GAR CUT (V. PROFESSIONAL). Instructions Manual.
19
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MAINTAIN THE STATE AND EFFICIENCY OF
THE AIR DIFFUSER AND NOZZLE-HOLDER.
The air outlet holes of these components must be
free from occlusions. Faulty air diffusion causes
the torch to heat up too much, with the subsequent
deterioration of the torch head.
)
KEEP THE NOZZLE CLEAN OF
OCCLUSIONS AND SLAG
Clean the nozzle from time to time. If there is
slag on the surface base there could be arc
ignition problems. Use a cleaning brush, never
sharp elements, as the nozzle hole could be
deformed.
)
MAKE SURE THE ELECTRODE SEATING IS
CLEAN AND EVEN.
)
IMMEDIATELY CHANGE A WORN
ELECTRODE OR A NOZZLE.
We can say that there is wear:
- If the middle hole of the electrode is 2 mm.
- If the nozzle has an irregular hole or increased
diameter. (In this case there will be no
perpendicularity in the cutting section).
)
DO NOT CUT WITH THE TORCH VERY
HOT. (Wait until the air cools it totally).
)
BRUSH THE NEW ELECTRODES.
(Polish the electrode.)
)
KEEP THE ELECTRIC CONNECTION OF
THE NOZZLE-HOLDER CLEAN (SECURING
THREAD).
,
MAINTAIN THE SAFETY SYSTEM OF THE TORCH ACTIVE.
CHAPTER 5. ANOMALIES. PROBABLE CAUSES. POSSIBLE SOLUTIONS.
SYMPTOM. ANOMALY.
PROBABLE CAUSE.
POSSIBLE SOLUTION.
The machine has no voltage in one or all its
vital elements.
Make sure there is voltage at the entry to the
machine; if not the intake must be changed. It is
advisable to see if any magnetothermal has "blown".
Check that fuse F1 is not open.
GENERAL PROBLEM.
NOTHING WORKS
.
The machine panels must be removed testing the
logical points of the electrical diagram.
LIMITER TRIPS
Magnetothermal switch has low gauge for the
case (if it is the main one the installation may
have an installed power of under 15 kw
minimum). There may be a short circuit, which
is what causes the limiter to trip.
Change the magnetothermal for another larger
gauge one. It is important for the magnetothermal
switch to have a characteristic slow type curve. In the
event that the electrical installation has limited power
the cutting work must be tested at lower current
levels. (Pos. 1 of switch l2).
Low air pressure. Machine not operative. Red
light on.
Increase the intake pressure by means of pressure
reducing valve situated on the rear of the apparatus.
Transformer overheated. Machine not
operative.
Amber light on. Wait until the machine cools down.
Failure in the torch safety system. The nozzle-
holder of the pistol may not be perfectly
tightened.
Screw in the nozzle-holder well.
Failure of the pistol switch which does not
make perfect contact.
Change torch microswitch.
ALTHOUGH THE MACHINE IS
CONNECTED AND WITH LIGHT
C ON, THERE IS NO REACTION
WHEN PRESSED
Main electronic plate SCP-1 faulty.
Replace electronic plate SCP-1
Air pressure set at a high value.
Decrease it to a value of 5.3 bar with pressure
reducing valve R.
New electrode with insulating surface layer.
Brush electrode. "Polish the electrode".
Slag on flat part of the nozzle.
Clean the nozzle properly.
Excessive wear of the electrode.
Replace the electrode.
Low quality electrode or nozzle.
Use original spares.
The preflow cycle is not completed as the
pushbutton is released quickly.
Keep the pushbutton pressed for more than one
second.
The high frequency electronic plate GHF is not
excited with 230 V.
Replace electronic control plate. Supervise
connections and wiring.
WHEN PRESSED, EVEN
THOUGH AIR COMES OUT, THE
ARC DOES NOT IGNITE OR THE
ARC "BACKFIRES".
The breakdown of the central control plate is
reiterative.
Check the degree of insulation of the equipment.
Blow the inside with compressed air.
