INSTALLATION
INSTRUCTIONS
Evolution MkII
with
• INSTALLATION
• OPERATION
• TROUBLE SHOOTING
ATS 5200.477 Lic WMKA 22042
Davey commenced in 1934 and today, as Davey Water Products, manufactures and distributes a comprehensive range of products for transfer, conservation, treatment and filtration of water.
Davey has a dominant market share in Australia and exports to more than 60 separate countries, servicing some of the toughest environmental and climatic conditions on the globe.
Davey has maintained its commitment to research and development, resulting in innovative new products servicing specific and emerging market opportunities. Many of these products have received multiple awards for innovation and excellence which have led to our induction into the Manufacturing
Hall of Fame in Victoria.
Davey maintains leadership in quality with an environmental focus by holding ISO 9001 certification and ISO 14001 environmental standard.
Davey is today a wholly owned subsidiary of GUD, a ‘Top 200’ Australian public company whose shares are listed on the Australian Stock Exchange.
Now more than ever “Depend on Davey” reflects a business culture of dependable, innovative water solutions when and where you need them, supported by the best service and advice.
2
CONTENTS
About RainBank . The easy way to save water. 4
Components 5
How RainBank works
Before you start
6
7
Installation instruction
How to install RainBank
Testing 11
Back Flow Prevention Requirements 12
8
9
Installation of Submersible Pumps and Priming
Maintaining RainBank
13
14
Trouble shooting RainBank 15
Warnings 17
Plumbers Tips
Davey Guarantee
Contact Details
18
19
20
3
ABOUT RAINBANK.
THE EASY WAY TO SAVE WATER
Congratulations on your purchase of a high quality Australian made Davey
RainBank automatic water controller.
RainBank is patented and has been fitted to thousands of Australian homes.
• RainBank allows you to use water
from your rainwater tank for your
toilet, washing machine or garden
whenever there is water in the tank.
Your actual savings depend on your roof catchment area, rainfall and the size of your tank.
RainBank may allow you to claim tank rebates (when installed on existing homes). Check with your local water authority.
RainBank is energy efficient and cheap to run.
• If the tank water is exhausted
RainBank automatically and
seamlessly switches you over to
mains water.
Because RainBank only works when it is needed it uses very little energy.
• RainBank has an in-built “dual
check valve” for low hazard back
flow prevention.
The daily power used to run a RainBank and pump system supplying two toilets in a three person dwelling is equivalent to:
• A reverse cycle air conditioner for
3 minutes RainBank can save up to 40% of your home’s usage of mains water, which could be up to 100,000 litres of water a year.
• A clothes dryer for 3 minutes
• A washing machine for 10 minutes
• A TV or PC for 30 minutes
4
4 m
5 m 5 m
100,000 Litres
COMPONENTS
Outer Cover
RainBank
Outlet isolation valve
Inlet/outlet connections
Mains isolation valve
Dual check valve
Primary filter chamber
Secondary filter chamber
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.
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.
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.
• 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.
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.
• 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.
5. If there is a power failure during a
demand for water RainBank will
automatically supply the mains
water as backup.
6
BEFORE YOU START
!
IMPORTANT:
• If you are in doubt about any aspect
of your RainBank kit’s suitability,
check with your Davey Dealer. For
help in locating your closet dealer
call the appropriate Davey Customer
Service Centre listed on the back of
this booklet.
• RainBank is designed to handle
clean rainwater and mains water. It
should not be used to interconnect as
part of a bore water, dam water,
grey water, stormwater or recycled
water system.
Other things we recommend to maximise the performance and serviceability of your RainBank.
• Clean filters inside cabinet regularly.
• While RainBank does have an in-built
DUAL CHECK back flow prevention valve, some water authorities require an additional external back flow valve to be plumbed into the mains water delivery line, to prevent any possible contamination of mains water by rainwater, particularly if the tank is partially or fully submerged.
Check with your local water authority for their plumbing guidelines on rainwater tanks.
• Fit a first flush system if possible to
divert the initial run of water from the
roof that may contain dirt and
pollutants.
• Fit a strainer to the top of your tank
inlet to stop leaves entering the
system.
• Use at least 20mm or 3 ⁄4 inch
plumbing to and from RainBank to
reduce the effect of pipe friction.
Galvanised pipe not recommended.
7
8
INSTALLATION INSTRUCTIONS
Things you should be aware of:
• Before installing RainBank please
read all instructions carefully as
failures caused by incorrect
installation are not covered under
warranty.
• Mains electrical connections and checks must be made by a qualified electrician and comply with applicable local standards. The 12 volt connections need not be carried out by a qualified electrician, but should be done in compliance with applicable standards.
• The pumping of abrasive materials
will damage the system and void the
warranty.
