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 connecting power cord to input power.
TURN THE INPUT POWER OFF USING THE DIS-
CONNECT 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 40 “off”
before connecting or disconnecting output cables.
• Connect the PRO-CUT 40 grounding terminal locat-
ed on the side of the case back to a good electrical
earth ground.
DISCHARGE INPUT CAPACITORS BEFORE
WORKING INSIDE MACHINE.
------------------------------------------------------------------------
LOCATION
Place the PRO-CUT 40 where clean cooling air can
freely circulate in through the side louvers and out
through the front opening. 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 next section entitled
“High Frequency Interference Protection”.
A source of clean, dry, compressed air or nitrogen
must be supplied to the PRO-CUT 40. Oil in the air is
a severe problem and must be avoided. The supply
pressure must be between 70 and 150 psi (482 and
1032 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
The PRO-CUT 40 employs a solid state high frequen-
cy torch starting circuit which drastically reduces high
frequency emissions from the machine compared with
spark gap type high frequency generators.
Radiated interference can develop, however, 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’ (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.
NOTE:
The machine frame MUST also be grounded -
see paragraph under “Electrical Input
Connection”. The work terminal ground does
not ground the machine frame.
(5) 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 performance
resulting from lost high frequency power.
– 8 –
WARNING
WARNING