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INSTALLATION
INSTRUCTIONS
• INSTALLATION
• OPERATION
• TROUBLE SHOOTING
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.
WMTS-477:2016 Lic WM-022042
2
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 50 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 9000-2001 accreditation and ISO 14000 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.
CONTENTS
About RainBank. The easy way to save water.
Two types of installation - quick reference
How RainBank works
How to install RainBank
Before you start
Installation instruction
Pump outside tank option
Pump inside tank option
Float switch installation
Installation of Submersible Pumps
Priming Pumps
Maintaining RainBank
Trouble shooting RainBank 29
Warnings 32
Plumbers Tips
Davey Guarantee
Contact Details
33
35
36
18
25
26
28
9
11
12
14
6
7
4
5
3
4
ABOUT RAINBANK
THE EASY WAY TO SAVE WATER
Your actual savings depend on your roof catchment area, rainfall and the size of your tank.
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 homes.
RainBank may allow you to claim tank rebates (when installed on existing homes). Check with your local water authority.
• RainBank allows you to use water
from your rainwater tank for your
toilet, washing machine or garden
whenever there is water in the tank.
In some 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.
• If the tank water is exhausted
RainBank automatically and
seamlessly switches you over to
mains water.
RainBank is energy efficient and cheap to run.
Because RainBank only works when it is needed it uses very little energy.
• RainBank has an in-built “dual
check valve” for low hazard backflow
prevention. The daily power used to run a RainBank and pump system supplying two toilets in a three person dwelling is equivalent to: 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 reverse cycle air conditioner for
3 minutes
• A clothes dryer for 3 minutes
4 m
• A washing machine for 10 minutes
• A TV or PC for 30 minutes
5 m 5 m
100,000 Litres
TWO TYPES OF
INSTALLATION
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 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-pumped 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
waterin 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.
6
5. If there is a power failure during a
demand for water RainBank will
automatically supply the mains
water as backup.
HOW TO INSTALL RAINBANK
!
IMPORTANT
Because it involves mains water,
RainBank may only be legally
installed by a licensed plumber.
Ensure mains water pressure is
limited to 600kPa.
Tank: above ground
Pump: outside tank
Float switch: must be installed inside of tank
Pump Kit: KRB1, 2, 3 & 4
INSTALLATION TYPE 2 - PAGE 21
Mains In
To House
NOTE: Because the effects of seasonal change etc. can cause the pump and tank to move slightly relevant to the home it is highly recommended that discharge and/or suction pipe lines be fitted with flexible pipe, such as braided hose, reinforced suction hose or polythene pipe.
Tank: above ground
Pump: submersible inside tank
Float switch: incorporated with pump
Pump Kit: KRBS1 & 2
Different types of RainBank
Installations INSTALLATION TYPE 3 - PAGE 22
Mains In
To House
There are different ways a RainBank can be installed depending on your rainwater tank and pump configuration.
INSTALLATION TYPE 1 - PAGE 16
Mains In
To House
FS
Tank: below ground
Pump: submersible inside tank
Float switch: incorporated with pumps
Pump Kit: KRBS1 & 2
7
8
INSTALLATION TYPE 4 - PAGE 23
Mains In
To House
Different ways of installing the
RainBank unit itself.
• Exposed installation against wall
(under eaves).
Mains In
To House
FV
Tank: Below ground and at ground level
Float switch: Top entry
Pump Kit: KRB1, 2, 3 & 4
• Encased installation with unit and
pump inside cover.
Mains In
To House
• Integrated installation incorporated as
part of tank system.
Mains In
To House
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.
Other things we recommend to maximise the performance and serviceability of your RainBank.
• Fit a first flush system to the guttering
if possible to divert the initial run of
water from the roof that may contain
dirt and pollutants.
• 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 without appropriate
additional backflow.
• Make sure the wiring, plumbing and
the RainBank unit are protected
from access by children and pets.
• Fit a strainer to the top of your tank
inlet to stop leaves entering the
system.
• Fit a 1 inch ‘Y’ strainer with 200
micron mesh to the pipe work
between the pump and RainBank.
This will ensure that debris from
the tank will not build up inside
RainBank, washing
machines or toilet cisterns.
