Davey RainBank KRBCABS1/20 User manual

WMTS-477:2016 Lic WM-022042
Installation and
Operating Instructions
Please pass these instructions on to the operator of this equipment.
For any assistance or after sales service contact your Davey Dealer. For help in locating your closest
dealer contact your appropriate Davey Support Centre listed on the back of this booklet.

2
Davey commenced in 1934 and today, as Davey Water Products,
manufactures and distributes a comprehensive range of products for
transfer, conservation, treatment and ltration 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 specic 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 certication 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” reects a business culture of
dependable, innovative water solutions when and where you need them,
supported by the best service and advice.

3
CONTENTS
About RainBank. The easy way to save water.......................................................4
How RainBank works...............................................................................................5
Before you start........................................................................................................6
Installation tips .........................................................................................................7
Components..............................................................................................................8
Pump inside tank......................................................................................................9
How to install RainBank......................................................................................... 11
Testing .....................................................................................................................14
Maintaining RainBank............................................................................................15
Important maintenance precautions.....................................................................15
Trouble shooting RainBank...................................................................................16
Davey Guarantee ....................................................................................................19
Contact Details .......................................................................................................20

4
m5
m5
m4
100,000 Litres
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 tted 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.
• If the tank water is exhausted RainBank automatically and seamlessly
switches you over to mains water.
• RainBank has an in-built “dual check valve” for low hazard back
ow prevention.
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.
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.
In most areas of Australia, having a RainBank and using rainwater for your toilet and
washing machine allows you to claim tank rebates paid by state governments and
some councils.
RainBank is energy efcient and cheap to run.
Because RainBank only works when it is needed it uses very little energy.
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
• A clothes dryer for 3 minutes
• A washing machine for 10 minutes
• A TV or PC for 30 minutes

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 sufcient to overcome the pressure of the mains water inside
RainBank and this moves a plunger and allows the rainwater to ow.
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 insufcient water in the
rainwater tank it will automatically allow the mains water to ow.
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.

6
IMPORTANT:
• 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.
• Before installing RainBank please read all instructions carefully as failures
caused by incorrect installation are not covered under warranty.
• 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.
• The pumping of abrasive materials will damage the system and void the warranty.
• Mains electrical connections and checks must be made by a qualied
electrician and comply with applicable local standards. The 12 volt
connections need not be carried out by a qualied electrician, but should be
done in compliance with applicable standards.
• Secure all openings to the rainwater tank and make sure the wiring, plumbing
and the RainBank unit are protected from access by children and pets.
• Water freezing inside the RainBank will damage the unit. Locate your
RainBank and pump so that they are not susceptible to freezing.
• Some insects such as small ants nd electrical devices attractive for various
reasons. If your controller or pump is susceptible to insect infestation you
should implement a suitable pest control plan.
• Over time the relevant position of the home or RainBank and the rainwater
tank may change slightly. In order to reduce the stresses on pipework
such movement may result in, it is recommended that a length of exible
pipework from pump to RainBank be installed. This pipework can be a
braided hose or polythene pipe or similar.
• Limit mains water pressure to 600kPa max. (NOTE: Australian Building
Standards stipulate incoming mains pressure should not exceed 500kPa.)
• Under AS/NZS 3500.1 collecting/storing rainwater in a buried tank is
considered a medium level hazard. Even though RainBank has a built-in
dual check back ow valve, you may be required to t additional backow
protection valves to satisfy this requirement – check with your local council as
to their guidelines on rainwater tank installation and backow prevention.
!
BEFORE YOU START

7
INSTALLATION TIPS
Other things we recommend to maximise the performance and serviceability
of your RainBank.
• Install cabinet on a solid, well protected wall (this will reduce noise and pipe stress).
• Fit rst ush devices to all down pipes to ensure clean water inside the tank
(dirty tank water can stain toilets & clothes).
• Fit a strainer to the top of your tank inlet to stop leaves entering the system.
• Use at least 20mm or ¾ inch plumbing to and from RainBank to reduce the
effect of pipe friction. Galvanised pipe not recommended.
• Clear swarf from all pipes and holes drilled into the tank (swarf can block valves,
RainBank and toilet valves).
• Check with local council plumbing teams for backow requirements.
• Keep pipe work well braced as vibrations can become noisy.
• Fill rainwater tank above oat switch with garden hose to check system.
• 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.
• Advise the customer to clean lters inside cabinet regularly.
• All pipe work and ttings should be labelled in accordance with local
standards such as Australian Standard AS/NZS 3500.1. 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’.
• 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
inrm persons and must not be used as a toy by children.
• Davey recommends a 2mm hole in the pipe work just above the pump outlet
to clear air from the pipe work.
• There is no need for a separate oat switch as this comes attached to the
submersible pump and does not plug into the RainBank unit.