• Some insects such as small ants find
electrical devices attractive for
various reasons. If your controller or
pump is susceptible to insect
infestation you should implement a
suitable pest control plan.
• In accordance with AS/NZS
60335.2.41 we are obliged to inform you that this controller and any pump controlled by it is not to be used by children or infirm persons and must not be used as a toy by children.
• Limit mains water pressure to
900kPa.
• Davey recommends a 2mm hole in the pipe work just above the pump outlet to clear air from the pipe work.
• All pipe work and fittings should be
labelled in accordance with local standards such as Australian
Standard AS/NZS 3500. This standard requires that all pipework containing
rainwater is marked with green
‘rainwater’ tape or stickers at 1
meter intervals and every outlet that
may deliver rainwater is to be
permanently signed with ‘Rain Water’ signage or a green tap marked ‘RW’.
NOTE: Please be advised that a disconnection incorporated in the fixed wiring is to be provided.
HOW TO INSTALL RAINBANK
3. Cut pump stand pipe so that pipe end is approximately 50mm from tank top in installed position.
1. Run mains water plumbing, rainwater plumbing and power supply through external wall according to the following dimensions.
200 CL
SPACING
80
4. Connect a cable or chain to the submersible pump – so that it can be lowered into the rainwater tank – important – handling the pump by straining the power lead will damage the pumps water seals and cause premature failure not covered by warranty.
5. Connect PVC (DN25) to the pump outlet and lower assembly into the rainwater tank. Cable tie pump power lead to the pipework.
PVC pipe
Cable tie
Handle
2mm hole
Pump
Float switch
2. Cut ø365-375 hole in tank top. Ensure that the hole position coincides with a clear area for pump to reside on tank floor. Pump should be placed in a position on tank floor which has adequate dimensions so as not to restrict the movement of the float switch.
9
6. Cable tie power lead from pump to pipework and bundle excess cable to base of the Evolution MkII.
7. Arrange pump so that stand pipe aligns with Evolution MkII inlet at base of primary filter chamber.
12. Connect Mains and outlet plumbing to Evolution MkII ensuring correct orientation. If plumbing fit out is incorrect, the use of flexible hoses is suggested to connect to the
Evolution MkII.
13. Open Mains water valve and check for leaks.
8. Remove primary filter lid and filter from the Evolution MkII housing to expose four Phillips head screws in chamber base.
14. Switch on power to RainBank and check for flashing green light – light will flash ten times as it boots up.
15. Open a tap downstream of RainBank to clear lines of air and check for leaks. Requires a flow rate of at least
10 litres in 1 minute to expel air.
pipe clamp screws
16. Press manual override button on top of RainBank to start pump and flush air from rainwater lines. There must be rainwater inside the tank – this is an important part of commissioning the system.
9. Fasten Evolution MkII to tank top using self drilling sheet metal screws using the 7 locations provided.
17. Close tap and check for leaks.
10. Fasten the four screws in the base of the primary chamber in order to clamp stand pipe in position. Ensure screws are tight by repeating the tightening pattern.
11. Reinstall the primary filter and lid.
10
TESTING
IMPORTANT: TO PROTECT AGAINST ELECTRICAL SURGES AND LIGHTENING STRIKE
DAMAGING RAINBANK OR ITS PUMP WE STRONGLY RECOMMEND THE USE OF A SUIT-
ABLE SURGE PROTECTION DEVICE AND RESIDUAL CURRENT DEVICES.
Test the operation of RainBank.
1. With the mains connected and the
rainwater tank empty turn on one
of the taps in the laundry that feed
the washing machine or flush the
toilet. Mains water should flow
normally. The pump should not turn
on. When this is completed turn off tap.
NOTE: Mains water indicator light is not applicable on this model.
2. Fill the rainwater tank with sufficient
water to activate or cover the pump.
3. Check that the pump is correctly
primed and there are no air locks that
will interfere with its operation. This is
essential for the proper operation of
the unit. See the instructions on how
to do this in the Priming section on
page 13.
4. Turn on a tap or flush a toilet in
the rainwater system. The pump
should run and deliver rainwater.
Allow to run for several minutes to
clear air from pipes. The ‘status’ light will now glow ‘green’ .
5. Check for leaks around RainBank, the
pump, pipework and fittings.
11
BACK FLOW PREVENTION
REQUIREMENTS
IMPORTANT
• Under Australian Standard 3500
collecting/storing rainwater in a
buried tank is considered a medium
level hazard. Even though RainBank
has a built-in dual check back flow
valve, you may be required to fit
additional backflow protection valves
to satisfy this requirement – check
with your local council as to their
guidelines on rainwater tank
installation and backflow prevention.