• Use at least 20mm or ¾ inch
plumbing to and from RainBank to
reduce the effect of pipe friction.
Galvanised pipe not recommended.
9
Make sure the delivery from
RainBank to your home is within the following pipe length limits:
Pipe diameter
15mm
18mm
20mm
Max. pipe length @
6 lpm flow
1m
90m
235m
Max. pipe length @
12 lpm flow
1m
27m
135m
For each bend or tee you should reduce the above distances by 0.5m.
• We recommend fitting isolation valves
to the rainwater and mains water pipe
so that the RainBank can be easily
and conveniently removed if required.
This saves both wasting rainwater and
having to turn off the mains supply if
the unit ever has to be removed.
• 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.
• Double check valve assemblies are available from Davey and should be installed if the tank is partially or fully buried.
• Mains water must be limited to below
600kPa.
10
INSTALLATION INSTRUCTIONS
• An inline ‘Y’ strainer between the pump and the RainBank controller is
recommended to stop foreign matter
entering the unit and damaging it.
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.
• RainBank is designed to handle
clean water and should not be used
for any other purpose without specific
referral to Davey. The use of
RainBank to pump flammable,
corrosive or other materials of a
hazardous nature will damage the
system and void the warranty.
• All pipe work and fittings 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’.
• Ensure all wiring, plumbing and the
RainBank unit are protected from access by pets and/or children.
• The pumping of abrasive materials
will damage the system and void the
warranty.
• Water freezing inside the RainBank will damage the unit. Locate your
RainBank and pump so that they are not susceptible to freezing.
• Mains electrical connections and checks must be made by a qualified electrician and comply with applicable local standards. The 5 volt float lead connections need not be carried out by a qualified electrician, but should be done in compliance with applicable standards.
• 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
600kPa.
11
PUMP OUTSIDE TANK
OPTION - OVERALL
MODEL NO. KRB1, 2, 3 & 4
3
8 2
6
1
1
8 2
6
1
6
2 8
5
3
4 3
9 1
7
6
2 8
4 3
9
5
7
5
9
4
6
6
Above Ground Option Above Ground Option Model No. KRB1,2,3&4
12
1
5
6
7
8
9
2
3
4
Mains water supply
900kPa Maximum
3/4” BSP Male thread
3/4” BSP Male thread
Pump Power lead
RainBank Power lead
Stop valve
Float switch
Manual start button
Rainwater supply via pump
Warning:
Do not reconnect with mains water supply
Important:
All pipework and outlet fittings from RainBank must be labelled to AS/NZS 3500.1
5
9
4
In-tank Option Model No. KRBS1&2
1
7
8
9
4
5
6
2
3
Mains water supply
900kPa Maximum
3/4” BSP Male thread
3/4” BSP Male thread
Pump Power lead
RainBank Power lead
Stop valve
Float switch
Manual start button
Rainwater supply via pump
Warning:
Do not reconnect with mains water supply
Important:
All pipework and outlet fittings from RainBank must be labelled to AS/NZS 3500.1
PUMP OUTSIDE TANK
OPTION - CLOSE UP
IMPORTANT: ALL PIPEWORK AND OUTLET FITTINGS FROM RAINBANK MUST BE LABELLED
TO AS/NZS 3500.1. TANK MUST HAVE ISOLATION VALVE FITTED. DO NOT CONNECT WITH
CRIMPED FITTINGS.
(do not mix/cross-connect with mains water supply from discharge of rainwater pu
WHERE MAINS PRESSURE EXCEEDS 600kPa. A PLV*
13
PUMP INSIDE TANK
OPTION - OVERALL
MODEL NO. KRBS1 & 2
8 2
6
1
3
1
7
6
2 8
4 3
9
5
6
Above Ground Option Model No. KRB1,2,3&4
1
7
6
2 8
4 3
9
5
5
9
5
6
Above Ground Option In-tank Option Model No. KRBS1&2 Model No. KRBS1&2
14
4
8 2
6
3
1
9
4
1
2
3
Mains water supply
900kPa Maximum
3/4” BSP Male thread
3/4” BSP Male thread
4 Pump Power lead
5 RainBank Power lead
6 Stop valve
1
5
6
7
8
9
2
3
4
7
3/4” BSP Male thread
8
Pump Power lead
9 Rainwater supply via pump
Stop valve
Warning:
Do not reconnect with
Rainwater supply via pump mains water supply
Warning:
Do not reconnect with
Important:
All pipework and outlet fittings from RainBank must be labelled to AS/NZS 3500.1
PUMP INSIDE TANK
OPTION - CLOSE UP
IMPORTANT: ALL PIPEWORK AND OUTLET FITTINGS FROM RAINBANK MUST BE LABELLED
TO AS/NZS 3500.1. DO NOT CONNECT WITH CRIMPED FITTINGS.
