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7
Control Description
(Cont’d)
Manual Voltage Control (Item K)
Used to manually adjust the voltage output to the heater/cooler device.The
associated GREEN LED is on when the INTERNAL/EXTERNAL SELECT
CONTROL (Item J) is set to
internal
, and the COOLING MODE SWITCH
(Item C) is set to
manual
. Set value can be read from the METER (Item B)
in the
output volts
position.
Peltier Limit LED (Item L)
This option functions only when the
CL-100
is used with an
SC-20
Dual
In-line Solution Heater/Cooler.The RED LED is
lit
when the temperature of
the Peltier device within the
SC-20
exceeds its operational limits.
Activation of this circuit automatically sets the output voltage of the
CL-
100
to
0 V
.
Freeze Alert LED (Item M)
This option functions only when the
CL-100
is used with an
SC-20
Dual In-
line Solution Heater/Cooler. The BLUE LED is
lit
when the Peltier device
within the
CL-100
approaches 0°C.Activation of this circuit is informative
only and will not alter any instrument setting.
Heat / Cool LED’s (Item N)
RED and BLUE LED’s indicate
heating
or
cooling
power applied to the
Peltier device.
Publication 5702-001-REV-A
