Before You Start Using The Unit; Unpacking; Positioning And Location Of The Machine; Power Supply Connection - Kemppi MasterTig LT 250 Operating Manual

2.

BEFORE YOU START USING THE UNIT

NOTE!
Please read the separate safety instruction booklet provided before you commence welding. Pay
particular attention to the risks associated with fire and explosion.
2.1

Unpacking

Always before using the equipment, make sure it was not damaged during transportation. Also
check that you have received what you ordered and that there are instructions for it.
The packaging material of the products is suitable for recycling.
Transportation
The machine should be transported in an upright position.
NOTE! Always move the welding machine by lifting it from the handle. Never pull it from the welding
torch or other cables.
Environment
The machine is suitable for both indoor and outdoor use, but it should be protected from rain and
sunshine. Store the machine in a dry and clean environment and protect it from sand and dust
EN during use and storage. The recommended operating temperature range is -20 °C – +40 °C. Place
the machine in such a way that it does not come in contact with hot surfaces, sparks and spatters.
Make sure the air flow in the machine is unrestricted.
2.2

Positioning and location of the machine

Place the machine on a firm, dry and level surface. Where possible, do not allow dust or other
impurities to enter the machines cooling air flow. Preferably site the machine above floor level; for
example on a suitable carriage unit.
Notes for positioning the machine
• The surface inclination should not exceed 15 degrees.
• Ensure the free circulation of the cooling air. There must be at least 20 cm of free space in
front of and behind the machine for cooling air to circulate.
• Protect the machine against heavy rain and direct sunshine.
NOTE!
The machine should not be operated in the rain as the protection class of the machine, IP23S,
allows for outside preserving and storage only.
NOTE! Never use a wet welding machine.
NOTE!
Never aim metallic grinding spray/sparks towards the equipment.
2.3

Power supply connection

MasterTig LT 250 requires no mains input voltage supply and is powered by the supply output
voltage from a parent welding power source. You can use either a Constant Current (CC) or
Constant Voltage (CV) parent power source normally used for MMA or MIG/MAG welding, or a
welding generator with a suitable output characteristic.
NOTE!
The performance of the parent power source can limit the maximum output of MasterTig LT 250.
2.4

Serial number

Serial number of the machine is marked on the rating plate. The serial number is the only proper
means of identifying parts for a specific product. It is important to make correct reference to the
serial number of the product when making repairs or ordering spare parts.
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MasterTig LT 250