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Combi PC202K
Инструкция по эксплуатации Страница: 10

Helvi Combi PC202K Инструкция по эксплуатации онлайн [10/64] 394384

CUTTING

A. Cutting with a Hand Torch

√ The torch can be comfortably held in one hand or steadied with two hands. Choose the technique

that feels most comfortable and allows good control and movement. Position the index nger or

thumb to press the control switch on the torch handle.

√ 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. - Fig. A. For piercing, angle the torch

slightly to direct sparks away from the torch until the pierce is complete. Fig. B

Fig. A Fig. B

√ For drag cuts keep the torch in contact with the workpiece. For standoff cutting, hold the torch

2-3 mm from the work.

√ With the torch in starting position, press the control switch. After an initial gas purge (pre-air),

the pilot arc will come on and remain on for 3 seconds until the cutting arc starts.

√ Once on, the main arc remains on as long as

the control switch is held down, unless the torch

is withdrawn from the work or torch motion is

too slow. Keep moving while cutting. Cut at a

steady speed without pausing. Maintain the

cutting speed so that the arc lag is about 30°

behind the travel direction. Fig. C

If the cutting arc is interrupted, and the torch

trigger is still pressed, the pilot arc comes back

on automatically for 3 seconds.

√ To shut off the torch simply release the control switch. When the switch is released a post-ow

will occur. If the torch trigger is pressed during the post-ow, the pilot arc will restart.

B. Piercing with a Hand Torch

Note: If necessary to make a cut on a metal sheet which is thicker than the maximum pier-

cing capacity (without an edge start) make a hole ø 6mm at least using an electric drill to

start cutting.

√ When piercing with a hand torch, tip the torch

slightly so that blowback particles blow away

from the torch tip (and operator) rather than

directly back into it. Fig. B

√ Complete the pierce off the cutting line and then

continue the cut onto the line. Hold the torch

perpendicular to the workpiece after the pierce

is complete. Fig. D

√ Clean spatter and scale from the shield cup and the tip as soon as possible. Spraying or dipping

the shieldcup in anti-spatter compound will minimize the amount of scale which adheres to it.

WARNING

Disconnect primary power at the source and wait that the torch has cooled before disassembling the

torch or torch leads. Frequently review the Important Safety Precautions at the front of this Manual.

Fig. C

Fig. D

Fig. B

Helvi Combi PC202K Инструкция по эксплуатации онлайн [10/64] 394384

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