Nexus Eazy 220 and 320 Automatic System
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NEXAUTO1120916MAN
UK
English
INSTALLATION AND INSTRUCTION MANUAL
IMPORTANT PLEASE READ:
We recommend that all electrical work on your Nexus Automatic
System be done by a suitably qualified electrician.
PRIOR TO INSTALLATION - MANUALLY CLEAN YOUR FILTER
Evolution Aqua Ltd. - Evolution House - Kellet Close - Wigan - Lancashire - United Kingdom - WN5 0LP
t +44 (0) 1942 216554 - f +44 (0) 1942 418 489 - e info@evolutionaqua.com - w www.evolutionaqua.com
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WARNING: PLEASE READ THE FOLLOWING
SAFETY INFORMATION FIRST.
IMPORTANT SAFETY INFORMATION
- All electrical work should be carried out by a suitably qualified electrician.
-A
lways isolate the unit from mains electricity before carrying out any
maintenance.
-A
lways disconnect all pond appliances from the mains supply before
putting your hands into the water.
-U
se in the area of the garden pond only if the installation complies with
the relevant wiring regulations.
- Power
must be supplied through a Residual Current Device (RCD) with a
residual operating current not exceeding 30mA.
- This unit must be earthed when earth wire is fitted.
- The unit must not be submerged in water.
-A
lways hold a component part securely. Never hold any component parts
by their wires alone.
- Young children should always be supervised near water.
Disposal Of Your Old Product
Your product is designed and manufactured with high quality material
and components, which can be recycled and reused. When this crossedout wheeled bin symbol is attached to a product, it means the product
is covered by the European Directive 2002/96/EC. Please contact
your local authority about correct disposal for electrical and electronic
equipment. Our WEE Registration Number is WEE/FE1471RR.
Please act according to your local rules and do not dispose of your old
products with your normal household waste. The correct disposal of your
old product will help prevent potential negative consequences for the
environment and human health.
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INTRODUCING THE NEXUS AUTOMATIC SYSTEM
Thank you for purchasing an Evolution Aqua Nexus Automatic System.
Continuing our long standing reputation for innovation, the Nexus Automatic System now enables Nexus
owners to benefit from a fully automated cleaning cycle on their multi award winning Nexus filtration
systems. Physically turning ball valves and manually switching pumps on and off will now be a thing of
the past thanks to the Nexus Automatic System. All of the key processes that form the cleaning cycle
are now controlled automatically with this easy to install kit.
Please read this instruction manual carefully from start to finish before attempting to install your
Nexus Automatic System.
CONTENTS
Parts list
PAGE 04
Installation diagrams
PAGE 06
Advice prior to installation
PAGE 08
Installing the Inlet Valve Assembly
PAGE 10
Fitting the control box
PAGE 12
Fitting the Air Valve Control box
PAGE 14
Connecting air lines
PAGE 16
Installing the Automated Waste Valve
PAGE 18
Operation
PAGE 20
Cleaning principles
PAGE 21
Installing non-return valves
PAGE 22
Guidance for electrical connections
PAGE 23
Cleaning with the Nexus Automatic System
PAGE 24
The cycle timer explained
PAGE 25
Setting the cycle timer
PAGE 26
Commissioning
PAGE 27
Troubleshooting
PAGE 27
Warranty
PAGE 29
3
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NEXUS AUTOMATIC SYSTEM PARTS LIST
Your Nexus Automatic System comes complete with the following items:
(GRAVITY FED MODELS ONLY)
(PUMP FED MODELS ONLY)
EA CODE: K25-50-100
1) Inlet valve assembly + seal (not fitted)
(Only supplied for GRAVITY FED installs,
not supplied with Pump Fed models)
3) Automated waste valve
4
2) Non-return valve
(Only supplied for PUMP FED installs,
not supplied with Gravity Fed models)
4) Control box
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NEXUS AUTOMATIC SYSTEM PARTS LIST
Your Nexus Automatic System comes complete with the following items:
B
C
D
E
A
