Cannon Instrument CT-2000 (Contant Temperature Bath) - Manual (Page 16)

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CANNON ® CT-2000 Constant Temperature Bath
Revision 1.0g—February, 2012; CANNON ® Instrument Company
2139 High Tech Road • State College, PA 16803 • USA
TEMPERATURE
Actual Target
20.003 C 100.000 C
HEATING
To Cold Start the CT-2000, toggle the power BATH switch up. The
POWER lamp should light when bath power has been activated. The
five LED’s in the lower row of keys will blink on and then off, and the
instrument will emit a short “beep” tone.
Bath lighting
To activate Bath Unit fluorescent lights, toggle the LIGHTS switch up.
The switch lamp indicator will light when power is supplied to the
fluorescent lights.
Warm Start
The Warm Start is the abnormal start-up mode for the bath and it occurs
only if the power was previously off for a period less than about two
seconds, or if a fault was detected in the microprocessor during the self-
test sequence (see below). If the CT-2000 Process Function Monitor
senses a momentary or ongoing failure in the system hardware or
software, the heating elements will be shut down and the system will be
reactivated in Warm Start mode. The keypad lights will flash in a repeat-
ing pattern and the heater power will be disabled (heating LED will not
light).
The display will show the following:
POWER UP
Warm Start
Consult User’s Guide
If this condition is ever discovered, the BATH power switch should be
turned off. After waiting at least five seconds, turn the BATH power
switch to the ON position and wait for the display to indicate either a
warm or cold start again. If the bath comes up in a cold start condition
and starts its normal self-test sequence, it is possible that a momentary
power interruption caused the warm start condition and no further action
is required. If the bath continues to enter the warm start condition, the
user should consult CANNON
® Instrument Company for further assis-
tance.
Self-test sequence
The CT-2000 start-up includes a self-test procedure encompassing key
components of the system. These tests, which will be displayed on the
LCD during start-up, are described in the following table: