12 Rev 001, 01/12
© SP Scientific 2012
Fluid Filling
While operating at or above ambient temperature (approximately 72 °F or 22 °C), fill
the reservoir with your selected fluid until the fluid is about 1 inch below the gasket.
If you add fluid while the system is at a sub-ambient temperature and you fail to drain
fluid before returning the system to room temperature, the fluid may expand and
overflow the fluid reservoir.
Notes: Fluids will typically contract when cooled and expand when heated.
The gasket at the top of the fluid reservoir does not provide a liquid tight seal.
If the fluid reservoir chamber is overfilled, the liquid will flow over the rim of the fluid
reservoir into the polyurethane insulation. Organic solvents will attack, dissolve and/or
render ineffective the chamber insulation. When the insulation is saturated with
solvent, the CharpyCool™ may be unable to reach its maximum low temperature.
IF THE RESERVOIR IS OVERFILLED, THE FLUID MAY OVERFLOW THE RESERVOIR RIM AND
SEEP INTO THE POLYURETHANE INSULATION. ORGANIC SOLVENTS WILL ATTACK AND
DAMAGE THIS INSULATION MATERIAL, RENDERING THE INSULATION INEFFECTIVE.
WITHOUT ADEQUATE INSULATION, THE CHARPYCOOL™ WILL NOT REACH MAXIMUM LOW
TEMPERATURES.
Magnetic Stirrer
You may switch on your magnetic stirrer once the reservoir has been properly filled
with fluid. The magnetic stirrer must be on for the system to operate properly. Refer to
the magnetic stirrer operation section of the previous chapter for additional
information.
Note: Do not operate the magnetic stirrer without fluid in the reservoir. Be sure the stirrer is
turned off before emptying fluid from the reservoir.
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