Lincoln Electric SP20/MP2 Series, Инструкция по технике безопасности, эксплуатации и обслуживанию

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8695 9001 / E
G-10
SP20/SP45 - MP2/MP5
G - OPERATING HINTS AND TIPS
SP 20/45
torches are packed in very clean conditions; the gas circuits have been
cleaned with dry nitrogen.
We recommend that the torch only be unpacked at the moment it is to be
connected to the
NERTAMATIC 50
or
PLASMAFIX 51
power sources and that the
circuits be purged before lighting the arc, using the welding gases, that is to say, Pure
ARGON for the plasma gas circuit. ARGON + 5 % H2 (for general cases where
hydrogen is usable).
1 - CONNECTING THE TORCH
The harness must be inserted into the rubber sleeve provided on the front of the
generator, this is done after opening the access door to the connections which is
located on the left side of the generator.
Immobilise the harness on its protective sheath by tightening the collar provided on
the rubber sleeve. Connect the 2 gas hoses and the two water hoses by matching up
the colour codings.
Moderately tighten the four connections using a wrench. For the
SP 20/45
manual
torches, connect the control connector to the corresponding socket.
Purge the cooling circuits for a few minutes and check that there are no water
leaks.
2 - PRECAUTIONS LINKED WITH COOLING
The
SP 20/45
torches can be dama ged by frost. Also, water with high mineral salt
content can affect its cooling by favouring deposition of these minerals at the hot spots
in the torch and in the internal passages.
It is for both these reasons that we recommend that only the premixed ready-to-
use coolant liquid supplied with the installation be used.
3 - FITTING THE CONSTRICTING NOZZLES
To ensure good thermal contact between the constricting nozzle and the water-
cooled torch head, the torch head must be clamped slightly (ensure that the tapered
contact faces are clean).