500mm of
12mm air line
F
6) Fixing kit
5) Air valve control box & fittings
(Including screws & O-Rings for lid)
7) Qty x 1 - 500mm air line extension
(For connecting to bio-chamber)
-
Qty
Qty
Qty
Qty
Qty
Qty
Qty
Qty
Qty
x
x
x
x
x
x
x
x
x
1
5
5
2
4
4
4
1
1
-
3mmH 5mm
5mm I
G 3mm
3mm
3mm
(Located inside the cardboard box divider)
Control box mount bracket - A
Fixing screw inserts - B - (Qty x 2 if PUMP FED Model)
Pan head hex socket screws - C - (Qty x 2 if PUMP FED Model)
Pan head self tap box / mount screws (10mm) - D
25mm air box fixing screws - E
O-Rings for 25mm air box fixing screws - F
Cable ties - G
3mm allen key - H
5mm allen key - I
8) 1 metre of flexible cable conduit
(Located inside the cardboard box divider)
TOOLS NEEDED
Length according to installation
Length
Length according
according to
to installation
installation
Length according to installation
You will need to use the following tools to aid installation of the Nexus Automatic System:
3mm
3mm
3mm
3mm
5mm
5mm
5mm
5mm
3mm
5mm 333Core
3mm 6mm
6mm
3Core
Core
3mm
3mm
3mm
6mm
6mm
Core
Mains
Cable
Mains
Mains
Cable
MainsCable
Cable
3mm
6mm
5
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NEXUS GRAVITY FED AUTOMATIC SYSTEM INSTALLATION
Illustration below shows the recommended installation of a Nexus Automatic System on a
GRAVITY FED Nexus 300, 310 or 320 and Nexus 200, 210 or 220 manufactured after 2006:
Air valve
control box
Inlet valve assembly
500mm of
12mm air line
Control box mount bracket
To
air
pump
To mains power
To circulating pump
Control box
Automated waste valve
Depending on your installation, it is advisable to fit a non-return valve
(not supplied) on your return pipework after the circulating pump. (See page 22)
We recommend that all electric work on your Nexus Automatic System
be done by a suitably qualified electrician.
6
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NEXUS PUMP FED AUTOMATIC SYSTEM INSTALLATION
Illustration below shows the recommended installation of a Nexus Automatic System on a
PUMP FED Nexus 300, 310 or 320 and Nexus 200, 210 or 220 manufactured after 2006:
NOTE:
Inlet valve
assembly
is not needed
Air valve
control box
500mm of
12mm air line
Control box mount bracket
To
air
pump
To mains power
To circulating pump
Control box
Automated waste valve
You MUST fit the supplied non-return valve on your inlet pipework after the
circulating pump and before the filter. (See page 22 for more details)
We recommend that all electric work on your Nexus Automatic System
be done by a suitably qualified electrician.
7
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PREPARING YOUR NEXUS PRIOR TO INSTALLING
THE NEXUS AUTOMATIC SYSTEM
FOR NEXUS FILTERS ALREADY IN USE:
1. Carry out a normal cleaning cycle on your Nexus
If you have an existing Nexus filter system, currently in use, clean it as you would do normally as part of
your maintenance routine prior to installing the Nexus Automatic System.
2. D
isconnect your circulating pump from
mains power supply
Once the Nexus Automatic is installed, the power supply to the circulating
pump will come from the Nexus Automatic Control box rather than being
supplied directly from the mains. Turn off and disconnect the pump from
the mains supply.
OFF
If the circulating pump is connected to a plug, this will need to be cut off to
allow for direct connection into the control box.
3. Disconnect part of the air line for the Eazy and Bio-Chamber
Currently, the incoming air lines connected to the Eazy and the Bio-Chamber in your Nexus are diverted via a
T-Piece connector and are controlled by Air Valves. You will need to disconnect this T-Piece and the airline up
to the valves. We recommend that you leave the Air Valves and Air Lines to the Eazy and Bio-Chamber in place,
simply disconnect the T-Piece and leave both Air Valves in the OPEN position at all times. Discard the T-Piece
and the 2 small air lines, but keep the air line that connects your pump to the Nexus. This piece is needed for reinstalling your air pump.
Disconnect the
T-Piece and
airlines after the
air valves.
Leave the
air valves in an
OPEN position.
