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Electrical
Requirements
The unit construction provides protection against the risk of electrical
shock by grounding appropriate metal parts. The protection may not
function unless the power cord is connected to a properly grounded
outlet. It is the user's responsibility to assure a proper ground connec-
tion is provided.
Refer to Section II, Specifications, and to the serial number label on the rear of
the unit for the specific electrical requirements of your unit. Ensure the voltage
of the power source meets the specified voltage, ±10%. Transient overvolt-
ages must comply with OVERVOLTAGE CATEGORY II. For mains supply,
the minimum and normal category is II.
The CFT-300 is supplied with a junction box located behind the controller
panel. Wire the power connections in accordance to local, state and federal
electrical codes. Double check all wiring to make sure it is properly connected
and protected from the elements.
The CFT-300 is also equipped with a compressor crankcase heater. The
crankcase heater warms the oil in the compressor and prevents refrigerant
from mixing with the oil. Before start up, the unit must be connected to its
power source for at least 12 hours. This allows time for the oil to be heated and
separate from the refrigerant.
Plumbing
Requirements
Before installing the unit to an instrument that
previously used tap water as a cooling fluid,
flush the instrument several times to remove
any rust or scale that has built up. The manu-
facturer of the instrument should be able to
recommend a cleaning fluid for their equipment.
The plumbing connections are located on the
rear of the unit and are labelled OUTLET/
SUPPLY and INLET/RETURN. CFT-25 to CFT-
150 connections are ½ inch FPT,
CFT-150s with CP-55 pumps are ¾ inch and
CFT-300 connections are ¾ inch FPT.
Remove the plastic protective plugs from both plumbing connections.
Connect the OUTLET/SUPPLY fitting to the inlet of the instrument being
cooled. Connect the INLET/RETURN fitting to the outlet of the instrument
being cooled.
Never connect the fittings to your building water supply or any water
pressure source.
Two sets of plumbing adapters are included with CFT-25 to CFT-150 units. One
set of adapters will accept
3
/8 inch ID tubing. The other set will accept
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