Tweco CutMaster 12mm-20mm-25mm - Manual (Page 59)

CUTMASTER 12mm, 20mm, 25mm
Manual 0-5117 5T-1 SERVICE
SECTION 5 TORCH:
SERVICE
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 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 be-
fore 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
electrical 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 ele-
ments” 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.