Switching--On And Overheating Protection; Operation; Replacing And Inserting Wire - ESAB Migmaster 280 Pro Manuel D'instructions

GB
6.2 Switching- -on and overheating protection
When machine is switched on with switch [1], the indicating lamp "ON" is lit. If the ma-
chine is not overheated (lamp [2] is off) it is ready to work. If the internal temperature
during welding becomes too high, the welding is interrupted and disabled. This state is
indicated by permanent lighting of the orange indicating lamp [2] on the front of the unit.
It resets automatically when the temperature falls down.
6.3

Operation

Operator can manually select and set welding parameters as follows:
required welding voltage (and thus welding current) with knob [3], [3a]
S
Warning: Operating the knobs [3], [3a] during the welding process (loaded
power source) can cause heavy damage to the unit !!!
appropriate wire feed speed with knob [7]
S
initial wire speed ("creep start") with selector [12] (wire feeder compartment)
S
burn--back time with knob [10] (wire feeder compartment)
S
spot welding (optional), activated by turning the knob [6] clockwise, spot welding
S
time increases while turning the knob [6] clockwise; set knob [6] in the left utmost
position in order to return to the continuous welding.
If the welding gun is used, welding process starts after its trigger is pressed and the wire
speed is controlled with potentiometer [7] on the front panel.
If the spool--on gun is used, welding process starts after its trigger is pressed, the spool--
on gun motor starts and wire speed is controlled with the potentiometer in the spool--on
gun grip.
Note: For spool--on gun current cable connection it is necessary to use the OKC "T"
adapter or Adapter KIT ST--23A, depending on used spool gun (see Accessories on
page 46).
Machine is fitted with V/A digital instrument [8] (with "hold" function i.e. memorising of
the last values of welding voltage and current).
6.4

Replacing and inserting wire

Open the side panel.
S
Place the spool on the hub and secure it with the lock.
S
Disconnect the pressure sensor by folding it backwards, the pressure rollers
S
slide up.
Straighten out the new wire 10--20 cm. File away burrs and sharp edges from the
S
end of the wire before inserting it into the wire feed unit.
Make sure that the wire goes properly into the feed roller track and into the outlet
S
nozzle and the wire guide.
Secure the pressure sensor.
S
Close the side panel.
S
MMP280e
- - 10 - -