WELDTECH WT40DC, Руководство по эксплуатации

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6
Quick Start Guide
Electrical Power Supply
The WT40DC is designed to operate on a 15A 230V
AC power supply. If an extension cord must be used,
it should be a heavy duty version with a minimum
cable core size of 2.5mm2. It is recommended to use
the Euroquip industrial duty 15A extension lead, part
number 16895.
Air Regulator Pressure Adjustment (5)
Correct air pressure is critical for plasma cutting. In-
correct air pressure will cause poor cut quality, lack
of cutting power, damage to the plasma torch and
consumables and potentially damage the power
source. Optimum air pressure is between 4 and 5 bar
(60-75psi).
Air pressure should be set with the air flowing
through the torch, as the pressure with the air flow-
ing will normally be less than static pressure, due to
flow losses through the torch system. To unlock the
pressure regulator knob in order to adjust it, pull the
knob upwards. Once the pressure is set correctly,
push the knob down again to lock it into place.
Tips & Tricks
Air Filter/ Water Separator
As with correct air pressure, clean, dry air is critical for
plasma cutting machine performance and reliability.
The WT40DC is designed with an internal air filtra-
tion/ moisture separator to assist with providing suit-
able air supply. The moisture separator is self-drain-
ing, the water drain tube exits out the bottom of
the machine casing (14). It is normal to see moisture
coming from this drain tube. If excessive amounts of
water or oil are being produced from the condensate
drain, the compressed air supply should be checked
for issues.
Plasma Torch Consumables
It is very important to recognise that plasma torch
consumables wear as part of normal operation and
should be replaced in a timely manner. Operating a
torch with worn consumables will cause poor cut-
ting results and possible damage to the torch and
machine itself. Damage caused by untimely replace-
ment of consumables will not be covered by war-
ranty.
Use the following guidelines to determine when
consumables should be replaced:
Cutting Tips:
the cutting tip has a small calibrated
orifice that the plasma passes through. If the orifice
becomes partially blocked, deformed or enlarged,
the cutting tip should be replaced.
Electrodes:
the electrode has a small silver ‘hafnium’
insert in the end of the tip. This is what generates the
plasma ions. Once the hafnium insert is used up or is
damaged the tip must be replaced.
Swirl Ring/Retaining Cap:
these should be replaced
if broken, chipped, cracked or badly heat damaged.
Tips and Electrodes wear reasonably evenly and it is
normal practice to replace them both together. If a
new tip is inserted with a worn electrode the tip will
wear much more quickly than if the electrode was
also replaced at that same time.
If tips or electrodes are wearing much faster than the
other component it is likely to be caused by one of
the following: poor operator technique, incorrect air
supply or damaged torch head.
It is also very important to only use genuine Strata
or Weldtech consumables and parts for the WT40DC
plasma torch. They are engineered to suit the ma-
chine and non-genuine items may cause lack of per-
formance, short life span, torch and machine dam-
age and void warranty.
Duty Cycle Rating
Cutting duty cycle is the percentage of actual cutting
time that can occur in a ten minute cycle. E.g. 20% at
40 amps - this means the plasma cutter can operate
at 40 amps for 2 minutes and then the unit will need
to be rested for 8 minutes.
All duty cycle ratings are based on an ambient air
temperature of 40°C with 50% humidity, which is the
international standard for such a rating. In an envi-
ronment with temperatures exceeding 40°C, the
duty cycle will be less than stated. In ambient tem-
perature less than 40°C, duty cycle performance will
be higher.