Helvi PC 43 Manuel D'instructions Et D'entretien page 20

CUTTING OPERATION
PRELIMINARIES
WARNING: unplug the unit from the power supply before assemble or disassemble piled parts,
single parts, parts of the torch, torch assemblies or cables.
√ Check and follow instructions as foreseen in the paragraphs "Safety and Installation" of the
present instructions manual.
PARTS OF THE TORCH
√ Check the torch for proper assembly. Install proper torch parts for the desired application (refer
to Section called Torch Consumable Parts Selection). NOTE: The power supply will not operate
unless the torch shield cup is fully seated against the PIP (Parts in Place) pins in the torch head.
INPUT POWER
√ Check the power source for proper input voltage.
√ Make sure the power source meets circuit protection and wiring requirements.
√ Plug unit in and close main disconnect switch to supply primary power to the system.
GROUND CABLE
√ Check for a solid ground cable connection to the workpiece.
AUTOMATIC PURGE SYSTEM
30A - 40A model
√ Place the ON/OFF switch to the ON position. The ON light will flicker momentarily as the system
powers up and then stays on. Activate the torch button to initiate gas purge (pre-flow) to remove
any condensation that may have accumulated in the torch and leads while the system was shut
down. When the gas purge is complete, pilot arc will be initiated.
45A model
√ Place the ON/OFF switch to the ON position. Activate the torch button to initiate gas purge (pre-
flow) to remove any condensation that may have accumulated in the torch and leads while the
system was shut down. When the gas purge is complete, pilot arc will be initiated. To cool torch
handle or to further remove condensation in the torch and leads push the torch gas purge button
on the front panel of the unit.
WARNING
Do not initiate pilot arc during adjustment.
CHECKING AIR QUALITY
√ To check air quality, deactivate the torch (post-flow) and place filter lens in front of the torch. Any
oil or moisture in the air will be visible on the lens. DO NOT initiate pilot arc while checking air
quality.
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