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A-6
INSTALLATION
LN-742 & LN-742H
A-6
WATER CONNECTIONS
(FOR WATER COOLED GUNS)
The LN-742 must have a K590-1 Water Solenoid Kit
installed (see Section C, Accessories). Refer to
Figure A.5 and perform the following steps:
The maximum water pressure permitted for use with
the LN-742 is 55 psi (3.8 bar).
NOTE: If not using a Lincoln water cooler, and if your
water cooling device is not designed for use with a
waterline solenoid valve, you may remove the solenoid
and screw the male fitting (after applying sealant)
directly into the brass manifold block.
1. Using male 5/8-18 UNF left-hand thread fittings,
connect appropriate water hoses to the coolant
inlet and outlet on the back of the LN-742.
Connect the other ends of these hoses to the
appropriate ports on your water cooling units.
2. In the event the water line fittings on your water
cooled gun are incompatible with the female quick
connects on the front of the LN-742, male quick
connects are provided for installation on 3/16 in.
I.D. hose (customer to provide appropriate
clamps). The feeder connectors self seal when
disconnected.
FIGURE A.5 – WATER CONNECTIONS.