Lincoln Electric IM595-A manual GAS Input Connections, Output Connections

A-5 INSTALLATION A-5

GAS INPUT CONNECTIONS

Supply the PRO-CUT 80 with clean compressed air or nitrogen.

•Supply pressure must be between 80 psi(5.6kg/cm2) and 120 psi(8.4kg/cm2).

•Pressure gage, located on the front of the machine, should be set to approximately 70 psi(4.9kg/cm2) for a 25ft.(7.6m) torch and 75 psi(5.3kg/cm2) for a 50 ft.(15.2m) torch while gas is flowing (purging or cut- ting).

•Flow rate should be approximately 8.0 cfm (227 I/min.).

NOTE: Oil in the air supply to the PRO-CUT 80 can cause severe problems. Use only a clean air supply.

•Connect the gas supply to the PRO-CUT 80 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 particles from the air supply line, the prefilter 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 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 pressure drop of 8-10psi(.56-.70kg/cm2) is indicated; however, for optimum performance of the PRO-CUT, the filter element should be replaced at or before the pres- sure drop reaches 8 psi(.56kg/cm2). Be sure to select a prefilter that will accommodate the neces- sary 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 PRO- CUT 80 regulator should never exceed 120 psi(8.4kg/cm2).

•Install a hose between the nitrogen gas cylinder reg- ulator and the PRO-CUT 80 gas inlet.

WARNING

•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 cylin- der.

•Keep cylinder away from live electrical parts.

•Maximum inlet pressure 120 psi(8.4kg/cm2).

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OUTPUT CONNECTIONS

Torch Connection

The Pro-Cut 80 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'(7.6m) or 50’(15.2m) cables.

All torches are connected to the Pro-Cut 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.

For more information on the torch and its components, refer to the PCT80 Operator’s Manual (IM588 latest version).

PRO-CUT 80