HTP MICROCUT 600, Owner'S Manual

Page: 14 / 18

14
MAINTENANCE
Maintenance can only be carried out on the unit
if the person in charge of this operation has the
necessary technical knowledge and the correct
tools. If this is not the case, contact your nearest
service centre.
CAUTION!
Never access inside the machine (panel
removal) or touch the torch (disassemblage)
without having disconnected power plug.
Any inspection performed under voltage
inside the machine or inside the torch may
cause severe electric shocks caused by direct
contact with parts under voltage.
UNIT
Keep the cutting or gouging area and the
area around the machine clean and free of
combustible materials. No debris should be
allowed to collect , this could obstruct air fl ow
to the machine.
Inspect the unit every 3-4 months (depending
on how often the unit is used) and use
compressed air to remove any dust deposits.
CAUTION!
Only use dry compressed air for cleaning.
Do not point the jet of air at the electronic
circuits.
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 fi ne abrasive paper.
Swirl Ring:
Verify the are no burns or cracks or that airfl ow
holes are not obstructed. If damaged, replace
immediately.
Electrode:
Replace electrode when crater settling on
emitting surface is about 5/64”.
WARNING!
• Before disassembling to the torch let it cool
for at least the “postgas” period.
• We recommend replacing the electrode and
tip AT THE SAME TIME.
• Be sure to install the torch parts in the correct
order.
• Be carefull that swirl ring is assembled
properly.
• Reassemble shield cup screwing tightly and
manually.
• Never assemble shield cup without having
assembled electrode, swirl ring and tip before
hand.
• 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
effi cient 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 unit is equipped with a fi lter for the
compressed air. This fi lter is fi tted with a knob
for the manual drain of the condensation. Purge
periodically to remove the water/oil in the fi lter
by following the instructions of paragraph
“Compressed air”.