Tweco 40mm Cutmaster - Manual (Page 63)

CUTMASTER 40mm
Manual 0-5084 5T-1 SERVICE
SECTION 5 TORCH:
SERVICE
5T.01 General Maintenance
NOTE
Refer to Previous "Section 5 System" for com-
mon 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
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 thor-
oughly 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 tempera-
tures 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.