Lincoln Electric IM723-A manual Turning the System on, Cooling Efficiency

B-2 OPERATION B-2

TURNING THE SYSTEM "ON"

CAUTION

After connecting the Precision Tig and Tig Torches per Installation Section, plug the unit into

a115V NEMA electrical receptacle for start-up operation. Be certain that the power input into the unit matches the Cooler's rated input.

The following should always be observed when operating the Under-Cooler Cart:

•Check the coolant reservoir level daily.

•Keep the reservoir full especially after changing any water lines.

•The cooler should turn on as soon as an arc is struck and remain on approximately 8 min. after welding is stopped.

•Be certain that the cooler is ON by checking the flow under the fill cap.

•Never operate the cooler with the reservoir fill cap removed after checking the flow.

•Avoid placing the Under-Cooler Cart and TIG Welder near a flux hopper or an area where dust build-up is extreme.

•Avoid kinking or putting sharp bends in any water lines.

•Keep all water lines clean and free of any block- age.

•Do not operate cooler without coolant in reser- voir. Never run pump dry.

•Never lift the Precision TIG by its lift bale once the under-cooler cart has been installed.

•Never lift the Precision TIG and Under-Cooler cart by its handle.

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You will be able to hear the fan running and feel air- flow out of the back of the unit when the cooler is operating. The cooler will run continuously unless it is plugged into the switched receptacle on the power source (bottom 115V receptacle).

The coolant FLOW INDICATOR is accessed by removal of the fill cap. Actual return flow is directly vis- ible, via the fill opening of the reservoir with the draw- er open. SHUT THE COOLER DRAWER DURING NORMAL OPERATION.

When first starting the unit, check all of the coolant hoses to insure that no water leaks are present. Water leakage causes poor welding performance, poor cooling performance, low welding component life and potential electrical safety hazards.

COOLING EFFICIENCY

The high cooling efficiency of the Under-Cooler cart offers a cooler, more comfortable weld than conven- tional air-cooled procedures as well as leading com- petitors water cooled systems.

The Under-Cooler cart effectively removes the heat of the arc away from the torch handle and places it into the exiting air flow at the back of the Cooler. Ambient air temperature affects the coolant temperature of the cooler.

Unlike other water coolers that depend on bulky reser- voir size, the high efficiency components of the Under- Cooler cart allows the reservoir size to be small. The result is a lightweight unit, in a drawer with additional storage space for welding accessories.

UNDER-COOLER CART