Davey RAINBANK WALL MOUNTED CABINET SYSTEM - Manual (Page 5)

5
How RAInBAnk ® woRkS
1. When there is demand for water from your toilet, washing machine or garden
tap, RainBank ® senses this demand and checks the level of water in the
rainwater tank.
Note: demand must be greater than 1.5 litres per minute or mains water
will be delivered.
2. If there is rainwater in the tank RainBank ® switches on the pump. The pressure
of the pump is sufficient to overcome the pressure of the mains water inside
RainBank® and this moves a plunger and allows the rainwater to flow.
Note: mains water pressure is not restricted.
3. When there is no longer a demand for water, RainBank ® detects that water has
ceased to move inside the pipes, switches off the pump and waits for another
water demand.
4. If RainBank ® senses a water demand and detects insufficient water in the
rainwater tank it will automatically allow the mains water to flow.
5. If there is a power failure during a demand for water, RainBank ® will
automatically supply the mains water as backup.
what are the advantages of RainBank ® over conventional air-gap systems?
• RainBank ® is totally hands off for your customer and needs no maintenance or
adjustment.
• RainBank ® is easy to install.
• RainBank ® does not require mains water to be re-pressurised and therefore
saves energy.
• RainBank ® is WaterMark approved – this means plumbing inspections will be
approved & your plumbers insurance should cover installation faults.
• RainBank ® will provide mains water as backup when:
- there is no rainwater
- there is no electricity to run pump
- the pump has been removed for servicing. Air-gap systems rely on pumps to
pressurise all water and do not function without them.