(do not mix/cross-connect with mains water supply) from discharge of auto submersible rainwater pump
WHERE MAINS PRESSURE EXCEEDS 600kPa. A PLV*
15
INSTALLATION TYPE 1
Above ground tank and pump outside tank. Suitable kit models:
KRB1, 2, 3 & 4
Mains In
To House
FS
Tools you will need
• Adjustable spanner 2” or 50mm
(across flats)
• Second adjustable spanner 2” or
50mm (across flats)
• Thread tape
• 20mm spade bit or hole saw to drill
hole in top of tank for float switch.
• If you are mounting the RainBank
to a wall as a bare installation you
will need the Davey RainBank wall
mounting bracket (p/n: 32556).
STEP 1 - PUMP POSITION
Evaluate and select the best pump site. This must be below the lowest anticipated level of the float switch and this level should be at least 100mm above the base of the tank to avoid sludge being drawn into the pump.
!
The pump site should be well drained and have a firm base. A concrete slab
600mm x 600mm is ideal.
STEP 2 - RAINBANK POSITION
Work out where the RainBank will be positioned. Check that there is a power point within reach of the 3 metre power lead .
!
Installation Inside Buildings : To cater for possible plumbing leaks or damage to the RainBank system components, the installation must include an enclosure that will capture any water spraying from the plumbing or RainBank system and direct it into a properly constructed drain tray.
!
Note : When installing a RainBank and/ or associated pump system inside a building, allowance for possible high pressure leakage
MUST be made.
!
Note : In order to carry out routine maintenance to the RainBank MUST be easily accessible to the end user or home owner.
IMPORTANT
Do not use long mains power extension leads as they cause substantial voltage drop, poor performance and can lead to motor overload.
Check that the float switch lead
(9m long) will reach the RainBank.
16
C
F
D
C
F
D
For greater distances between your rainwater tank and pump, a 10m float switch (top and side entry) extension lead (Davey Part No. 14186) will need to be added. Up to 4 float switch extension leads can be added between the pump and the rainwater float switch lead. It is recommended that the float switch extension lead/s are in a protective cinduit.
E
E
C
D
E
A
F
A
100
100
D
E
B
A
A
STEP 3a - TOP ENTRY FLOAT SWITCH
NOTE: THE VERTICAL POSITION OF
THE FLOAT SWITCH IN RELATION TO
THE PUMP WATER INLET IS CRITCAL
1. Measure the distance from the top of the tank (A) to the highest point of the tank outlet to the pump (B).
2. Mark on the float switch cable a length equal to A-B minus 200 millimeters or distance (B) to (D).
3. Drill a hole in the top of the tank large enough to suit a cable grommet or strain relief grommet (F) - not supplied.
4. Snap off retainer clip (C) from top of weight (D).
5. Position retainer clip 100mm from float ball (E).
6. Slide weight (E) over retaining clip and firmly snap into position.
7. Lower weight into tank and feed top of cable through hole drilled in Step 3.
8. Fasten with cable grommet to previously measured length (A) to (B).
!
Top
100
100
D
E
B
100
100
D
E
B
100
100
D
E
B
STEP 3b - ALTERNATE SIDE ENTRY
FLOAT SWITCH 32398
Bottom
Level switch stem
Compression nut
IMPORTANT
100
100
D
E
B
Bayonet join
Sealing grommet Sealing nut
• The level switch is suitable for
installation in polyethylene and
fibreglass tanks. It can be fitted in
steel tanks but cutting through the
zinc alum or colourbond coating of
the tank exposes bare steel and this
can rust. Check with the tank
manufacturer before drilling.
• The float switch is designed to be
installed from the outside of the tank.
There is no need to get inside the tank.
A
• The sealing grommet of the float
switch is designed to work in a
100
100
D
E
B
A
17
maximum tank wall thickness of
25mm. It is not suitable for concrete
or very thick plastic walled tanks.
There is an alternative float switch
that can be lowered into the top of
these types of tanks (Davey p/n: 13961).
Before cutting the hole check again that the 5m lead from the float switch will reach the RainBank and plug comfortably into it.
Work out the correct position for the hole for the float switch. With a corrugated profile tank wall this is on the upper flat section of the profile as shown below.
Note: Ensure level sensor is installed with ‘UP’ facing up
1. Drill a 22mm hole in the side of the
tank in the correct position. A spade
drill is the best tool for this job.
Ensure all swarf is removed from the
hole. If installing the switch in a
corrugated tank you should make
sure that it is installed on the flat
section between the radii as shown
below.
Centre hole on flat section of profile
Diameter of hole must be 22mm.
Work out the correct location of the float switch relative to the pump outlet.
150
Drill Hole
ø 22mm
40
To
Pump
10
0
Slab
The float switch location should also be:
• At least 40mm above the pump inlet.
• Placed away from the rainwater entry
into the tank so that the incoming flow
does not interfere with the operation
of the switch.
18
2. Ensure the compression nut is
loosened so that the sealing grommet
is not expanded. Remove the sealing
nut and insert the switch into the hole
as below.
Insert Float
3. The switch will not work properly if it
is not properly orientated. Make
sure the word “UP” is seen at the very
end of the switch body. Now tighten
the compression nut to expand the
seal (as shown below).
‘UP’
STEP 4 - CHECK PIPE WORK
Make sure the final assembled position of your RainBank will align well with the mains and rainwater pipe.
The pump and RainBank should be assembled so that the mains water supply to the unit and rainwater outlet to toilets and laundry connect easily to the plumbing on the same level.
Bellow deforms inside tank
Tighten
Compression
Nut
4. Ensure that the switch is still correctly
orientated. With the word “UP”
visible, screw on and tighten the
sealing nut to finish the installation of
the float switch.
STEP 5 - CONNECT PUMP TO
RAINBANK
Connect your pump to the RainBank
1. Screw rotary coupling into outlet of pump (teflon tape not required).
STEP 6 - CONNECT PIPES
Connect the RainBank to the mains water and delivery pipe plumbing.
Tighten Sealing
Nut
!
IMPORTANT
• To allow easy connection it is strongly
recommended that you have flexible
copper pipes that allow some
movement so that they can line
up exactly with the mains water and
rainwater outlet. These pipes must be
¾ inch in diameter.
19
• It is highly recommended that an
isolation valve be fitted to where the
mains water enters RainBank and
between the pump and the rainwater
tank. This facilitates easy removal
of the unit if required without turning
off the household water or losing
stored rainwater.
• Do not use thread sealing
compounds, hemp or pipe glue.
Do not use crimped fittings.
• All RainBank plumbing fittings feature
rotating unions that require bracing.
• If your access to the bottom of the
RainBank unit is difficult you may
have to connect the 5 volt connection
from the float switch before the
plumbing is connected.
STEP 7
1. Connect the pump power lead to
the three-pin socket underneath
RainBank.
!
IMPORTANT
This must connect to the RainBank
controller not the power point. If the
pump is connected to the power point
the pump will run constantly,
shortening the life of the pump and
potentially running the pump dry.
2. Connect the three-pin power plug
from the RainBank to your power point.
3. Connect the 5 volt lead from the float
switch to its flying lead; in the underside of the unit. This is not necessary if you are using a submersible pump as the float switch is already part of the pump.
Connect all leads.
MAINS
WATER
SUPPLY
TO TOILETS
AND LAUNDRY
Incoming power to RainBank via 3 pin plug
RAINWATER
SUPPLY
Power to pump via
3 pin socket
5 volt connection for float switch
20
To protect against electrical surges and lightening strike damaging RainBank or its pump we strongly recommend the use of a suitable surge protection device and residual current devices.
STEP 8 - 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 feed
the washing machine or flush the
toilet. Mains water should flow
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.
