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User Manual
Power on the cooling unit. Set the pump to the highest speed setting until
most of the air in the cooling loop has been pushed into the reservoir. Once
this occurs, the liquid noise will drop. This process can take several minutes,
depending on the filling technique and what’s connected to the system.
During this process, components may need to be tilted gently to
assist with air evacuation. The reservoir level will decrease dur-
ing this procedure. Remove the fill port cap and add more liquid
as needed.
Maximum and minimum fill markings are provided on the back side
of the unit to help maintain the coolant level.
Cut tubing into two segments. You
will need to connect each to the rear
nozzles.
Each hose connection will use a threaded compression
ring or hose clamp to keep it secure. Be sure to thread
the compression ring or hose clamp onto the hose
before attaching it.
Squeeze the tube while pushing it firmly over
the fitting. Tubing should completely cover the
fitting or barb.
Tighten the connection by sliding the
compression nut down over the fitting and
screwing securely. For hose barbs, use pliers
to move it into the proper position before
releasing.
Slowly fill the system with coolant.
To maintain
the product warranty, use only Koolance
approved coolant.
Many alternative liquids
and additives can cause permanent damage
to the cooling unit (through chemical reaction,
corrosion, biological growth, thermal expan-
sion, viscosity, etc.).
Once all devices (cold plates, fittings,
etc.) have been connected with tub-
ing, the system can be filled with coolant.
The fill port is located on top of the system over the
reservoir. Remove the large slot-headed screw with
a screwdriver or large coin.
Coolant Filling and Powering-On
WARNING
:
Most coolants are electrically conductive. Use caution
when filling the system, and keep all liquids away from electronics and
power cables. Keep the primary AC power cable unplugged whenever
filling or draining coolant.
!
Replace the fill port on the reservoir.
Do not overtighten the fill
port.
EXC-450 requires a 24VDC,
230W power supply (not
included).
Connect wires to the positive “+”
and negative “-” terminals, as
labeled on the back of the unit.
CAUTION:
The chiller is specific to one input voltage and polarity
direction. Supply only the proper input voltage and polarity, as labeled
near the power terminals. Supplying the improper voltage or polarity
can damage the unit and is not covered by the product warranty.
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