Tweco SL100 - Manual (Page 6)

Manual 0-2880 6
Good Tip Worn Tip
A-03406
3. On torches with a shield cup body and a shield cap or
deflector, ensure that the cap or deflector is threaded
snugly against the shield cup body. In shielded drag
cutting operations (only), there may be an O-ring be-
tween the shield cup body and drag shield cap. Do
not lubricate the O-ring.
Drag Shield Cap
Shield
Cup Body
O-Ring No. 8-3488
Art # A-03878
4. Check the starter cartridge for excessive wear, plugged
gas holes, discoloration, and for free movement of the
lower end plate. Replace if necessary.
Lower End Fitting
Start Cartridge
Art # A-03621
5. Check the end of the electrode for excessive wear.
Worn Electrode
New Electrode
Art # A-03284
6 . Reinstall the Electrode by pushing it straight into the
torch head until it clicks.
!
WARNINGS
Refer to the consumables selection charts for the
proper combination of torch parts, including shield
cups and shield caps.
The use of any consumable parts other than those
specified by the Manufacturer may cause irreparable
damage to the torch head.
7 . Reinstall the desired starter cartridge and tip into the
torch head.
8. Hand tighten the shield cup until it is seated on the
torch head. If resistance is felt when installing the
cup, check the threads before proceeding.
NOTE
When operating the torch in a normal condition, a
small amount of gas vents through the gap between
the shield cup and the torch handle. Do not attempt
to overtighten the shield cup as irreparable damage
to internal components may result.
B. O-Ring Lubrication
This section applies only to torches withATC con-
nectors.
An o-ring on the Torch ATC Male Connector requires
lubrication on a regular basis, depending on how fre-
quently the torch is disconnected and re-connected.
This will allow the o-ring to remain pliable and pro-
vide a proper seal. The o-ring will dry out, becoming
hard and cracked, if the o-ring lubricant is not used
on a regular basis. This can lead to potential perfor-
mance problems.
It is recommended to apply a very light film of o-
ring lubricant (Catalog # 8-4025) to the o-ring on a
weekly basis.
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.