Clarke 250TE Dokumentacja Pobierz pdf (Strona 17)

All components are now correctly assembled, and the welder

may now be prepared for use as follows:

E. The Welding Shield

1. Remove the shield, handle and screws bag from the packaging

2. Carefully bend the side and upper panels ‘inwards’ so that the holes in the

upper panel and top of the side panels coincide(A). Secure together with

screws and nuts provided.

3. Prise back the window flap and insert the clear glass first, followed by the

dark glass, ensuring they fit snugly in the recesses, then secure the flap with

two screws with nuts provided.

IMPORTANT: The clear glass MUST installed BEFORE the dark glass

It is important to pay attention to the notes on welding shield maintenance, given

on page 27. When replacing the glass panels, use ONLY those parts supplied by

Clarke International. The dark panel is a certified, specific optical class, and should

not be exchanged for any other type.

The clear glass panel should be replaced when it becomes badly pitted.

WARNING:

NEVER look at an electric arc without eye protection as this can injure the

eyes permanently. ALWAYS use a protection mask or welding helmet.

Fig.3

NOTE: The correct shade of glass should be used in accordance with the following

chart:

WELDING TIPS

• Try to maintain the tip of the nozzle at an angle of approx. 45

and at a constant

distance of approx 5-7mm from the workpiece.

• Try to maintain a constant speed of movement with the torch.

• Do not weld in windy conditions or in an area where ventilation is a problem,

or where air flow fluctuates.

• ALWAYS keep the wire and nozzle clean...NEVER use rusted wire.

• Avoid sharp bends or kinks in the welding hose.

• Whenever possible, clean out the wire liner with compressed air when

replacing the wire spool.

• Periodically remove the dust, using LOW PRESSURE compressed air, within the

casing. Adequate heat dissipation is essential during the welders operation.

B. Thermal Overload

The ‘Thermal Overload’ is a safety device which shuts off the welder when the

duty cycle has been exceeded. This is to prevent damage to the machine caused

by overheating.

When this occurs, the warning lamp will glow (amber). Allow the welder to cool,

until the amber light extinguishes before resuming.

For details of the duty cycle...i.e. the length of time the machine may be used at

a particular welding current, refer to the data and notes on page 28.

GENERAL INFORMATION

A. Spot Timer Control

This control may be used for spot (plug) welding, or stitch welding. The control is

set so that the duration of weld lasts for a predetermined time.

For plug welding, a special nozzle is required, (see your CLARKE dealer) which is

pressed hard against the two pieces of material to be welded, as the trigger is

pressed. The arc will last for a predetermined time, depending upon the control

setting, melting the metal and fusing the two parts together.

Allow a short period with parts held together before withdrawing the nozzle.

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