Amphenol Kaye CTR-40, User Manual, Page: 41 / 84

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7 General Operation
Pour Point: This represents a handling limit for the fluid.
Viscosity: Points shown are at 50 and 10 centistokes viscosity. When viscosity
is greater than 50 centistokes stirring is very poor and the fluid is unsatisfactory
for bath applications. Optimum stirring generally occurs at 10 centistokes and
below.
Fume Point: Indicates the point at which a fume hood should be used. This
point is very subjective in nature and is impacted by individual tolerance to dif-
ferent fumes and smells, how well the bath is covered, the surface area of the
fluid in the bath, the size and ventilation of the facility where the bath is located
and other conditions. This is also subject to company policy. In the graph we
assume the bath is well covered at this point.
Flash Point: The point at which ignition may occur. The point shown may be
either the open or closed cup flash point. Refer to the flash point discussion in
Section 7.1.8, Safety.
Boiling Point : At or near the boiling point of the fluid the temperature stability
is difficult to maintain. Fuming or evaporation is excessive. Large amounts of
heater power may be required to maintain the temperature because of the heat
of vaporization.
Decomposition:
The temperature may reach a point at which decomposition of
the fluid begins. Further increasing the temperature may accelerate decomposi-
tion to the point of danger or impracticality.
7.2 Stirring
Stirring the bath fluid is very important for stable temperature control. The
fluid must be mixed well for good temperature uniformity and fast controller
response. The stirrer is precisely adjusted for optimum performance.
7.3 Power
Power to the bath is provided by an AC mains supply. Refer to Section 3.1,
Specifications, for power details. Refer to and read the CAUTION at the front
of the manual concerning brownout and over voltage protection. Check the
back panel label for the correct voltage and frequency prior to energizing
the unit. Power to the bath passes through a filter to prevent switching spikes
from being transmitted to other equipment.
To turn on the bath press the control panel power switch to the ON position.
The stirring motor will turn on, the LED display will begin to show the bath
temperature, and the heater will turn on or off until the bath temperature
reaches the programmed set-point.