Installation; Description Of The Equipment; Start-Up; Use - WELDKAR WK PLASMA 4060 PFC Mode D'emploi

3. INSTALLATION

This must be carried out by skilled personnel. All
connections must be carried out according to current
regulations, and in full observance of safety laws (CEI
reglement 26-10 – CENELEC HD 427).
- Make sure that the supply voltage matches the
voltage indicated on the specifications plate.
- When mounting a plug, make sure it has an
adequete capacity, and that the yellow/green
conductor of the power supply cable is connected to
the earth pin.
WARNING! Extension cords of up to 30 m must have a
crosssection of at least 2.5 mm².

3.1 DESCRIPTION OF THE EQUIPMENT

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3 5
8
6
2
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1) Plasma torch fitting
2) Positive output terminal (+) Earth Cable
3) Power indicator: Indicates that the machine is
turned on.
4) The indicator will illuminate if the duty cycle of the
power source has been exceeded.
5) This knob is used to adjust cutting current.
6) Water trap
7) Compressed air fitting
8) Pressure gauge
9) Pressure regulator knob
10) Power Access client: access to cable.
11) Power switch: control power through and break.

3.2 START-UP

Connect the air supply to the fitting (7).
If the system air contains a considerable amount of
moisture and oil, it is best to use a drying filter to avoid
excessive oxidation and wear of the consumer parts,
damaging the torch and reducing the cutting speed and
quality. If the air supply comes from a pressure regulator of
a compressor or centralized system, the regulator must be
set to an output pressure of no more than 8 bar (0.8 Mpa).
Figure 1
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9
If the air supply comes from a compressed
air cylinder, the cylinder must be equipped
with a pressure regulator. Never connect
a compressed air cylinder directly to the
regulator on the machine! The pressure could
exceed the capacity of the regulator, which
might explode!
Connect the power cord (10): the yellow-green cable
wire must be connected to an efficient grounding socket
on the system. The remaining wires must be connected
to the power supply line by means of a switch placed as
close as possible to the cutting area, to allow it to be
shut off quickly in case of emergency.
Any extension cords must be sized appropriately for the
absorbed current.

3.3 USE

Make sure the torch trigger has not been pressed. Turn
the machine on using the switch (11). The warning
lamp (3) will light to indicate that the machine is on.
Press the torch trigger briefly to open the flow of
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compressed air. Since the arc is not lit, air leaves the
torch for only 5 sec.
10
Now adjust the pressure, shown on the pressure gauge
(8), to 3.5 bar (0.35 MPa) using the knob (9) on the
regulator, then lock the knob by pressing it downward.
Connect the grounding clamp to the workpiece.
The cutting circuit must not be deliberately placed in
direct or indirect contact with the protective wire except
in the workpiece.
Use the knob (5) to adjust the cutting current from 20
to 40 A based on the work at hand.
Make sure that the earth clamp and the workpiece are
in good electrical contact, especially with painted or
oxidized metal or with insulated coating; connect the
clamp as close as possible to the cutting area. Do not
connect the grounding clamp to the part of the material
that is to be removed. Press the torch trigger to strike
the pilot arc. If cutting does not begin within 2 seconds,
the pilot arc goes out; press the trigger again to re-
strike it. Begin cutting.
Hold the torch upright while cutting. When you have
finished cutting and released the trigger, air will continue
to leave the torch for approximately 30 seconds to allow
the torch to cool down.
It is best not to turn the machine off until this
cooldown period is complete.
Should you need to make holes or begin cutting from
the center of the workpiece, you must hold the torch at
an angle and slowly straighten it so that the nozzle does
not spray molten metal. This must be done when making
holes in pieces more than 3 mm thick.
Should you need to cut several layers of metal, as are
normally used in auto body work, adjust the cutting
current to the minimum values.
Turn the machine off when the task is
completed.
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