Thermal Dynamics A80 User Manual

A80
OPERATION 0-4985
4T-4
Direction of Cut
In the torches, the plasma gas stream swirls as it leaves
the torch to maintain a smooth column of gas. This swirl
eect results in one side of a cut being more square than
the other. Viewed along the direction of travel, the right
side of the cut is more square than the left.
Right Side
Cut Angle
Left Side
Cut Angle
A-00512
Side Characteristics Of Cut
To make a square - edged cut along an inside diameter
of a circle, the torch should move counterclockwise
around the circle. To keep the square edge along an
outside diameter cut, the torch should travel in a clock-
wise direction.
Dross
When dross is present on carbon steel, it is commonly re-
ferred to as either “high speed, slow speed, or top dross”.
Dross present on top of the plate is normally caused
by too great a torch to plate distance. "Top dross" is
normally very easy to remove and can often be wiped
o with a welding glove. "Slow speed dross" is normally
present on the bottom edge of the plate. It can vary
from a light to heavy bead, but does not adhere tightly
to the cut edge, and can be easily scraped o. "High
speed dross" usually forms a narrow bead along the
bottom of the cut edge and is very dicult to remove.
When cutting a troublesome steel, it is sometimes use-
ful to reduce the cutting speed to produce "slow speed
dross". Any resultant cleanup can be accomplished by
scraping, not grinding.
4T.06 Hand Torch Operation
Stando Cutting With Hand Torch
NOTE!
For best performance and parts life, al-
ways use the correct parts for the type of
operation.
1. The torch can be comfortably held in one hand or
steadied with two hands. Position the hand to press
the Trigger on the torch handle. With the hand
torch, the hand may be positioned close to the torch
head for maximum control or near the back end
for maximum heat protection. Choose the holding
technique that feels most comfortable and allows
good control and movement.
NOTE!
The tip should never come in contact with
the workpiece except during drag cutting
operations.
2. Depending on the cutting operation, do one of the
following:
a. For edge starts, hold the torch perpendicular
to the workpiece with the front of the tip on the
edge of the workpiece at the point where the cut
is to start.
b. For stando cutting, hold the torch 1/8 - 3/8 in
(3-9 mm) from the workpiece as shown below.
A-00024_AB
Shield Cup
Torch
Stando Distance
1/8" - 3/8" (3 - 9mm)
Stando Distance
3. Hold the torch away from your body.
4. Slide the trigger release toward the back of the torch
handle 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 preow and postow are a charac-
teristic of the power supply and not a func-
tion of the torch.

Thermal Dynamics A80 Specifications

General

Brand	Thermal Dynamics
Model	A80
Category	Cutter
Language	English