5. Remove the float switch connection
from the RainBank – this should
stop the pump and confirms that
the float switch and power
connections have been made correctly – refit the float switch connection. The ‘status’ light will now glow ‘red’ . Press the manual override button to operate the pump if needed. The ‘status’ light will glow
‘yellow’ while the manual override button is depressed.
NOTE: Mains water indicator light is not applicable in RainBank ‘S’ models.
6. Check for leaks around RainBank,
the pump, pipework and fittings.
2. Fill the rainwater tank with sufficient
water to activate or cover the float
switch.
INSTALLATION TYPE 2
Above ground tank with submersible pump inside eg: KRBS1 & 2
Mains In
To House 3. Check that the pump is correctly
primed and there are no air locks that
will interfere with its operation as per
the Davey instructions. This is
essential for the proper operation of
the unit. See the instructions on how
to do this for all types of Davey pump
in the Priming section on page 26.
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’ .
!
IMPORTANT
• This type of pump comes with its own
float switch system to detect water
level so it is not necessary to drill the
tank to fit a float switch.
21
• Failure to prime the submersible
pump prior to connection of the pump
to RainBank can cause an air lock
that may prevent the pump operating
properly.
INSTALLATION TYPE 3
Below ground tank with submersible pump D42A/B & D53A/B
Mains In
To House
The following sections of the Type
1 installation instructions are applicable to Type 2 installations.
Step 2 – Work out the position of your
RainBank with regard to distance to power. The float switch lead is not an issue here.
Step 4 – Align the RainBank for easy fitting to the plumbing and fit Davey wall bracket if required.
Step 5 – Connect RainBank to your submersible pump as per instructions on page 25.
Step 6 – Connect the RainBank to the plumbing as for Installation Type 1 on page 19.
Step 7 – Connect all leads as per
Installation Type 1 on page 20. There is no float switch lead as this is fitted to the submersible pump.
!
IMPORTANT
• Under AS/NZS 3500.1
collecting/storing rainwater in a
partially 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.
Step 8 – Test the unit - page 21.
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.
22
You should carry out the following steps as per the instructions for
Installation Type 1
Step 2 – Work out the position of your
RainBank with regard to distance to power. The float switch lead is not an issue here.
!
IMPORTANT
• Under AS/NZS 3500.1 collecting/
storing rainwater in a partially 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.
Step 4 – Align the RainBank for easy fitting to the plumbing. Fit Davey wall bracket.
Step 5 – Connect RainBank to your submersible pump as per instructions on page 25.
Step 6 plumbing.
Step 7 – Connect all leads (no float switch lead to plug in)
Step 8
– Connect the RainBank to the
– Test the unit - page 21
NOTE: To allow for the correct operation of your RainBank and for movement of the tank and pump which may occur over time, the suction pipe must have a length of flexible suction hose from pump to top of tank. This hose can be braided hose, reinforced suction hose or polythene pipe at least 1 metre in length.
The following sections of the Type
1 installation instructions are applicable to Type 4 installations.
INSTALLATION TYPE 4
Below ground tank with pump above tank and suction lift
Mains In
To House
Step 1 – Evaluate and select the best pump site as close to the water source and water level as possible.
Step 2 – Work out the position of your RainBank with regard to distance to power.
FV
23
D
C
Step 3 – Plumb up your suction plumbing ensuring that the lowest point in the inlet pipe is at least 200mm below the lowest water level and at least
100mm above the base of the tank.
Step 7 – Connect RainBank to the plumbing.
Step 8 – Connect all leads.
Step 4 – Install the float switch. Check that the float switch lead (9m long) will reach the RainBank. For greater distances between your rainwater tank and pump, a 10m float switch (top and side entry) extension lead (Davey Part No.
14186) will need to be added. Up to 4 float switch extension leads can be added between the pump and the rainwater float switch lead. It is recommended that the float switch extension lead/s are in a protective cinduit.
The float end should be set up so it can fall no lower than 100mm above the level of the lowest point in the inlet pipe so the pump will always be shut off well before it can run dry or draw in air.
Step 9 – Test the unit - page 21.
A
100
100
D
E
B
This is secured to the pump suction pipe with cable ties. Allow no more than
100mm of cable between the float and the lowest cable tie.
