Lincoln Electric IM723-A - Manual (Page 10)

A-3 INSTALLATION
UNDER-COOLER CART
A-3
NOTE: DO NOT ADD MORE THAN 2 GALLONS
(7.6 LITERS) OF COOLANT INTO THE RESER-
VOIR. The fill cap contains a pressure release air
hole, which must not be blocked by overfilling the
reservoir with coolant.
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Be certain to replace the reservoir fill cap when the
reservoir is full. Simply press on the inside center of
the fill cap until the cap snaps into place. Operation of
the cooler without the fill cap in place can cause poor
cooling efficiency, evaporation loss of coolant and
reduced product life.
COOLANT CONNECTIONS
The fittings located on the back center of the cooler
drawer are two female 5/8-18 left-hand threaded fit-
tings (CGA Style). The hoses provided with this unit
are color coded with red (hot) and blue (cold) tape that
should be matched up with the decals, also color
coded, on both the cooler and the TIG machine.
Recommended torque value for the 5/8-18 LH fittings
is 12 – 15 ft lbs. If a torque wrench is not available,
snug the fittings and check for leaks.
Refer to Figure A-1 for decal located adjacent to water
connections.
FIGURE A-1
Be certain that no leaks exist when the cooler is
turned on. A leak will deplete reservoir volume,
causing poor cooling, performance and reducing
torch life.
Note: Be certain that only 5/8-18 left handed male
nuts with clean and smooth threads are used on
your water hoses. Poor connections cause
coolant to leak at the fittings and will deplete the
coolant in the reservoir.
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If you have hose to make replacement hose assem-
blies but need to order the fittings and hardware, see
below for the correct part numbers to mate with the
Under-Cooler cart and the Precision TIG Machine.
Then follow the given instructions.
(2) T15007-2 Connector Nuts
(2) T15008 Nipples for 3/16" I.D. hose
(2) S10888-35 Hose Clamps
Remove the connector nut from the INLET hose by
making a straight cut 1/4"-1/2" (6-12mm) away from
the end of the nipple located inside of the hose. Take
the nipple and the connector nut ordered above and
insert the nipple into the connector nut so that the
threaded end of the connector nut points away from
the barbed end of the nipple. Twist the barbed end of
the nipple into the hose until the shoulder of the nipple
is flush with the end of the hose. Secure the hose onto
the nipple with the hose clamp to insure that the con-
nection is watertight. No water can leak from the con-
nection if it is properly attached. Repeat the procedure
for the OUTLET hose. When complete, follow the con-
nection procedure detailed above for connecting the
hoses to the cooler drawer fittings.
*The connector and nipple listed fit tightly onto 5/32"
(4.0mm) to 3/16" (4.8mm) inner diameter hose, but if
clamped tightly to the hose, can fit up to a .25
(6.4mm) inner diameter hose.
NOTE: Hoses have been provided with this product
and any replacement hoses, purchased or made,
should not deviate from their length. To replace the-
ses hoses from Lincoln Electric ORDER (1) S18453-
19 (HOT) AND (1) S18453-20 (COLD). Hoses too
long may be pinched when replacing the gas bottles
and hoses too short may be damaged opening the
cooler drawer.
CAUTION
CAUTION
COOLANT
OUT
COOLANT
IN
S25134