New air valve assemblies can be ordered from EA:
Keep this length of air line
8
EA CODE
PART DESCRIPTION
1000-085
3/8” Mini Ball Air Valve (F/F)
1000-080
3/8” BSP Male Stud connector
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INSTALLING THE NEXUS AUTOMATIC SYSTEM
Some component parts are pre-wired together.
Do not hold any of the component parts by the wires alone.
It is advisable for two people to carry out the installation.
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FITTING THE NEXUS INLET VALVE ASSEMBLY (GRAVITY FED)
The inlet valve assembly is only needed on GRAVITY FED Nexus 200, 210, 220 and Nexus 300,
310 and 320 models manufactured after 2006.
Wires should
face the
control box.
View from
inside
the Eazy.
1. The inlet valve assembly should be fitted with the
wires from the actuator facing the Nexus name panel
and the location of the control box. NOTE: The inlet
valve is supplied in the “OPEN” position. The foam
seal should not be fitted at this stage.
Nexus name
plate on this
side of Nexus.
2. In preparation for drilling 3 pilot holes, fit the inlet
valve assembly into the correct location. If required,
use a sash clamp to squeeze the Nexus inlet together
to fit the inlet valve assembly. It may be necessary to
drain part of the Nexus to enable easier fitting.
NOTE: The foam seal should not be fitted to the
valve at this stage.
Wires should
face the
control box.
Wires should
face the
control box.
View from
inside
the Eazy.
Nexus name
plate on this
side of Nexus.
3. With the assembly in position, use the 3 holes in
the top of the inlet plate assembly as a guide, and
drill 6mm holes through each hole through the body
of the Nexus.
10
View from
inside
the Eazy.
Nexus name
plate on this
side of Nexus.
4. Now the 3 holes have been drilled, remove the
inlet slide plate assembly. Use a knife or blade to
remove any burr or excess plastic from around the
holes you have drilled.
View from
inside
the Eazy.
Nexus name
plate on this
side of Nexus.
5. Using the 5mm allen key, screw the 3 fixing
inserts into the holes you have drilled in the
body of the Nexus. Tighten inserts until flush
with the surface.
Edge
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Seal
6. Ensure all edges of the inlet valve assembly are
completely dry. Peel off the backing tape from the
foam seal, then proceed to fit the foam seal around
edge of the outer blade on inlet valve assembly.
The seal must be centrally aligned. Trim off any
excess length.
Wires should
face the
control box.
Wires should
face the
control box.
View from
inside
the Eazy.
Nexus name
plate on this
side of Nexus.
7. With the foam seal fitted, re-fit the inlet slide plate
assembly, again using a sash clamp if needed.
View from
inside
the Eazy.
Nexus name
plate on this
side of Nexus.
8. Using the 3mm allen key, screw the 3 hex socket
screws into the fixing inserts and tighten up.
11
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FITTING THE CONTROL BOX ONTO THE NEXUS
We suggest that you familiarise yourself with the inside of the control box prior to installation.
See pages 23 to 27 for more information.
Inlet valve
only installed
on Gravity Fed
set-ups.
B
12
A
1. The Nexus Automatic Control Box should be
positioned in between the inlet and outlet of the
Nexus in either position A or B as shown. We
recommend installing it in position A.
NOTE: Take care not to pull on any connector wires
during installation.
2. Use 2 x 10mm self tapping screws to fit the
stainless steel mounting bracket onto the back
of the control box to allow the control box to be
mounted to the Nexus. (These are the 2 inner
holes on the stainless steel bracket that align
with the box mounts).
3. Hold the Nexus Automatic control box in the
position you want it located on the Nexus. Now use a
marker pen to make 2 marks where the screw holes
are on the stainless steel bracket.
4. Move the control box away and then drill 2 holes
into the positions you have marked using a 6mm drill.
You may need to use a knife to remove any excess
plastic or burr from around the holes you have drilled.
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5. Screw 2 fixing inserts into the holes you have
just drilled using the 5mm allen key. Tighten
inserts until flush with the surface.
6. Fix the control box onto the Nexus using the pan
head hex socket screws and the 3mm allen key.
13
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INSTALLING THE AIR VALVE CONTROL BOX
Inlet valve
only installed
on Gravity Fed
set-ups.
