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12.2
Alarms - Twin Pump Systems
The alarms are similar to those of single pump systems with the specific
particularities of operation with two controllers. Depending on the system’s
reaction there are 4 types of alarm:
1.
Communication Failure
No alarm is activated. Both devices continue operating independently.
2.
Lack of Water
If there is a lack of water alarm in a single pump system, the other one
assumes the role of “main device”, if there is an over-demand during
next working cycles, the system will try to restore the device in failure.
If the device is restored in these conditions then it will be also restored
the alternated working mode. If there is lack of water on both devices,
the system will activate the ART system in the MASTER unit.
3.
Minimal Tank Level
The alarm “LACK OF WATER” is activated and the device remains in
failure. It will be automatically restored when the level sensor detects
water again.
4.
Other Alarms
If the alarm has occurred in a single controller, the other will act as
“main device”. The system will try to restore the disabled device only in
case of over demand, after 4 successive attempts without success the
device is turned off, it should be restored manually. In case of alarms in
both devices the system performs 4 restore attempts, if it does not
succeed the system is disabled.
To manually restore a device disabled by an alarm push AUTOMATIC ON
/ OFF in MASTER device and then ENTER in the device with the alarm.
