Dirt Or Contamination; Inspection, Cleaning And Replacement Of Consumables - ESAB PT-37 Manuel D'instruction

SECTION 5
WARNINg
5.0 general
A. Periodically check torch head assembly. Replace if worn or damaged.
B. Torch cable should be inspected periodically. If there are any cuts through the protective sheath or wire
insulation, replace the cable.

5.1 Dirt or Contamination

Dirt or other contamination in the torch and loose consumable parts can cause premature failure of the PT-37
Torch through internal arcing. To avoid this, users are instructed to do the following: Ensure that clean, dry, and
oil-free air is being used. Wipe the retaining cup clean with a cloth before installing each fresh set of consumables.
The ability of the retaining cup to resist arc tracking over its surface is reduced when dirt or other contamination
is allowed to collect there.

5.2 Inspection, Cleaning and Replacement of Consumables

Gas Baffle (30-70A)
Shield
BEFORE ANY MAINTENANCE IS ATTEMPTED ON ThIS TORCh, MAKE
SURE ThE POWER SWITCh ON ThE CONSOLE IS IN ThE OFF POSITION
AND ThE PRIMARY INPUT POWER IS DEENERgIZED.
Torch Body
Assembly
Electrode/Torch
Body Seat
Piston
Gas Baffle (90/100A)
Electrode
Nozzle
Retaining Cup
w/ Threads
1. Bring torch to a position where it is easily
accessed by machine operator, in its normal
vertical position.
2. Unscrew the retaining cup and lower it away
from the torch, allowing nozzle to remain with
retaining cup.
The nozzle and electrode will generally wear
at the same rate. For best performance, re-
When inspecting consumables visually
check torch body assembly. Replace torch
body assembly if worn or damaged.
NEW
WORN
437
MAINTENANCE
Note:
place together.
Note: