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PowerMaxx
10.0 Principles of operation
Normal operation
The power bypasses the PowerMaxx and goes direct to the pumps (see figure 4). Pump supply #1 (primary)
also charges the battery.
240V
240V
For Pump #1
For Pump #2
Charging
Battery Pack
Inverter
DC - 240VAC
Pump #1
Pump #2
Figure 4. Basic schematics
Backup operation
When the PowerMaxx senses that one or more of the power connections have failed it enters backup mode.
To save power it periodically (once a 1 minute) tests if the pump/s needs power (float up). If not, the
PowerMaxx rests for a further minute. However, if the pump/s needs power it will serve the pump/s as long
as they need or until the battery is depleted.
If two pumps are connected and both supplies have failed it will serve both pumps in a rotational manner
giving equal priority until the power returns or the battery is depleted.
If the secondary power has failed, it will serve the secondary pump as required from the battery. However it
will also charge the battery from the primary spur, when the secondary pump does not need power.
Charging after power failure
After a power failure, the battery is charged. This process can take up to 15 hours to reach a 95% capacity
for a completely depleted battery set.
For technical support, please call 01279 757400
9
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