Lincoln Electric IM594 PRO-CUT 20 - Manual (Page 9)

A-3 INSTALLATION
PRO-CUT 20
A-3
WARNING: Failure to wire as instructed may cause
personal injury or damage to equipment. To be
installed or checked by an electrician or qualified per-
son only. Use of normal 20 amp household breakers
may result in over current trips. If breaker trips occur,
reduce the cutting current output until nuisance trips
stop.
The Pro-Cut 20 performs best when connected to
230VAC inputs. To change over to 230VAC operation,
install a 230VAC plug with a current rating greater
than 15 amps.
For use on engine drives, keep in mind the above
input draw restrictions and the following precaution.
The Pro-Cut 20 can be operated on engine driven
generators as long as the 230 volt auxiliary meets the
following conditions:
• The AC waveform peak voltage is below 375 volts*.
• The AC waveform frequency is between 45 and 65
Hz.
• The RMS voltage of the AC waveform is always
greater than 208VAC *.
*
for 115 VAC input divide these values in half
The following Lincoln engine drives meet these condi-
tions when run in the high idle mode:
Ranger 300 engine drives
Commander 400 engine drives
Many engine drives do not meet these conditions (eg
LE North America Ranger series, Miller Bobcats, etc).
Operation of the above stated power sources is not
recommended on engine drives not conforming to
these conditions. Such combinations may overvoltage
the Pro-Cut 20 power source.
GAS INPUT CONNECTIONS
Supply the PRO-CUT 20 with clean compressed air or
nitrogen.
• Supply pressure must be between 80 psi
and 150 psi.
• Flow rate should be approximately 4.0
cfm (113 I/min.).
NOTE: Oil in the air supply to the PRO-CUT 20 can
cause severe problems. Use only a clean air
supply.
• Compressed gas can be supplied either
through the air fitting supplied with the
machine or through the
1 /
4
-19 BSPP thread at
the rear of the machine. To use the air fitting
supplied with the machine (packaged in the
consumable kit), install the fitting in the port at
the rear of the machine.
NOTE: When using nitrogen gas from a cylinder, the
cylinder must have a pressure regulator.
• Maximum psi from a nitrogen gas cylinder to
the PRO-CUT 20 regulator should never
exceed 150 psi.
• Install a hose between the nitrogen gas
cylinder regulator and the PRO-CUT 20
gas inlet.
CYLINDER could explode if damaged.
• Keep cylinder upright and chained
to a fixed support.
• Keep cylinder away from areas
where it could be damaged.
• Never lift machine with cylinder
attached.
• Never allow the cutting torch to touch the
cylinder.
• Keep cylinder away from live electrical
parts.
• Maximum inlet pressure 150 psi.
__________________
OUTPUT CONNECTIONS
Torch
The Pro-Cut 20 is sent from the factory with a PCT 20
cutting torch installed. Additional cutting torches can
be ordered from the K1615 series. Hand-held torches
come with 15' or 25’ cables.
Read and understand this entire section before oper-
ating the machine.
WARNING