There is no need for a separate float
switch as this comes attached to the
submersible pump and does not plug
into the RainBank unit.
12
INSTALLATION OF
SUBMERSIBLE PUMPS
PVC pipe
Cable tie
Handle
2mm hole
Pump
Float switch
PRIMING PUMPS
Submersible pumps inside tank.
Provided the pump is sitting in sufficient water the pump will self prime and push air out of the taps and appliances that are used at the other end. To let this air out without causing damage it is important that:
• All taps connected to the rainwater
system are turned on
• Toilets connected to the system are
flushed so the cistern fills and any air
is cleared from the line.
1. Use Teflon tape on the pipe
to pump connection.
2. Secure the power cable to the
delivery pipe with cable ties.
3. Place pump into tank.
4. Davey recommends the fitting of
floating inlets to submersible pumps
to minimise any possibility of sludge
intake. Part number to suit pump
D42A/B is FI-42.
!
IMPORTANT
Do not pull on power lead. Fit a rope to handle for lowering and raising pump.
13
MAINTAINING RAINBANK
RainBank does not need maintenance but there are things you can do to ensure its most reliable operation.
• Fit a “first flush” system that ensures
the first run of dirty rainwater does
not go into the tank.
This automatic thermal overload
switch can start the pump without
warning. Always disconnect the
controller and/or pump motor
from the electrical supply before
maintenance or repairs.
• Clean your gutters and first flush
devices and ‘Y’ strainers regularly.
• Remove branches that over hang
your roof.
• Have a strainer fitted to your
rainwater tank inlet and regularly
check this for leaves and twigs, etc.
• Care should also be taken when
servicing or disassembling pump to
avoid injury from hot pressurised
water. Unplug the pump, relieve
the pressure by opening a tap on the
discharge side of the pump and allow
any hot water to cool before
attempting to dismantle.
• You should also check for debris in
the bottom of your tank a few times a
year and clean this out if necessary.
A first flush system will greatly reduce
the need for this action.
• Do not use petroleum based fluids
or solvents (e.g. oils, kerosene,
turpentine, thinners, etc. on the
plastic or seal components).
• Do not use hydrocarbon based or
propelled sprays around the electrical
components of the controller.
!
IMPORTANT MAINTENANCE
PRECAUTIONS
• Davey pump motors are fitted with an
automatic thermal overload switch
that stops the motor if the motor
gets too hot to avoid damaging it.
This automatically re-starts the motor
when the temperature within the
pump has dropped to a safe level.
Constant tripping of this switch
indicates a problem e.g. Low voltage
at pump, etc.
• During servicing use only approved
non petrochemical based o-ring and
gasket lubrication. If unsure consult
your Davey Dealer for advice.
14
TROUBLE SHOOTING
RAINBANK
SYMPTOM: PUMP WILL NOT SWITCH OFF
1. Water is still being used.
Check all taps, toilets and appliances
connected to RainBank system to
ensure they are turned off.
2. Water is leaking on discharge
side of RainBank system.
Check for leaks and repair.
SYMPTOM: PUMP WILL NOT SWITCH ON
1. No power supply to pump.
Contact electrician and have power
restored.
2. No water in tank.
Check water level in tank.
3. Mains water supply not
connected to RainBank.
RainBank system must have a
pressurised water supply connected
to inlet. Press ‘manual override’
button to simulate mains water
flowing.
4. Mains supply to RainBank
turned off.
Turn on mains water
supply. Press ‘manual override’
button to simulate mains water
flowing. Pump will start if rain water
is available.
5. Mains water flow is too low.
Ensure flow at most distant outlet is
above 5 litres per minute.
15
Mains water is still in use when pump is running.
Possible cause - pump needs to be primed.
Mains water is still in use when pump is running.
Possible cause
- debris is caught inside RainBank preventing plunger mechanism from sealing completely.
Mains water is still in use when pump is running.
Possible cause - pump impeller blocked. Have pump serviced.
Mains water not passing through
RainBank.
Possible cause - RainBank installed backwards. Install RainBank according to installation & operating instructions. Arrow on top of RainBank indicates direction of flow.
Mains water not passing through
RainBank.
Possible cause - debris is blocking inlet and or filters in or out of
RainBank.
In order of most likely solution:
1. Mains inlet stop valve closed
– open stop valve.
2. RainBank blocked – this is highly unlikely, ensure 1 is checked first.
OTHER SYMPTOMS:
Mains water pressure and flow too low.
Possible cause - there is a check valve or PRV installed between RainBank and tank. Remove check valve or PRV from plumbing.
Pump hums.
Possible cause - pump is jammed or seized. Have pump serviced.
Water leaking from connection between pump and RainBank.
