Cleaning Torch; O-Ring Lubrication; Section 5 Torch: Service; 01 General Maintenance - ESAB A120 Operating Manual

SECTION 5 TORCH:
SERVICE
5T.01 General Maintenance
NOTE!
Refer to Previous "Section 5 System"
for common and fault indicator descrip-
tions.

Cleaning Torch

Even if precautions are taken to use only clean air
with a torch, eventually the inside of the torch be-
comes coated with residue. This buildup can affect
the pilot arc initiation and the overall cut quality of
the torch.
WARNING
Disconnect primary power to the system
before disassembling the torch or torch
leads.
DO NOT touch any internal torch parts
while the AC indicator light of the Power
Supply is ON.
The inside of the torch should be cleaned with electri-
cal contact cleaner using a cotton swab or soft wet
rag. In severe cases, the torch can be removed from
the leads and cleaned more thoroughly by pouring
electrical contact cleaner into the torch and blowing
it through with compressed air.
CAUTION
!
Dry the torch thoroughly before reinstall-
ing.

O-Ring Lubrication

An o-ring on the Torch Head and ATC Male Connec-
tor requires lubrication on a scheduled basis. This
will allow the o-rings to remain pliable and provide
a proper seal. The o-rings will dry out, becoming
hard and cracked if the lubricant is not used on a
regular basis. This can lead to potential performance
problems.
It is recommended to apply a very light film of o-
ring lubricant (Catalog # 8-4025) to the o-rings on
a weekly basis.
0-5430
Lower O-Ring
Torch Head O-Ring
Gas Fitting
Art #A-03791_AB
NOTE!
DO NOT use other lubricants or grease,
they may not be designed to operate
within high temperatures or may con-
tain "unknown elements" that may react
with the atmosphere. This reaction can
leave contaminants inside the torch.
Either of these conditions can lead to
inconsistent performance or poor parts
life.
SERVICE
CUTMASTER A120
Upper Groove
with Vent Holes
Must Remain Open
Upper O-Ring
in Correct Groove
Threads
Art # A-03725
ATC Male Connector
O-Ring
#8-0525
ATC O-Ring
5T-1