8
COMPONENTS
Dual check valve
RainBank Mounting Bracket
Mains water inlet
RainBank 10” Filter Housing
Rainwater inlet
Outlet to toilets and laundry
Y strainer (rainwater)
Stop valve

9
In-tank Option
Mains water supply
900kPa Maximum
1
3/4” BSP Male thread
2
3/4” BSP Male thread
3
Pump Power lead
4
RainBank Power lead
5
Stop valve
Warning:
Do not reconnect with
mains water supply
Important:
All pipework and outlet
fittings from RainBank must
be labelled to AS/NZS 3500.1
6
Float switch
7
Manual start button
8
Rainwater supply via pump
9
PUMP INSIDE TANK Option - Overall
MODEL NO. KRBCABS1/20 &
KRBCABS2/20

10
PUMP INSIDE TANK Option - Close up
TO TOILETS
AND/OR
LAUNDRY
(do not mix/cross-connect
with mains water supply)
MAINS
WATER SUPPLY
3/4" BSP
male thread
Manual start
button
RAINWATER SUPPLY
from discharge of auto submersible rainwater pump
Power to pump via 3 pin socket - plug the
rainwater pump in here.
Incoming power
to RainBank®
via 3 pin plug
3/4" BSP
male thread
1" BSP
male
thread
* Pressure Limiting Valve
WHERE MAINS PRESSURE
EXCEEDS 600kPa. A PLV*
MUST BE FITTED TO INLET!
Stop valve
200 Micron ‘Y’ Strainer
Pipe
WARNING: DO NOT INSTALL CHECK VALVES BETWEEN PUMP AND RAINBANK.
IMPORTANT: ALL PIPEWORK AND OUTLET FITTINGS FROM RAINBANK MUST BE
LABELLED TO AS/NZS 3500.1. DO NOT CONNECT WITH CRIMPED FITTINGS.

11
HOW TO INSTALL RAINBANK
1. Run mains water plumbing, rainwater plumbing and power supply through the
external wall according to the following template:
2. Mount RainBank to the wall using the bracket provided. Ensure outlet and mains
copper pipes are aligned with inlet/outlet of RainBank and it is horizontal.
515mm c to c
30mm
” copper
” copper
pipe to toilets
and laundry
pipe from
mains water
10amp single GPO
100mm
max

12
Cable tie
PVC pipe
Union
Float switch
Pump
Handle
2mm hole
3. Plumb 3/4” copper pipes to RainBank compression ttings.
Note: It is critical that pipes do not interfere with lters to allow access for
maintenance.
4. Once RainBank is mounted and plumbed, install cabinet to the wall over the
RainBank using the four xing holes provided. Allow at least 50mm clearance
between the base of the cabinet and the 10” lter housing. This allows the
lter to be removed for regular cleaning and maintenance.
5. 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.
6. Connect PVC or suitable plumbing to the pump
outlet and lower the assembly into the rainwater tank.
Cable tie the pump power lead to the pipework.
7. Connect pipework from tank to the Y strainer at the
base of the RainBank cabinet. Secure to the wall to
prevent sagging and pipe vibration.
Copper
pipe
Copper
pipe

13
8. Cable tie the power lead from the pump to pipework and plug into base of RainBank.
9. Open Mains water valve and check for leaks.
10. Switch on power to RainBank and check for ashing green light – light will ash
ten times as it boots up.
11. Open a tap downstream of RainBank to clear lines of air and check for leaks.
12. Press manual override button on top of RainBank to start the pump and clear
air from rainwater lines. There must be rainwater inside the tank – this is an
important part of commissioning the system.
13. Close tap and check for leaks.
MAINS
WATER
SUPPLY
RAINWATER
SUPPLY
TO TOILETS
AND LAUNDRY
Po
wer to pump via
3 pin socket
Incoming power to RainBank®
via 3 pin plug

14
TESTING
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 feeds the washing machine or ushes the toilet. Mains water should
ow normally. The pump should not turn on. The ‘status’ light should glow ‘red’ to
indicate that mains water is being used. When this is completed turn off tap.
2. Fill the rainwater tank with sufcient water to activate the pump.
3. Check that the pump is sitting in sufcient water (above the level of the oat) to
self prime and let air out without causing equipment damage ensure:
• All taps connected to the rainwater system are turned on.
• Toilets connected to the system are ushed so that the cistern lls and any
air is cleared from the line.
4. Turn on a tap or ush 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 ttings.
IMPORTANT: TO PROTECT AGAINST ELECTRICAL SURGES
AND LIGHTNING STRIKE DAMAGING RAINBANK OR ITS PUMP
WE STRONGLY RECOMMEND THE USE OF A SUITABLE SURGE
PROTECTION DEVICE AND RESIDUAL CURRENT DEVICES.

