Revision C – January 2023
CDS2000 Page | 23
PumpSettings‐Temperature
Pump Cooldown Mode allows the user to either disable
the pump cooldown feature or choose between the
Product Sensor or Pump Housing Sensor to determine
when the pump is enabled.
Pump Relay Contacts allow the user to choose between
normally open or closed relay contacts; determining what
contacts to use is based on system configuration. For
example, if it is desirable to have the pump operate under
power-off conditions, choose the Normally Closed
contacts.
In addition, if it is desirable to have the pump
operate once specific conditions have been met, then
Normally Open contacts would be used.
Pump Cooldown Mode – Product Sensor allows the user
to utilize the Product Sensor (inline RTD – resistance
temperature device) as the instrument that ultimately
determines when the pump will be enabled. When
selecting the Product Sensor, one will also need to
program the Temperature to Enable Timer setting along
with the duration of the timer in the Pump Cooldown Time.
Once the inline Product Sensor (RTD) achieves the
temperature within Temperature to Enable Timer, the
pump cooldown timer will countdown beginning with the
minutes programmed in Pump Cooldown Time and
ending with 00:00. Once the timer reaches 00:00, the
pump will then be enabled through the PCO cable.
Default Temperature to Enable Timer is -100C or -150F.
Pump Cooldown Mode – Pump Housing Sensor allows
the user to utilize the Pump Housing, flange-bolt mounted
sensor as the instrument that ultimately determines when
the pump will be enabled. When selecting the Pump
Housing sensor, the Temperature to Enable Pump feature
will automatically populate. Temperature to Enable Pump
is the temperature at which the pump will be enabled
when using the Pump Housing Sensor feature. Default
Setting is -100C or -150F. The Pump Housing sensor
does NOT utilize a timer. Rather, the pump housing
temperature is relayed from the pump housing, flange
bolted RTD, and if the recorded temperature is colder
than the temperature programmed in the Temperature to Enable Pump setting, the pump will be
enabled through the PCO cable.
Please Note: In the event of an intermittent non-fatal temperature error, the Intermittent
Temperature Tolerance Time (page 18) is activated. This programmable timer specifies a time
during which a temperature fault is allowed to exist without disabling the delivery pump. During
this failure a thermometer icon with an upward pointing arrow and countdown timer will appear in
the Operating Display indicating the number of seconds remaining before the temperature fault
will disable the delivery pump unless corrected. Failure to correct the temperature fault within the
specified time will cause the pump icon to be displayed, disable the delivery pump, and reset the
Pump Cooldown Timer to the programmed value. When the fault is corrected and the
temperature returns within range, the Pump Cooldown Timer will decrement toward zero. If no
further temperature error(s) occur, the Pump Cooldown Timer will reach zero, the pump icon will
disappear, and the delivery pump will be enabled.
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