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28
SECTION 4
MAINTENANCE
Before any maintenance is at-
tempted on this torch, make sure
the POWER SWITCH on the power
source is in the OFF position and
the PRIMARY INPUT POWER is
DEENERGIZED.
!
WARNING
1. To disassemble the front end, hold the torch with the shield in an upright position.
This will prevent the nozzle, electrode, and swirl baffle from falling free when
the shield is removed.
The gas flow check valve is part of the safety interlock and is permanently
assembled in the torch head. The head must be replaced if this valve
malfunctions. The light spring force used to close the ball check can be felt by
pushing on the electrode when assembling the front end components.
2. Periodically check the heat shield, electrode, nozzle, and swirl baffle. Replace
if worn or damaged.
3. Do not continue to use if the electrode end erodes to a length shorter than 16mm
[5/8 in.] as shown in Fugure 4-3 below.
4. Apply a small amount of lubricant P/N 0558000443 (17672), supplied in spare
parts kit, to the heat shield as shown in Figure 4-3 below or to the o-ring. Check
o-ring for damage whenever the shield is removed. Replace if necessary.
Figure 4-3 O-ring and Electrode Maintenance
16mm (0.63")
Minimum
"XT" Electrode
Replace electrode when end
wears to 16mm (0.63") long.
Lubricant can be applied to
O-ring or Heat Shield
5. The power cable and switch leads in the service line should be inspected
periodically. If there are any cuts through the protective sheath or if gas leaks
are noted, replace the damaged component.
By following Steps 1, 2, and 3 in Subsection 4.5 the service line can be removed
from the torch. To disassemble the service line, lay the line out straight, remove
the tape from around the switch lead splices, and free the switch by cutting the
leads close to the splices. Replacement switches have extra long leads to make
up for any loss due to cutting. Remove the rubber boot from the inlet end of the
cable and remove the tape that secures the sheath at each end. Pull the sheath
off the cable (over small fitting at torch end). Note that the switch leads wrapped
around the power cable are secured with tape several places along the cable. The
leads, switch cord plug, and strain relief can now be removed. DO NOT remove
the white tape that forms a band around the power cable at each end. The sheath
is taped to the cable in front of the band which acts as a shoulder to prevent the
sheath from sliding back on the cable. Replacement cables have this tape in
place. If the switch leads are to be replaced, replace with 16 AWG STRANDED
COPPER, 600- VOLT, 90
°
C (194
°
F) INSULATED WIRE. Reassemble in reverse
order.
6. To reposition the switch on the torch, slide the flex support back, remove the
tape securing the spliced leads to the power cable, reposition switch, retape the
leads, and pull the flex support back in place.
NOTE: A thin film of silicone lubricant P/N 0558000443 (17672), supplied with the
spare parts kit, applied inside of the flex support will ease the assembly
4.4 PT-31XL TORCH MAINTENANCE
Содержание HandyPlasma 380
Страница 4: ...4 TABLE OF CONTENTS...
Страница 14: ...14 SECTION 1 DESCRIPTION...
Страница 26: ...26 SECTION 3 OPERATION...
Страница 30: ...30 SECTION 4 MAINTENANCE WORK LEAD CONNECTION TORCH CONNECTION...
Страница 41: ...41 Notes...
Страница 42: ...Notes...