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INSTALLATION
SAFETY PRECAUTIONS
● Read the safety precautions at the beginning of
this Operator's Manual before proceeding.
● Only personnel that have read and under-
stood this Operator’s Manual should install and
operate this equipment.
● Machine must be connected to system ground per
any national, local or other applicable electrical
codes.
●
The power switch is to be in the “OFF” position when
connectiong power cord to input power.
TURN THE INPUT POWER OFF USING THE
DISCONNECT SWITCH AT THE FUSE BOX
BEFORE ATTEMPTING TO CONNECT THE
INPUT POWER LINES.
• Only qualified personnel should perform this installa-
tion.
• Turn the power switch on the PRO-CUT “off” before
connecting or disconnecting output cables.
• Connect the PRO-CUT grounding terminal located
on the side of the case back to a good electrical
earth ground.
------------------------------------------------------------------------
LOCATION
Place the PRO-CUT where clean cooling air can
freely circulate in through the front intake and out
through the rear louvers. Dirt, dust or any foreign
material that can be drawn into the machine should be
kept at a minimum. Failure to observe these precau-
tions can result in excessive operating temperatures
and nuisance shutdown of the machine. Before plan-
ning the installation, read the section entitled “High
Frequency Interference Protection”.
A source of clean, dry, compressed air or nitrogen
must be supplied to the PRO-CUT. Oil in the air is a
severe problem and must be avoided. The supply
pressure must be between 70 and 120 psi (482 and
827 kPa). The flow rate is approximately 4.7 cfm (133
l/min.). Failure to observe these precautions could
result in excessive operating temperatures or damage
to the torch.
HIGH FREQUENCY INTERFERENCE
PROTECTION
Since the spark gap oscillator in the high frequency
generator in the machine is similar to a radio transmit-
ter, improper machine installation can result in radio
and TV interference or problems with nearby electron-
ic equipment.
Radiated interference can develop in the following
four ways:
(1) Direct interference radiated from the machine.
(2) Direct interference radiated from the cutting
leads.
(3) Direct interference radiated from feedback into
the power lines.
(4) Interference from reradiation of “pickup” by
ungrounded metallic objects.
Keeping these contributing factors in mind, installing
equipment per the following instructions should mini-
mize problems.
(1) Keep the machine power supply lines as short as
possible.
(2) Keep the work and torch leads as short as possi-
ble and as close together as possible. Lengths
should not exceed 50 ft. (15.2 m). Tape the
leads together when practical.
(3) Be sure the torch and work cable rubber cover-
ings are free of cuts and cracks that allow high
frequency leakage.
(4) Keep the torch in good repair and all connections
tight to reduce high frequency leakage.
(5) Keep all access panels and covers securely in
place
NOTE: The machine frame MUST also be grounded -
see CAUTION under “Input Connection”, sec-
tion. The work terminal ground does not ground
the machine frame.
(6) When the machine is enclosed in a metal build-
ing, several good earth driven electrical grounds
around the periphery of the building
are recommended.
Failure to observe these recommended installation
procedures may cause radio or TV interference prob-
lems and result in unsatisfactory cutting or gouging
performance resulting from lost high frequency power.
– 9 –
WARNING