Telemark Cryogenics 1200 Instruction Manual page 40

Telemark Cryogenics Microprocessor Based Cryochillers
The use of ""cal2309"" page allows the user to change certain parameters to
suite the user requirements, such as the defrost termination temperature.
Note: After entering and commend the user will need to
re enter ""cal2309"" to change another user set-point of
required.
2.9.4.1 Changing Defrost Termination Temperature
Type "dt" return. You will be asked to input a value followed by "enter"
Note a lower temperature can dramatically shorten the overall cycle
time.
2.9.4.2 Changing Liquid Line Shutdown Temperature
2.9.4.3 Changing the logging Interval
Type "li" return when in the "Calibrate Active" mode and you will be
prompted to enter a logging interval between 1 and 1000 seconds.
Logging only occurs when the unit is in "verbose" mode.
2.9.4.4 Changing the Set-point Relay 1
There are three possible parameters against which the system ready
signal can be produced;
Compressor running (cr) output given when the compressor is running.
Coil out (co) useful if a particular partial pressure of water needs to be
reached before processing starts.
Cold Temp (ct). Activates if the coldest temperature is outside of
normal operating limits.
NOTE – When in the "Calibrate Active" if the correct modes are
selected you will then be prompted to input the temperature of the
set point.
2.9.4.5 Changing the Set-point Relay 2
There are three possible parameters against which the system ready
signal can be produced;
Compressor #2 running (cr2) output given when the compressor is
running. Note this function is not usable on unit with only a single
compressor.
. Coil in (ci) useful if a particular ci temp has to be reached before the
process starts.
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Revision 1.0.7 October 2018