500mm
Air line
14
1. You are now going to install the air valve control
box onto the inlet cover on your Nexus. Position this
box so the “Power” and “Air To Bio-Chamber” outlets
face the main control box, as shown.
2. Remove the lid off the Air Valve Control Box by
unscrewing the 4 screws in each corner of the box
to allow access to fixing locations. NOTE: Keep the
4 screws and O-Rings safe for re-fitting later.
3. Place the Air Valve Control Box as shown.
Make sure the air line to the Eazy sits between the
Actuator and the stainless steel plate on the inlet
valve assembly.
4. To fit the Air Valve Control Box in this position,
drill 4 pilot holes using the 3mm drill bit through the
4 plastic panels in the base of the box.
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500mm
Air line
5. When all 4 pilot holes have been drilled, use the
25mm screws and O-Rings, provided, to screw the
box onto the Nexus. Use a pozi drive screwdriver to
tighten the 4 screws up.
6. Use the 4 screws and O-Rings you removed in
Step 2 to tighten up the lid on the Air Valve Control
box.
7. The Air Valve Control Box is fitted into position
ready for air line installations.
15
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CONNECTING THE AIR LINE TO THE EAZY
AND BIO-CHAMBER ON THE NEXUS
1. CONNECTING PRE-FITTED AIR LINE TO THE EAZY
The piece of airline pre-connected to the Air Control Valve port labelled “Air to Eazy” needs to
be inserted into the Air Valve on the centre chamber wall of the Nexus. This then connects to
the air line that wraps around the Eazy and connect up to the 90° elbow located at the bottom
of the Eazy in the centre chamber. Please ensure this airline is fed between the actuator and
the stainless steel cover on the Inlet Valve Assembly.
2. CONNECTING AIR LINE TO THE BIO-CHAMBER
The piece of air line supplied in the box (Item 7) should be connected to the Air Control Valve
port labelled “Air to Bio-Chamber”. This needs to be fed through the hole in the Nexus inlet and
connected up to the Air Valve fitted to the outer chamber wall of the Nexus.
3. CONNECTING AIR LINE TO THE AIR PUMP
Take the existing length of air line you removed earlier (see page 8) that was connected between
the T-Piece valve on your Nexus and your Air Pump. Now connect this air line into Air Control
Valve box in the port labelled “Air Pump”. (You do not need the old T-Piece and small lengths of
air line you removed earlier on page 8.
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CONNECTING THE AIR LINE TO THE EAZY AND
BIO-CHAMBER ON THE NEXUS
AIRLINE
TO THE
AIR PUMP
(Not supplied)
AIRLINE TO EAZY
(Factory fitted)
AIRLINE TO
BIO-CHAMBER
(Supplied in box)
**IMPORTANT:
he air pump MUST be positioned above the water level on both GRAVITY-FED and
T
PUMP-FED installations. This is to avoid any possibility of back siphoning.
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INSTALLING THE AUTOMATED WASTE VALVE
ONTO THE WASTE PIPEWORK
Inlet valve
only installed
on Gravity Fed
set-ups.
1. You are now going to install the automated waste
valve on the waste return pipework from your Nexus.
You can position this anywhere that is convenient on
the waste pipe run within reach of the power cable.
2. Before installation, ensure the waste valve on the
Nexus is in a closed position.
100mm
Mark 1
3. Taking the Automated Waste Valve, unscrew both
union ends off the automated waste valve.
18
Mark 2
4. Use a pencil or pen to mark the waste pipework
in line with one end of the ball valve minus the end
cap. Then measure 100mm along the pipe and make
a second mark.
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100mm
5. From the lines you have marked, cut through the
pipework using a saw. Clean and dry the remaining
pipe thoroughly.
6. Clean and dry the pipe thoroughly. Ensure the
union nut is over pipe prior to gluing the insert
flange. Apply solvent weld glue to one of the cut
ends of the pipe and fit the flange onto the pipe.
TIP: We recommend a “wet and dry” PVC glue be
used for gluing the flanges.
7. Using the automated waste valve as a guide, fit
the valve into the glued union end, but do not glue
the other union end.
8. Mark the unglued flange position on the pipe
with a pencil or marker pen.
