Cebora 369 Bedienungsanleitung Seite 24

MAX = 25.0 s.
ACM = Activation of MIX welding (only TIG AC)
ACd = Duty cycle of AC part compared to entire
MIX period (only active if ACM On).
AAd = adjustment of amplitude of the negative half
wave (active in welding with alternate current).
5. HS (only MMA)
Percentage of hot-start current:
in order to improve electrode start-up the power source
delivers an overcurrent as against the current set.
Manufacturer's setting: 50%.
MIN = 0 %
MAX = 100 %
6. tHS (MMA only)
Duration of hot-start current.
Manufacturer's setting: 0.15%.
MIN = 0 s
MAX = 0.5 s
7. AF (MMA only)
Percentage of arc-force current.
This is a percentage of the welding current.
This overcurrent facilitates transfer of melt metal drops.
Manufacturer's setting: 30%.
MIN = 0 %
MAX = 100 %
8. USb
This function is used to update the machine;
To do this proceed as follows:
1. Fit a USB flash drive containing the file with extension
"fwu" relating to the Cebora firmware of the welding
machine to be updated into the BS connector.
NOTE. The USB flash drive must be formatted with
file system FAT 32 and the file must be copied in the
BIN folder.
2. Enter the second functions menu and select the
USb function of the display screen D1. On the
display screen D2 "rEM" (remove) appears.
3. With the encoder M1 set "UPd" (update) on the
display screen D2.
4. Press key T5 for longer than 3 seconds to start the
update sequence. Wait a few minutes. At the end of
the update sequence, the welding machine will be
operative again.
5. Remove the flash drive.
9. FAC (Resetting of Settings)
ALL resets all.
NoP resets all except JOBs.
PRG deletes all JOBs saved.
Once the desired option has been set, press key T5 for
activation.
3.4. WELDING WITH COVERED ELECTRODES (MMA).
- This welding machine is suitable for welding all types of
electrodes which can be welded in direct current, with
the exception of cellulosic (AWS 6010).
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- Check that switch BE is in O position, then connect the
welding cables in compliance with the polarity requested
by the manufacturer of the electrodes you are going to
use; connect the earth cable terminal to the workpiece
as close as possible to the welding point and make sure
that there is a good electric contact.
- Do not touch the torch or electrode clamp simultaneously
and the mass terminal at the same time.
- Turn the machine on using the switch BE.
- Select MMA process, by pressing key T1 until LED L2
lights.
- Adjust the current according to electrode diameter,
welding position and type of joint to be made.
- Always remember to shut off the machine and remove
the electrode from the clamp after welding.
If you wish to adjust the Hot-start
functions, see second functions (paragraph 3.3.1).
3.5. TIG WELDING.
By selecting TIG (LED L1) with contact start-up or HF
(LED L8 or L9), you can weld:
- in TIG AC welding, aluminium, brass, and magnesium
- in TIG DC welding, stainless steel, iron, and copper.
Connect the mass cable connector to the positive pole (+)
of the welding machine, and the terminal to the workpiece
as close as possible to the welding point, making sure
there is good electrical contact.
Connect the power connector of the TIG torch to the
negative pole (-) of the welding machine.
Connect the torch controlling connector to connector BC
of the welding machine.
Connect the fitting of the torch gas hose to the BD
machine connector and the gas hose coming from the
cylinder pressure regulator to the gas fitting BH.
3.5.1 Cooling unit (optiona for Art. 369).
If you use a water cooled welding torch, use the cooling
unit.
Insert the torch cooling hoses in the fittings BI and BL
of the cooling unit, being careful to correctly place the
delivery and return.
3.5.1.1 Description of protection devices.
- Coolant pressure protection device.
This protection is achieved by means of a pressure
switch, inserted in the fluid delivery circuit, which controls
a microswitch. Low pressure is indicated by the flashing
message H2O on the display D1.
3.5.1.2 Start-up
Unscrew the cap BF and fill the tank (the equipment is
supplied with approximately one liter of fluid).
It is important to periodically check, through the slot BM,
that the fluid remains at the "max" level".
Insert the pressure switch connector and the power cord
into the sockets BR and BQ.
Turn on the machine.
To select the operating mode of the cooling unit, proceed
as follows:
and Arc force