The plug end should be plugged into the float switch inlet on the underside of the
RainBank unit in Step 8.
Step 5 – Align the RainBank for easy fitting to the plumbing.
Step 6 – Connect RainBank to the pump.
24
F
A
100
100
D
E
B
INSTALLATION OF
SUBMERSIBLE PUMPS
Union
PVC pipe
Cable tie
Handle
Pump
Float switch
1. Use Teflon tape on the pipe
to pump connection.
2. Secure the power cable to the
delivery pipe with cable ties.
!
IMPORTANT
Do not pull on power lead. Fit a rope to handle for lowering and raising pump.
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.
25
PRIMING PUMPS
Type 1 installations. Above ground tank and pump outside tank.
1. Remove the priming plug on the
top of the pump and fill the casing
and suction line with water then refit
plug. If there is an isolation valve
fitted on the delivery pipe from the
rainwater tank (as recommended)
this needs to be opened.
2. Hold down ‘manual override’ button on the RainBank to operate pump to clear trapped air. Make sure an outlet
(tap) is open so that air and water can be dispelled and ensure the mains water is turned off until the pump is fully primed.
!
IMPORTANT
Leaky joins can also cause a loss of prime. NOTE: The pump must be below the float switch.
Type 2 and 3 installations.
Submersible pumps inside tank.
If there is an air lock i.e. the pipe and pump casing is not fully filled with water, the pump may not draw water. If this is the case you should repeat the priming procedure. If the pump still does not draw properly this may be a fault in the way the delivery pipe is installed. The pump should be slightly higher than the pipe inlet and this should run up hill to the pump at a slight but consistent slope so that any air is expelled at the pump end as the pump is primed.
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.
26
Type 4 installations. External suction pump drawing from below ground tank.
Pump inlet should be at least (200mm) below the lowest water level for reliable operation.
Priming is as for Type 1 installations.
If there is a significant amount of water required to do this it can be a good idea to fit the highest area of the pipe with an access plug in a T piece so that the pipe can be filled more quickly with a bucket when repriming.
27
MAINTAINING RAINBANK
RainBank does not need maintenance but there are things you can do to ensure its most reliable operation.
• 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.
• Fit a “first flush” system that ensures
the first run of dirty rainwater does
not go into the tank.
• Clean your gutters and first flush
devices and ‘Y’ strainers regularly.
• Remove branches that over hang
your roof.
• 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.
• Have a strainer fitted to your
rainwater tank inlet and regularly
check this for leaves and twigs, etc.
• Do not use petroleum based fluids or
solvents (e.g. oils, kerosene,
turpentine, thinners, etc. on the
plastic or seal components).
• 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 hydrocarbon based or
propelled sprays around the electrical
components of the controller.
• During servicing use only approved
non petrochemical based oring and
gasket lubrication. If unsure consult
your Davey Dealer for advice.
!
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.
28
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 20.
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.
4. Rock or debris caught inside
RainBank.
Call your plumber to fit a ‘Y’ strainer
– RainBank will need to be returned
to Davey.
29
SYMPTOM: PUMP WILL NOT SWITCH ON
1. Pump not plugged in.
Plug pump into base of RainBank
and RainBank into power supply.
See page 20.
2. No power supply to pump.
Contact electrician and have power
restored.
3. Float switch not connected to
Plug float lead into
base of RainBank. The connection
lead is located next to the power lead
coming from the RainBank.
To confirm the connection is correct,
depress ‘manual override’ button,
pump will start.
4. No water in tank.
Check water level in tank.
5. Float switch located at water
tank is installed incorrectly.
Check position of float. See pages
16-19.
6. 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.
7. Mains supply to RainBank
turned off.
Turn on mains water
supply. Press ‘manual override’
button to simulate mains water
flowing. Pump will start is rain water
is available.
8. Pump is faulty.
To confirm 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 finding. If the pump
does not start contact your supplier
for further advice.
9. Lead from float switch to pump
broken or damaged.
Replace float and lead assembly.
10. Float switch defective.
Contact your supplier for further
advice.
11. Mains water flow is too low.
Ensure flow at most distant outlet
is above 5 litres per minute.