MARK
9. Remove the automated waste valve from the pipe.
MARK
10. Ensure the union nut is over pipe prior to gluing
the insert flange. Then, using the mark you made in
Step 8 as the guide, glue the flange onto pipe so it
is located at this mark.
11. Now fit the automated waste valve back in
between the union ends and tighten both ends up.
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OPERATION
The Nexus Automatic System will control the cleaning cycle fully automatically. During the cleaning cycle, water is
flushed to waste, this will mean that unless the water in your pond is topped up, the water level will go down. We
recommend that an automatic top up system be added to your installation to allow for this.
Cleaning is done on a timer, which is factory set at every 3 days, however, this is easily adjustable to fit in with your
pond requirements. (See “SETTING THE TIMER”)
The Nexus Automatic System will run a cleaning cycle which lasts approximately 10 minutes.
0
2.5
5
7.5
APPROX. CLEANING TIMES (Mins)
Nexus Automatic Gravity Fed cleaning cycle:
■ Adjustable timer kicks in to start a cleaning cycle.
■ Control box automatically switches circulating pump off.
■ The water level in the Nexus equalises (this will take around 2 minutes)
■ Inlet valve closes whilst at the same time air is diverted from
the outer bio-chamber to the Eazy to clean the media.
■ After the media inside the Eazy has been cleaned, the automated waste valve opens.
■E
azy is drained to waste and inlet valve opens for a
final flush of the Eazy.
■ The automated waste valve closes.
■ Air is diverted back from the Eazy to the bio-chamber.
■ Circulating pump is switched back on.
10
■ Nexus returns to filtration mode.
0
2.5
5
7.5
APPROX. CLEANING TIMES (Mins)
Nexus Automatic Pump Fed cleaning cycle:
■ Adjustable timer kicks in to start a cleaning cycle.
■ Control box automatically switches circulating pump off.
■ The water level in the Nexus equalises (this will take around 2 minutes)
■ Air is diverted from the outer bio-chamber to the Eazy to clean the media.
■ After the media inside the Eazy has been cleaned, the automated waste valve opens.
■ Eazy is drained to waste.
■ The automated waste valve closes.
■ Air is diverted back from the Eazy to the bio-chamber.
■ Circulating pump is switched back on.
■ Nexus returns to filtration mode.
10
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CLEANING PRINCIPLES
The generally accepted practice is that when you keep ornamental fish, whether in a pond or in an aquarium, to keep
the water fresh, 10% of the volume of the water in the pond/aquarium should be changed on a weekly basis.
With this in mind, we recommend that you set your Nexus Automatic system to run a cleaning cycle so as to exchange
water in line with this.
FOR EXAMPLE – the Nexus 320 Automatic Cleaning cycle will send around 200 litres of water to waste. If your pond
is 14000 litres, then it would need 7 cleaning cycles per week to do a 10% water change, so the Nexus Automatic
System should be set up to clean on a daily basis (once per day).
To alter the timer, see “SETTING THE TIMER”.
The Nexus Automatic System can also run a cleaning cycle on demand, simply by pressing the “Manual Clean” button.
21
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NON-RETURN VALVE ON GRAVITY FED INSTALLATIONS
In certain circumstances, depending on your proposed set-up, a non-return valve should be fitted after the pump.
This is to prevent water siphoning back from the pond when the waste valve is in an open position.
Order a 1½” non-return valve from Evolution Aqua quoting part number: K25-50-100
NON-RETURN VALVE ON PUMP FED INSTALLATIONS
In order to maintain the water level in the filter, the PUMP-FED installation requires the non-return valve provided to
be fitted after the pump and before the filter.
The non-return valve is to prevent water going back to the pond.
Please ensure the non-return valve is fitted in the correct direction, with the arrow on the non-return valve pointing
towards the filter and not the pump.
You may require the additional parts:
- 1½” hosetail - EA CODE: HOSETAIL15
- Reducing sleeve 1½” TO 40mm - EA CODE: M35-0-50
22
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GUIDANCE FOR ELECTRICAL CONNECTIONS
We recommend that all electric work on your Nexus Automatic System
be done by a suitably qualified electrician.
