Aqpure System With Ups - Grundfos AQpure Installation And Operating Instructions Manual

Power failure
A power failure can happen in both solar runtime and external
power runtime. In case of solar runtime, power failure can happen
due to the following reasons:
• Batteries have been discharged one time (low-battery signal
active) and external power is not available.
• Batteries have been discharged one time (low-battery signal
active), external power is available and production on external
power is disabled.
• Batteries have been discharged twice in a day and external
power is not available.
• Batteries have been discharged twice in a day, external power
is available and production on external power is disabled.
In case of external power runtime, power failure can happen due
to the following reasons:
• External power is not available and batteries have been
discharged twice in a day.
• External power is not available and batteries have been
discharged one time (low-battery signal active).
• External power is not available and external power has been
lost twice in external power runtime.
• External power is available, external power has been lost
twice in external power runtime and production on external
power is disabled.
As soon as there is a power failure, the system tries to go into idle
mode.
If the currently active tasks are either Production,
external tank or Tapping UV light, the system executes the
following steps:
1. The currently active tasks are halted. The system blocks the
activation of any other task.
2. All pumps are stopped.
3. All solenoid valves are closed.
4. All motor valves are closed.
5. The UV controller is switched off.
6. The system remains in idle state, until the conditions to run
the halted tasks are met again.
– In idle state, all electrical devices are in ON state. The
power backup is provided by the batteries. If the system
remains in idle state for a longer period, the voltage of the
batteries becomes critically low. At critically low voltage of
batteries, the bi-directional inverter is tripped and all
electrical devices go into OFF state.
If the currently active task is either
prefilter, Backwash of GAC filter,
Internal CIP, the system executes the following steps:
1. The system completes the active task. The system blocks the
activation of any other task.
2. Once the active task is completed, all pumps are stopped.
3. All solenoid valves are closed.
4. All motor valves are closed.
5. The UV controller is switched off.
6. The system remains in idle state, until the conditions to run
task Production are met again.
– In idle state, all electrical devices are in ON state. The
power backup is provided by the batteries. If the system
remains in idle state for a longer period, the voltage of the
batteries becomes critically low. At critically low voltage of
batteries, the bi-directional inverter is tripped and all
electrical devices go into OFF state.
Filling of the
Backwash of self-cleaning
Backwash of UF membrane or

6.7.2 AQpure system with UPS

P2
Fig. 11 AQpure system with UPS
Pos. Description
P2 External AC power supply UPS1 UPS
+A2 Control cabinet
The external AC power supply (P2) is connected to the control
cabinet (+A2). The control cabinet (+A2) is connected to the UPS
(UPS1). The UPS is charged by the external AC power supply
coming from control cabinet (+A2).
The capacity of the UPS is 800 VA. Depending on the state of
charge, the UPS provides 170 VAC to 230 VAC to the control
cabinet. This voltage is used to provide power to the 24 VDC
power supply device, IO 351b (Genibus pump control module)
and the 12 VDC adaptor of the multiport valve for the GAC filter
module.
Systems with UPS only produce water while the external AC
power supply (P2) is available. If the external AC power supply is
interrupted, the system stops all tasks instantly and closes all
motor valves, using the power supplied by the UPS. The PLC
stays in idle state. When the external AC power supply is
available again, the system starts automatically.
Power failure
In systems with UPS a power failure happens, if external power is
not available.
As soon as there is a power failure, the system executes the
following steps:
1. No matter which task is active, the system halts the active
task(s) and blocks the activation of any other task.
2. All pumps are stopped.
3. All solenoid valves are closed.
4. All motor valves are closed.
5. The UV controller is switched off.
6. The system remains in idle state, until the conditions to run
the halted tasks are met again.
In idle state, only PLC, GAC multiport valve and IO 351b stay in
ON state. All other electrical devices are in OFF state. The power
backup is provided by the UPS. If the system remains in idle state
for a longer period, the UPS power becomes critically low. At
critically low power, the UPS is tripped and PLC, GAC multiport
valve and IO 351b go into OFF state.
AQpure
+A2
UPS1
Pos. Description
25