Low Temperature Limit (L-##)
This menu item serves as a user adjustable low temperature limit. It limits how low the temperature set point
may be set as well as lowest process fluid temperature at which the Chiller will operate. When this value is
exceeded, the appropriate alarm or fault message will appear on the display (see
Display, Fault and Error
Messages
).
To change the low temperature limit value, press the Up or Down arrow button until the desired low limit value
is displayed on the temperature display.
To accept the displayed value and return to the main operational display, either press the Set button or allow
the display to timeout (approximately 15-20 seconds). To accept the displayed value and advance to the next
menu item, press the Up and Down arrow buttons simultaneously.
Auto-Refrigeration Temperature (A ##)
This menu item allows you to select the temperature at which refrigeration is activated. When the set point
exceeds the auto-refrigeration temperature by more than 1.0°C, the cooling and the fan are turned off.
To change the auto-refrigeration temperature, press the Up or Down arrow button until the desired auto-
refrigeration temperature is displayed on the temperature display.
To accept the displayed value and return to the main operational display, either press the Set button or allow
the display to timeout (approximately 15-20 seconds). To accept the displayed value and advance to the next
menu item, press the Up and Down arrow buttons simultaneously.
CAUTION: This value is always displayed/set in °C.
Specific Heat (P.##)
This menu item allows you to adjust chiller performance to the specific heat of the cooling fluid, thus
optimizing temperature control. It should be set to 0.80 for a 50% glycol / 50% water solution (the specific
heat value for water is 1.00).
To change the specific heat setting, press the Up or Down arrow button until the desired low limit value is
displayed on the temperature display.
To accept the displayed value and return to the main operational display, either press the Set button or allow
the display to timeout (approximately 15-20 seconds). To accept the displayed value and advance to the next
menu item, press the Up and Down arrow buttons simultaneously.
Communications Baud Rate (PC##)
This menu item allows you to set the baud rate of the chiller to match the device to which it is connected. It is
functional only on Chillers equipped with the optional RS232 output.
To change the baud rate setting, press the Up or Down arrow button until the desired low limit value is
displayed on the temperature display.
To accept the displayed value and return to the main operational display, either press the Set button or allow
the display to timeout (approximately 15-20 seconds). To accept the displayed value and advance to the next
menu item, press the Up and Down arrow buttons simultaneously.
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