Circulation Of Coolant In The Cooler; Coolant And Filling The Reservoir; Priming Pump (Only For First Time Use) And Bleeding The Cooling System - Lincoln Electric Cool Arc 22 Operator's Manual

COOL ARC ® 22

CIRCULATION OF COOLANT IN THE COOLER

FIGURE 4
WARNING
Avoid kinking or putting sharp bends in any coolant lines.
Never operate the cooler with the case off.

COOLANT AND FILLING THE RESERVOIR

WARNING
Before filling the coolant reservoir, turn off the welder and
disconnect the cooler's power lead from the welder.
Avoid contact with coolant. Wear waterproof gloves and
protective eye wear.
Warning: The cooler can be filled and used only in the horizontal
position.
Use Lincoln Electric KP4159-1 low conductivity coolant.
Do not use pre-packaged welding industry coolants. These
coolants may contain oil-based substances, which attack the
plastic components of the cooler. Once added to the cooler, these
substances are impossible to purge from the water lines and heat
exchanger.
Do not use automotive anti-freeze. These coolants will damage
the pump and block the heat exchanger, affecting cooling
performance.
WARNING
Never operate the cooler with the reservoir empty.
Do not start the cooler with less than 0.4 gallons of coolant.
Operating without enough coolant can prevent full priming of the
system and may damage the pump.
Priming Pump (only for first
time use) and Bleeding the
Cooling System
• Assemble the welding setup.
• Connect the short hose with quick water connectors (included
with the equipment) to the cooler's inlet and outlet sockets
(Figure 5).
• Fill the coolant reservoir.
• Remove the reservoir cap to prevent generating a partial
vacuum.
• Place the flow sensor to the off '0' position.
• Turn the power source on.
• Wait 30 seconds until the coolant fully circulates through the
cooling system and returns into the reservoir.
• Turn the power source off.
• Disconnect the short hose with quick water connectors.
• Connect the torch hoses – Figure 6.
• Turn the power source on.
• Wait 30 seconds until the coolant fully circulates through the
cooling system.
• Review the coolant level and add coolant if coolant level is
below the minimum mark.
• Tighten the cap.
• Return the flow sensor to the on 'I' position.
B-3
OPERATION
FIGURE 5
Short Hose