15
MAINTAINING RAINBANK
RainBank does not need maintenance but there are things you can do to ensure its
most reliable operation.
• Fit a “rst ush” system that ensures the rst run of dirty rainwater does not go
into the tank.
• Clean your gutters and rst ush devices ‘Y’ strainers and lter regularly.
• Remove branches that over hang your roof.
• Have a strainer tted to your rainwater tank inlet and regularly check this for
leaves and twigs, etc.
• You should also check for debris in the bottom of your tank a few times a year
and clean this out if necessary. A rst ush system will greatly reduce the need
for this action.
!
IMPORTANT MAINTENANCE PRECAUTIONS:
• Davey pump motors are tted 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.
• 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.
• 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.
• Do not use petroleum based uids 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.
• During servicing use only approved non petrochemical based o-ring and
gasket lubrication. If unsure consult your Davey dealer for advice.

16
TROUBLE SHOOTING RAINBANK
Symptom: Pump will not switch off
1. Pump plugged directly into power outlet.
Plug lead from pump into base of RainBank as per installation instructions on pg 10.
2. Water is still being used.
Check all taps, toilets and appliances connected to RainBank system to ensure
they are turned off.
3. Water is leaking on discharge side of RainBank system.
Check for leaks and repair.
Symptom: Pump will not switch on
1. Pump not plugged in.
Plug pump into base of RainBank and RainBank into power supply.
2. No power supply to pump.
Contact electrician and have power restored.
3. No water in tank.
Check water level in tank.
4. 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 owing.
5. Mains supply to RainBank turned off.
Turn on mains water supply. Press ‘manual override’ button to simulate mains
water owing. Pump will start if rain water is available.
6. Pump is faulty.
To conrm if the fault is within the pump, plug the pump directly into power
point and check to see if it starts. If the pump starts plug the pump back into
the RainBank and continue fault nding. If the pump does not start contact your
supplier for further advice.
7. Mains water ow is too low.
Ensure ow at most distant outlet is above 5 litres per minute.

17
Other symptoms
Pump is running but water is being sourced from the mains supply.
1. Pump needs to be primed.
2. Debris is caught inside RainBank preventing plunger mechanism from sealing
completely.
3. 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 ow.
Mains water not passing through RainBank.
Possible cause - debris is blocking inlet and or lters in or out of RainBank.
In order of most likely solution:
1. Mains inlet stop valve closed – open stop valve.
2. Microlene 10” lter cartridge element is blocked – remove and clean or
replace cartridge.
3. RainBank blocked – this is highly unlikely, ensure 1 and 2 are checked rst.
Mains water pressure and ow 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 t connection kit correctly. Remove RainBank
and re-install connection kit.
Mains water lling up tank.
Possible cause - debris caught inside RainBank.
Pump takes more than 10 seconds to turn on.
Check mains pressure and ow are about 5 litres per minute at 400kPa.

18
NOTES
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19
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.
Should you experience any difculties with your Davey product, we suggest in the rst 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 difculties 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 unauthorised 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 prots 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 below.
For a complete list of Davey Dealers visit our website (davey.com.au) or call:
Davey Guarantee Period
RainBank - Three Years Microlene Filter - One Year
* Installation and operating instructions are included with the product when purchased
new. They may also be found on our website.

AUSTRALIA
Customer Service Centre
6 Lakeview Drive,
Scoresby, Australia 3179
Ph: 1300 232 839
Fax: [phone]
Email: [e-mail]
Davey Water Products Pty Ltd
Member of the GUD Group
ABN 18 066 327 517
NEW ZEALAND
Customer Service Centre
7 Rockridge Avenue,
Penrose, Auckland 1061
Ph: 0800 654 333
Fax: [phone]
Email: [email protected]
® Davey is a registered trademark of Davey Water Products Pty Ltd. © Davey Water Products Pty Ltd 2021.
daveywater.com
P/N 401565-10