Helvi COMBI PC 502 K Manual De Uso Y Manutención página 13

TORCH
Periodically, according to its use or to cutting faults verify wear of the parts connected to plasma arc:
Shield Cup:
Unscrew manually from head of the torch. Clean throughly abd replace if damaged (burns, distortions or
cracks). Verify integrity of superior metal sector (actuator torch safety).
Tip:
Check wear of plasma arc hole and of inner and outer surfaces. If the hole is widened compared to its
original width or if it is damaged, replace tip. If surfaces are particularly oxidated clean them with extra ine
abrasive paper.
Air Distribution Ring:
Verify the are no burns or cracks or that airlow holes are not obstructed. If damaged, replace immediately.
Electrode:
Replace electrode when crater settling on emitting surface is about 2mm.
WARNING!
√ Before making any operation to the torch let it cool at least all along the "postgas" period.
√ Except for particular cases it is advisable to replace electrode and tip AT THE SAME TIME.
√ Respect assembly order of torch parts (reserved compared to disassemblage).
√ Be carefull that distributing is assembled properly.
√ Reassemble shield cup screwing tightly and manually.
√ Never assemble shield cup without having assembled electrode distributing ring and tip beforehand.
√ Timely and appropriate control procedures on torch parts are essential for safety and functionality of
the cutting system.
TORCH BODY, HANDLE AND CABLE
√ These parts usually need no particular maintenance with the exception of a periodic inspection and
an accurate cleaning to be made WITHOUT THE USE OF SOLVENTS.
In case of damages to the insulation such as breaks, cracks and burns or even a loosening of electric
coonductors, the torch CANNOT BE USED FURTHER SINCE SAFETY CONDITIONS HAVE NOT
BEEN RESPECTED.
IN THIS CASE, REPAIRING (EXTRAORDINARY MAINTENANCE) CANNOT BE MADE ON SITE
BUT NEEDS TO BE DELEGATED TO A SERVICE CENTER TO MAKE SPECIAL REST TRIALS
AFTER REPAIRING HAS BEEN EXECUTED.
In order to keep the torch and the cable eficient it is necessary to follow these precautions:
√ DO NOT touch torch and cable with warm or hot parts.
√ DO NOT strain the cable.
√ DO NOT move the cable on sharp edges or abrasive surfaces.
√ gather the cable in regular coils if it is too long.
√ DO NOT step on the cable.
COMPRESSED AIR FILTER
The power source is equipped inside with a ilter for the compressed air with a manual drainer of the
condense (drainer is placed on the bottom of the unit). Purge periodically to remove the water in the
ilter. To drain the condensation from the air ilter, turn off the Power source and unplug it from the
mains. Lift the unit, to reach the drain valve located on the bottom of the unit.
Open the valve turning it counter-clock wise and let the condensation drain. Once the condensation has
drained, it is extremely important that you tightly close the valve, turning it clock-wise.
WARNING: Failure to close this valve will result in serious damages to the torch.
In case the ilter cartridge is particularly dirty it is necessary to substitute it in order to avoid pressure losses.
NOTE: The unit will not operate if the input air pressure is too low.
Do not use solvents to clean the ilter; use soapy water only.
13