1 – Mastertig MLs™ 300 aCDC / 0743
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3.2.4. Adopting the saved settings
1. Select MEMORY by pressing the button.
2. Select memory channel by pressing the CH button.
3. Start welding.
3.2.5. Remote control memory channels
Memory channels are selected by pressing simultaneously both REMOTE and CH button. With
the remote control you can retrieve saved settings on memory channels 1-5. The selected channel
is marked with a dot.
3.2.6. SETUP functions
A so called SETUP state is included for modifying panel functions. You can enter the SETUP state
by pressing the SETUP button longer than normally. Exit is performed in the same way. You can
select the function (see list below) by pressing the arrow buttons and then change the setting by
turning the potentiometer. See SETUP-function table on the next page.
3.2.7. Foot pedal control R11F
First read under 3.2.2.2. ”ACS Welding Panel – Basic Functions” point ”Remote control” for
installing the remote control ready for operation. Foot pedal R11F is used in TIG welding, and its
control range is adjustable. The minimum value of control range is set with the panel potentiometer
when the pedal is not pressed, display shows ”LO”. Control range maximum is set similarly by
pressing first the PEDAL LO/HI button on the panel, display shows ”HI”. Welding is started with
a light press on the pedal, the arc ignites to the set minimum current. Welding current goes to
maximum when the pedal is pressed to the bottom. The arc is broken when the pedal is released.
Adjust again if necessary.
3.3. COOLINg uNIT OPERATION mASTERCOOL 20
The operation of Mastercool cooling unit is controlled by the power source. The cooling unit pump
starts automatically when welding starts. Proceed as follows:
1. Start power source.
2. Check water level and input flow of the reservoir, add liquid if needed.
3. If you use a water-cooled torch you can fill it with water by pressing WATER FILL button
for more than 2 seconds.
The pump operates for 4 another minutes after welding has been finished to cool the water to the
same temperature as in the machine surrounds. This reduces the need of service.
Thermal overload
The thermal overload light is lit, the machine stops and display shows COOLER when temperature
control of the machine has detected cooling water overheating. The cooling unit fan cools down
the water, and when the light goes out welding can be started again.
Water flow signal
Display shows COOLER when water flow is blocked.
3.4. STORAgE
The machine must be stored in a clean and dry room. Protect the machine from rain and direct
sunshine in places where temperature e25 °C.
