Sterlco M2B+ Controller - Manual (Page 34)

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Flow Alarm
This alarm is used to monitor the flow rate input from either a pulse or analog style flow
meter. Once the Flow Monitor is turned on (in the Secure Menu; Flow Monitor = PUL or
CUR) either a low flow alarm or high flow alarm or both can be set up.
Use the following procedure to set up the Flow Alarm:
1. Press the Index button one time to access the Primary menu.
2. Press the Enter button.
3. Press the Index button until the display reads “Flow Alarm Low.”
4. Press the Enter button.
5. Use the Up and Down buttons to adjust the value of the alarm.
6. Press the Enter button to accept the value.
7. Press the Index button until the display reads “Flow Alarm High.”
8. Press the Enter button.
9. Use the Up and Down buttons to adjust the value of the alarm.
10. Press the Enter button to accept the value.
11. Press the Alarm Silence button to return to Running mode.
Open Sensor
This alarm occurs when the controller loses the signal from the To Process (process display
999), From Process (return display 999), or Remote probes (mold display 999). This alarm is
critical. The pump will remain operating and cooling is enabled. Turn the controller off,
correct the condition and start the controller to clear the fault. There are no menu items that
affect this function.
Low Pressure
This alarm occurs when the controller loses the signal from the pressure switch. In water
units, this alarm immediately disables the pump motor, heat, and cool outputs. In the water
unit, this alarm is not critical and will automatically reset the controller once the pressure
signal is regained.
In water units with manual fill reservoir tanks, the pressure switch input can be bypassed
during initial start-up with an adjustable timer located in the Secure menu. This time period
should be kept as short as possible to prevent damage to the pump seal.
In oil units, during the Auto Mode, the loss of the pressure switch disables the heater output
and the pump motor output will remain on for a preset time period (Pressure Timer = OFF,
2sec, 5sec, 30sec, or 1 to 10 minutes).
Use the following procedure to change the Pressure Timer for oil TCUs:
1. Press the Index button three times to access the Secure menu.
2. Press the Enter button.
3. Press the Index button until the display reads “Pressure Timer.”
4. Press the Enter button.
5. Use the Up and Down buttons to adjust the value of the timer.
6. Press the Enter button to accept the change.
7. Press the Alarm Silence button to return to Running mode.