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GAS INPUT CONNECTIONS
Supply the PRO-CUT 55 with clean compressed air or
nitrogen.
• Supply pressure must be between 80 psi and 150
psi.
• Pressure guage, located on the front of the machine,
should be set to approximately 70 PSI for a 25 ft.
torch and 75 PSI for a 50 ft. torch while gas is flowing
(purging or cutting).
• Flow rate should be approximately 6.0 cfm (170
I/min.).
NOTE: Oil in the air supply to the PRO-CUT 55 can
cause severe problems. Use only a clean air
supply.
• Connect the gas supply to the PRO-CUT 55 regula-
tor
• Compressed gas should be supplied to the fitting
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 particales from the air supply line, the pre-
filter can be used to remove larger particulates
before they reach the coalescing filter element. This
will prolong 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 consumables as well.
• A standard nominal 5 micron inline prefilter is rec
ommended; however, for optimum performance,
select a prefilter with a 3 micron absoluterating.If
these filter ratings are unavailable, anything with a
rating less than, or equal to, 20 micron would be
acceptable to use. Inline 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 bea noticeable pressure drop in the line.
Filter elements should be replaced when a pressure
drop of 8-10 psi is indicated; however, for optimum
performance 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
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.
INSTALLATION
• While it is recommended that an inline prefilter be
placed ahead of each PRO-CUT, that may be in
stalled in a shared air supply line, one large in line
prefilter may instead be used to accommodate sev-
eral PRO-CUT's simultaneously. If a shared pre is
desired, it must be rated to provide the necessary
flow rate, as specified, to ensure proper operation of
each of the PRO-CUT's 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 PRO-
CUT 55 regulator should never exceed 150 psi.
• Install a hose between the nitrogen gas cylinder
regulator and the PRO-CUT 55 gas inlet.
• Never lift machine with cylinder attached.
• Never allow the cutting torch to touch the cylin-
der.
• Keep cylinder away from live electrical parts.
• Maximum inlet pressure 150 psi.
OUTPUT CONNECTIONS
Torch Connection
The Pro-Cut 55 is sent from the factory with a PCT 80
cutting torch. Additional cutting torches can be
ordered from the K1571 series. Hand-held and mech-
anized torches come with 25' or 50' cables.
All torches are connected to the Pro-Cut with a quick
connect on the casefront for easy change over. This
feature is excellent for changing between a hand cut-
ting torch and a mechanized torch.
For more information on the torch and its components,
refer to the PCT80 Operator's Manual (IM588 latest
version).
PRO-CUT 55
WARNING
CYLINDER could explode if dam-
aged.
• Keep cylinder upright and
chained to a fixed support.
• Keep cylinder away from areas
where it could be damaged.
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