ALWAYS DISCONNECT FROM MAINS BEFORE OPENING THE FRONT OF THE BOX.
For the avoidance of doubt: GREEN/YELLOW = EARTH, BROWN = LIVE, BLUE - NEUTRAL
1. To open the box, use a flat head screwdriver to
unscrew the plastic screws on the box. The lid can
open to 90° with 2 loose screws. DO NOT FORCE
THIS OPEN.
2. With the box front open, familiarise yourself with the
connectors inside.
3. The circulating pump power cable needs to be fed
through the gland nut, with enough exposed wire to
push into the connector blocks labelled “PUMP”.
4. Use an electrical screw driver to tighten up the
Earth, Live and Neutral wires into the corresponding
coloured connectors in the “PUMP” block.
5. Ensure the 3 core mains cable you intend to use
is long enough to reach the control box from your
incoming mains supply. Feed this wire through the
gland nut and connect up to the 3 ports in the block
labelled “MAINS” as per the pump wire.
6. Your connections should now look like this.
Now re-fit the lid by tightening up the 4 plastic screws
on the outer casing of the control box.
ENSURE ALL GLAND NUTS ARE TIGHTENED TO PREVENT WATER INGRESS.
23
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CLEANING WITH THE NEXUS AUTOMATIC SYSTEM
MANUAL CLEAN
When you push the “MANUAL CLEAN” button a cleaning cycle will begin.
Once initiated, we advise that you allow the cleaning cycle to run from start to finish. However, in unexpected
circumstances by interrupting and restarting the power supply, the system will reset itself to a zero start condition
for all functions i.e.; inlet valve open, automated waste valve closed, timer at start, once the power is resumed.
(A power cut will have the same effect).
AUTOMATIC CLEAN
You do not need to push any buttons to start an Automatic Clean.
The frequency of cleaning is factory set to cycle once every three days.
This time period can be easily adjusted by changing the CYCLE TIMER located inside the control box.
Once an Automatic Clean is initiated, we advise that you allow the cleaning cycle to run from start to finish. However,
in unexpected circumstances by interrupting and restarting the power supply, the system will reset itself to a zero start
condition for all functions ie; inlet valve open, automated waste valve closed, timer at start, once the power is resumed.
(A power cut will have the same effect).
THE CYCLE TIMER EXPLAINED
SCREW A
SCREW B
DO NOT
ADJUST
(Covered
by label)
24
INSIDE THE CONTROL BOX
THE CYCLE TIMER
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THE CYCLE TIMER EXPLAINED
THE CYCLE TIMER EXPLAINED
ONLY ADJUST SCREW A AND B ON THE FIRST CYCLE TIMER.
NEVER ADJUST ANY OTHER TIMER SCREW.
THE CYCLE TIMER IS FACTORY SET TO INITIATE
A CLEANING CYCLE ONCE EVERY 3 DAYS
This cleaning cycle is programmed by turning the top 2 red screws on
the first timer block. Each screw head has an arrow which should point
towards the correct digit you require.
his screw sets the number of times the cycle can be
SCREW A - T
initiated in any period from one day through to 10 days
on a coarse scale.
NEVER SET SCREW A AT LESS THAN 1 h
SCREW B - This screw sets a fine division within the coarse scale.
EXAMPLE - To enable the Nexus Automatic System to clean your
Nexus once every 3 days SCREW A points to 10 d (a coarse period of
10 days) and SCREW B points to 30 (30%).
This instructs the timer to carry out 1 clean every 3 days.
KEY TO SYMBOLS ON THE CYCLE TIMER DISPLAY
DIGIT DISPLAYED ON TIMER
DESCRIPTION
USAGE
1s
1 second
DO NOT USE
10 s
10 seconds
DO NOT USE
1m
1 minute
DO NOT USE
10 m
10 minutes
DO NOT USE
1h
1 hour
Can be used
10 h
10 hours
Can be used
1d
1 day
Can be used
10 d
10 days
Can be used
ON
Timer override not used
DO NOT USE
OFF
Timer off override not used
DO NOT USE
25
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SETTING THE CYCLE TIMER
If you do not want to have your Nexus cleaned once every 3 days, as is factory set, you can alter the cleaning frequency
to suit your needs. Simply turn SCREW A and SCREW B to point to the different digits using the sequences shown in the
tables below:
Use a pozi-drive screwdriver to turn the screw head,
so the arrow on the dial points to the appropriate digit.
