Advertisement
A-3
securely. WARNING: Failure to wire as instructed
may cause personal injury or damage to equipment.
To be installed or checked by an electrician or quali-
fied person only. Use of normal 20 amp household
breakers may result in over current trips. If breaker
trips occur, reduce the cutting current output until nui-
sance trips stop.
To achieve the full 25 amp output capability of the
machine with 115 VAC input, remove the 15 amp or
20 amp plug on the input cord and install a 30 amp or
50 amp plug designed for 115 VAC (NEMA style 5-
30P or 5-50P). Follow the instructions included with
the plug. Connect to an appropriate branch circuit with
a mating receptacle.
The PRO-CUT 25 performs best when connected to
230VAC inputs. To change over to 230VAC operation,
install a 230VAC plug with a current rating equal to or
greater than 20 amps.
For use on engine drives, keep in mind the above
input draw restrictions and the following precaution.
The PRO-CUT 25 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 400 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 200 & 250 engine drives
Commander 300, 400, & 500 engine drives
Many engine drives do not meet these conditions (eg
Miller Bobcats, etc). Operation of the PRO-CUT 25 is
not recommended on engine drives not conforming to
these conditions. Such combinations may overvoltage
the PRO-CUT 25 power source.
GAS INPUT CONNECTIONS
Supply the PRO-CUT 25 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.).
INSTALLATION
NOTE: Oil in the air supply to the PRO-CUT 25 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
thread at the rear of the machine. To use the air
BSPP
fitting supplied with the machine (packaged in the con-
sumable kit), apply teflon tape to the fitting threads and
install the fitting in the port at the rear of the machine.
• If compressed air is being used, it is highly recom-
mended that an inline prefilter be installed in the air
supply line ahead of the air connection to the PRO-
CUT's coalescing filter. While the coalescing filter is
used to remove small amounts of oil and water
aerosol particles from the air supply line, the prefilter
can be used to remove larger particulates before
they reach the coalescing filter element.This will pro-
long the life of the coalescing filter element by up to
six times what it would be without the prefilter, and in
turn, prolong the life of the PRO-CUT torch and con-
sumables as well.
• A standard nominal 5 micron inline prefilter is recom-
mended; however, for optimum performance,select
a prefilter with a 3 micron absolute rating. If these fil-
ter ratings are unavailable, anything with a rating
less than, or equal to, 20 micron would be accept-
able to use. In line filter elements will generally filter
the air with little restriction to the airflow until the ele-
ment is about 75 % contaminated. After this point,
there will be a noticeable pressure drop in the
line.Filter elements should be replaced when a pres-
sure drop of 8-10 psi is indicated; however, for opti-
mum performance of the PRO-CUT, the filter ele-
ment should be replaced at or before the pressure
drop reaches 8 psi. Be sure to select a prefilter that
will accommodate the necessary flow rating for the
PRO-CUT as specified in the Installation section of
this instruction manual under the Gas Input
Connections heading.
• While it is recommended that an in line prefilter be
placed ahead of each PRO-CUT that may be
installed in a shared air supply line, one large inline
prefilter may instead be used to accommodate sev-
eral PRO-CUTs simultaneously. If a shared prefilter
is desired, it must be rated to provide the necessary
flow rate, as specified, to ensure proper operation of
each of the PRO-CUTs sharing a connection.
PRO-CUT 25
A-3
1
/
-
19
4
Advertisement
