Lincoln Electric IM639 RED-D-ARC VIPER - Manual (Page 13)

A-5 INSTALLATION A-5
GAS INPUT CONNECTIONS
Supply the VIPER with clean compressed air or nitro-
gen.
• Supply pressure must be between 80 psi
and 150 psi.
• Flow rate should be approximately 6.0
cfm (170 I/min.).
NOTE: Oil in the air supply to the VIPER can cause
severe problems. Use only a clean air sup-
ply.
• Connect the gas supply to the VIPER regula-
tor.
• Compressed gas should be supplied to the fit-
ting connection mounted on the filter at the
rear of the machine. If necessary, this fitting
can be removed allowing plumbing access
through the 1/4” NPT input port on the filter
body.
• 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 filter
ratings are unavailable, anything with a rating less
than, or equal to, 20 micron would be acceptable to
use. In line filter elements will generally filter the air
with little restriction to the airflow until the element is
about 75 % contaminated. After this point, there will
be a noticeable pressure drop in the line. Filter ele-
ments should be replaced when a pressure drop of
8-10 psi is indicated; however, for optimum perfor-
mance of the PRO-CUT, the filter element should be
replaced at or before the pressure drop reaches 8
psi. Be sure to select a prefilter that will accommo-
date 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.
NOTE: When using nitrogen gas from a cylinder, the
cylinder must have a pressure regulator.
• Maximum psi from nitrogen gas cylinder to
VIPER regulator should never
exceed 150 psi.
• Install a hose between the nitrogen gas
cylinder regulator and the VIPER
gas inlet.
CYLINDER could explode if damaged.
• Keep cylinder upright and chained to a fixed sup-
port.
• 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 Connection
The VIPER is sent from the factory with a PCT 80 cut-
ting torch. Additional cutting torches can be ordered
from the K1571 series. Hand-held and mechanized
torches come with 25' or 50’ cables.
All torches are connected to the VIPER with a quick
connect on the case front for easy change over. This
feature is excellent for changing between a hand cut-
ting torch and a mechanized torch. This feature is also
handy for troubleshooting.
For more information on the torch and its components,
refer to the PCT80 Operator’s Manual (IM588 latest
version).
VIPER
WARNING