Tweco SL55 Plasma Cutting - Manual (Page 3)

Manual 0-4759 3 January 10, 2006
3. Fit the desired start cartridge and tip onto the electrode.
CAUTION
The start cartridge supplied with this torch cannot
be used with any other 1Torch or on any other power
supply except Pro-Cut 55.
NOTE
Refer to the consumables selection chart for the proper
combination of torch parts, including shield cups
and tips.
4. Hand tighten the shield cup until it is seated on the
torch head. Do not use tools to tighten the cup. 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.
Operating Gas Pressure
Set gas pressure at the power supply regulator according
to the following charts. These charts are a guide only;
adjust as necessary for best performance.
Tip 25' / 7.6 m 50' / 15.2 m
60A 70 psi / 4.8 bar 75 psi / 5.2 bar
Gas Pressure Settings
Leads Length
Cutting
The torch can be held comfortably in one hand or steadied
with two hands. Choose the holding technique that feels
most comfortable and allows good control and movement.
Sequence of Operation
1. Turn on power and adjust gas pressure on the Power
Supply pressure gauge. Refer to the charts for optimum
pressure settings for the combination of torch tip and
total lead lengths in use.
2. Adjust current output on the Power Supply to match
the selected tip and attach the work clamp firmly to the
work.
CAUTION
Do not operate the torch with the torch tip in contact
with the work at output currents greater than
40amps. Drag cutting at higher currents can cause
irreparable damage to the torch parts.
3. Hold the torch away from your body.
4. Slide the trigger release toward the back of the torch
while simultaneously squeezing the trigger. The pilot
arc will start.
A-02986
Trigger
Trigger Release
5. Bring the torch within transfer distance to the work. The
main arc will transfer to the work, and the pilot arc will
shut off.
NOTE
The gas preflow and postflow are a characteristic of
the power supply and not a function of the torch.
3
4
Art # A-03383
Trigger
2
1
Trigger Release