Possible cause - installer has failed to fit connection kit correctly. Remove
RainBank and re-install connection kit.
Mains water filling up tank.
Possible cause - debris caught inside RainBank.
Pump takes more than 10 seconds to turn on.
This is anti-cycling software that allows 1 start every 10 seconds.
16
WARNINGS
• Before installing your RainBank controller, please read all instructions carefully as failures caused by incorrect installation or operation are not covered by the guarantee. Your
RainBank controller is designed to handle clean water. The system should not be used for any other purpose without specific referral to
Davey. The use of the system to pump flammable, corrosive and other materials of a hazardous nature is specifically excluded.
• Secure all openings to the rainwater tank to ensure it will not permit access to children.
• If the supply cord is damaged, it must be replaced by manufacturer, its service agent or similarly qualified persons in order to avoid a hazard.
• WARNING: Water freezing inside the RainBank will damage the unit.
Locate your RainBank and pump so that they are not susceptible to freezing.
• RainBank must be installed and serviced by a licensed plumber.
• Check with your local water authority on water restrictions when your rainwater tank is connected to mains water.
• Do not enter a empty rainwater tank - they may contain hazardous gases.
17
PLUMBERS TIPS
1. Fit first flush devices to all down pipes to ensure clean water inside the tank
(dirty tank water can stain toilets and clothes).
2. Clear swarf from all pipes and holes drilled into the tank (swarf can block valves,
RainBank and toilet valves).
3. Check with local council plumbing teams for backflow requirements.
4. Keep pipe work well braced as vibrations can become noisy.
5. Fill rainwater tank above float switch with garden hose to check system.
6. Make sure pump is full of water (primed) before leaving site. Flush all air out of system by running pump with an outlet downstream open.
18
DAVEY GUARANTEE
Davey Repair or Replacement Guarantee
In the unlikely event in Australia or New Zealand that this Davey product develops any malfunction within warranty periods beginning from the date of original purchase due to faulty materials or manufacture, Davey will at our option repair or replace it for you free of charge, subject to the conditions below.
Davey Guarantee Period
Rainbank - Three Years
Should you experience any difficulties with your Davey product, we suggest in the first instance that you contact the Davey Dealer from which you purchased the Davey product. Alternatively you can phone our Customer Service line on 1300 367 866 in Australia, or 0800 654 333 in New Zealand, or send a written letter to Davey at the address listed below. On receipt of your claim, Davey will seek to resolve your difficulties or, if the product is faulty or defective, advise you on how to have your Davey product repaired, obtain a replacement or a refund.
Your Davey Guarantee naturally does not cover normal wear or tear, replacement of product consumables (i.e. mechanical seals, bearings or capacitors), loss or damage resulting from misuse or negligent handling, improper use for which the product was not designed or advertised, failure to properly follow the provided installation and operating instructions, failure to carry out maintenance, corrosive or abrasive water or other liquid, lightning or high voltage spikes, or unauthorized persons attempting repairs. Where applicable, your Davey product must only be connected to the voltage shown on the nameplate.
Your Davey Guarantee does not cover freight or any other costs incurred in making a claim. Please retain your receipt as proof of purchase; you MUST provide evidence of the date of original purchase when claiming under the Davey Guarantee.
Davey shall not be liable for any loss of profits or any consequential, indirect or special loss, damage or injury of any kind whatsoever arising directly or indirectly from Davey products. This limitation does not apply to any liability of Davey for failure to comply with a consumer guarantee applicable to your Davey product under the Australian or New Zealand legislation and does not affect any rights or remedies that may be available to you under the Australian or New Zealand Consumer Legislation.
In Australia, you are entitled to a replacement or refund for a major failure and for compensation for any other reasonably foreseeable loss or damage. You are also entitled to have the goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure.
Should your Davey product require repair or service after the guarantee period; contact your nearest
Davey Dealer or phone the Davey Customer Service Centre on the number listed on following page.
For a complete list of Davey Dealers visit our website (davey.com.au) or call.
19
AUSTRALIA
Davey Support Centre
6 Lakeview Drive,
Scoresby, Australia 3179
Ph:
Fax:
1300 367 866
1300 369 119
Website: davey.com.au
NEW ZEALAND
Davey Support Centre
7 Rockridge Avenue,
Penrose, Auckland 1061
Ph: 0800 654 333
Fax: 09 527 7654
Website: daveynz.co.nz
Davey Water Products Pty Ltd
Member of the GUD Group
ABN 18 066 327 517
® Davey and RainBank are registered trade marks of Davey Water Products Pty Ltd.
© Davey Water Products Pty Ltd 2016.
P/N 402032-4
* Installation and operating instructions are included with the product when purchased new.
They may also be found on our website.