SCREW A - This screw sets the time of the cycle.
(Factory set pointing to 10 d)
SCREW B - This screw sets the frequency as a
percentage of the time set above. (Factory set
pointing to 30%)
TO HAVE YOUR NEXUS CLEANED MORE THAN ONCE PER DAY
USER’S CLEANING FREQUENCY
SCREW A POINTS TO
SCREW B POINTS TO
1 clean every day / 24 hours
1d
100%
2 cleans every day / 24 hours
1d
50%
3 cleans every day / 24 hours
1d
30%
4 cleans every day / 24 hours
1d
25%
TO HAVE YOUR NEXUS CLEANED BY DAY
USER’S CLEANING FREQUENCY
SCREW A POINTS TO
SCREW B POINTS TO
1 clean every 2 days
10 d
20%
** 1 clean every 3 days **
10 d
30%
1 clean every 4 days
10 d
40%
1 clean every 5 days
10 d
50%
1 clean every 6 days
10 d
60%
**FACTORY DEFAULT SETTING**
TO HAVE YOUR NEXUS CLEANED BY WEEK
26
USER’S CLEANING FREQUENCY
SCREW A POINTS TO
SCREW B POINTS TO
1 clean every 7 days
10 d
70%
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COMMISSIONING THE NEXUS AUTOMATIC SYSTEM
Once you have satisfied yourself that the component parts are installed correctly on your system, you can commission the
unit ready for operation.
FINAL CHECKS
- Ensure your existing manual waste valve fitted on the Nexus filter is moved to an OPEN position
- Ensure all gland nuts on the control boxes are tight
- Check that the non-return valve is fitted in the correct location (where applicable)
- Check that the circulating pump is connected the control box.
- Check the air pump is connected to the mains power and that airline is connected to the Air Valve box.
- Use the cable ties and conduit provided to tidy up the cables from the control box
START UP
- Switch on your air pump
- Check air is getting to the bio-chamber making the media agitate (as per normal Nexus moving bed)
- Switch on mains supply to the control box
- Check circulation pump is running
- The green light on the front of the control box labelled “Filtration Mode” will be illuminated
- Push the “Manual Clean” button on the control box to initiate the first cleaning cycle
-T
he yellow light on the front of the control box labelled “Cleaning Mode” will be illuminated.
This light will remain on for the 10 minute duration of the cleaning cycle (See page 20 for more details)
- After the cleaning cycle has finished, the control box will revert to timer mode and the green light will illuminate
27
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TROUBLESHOOTING
There is no power to the control box
-C
heck the wiring is correctly installed. Seek advice from a suitably qualified
electrician if in doubt.
-C
heck the mains connection to the control box. Seek advice from a suitably qualified
electrician if in doubt.
-C
heck the fuses inside the control box. These are located alongside the timer blocks
within their own hinged compartments. The fuses are all standard glass fuses;
10 Amp, 5 Amp, 2 Amp, 2 Amp from left to right.
- Please be aware that every control box system is fully factory tested.
The inlet valve does not turn during cleaning cycle
- Check if the inlet valve is being obstructed.
-C
heck if the yellow light is illuminated. If light is not illuminated after 3 minutes,
initiate a manual clean to check operation.
-C
heck the wiring is correctly installed. Seek advice from a suitably qualified
electrician if in doubt.
-C
heck the mains connection to the control box. Seek advice from a suitably qualified
electrician if in doubt.
-C
heck the fuses inside the control box. These are located alongside the timer blocks
within their own hinged compartments. The fuses are all standard glass fuses;
10 Amp, 5 Amp, 2 Amp, 2 Amp from left to right.
Nexus does not drain to waste
- Check that the 1½” ball valve on the Nexus is in an open position.
- Is cleaning cycle fully operational. From initiating a cleaning cycle it will take 7 to 8
minutes before the automated waste valve opens. (Refer to OPERATION on page 20)
- Check automated waste valve is connected correctly.
