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12.0 Principals of operation
Normal operation
In normal operation, the power bypasses the unit which acts as a junction box, and this then feeds the pumps
directly. Pump supply #1 (primary) also charges the battery.
Backup operation
When the unit senses that the power is down, the unit enters backup mode. To save power, the battery backup
will periodically and dynamically test if the pump/s need power (float up) using a system called DyPol (from
10-180 seconds depending on how often the pumps are cycling). If the pump/s need power, it will serve the
pump requesting power for as long as needed 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 backup 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 any power failure, the battery is always charged. The battery is also charged and topped up every 21 days.
This process can take up to 5 hours for a PowerMaxx2 to fully charge an empty battery.
13.0 Battery life & servicing
The battery has a nominal life span of 3 years and is displayed on the unit with a bL+%. This life span is
shortened over time and also by the following:
•
Temperatures above 25°C.
•
The number of discharges (the number of times the unit has been used without mains power).
•
The depletion level when discharging and the number of times the batteries are used. Extended periods
providing backup power will impact battery life.
Replacement of the battery pack should be done every 2-3 years to ensure the maximum backup time. In some
cases, the battery may need earlier replacement. This will be indicated by an S2 on the PowerMaxx2.
Servicing of the battery pack should be performed by a qualified service person with knowledge about batteries
and the required precautions. The battery pack should be replaced with the same type the unit is installed with.
This information can be found within the unit or on page 5.
Do not dispose of batteries in landfill. Please recycle safely at your local recycling plant.
Do not open or damage batteries. Released electrolyte is harmful to the skin and eyes and may be toxic.
•
To reset the S2, see section 21.0 - U6.
Please note, the battery service reset should only be performed by qualified personnel and only when the battery
has been changed. It is the owner's responsibility to ensure the battery is replaced when required. If the battery
is not change when needed, the unit will not be able to backup the pumps according to the specification and in
some instances, not at all.
Do not dispose of batteries in a fire. The batteries may explode.
WARNING!
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