Koehler K87170, Operation And Instruction Manual

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Condenser Temperature is the temperature of the condenser and receiver. It
should be set to at least 30 ºC below the lowest vapor temperature to be
observed in the test. A suitable condenser temperature for most distillations is
60 ºC.
Vacuum KP is a proportional control constant for the vacuum control. If you
are having problems with vacuum control contact your local representative for
advice.
Vacuum KI is an integral control constant for the vacuum control. If you are
having problems with distillation rate control contact your local representative
for advice.
Pressure Step Down Rate: This the rate at which pressur will be reduced
before the distillation begins. Pressure step down begins at 100 mmHg and is
reduced from there at the desired rate. Slow reduction in pressure helps to
prevent foaming by allowing the sample to slowly degas before the distillation
begins.
Distillation Rate KP is a proportional control constant for the distillation rate
control. If you are having problems with distillation rate control contact
Koehler Instrument or your local representative for advice.
Distillation Rate KI is an integral control constant for the distillation rate
control. It does not normally need to be changed. If you are having problems
with distillation rate control contact your local representative for advice.
Distillation Rate KD is a differential control constant for the distillation rate
control. If you are having problems with distillation rate control contact or
your local representative for advice.
Distillation PID Bias: This is the starting point for the distillation rate
control. Normally this value does not need to be changed. If you are having
problems with distillation rate control contact your local representative for
advice.
Control Mode shows the current status of the distillation. Control modes
include Initializing, Looking for IBP, Looking for volume %, Cooling Down
and Shutting Down.
Alarm shows any alarm condition.
Performing a Distillation 5-6