Air does not divert between bio-chamber and Eazy automatically during cleaning cycle
- Check air pump is running.
- Check the air line is correctly installed from the air pump to the air control box.
-C
heck cleaning cycle is operational. If inlet valve is closed, air will only divert once inlet
valve is open. (Refer to OPERATION on page 20)
- Check air valve control box is connected correctly.
FURTHER ADVICE
Should the Nexus Automatic System not function as set out in this manual,
more fault finding information can be found on our website:
www.evolutionaqua.com
28
LOCATION OF FUSES
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WARRANTY
This product is guaranteed against defects in material and workmanship for 1 year from the date of
purchase, under normal usage. The guarantee DOES NOT APPLY in case of improper use, negligence, lack
of maintenance or accidental damage to the Nexus Automatic System. If the Nexus Automatic System fails
due to a manufacturing fault within this period it will be either repaired or replaced free of charge. Liability
is limited to replacement of the faulty product only; no other costs will be reimbursed. This guarantee is not
transferable and does not affect your statutory rights. This guarantee does not confer any rights other than
those expressly set out above. This guarantee does not cover the Nexus filter this system is installed on.
Do not attempt to tamper with the Nexus Automatic System components, other than as directed in this
instruction manual, as doing so will invalidate the warranty.
The manufacturer or supplier shall not be responsible, or held liable for any damages caused by defective
components or materials of this product; or for loss incurred by interruption of service; or any consequential/
incidental damages and expenses arising from the production, sale use or misuse of this product or any
other consequential loss.
Any warranty claim must be accompanied by a valid, dated proof of purchase.
Evolution Aqua and its dealers shall not be held liable for any loss of fish, plants or any other livestock as a
result of any failure or defect of this product.
The installation and use of your product outside of our recommendations as printed in this manual may also
void the warranty.
Should the Nexus Automatic System not function as set out in this manual,
more fault finding information can be found on our website:
www.evolutionaqua.com
Evolution Aqua Ltd
Evolution House
Kellet Close
Wigan
Lancashire
United Kingdom
WN5 0LP
t: +44 (0) 1942 216554
f: +44 (0) 1942 418489
e: info@evolutionaqua.com
w: www.evolutionaqua.com
29
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WARRANTY PROVISIONS
This product is guaranteed against defects in material and workmanship for 1 year from the date
of purchase, under normal usage. The guarantee DOES NOT APPLY in case of improper use,
negligence, lack of maintenance or accidental damage to the Nexus Automatic System. If the
Nexus Automatic System fails due to a manufacturing fault within this period it will be either
repaired or replaced free of charge. Liability is limited to replacement of the faulty product only;
no other costs will be reimbursed. This guarantee is not transferable and does not affect your
statutory rights. This guarantee does not confer any rights other than those expressly set out
above. This guarantee does not cover the Nexus filter this system is installed on.
Do not attempt to tamper with the Nexus Automatic System components, other than as
directed in this instruction manual, as doing so will invalidate the warranty.
The manufacturer or supplier shall not be responsible, or held liable for any damages caused by
defective components or materials of this product; or for loss incurred by interruption of service;
or any consequential/incidental damages and expenses arising from the production, sale use or
misuse of this product or any other consequential loss.
Any warranty claim must be accompanied by a valid, dated proof of purchase.
Evolution Aqua and its dealers shall not be held liable for any loss of fish, plants or any other
livestock as a result of any failure or defect of this product.
The installation and use of your product outside of our recommendations as printed in this
manual may also void the warranty.
Should the Nexus Automatic System not function as set out in this manual,
more fault finding information can be found on our website: www.evolutionaqua.com
TEL: 01942 216554 FAX: 01942 418 489
WARRANTIES - EVOLUTION AQUA - KELLET CLOSE - WIGAN - LANCASHIRE - WN5 0LP - TEL: 01942 216554
Downloaded from www.watergardeningdirect.com
Evolution Aqua Ltd
Evolution House
Kellet Close
Wigan
Lancashire
United Kingdom
WN5 0LP
t: +44 (0) 1942 216554
f: +44 (0) 1942 418489
e: info@evolutionaqua.com
w: www.evolutionaqua.com
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