Kemppi MasterTig MLS 4000 - Manual (Page 20)

EN
3.2.7 foot pedal control r11f
First read under ”3.2.2.4. TIG welding panel MTL” point ”6. 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 10
The operation of cooling unit MasterCool 10 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
(HF CONTACT) button for more than 2 seconds.
The pump operates for 5 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 there is no pressure enough for water to flow.
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 exceeds +25 °C.
4. maintenanCe
NOTE! Watch out for mains voltage when handling electric cables!
Degree and circumstances of machine utilisation should be taken into consideration when
planning product maintenance. Careful use and preventive maintenance help to avoid
unnecessary production disturbances and breaks. Check the condition of the welding and
connection cables daily. Do not use damaged cables.
4.1 regular maintenance
4.1.1 every sixth months
NOTE! Disconnect the plug of the machine from the mains socket and wait for ca. 2 minutes
(capacitor charge) before removing the casing plate.
the following maintenance operations should be carried out at least every sixth months:
• Electric connections of the machine – clean any oxidised parts and tighten any loose
ones. NOTE! You must know the correct tension torques before you start repairing the
connections.
• Clean the inner parts of the machine from dust and dirt e.g. with a soft brush and a
vacuum cleaner. Do not use compressed air because there is the danger that the dirt
is packed even more tightly in the gaps of the cooling profiles. Do not use a pressure
washer.
NOTE! Only an authorised electrician may repair the machine.
Master, MasterTig, MasterCool 10
18