Tweco A80-A120 CutMaster - Manual (Page 81)

CUTMASTER A80, A120
Manual 0-5119 SERVICE
5T-1
5T.01 General Maintenance
NOTE
Refer to Previous "Section 5 System" for common
and fault indicator descriptions.
Cleaning Torch
Even if precautions are taken to use only clean
air with a torch, eventually the inside of the torch
becomes 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 elec-
trical 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 reinstalling.
O-Ring Lubrication
An o-ring on the Torch Head and ATC Male Con-
nector 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.
Upper Groove
with Vent Holes
Must Remain Open
Threads
Upper O-Ring
in Correct Groove
Lower O-Ring
Art # A-03725
Torch Head O-Ring
ATC Male Connector
Art #A-03791
Gas Fitting
O-Ring
ATC O-Ring
NOTE
DO NOT use other lubricants or grease,
they may not be designed to operate within
high temperatures or may contain “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.
SECTION 5 TORCH:
SERVICE