Lincoln Electric IM723-A - Manual (Page 14)

B-2 OPERATION B-2
TURNING THE SYSTEM "ON"
After connecting the Precision Tig and Tig
Torches per Installation Section, plug the unit into
a 115V 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
CAUTION