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5.15
Dry running protection:
The controllers are equipped with two methods of dry running protection:-
1) The system pressure is monitored by the controller, if the system pressure
drops below a pre-set level (SP07) for longer than a pre-set time (AP05) the
pumps will be stopped.
2) If an external float or level switch is to be connected to the controllers (see
Page 14, Fig. 8) the controller will stop the pumps when the switch is
activated, when the switch is re-set by the rising water level, the pumps will
re-start automatically after a pre-set time delay (AP19)
For entering the programming mode see 5.24.
5.16
Parameters:
On the controller the following information is displayed:
- Pump status
- Programming
- Alarms
5.17
Pump status:
The following controller operating conditions can be displayed:-
1) Frequency of the electrical supply to the pump (this will be different on each
controller, between 30 & 50 Hz)
2) System pressure in bar
3) Current drawn (amps) by the pump that is connected to the controller (this
will be different on each controller)
Starting from the basic display by pushing of the directional arrow
(plus) or
(minus) these parameters are displayed for example:
Fig. 10
