake ports, I.D. of | Remove spatter and clear all passages. |
| extension guide or I.D. of intake housing. |
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| Hoses blocked or damaged. | Clean or repair hoses. |
| Strong drafts. | Eliminate strong drafts or construct barriers |
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| so draft will not affect smoke removal. |
| Visible stickout is too long. | Shorten visible stickout to |
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| recommended length. |
| Housing “O” ring seal not in place. | Place “O” ring against housing to handle junction. |
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Poor arc action or erratic feeding. | Worn contact tip or nozzle. | Replace worn parts. |
| Dirty cable. | Blow out cable with compressed air. |
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FLUX CORED FUME GUN