Filter
Top Products
A-4
INSTALLATION
MAGNUM COOLER 10-I & 20-I
A-4
When using the Magnum Cooler with other products,
consult the manufacturer’s recommendations for
coolant.
Do not use oil based coolants.
The unit can be filled either vertically or horizontally.
UNPLUG THE COOLER BEFORE FILLING THE
RESERVOIR.
Upright: Tilt the unit backward and pour 2 gallons (8.0
liters) of coolant into the reservoir fill hole through a
funnel.
or
If 1 gallon (4 liters) antifreeze or fill bottle is available,
tilt the unit forward until the bottle mates with the
reservoir fill hole. Then tilt the unit backward until the
fill bottle is emptied. Fill the unit with 2 gallons (8
liters) of coolant.
Lying down: Carefully add 2 gallons (8.0 liters) of
coolant through a funnel into the reservoir fill hole.
AVOID SPILLING COOLANT INTO THE FRONT
CASING OF THE UNIT.
Unit will be full when coolant lies just below the reser-
voir opening with the unit in its upright position.
NOTE: DO NOT ADD MORE THAN 2 GALLONS
(8 LITERS) OF COOLANT INTO THE RESERVOIR.
The fill cap contains a pressure release air hole
which must not be blocked by overfilling the reser-
voir with coolant.
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 Magnum Cooler without the fill cap in place can
cause poor cooling efficiency, evaporation loss of
coolant, and low product life.
WATER LINE CONNECTION
Two connector nuts and mating nipples are supplied
in each Cooler 10-I and 20-I model. The connector
and nipple fit tightly onto 4.0mm (5/32”) to 4.0mm
(3/16”) inner diameter hose, but if clamped tightly to
the hose can fit up to 6.4mm (.250”) inner diameter
hose.
To install water lines onto the Cooler, check if your
coolant hose mates with the 5/8-18 left hand female
thread in the connector block at the back of the unit.
If the connector nut on your water hose does not mate
with the connector block at the back of the Magnum
Cooler:
Remove the connector nut from the INLET hose by
making a straight cut 6-12mm (1/4-1/2”) away from
the end of the nipple located inside of the hose. Take
the nipple and the connector nut supplied with the
The case front sheet metal design allows for ease of
access to repair all internal components. The Phillips
head fasteners used to secure the casing match the
style of fasteners used in the pump head and other
major components. In this manner, an operator can
repair all major components in the unit using just a
Phillips head screwdriver. The case back trapezoidal
shape eliminates the possibility of the exit airflow of
the Cooler being choked when the Cooler is operated
lying horizontally. The exiting airflow is also pushed
back away from the unit so that hot air does not recir-
culate through the louvers in the case front.
A blow molded, high density one piece polyethylene
housing serves as both the reservoir and support
frame for the Coolers. The use of polyethylene plastic
gives a design that is lightweight and durable.
FILLING THE RESERVOIR
PROPER COOLANT ADDITION
FOR USE ABOVE FREEZING: Tap, distilled,
deionized, mineral water, or well water.
FOR USE BELOW FREEZING: 50% water and
50% automotive antifreeze mixture such as
Prestone, Peak or Zerex or 50% water and 50%
pure ethylene glycol mixture or any water alcohol
mixture.
DO NOT USE: Prepackaged welding industry
coolants. These coolants may contain oil-based
substances which attack the plastic components in
the pump of the Magnum Cooler and severely
reduce pump life. Once added to the Cooler, the
substances are virtually impossible to purge from
the water lines and heat exchanger.
To avoid freeze damage and water leakage in ship-
ment, every Cooler 10-I and 20-I unit is delivered
empty with no coolant in the system. To fill the unit,
locate the plastic snap-on reservoir fill cap at the front
middle of the unit. Remove the fill cap by pressing the
center of the cap inward while pulling at the tab on the
outer edge.
NOTE: The unit can be filled either vertically or hori-
zontally.
UNPLUG THE COOLER BEFORE FILLING
THE RESERVOIR.
For best results when using the Magnum Cooler with
Lincoln guns or torches, use distilled, deionized or
demineralized water, although if not available, tap
water can be used. If protection from freezing is
desired, use a 1 gallon (4 liter) automotive antifreeze
and 1 gallon (4 liter) tap water mixture. An alcohol or
glycol mixture with water is also acceptable.
MAR97