30
OTHER SYMPTOMS:
Mains water is still in use when pump is running.
Possible cause – pump needs to be primed. Stop pump and remove priming plug from front top of pump (right above water inlet) and allow all air to escape from pump.
Replace the priming plug when water dribbles out of hole (see page 26).
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. Check all filters in plumbing are clean.
Mains water is still in use when pump is running.
Possible cause
– debris is caught inside RainBank preventing plunger mechanism from sealing completely. Contact your plumber to fit a ‘Y’ strainer to system between tank & RainBank.
Mains water is still in use when pump is running.
Possible cause – pump impeller blocked. Have pump serviced. Fit first flush devices and
‘Y’ strainer to pipework.
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.
Install first flush devices and ‘Y’ strainer.
Green light flashing.
Boot-up sequence only.
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.
Red light flashing.
Pump has lost prime and needs to be filled with water, see page 26. Pump will automatically retry at: 1, 5, 30, 60 and 120 minute intervals.
Mains water not passing through
RainBank.
Possible cause – debris is blocking inlet to RainBank. Remove
RainBank and clean inlet. Check all filters are clean.
Pump takes 10 seconds to start.
This is anti-cycling software that allows
1 start every 10 seconds.
31
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.
• 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.
• Secure all openings to the rainwater tank to ensure it will not permit access to children.
!
Installation Inside Buildings : To cater for possible plumbing leaks or damage to the RainBank system components, the installation must include an enclosure that will capture any water spraying from the plumbing or RainBank system and direct it into a properly constructed drain tray.
!
Note : When installing a RainBank and/ or associated pump system inside a building, allowance for possible high pressure leakage
MUST be made.
!
Note : In order to carry out routine maintenance to the RainBank MUST be easily accessible to the end user or home owner.
!
Note : 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.
32
PLUMBERS TIPS
1. Install pump on a level, solid, well drained site (this will reduce noise and pipe stress).
2. Fit first flush devices to all down pipes to ensure clean water inside the tank
(dirty tank water can stain toilets & clothes).
3. Clear swarf from all pipes and holes drilled into the tank (swarf can block valves,
RainBank and toilet valves). Fit a 200 micron ‘Y’ strainer before the pump or between the pump and RainBank.
4. Fit a stop valve on mains water line before RainBank (makes servicing easier) .
5. Fit a stop valve between pump and tank outlet (makes servicing easier).
6. Check with local council plumbing teams for backflow requirements.
7. Keep pipe work well braced as vibrations can become noisy.
8. Fill rainwater tank above float switch with garden hose to check system.
9. 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.
Protect from the weather Don’t create air locks!
Fit isolation valves Prime pump before switching on
33
Notes
34
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 Controller - Three Years Pump - Two 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 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 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 below.
For a complete list of Davey Dealers visit our website (davey.com.au) or call:
Davey Water Products Pty Ltd
Member of the GUD Group
ABN 18 066 327 517 daveywater.com
AUSTRALIA
Customer Service Centre
6 Lakeview Drive,
Scoresby, Australia 3179
Ph:
Fax:
1300 232 839
1300 369 119
Email: [email protected]
NEW ZEALAND
Customer Service Centre
7 Rockridge Avenue,
Penrose, Auckland 1061
Ph:
Fax:
0800 654 333
0800 654 334
Email: [email protected]
® Davey is a registered trademark of Davey Water Products Pty Ltd. © Davey Water Products Pty Ltd 2020.
* Installation and operating instructions are included with the product when purchased new.
They may also be found on our website.
35
Davey Water Products Pty Ltd
Member of the GUD Group
ABN 18 066 327 517 daveywater.com
AUSTRALIA
Customer Service Centre
6 Lakeview Drive,
Scoresby, Australia 3179
Ph:
Fax:
1300 232 839
1300 369 119
Email: [email protected]
NEW ZEALAND
Customer Service Centre
7 Rockridge Avenue,
Penrose, Auckland 1061
Ph:
Fax:
0800 654 333
0800 654 334
Email: [email protected]
® Davey is a registered trademark of Davey Water Products Pty Ltd. © Davey Water Products Pty Ltd 2020.
P/N 401336-12
® RainBank is a registered trademark of Davey Water Products Pty Ltd.
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