Oase ProfiClear Premium Compact-M EGC User manual

47627/11 16 MH
ProfiClear Premium Compact-M EGC
47627_GA_ProfiClear_Premium_Compact_EGC_A4_end_. 24.11.16 12:08 Seite 2

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2
A
ProfiClear0176

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ProfiClear0177
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ProfiClear0172

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ProfiClear0112
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BTC0027

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ProfiClear0167 ProfiClear0168
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ProfiClear0169
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ProfiClear0170

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ProfiClear0171
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OUT
InScenio
EGC Controller
EGC OUT
<Device 1> <Device n>
EGC IN OUT
max. 330 ft
72385
EGC IN
max. 2.0 Nm
(max. 18 lb-in)
max. 10 devices
EGC0009
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EGC0003
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ProfiClear0166

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BTC0031
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PrifiClear0083
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BTC0025

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ProfiClear0084
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ProfiClear0085
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BTC0023 BTC0024

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ProfiClear0178
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WARNING
►This unit can be used by children aged 8 and above and by persons with reduced
physical, sensory or mental capabilities or lack of experience and knowledge if they
are supervised or have been instructed on how to use the unit in a safe way and
they understand the hazards involved.
►Do not allow children to play with the unit.
►Only allow children to carry out cleaning and user maintenance under supervision.
►Ensure that the unit is fused for a rated fault current of max. 30 mA by means of a
fault current protection device.
►Only connect the unit if the electrical data of the unit and the power supply
correspond. The unit data is to be found on the unit type plate, on the packaging or
in this manual.
►Possible death or severe injury from electrocution! Before reaching into the water,
disconnect all electrical units in the water from the mains.
►A damaged connection cable cannot be replaced. Dispose of the unit.

- EN -
Questions, problems, missing parts?
Before returning to your retailer, call us at 1-866-627-3435, 8 a.m.-6 p.m., EST, Monday-Friday, or email
us at [email protected]. Or visit our website at www.oase-livingwater.com
11
Table of Contents
1Information about this operating manual...........................................................................................13
1.1Warnings used in these instructions .........................................................................................13
1.1.1Warnings.......................................................................................................................13
1.2Cross-references used in these instructions.............................................................................13
2Safety information .............................................................................................................................13
2.1Electrical connection .................................................................................................................13
2.2Danger for persons with pacemakers .......................................................................................14
2.3Safe operation...........................................................................................................................14
3Product Description...........................................................................................................................14
3.1Intended use .............................................................................................................................14
3.2Unit configuration ......................................................................................................................15
3.3Function description..................................................................................................................16
3.4Easy Garden Control System (EGC) ........................................................................................16
4Installation and connection................................................................................................................16
4.1Fitting the filter container...........................................................................................................17
4.2Connecting the drum filter.........................................................................................................18
4.2.1Information regarding pipes..........................................................................................18
4.2.2Connecting the inlet......................................................................................................18
4.2.3Fitting the UVC clarifier.................................................................................................18
4.2.4Connecting the coarse dirt outlet..................................................................................19
4.2.5Connecting the dirt outlet..............................................................................................19
4.3Connecting the control system with EGC box ..........................................................................19
4.3.1Connecting the control system .....................................................................................19
4.3.2Connecting the EGC box..............................................................................................19
4.3.3Connecting an additional EGC compatible unit............................................................20
4.4Installing the control system with EGC box ..............................................................................20
4.5Installing the capacitor box .......................................................................................................20
4.6Connecting an external aerator pump ......................................................................................20
5Commissioning/start-up ....................................................................................................................21
5.1Order of starting up steps .........................................................................................................21
5.2Adjusting the level detection device..........................................................................................22
6Operation...........................................................................................................................................23
6.1Control system overview...........................................................................................................23
6.1Switching ON/OFF ....................................................................................................................23
6.2Operating modes ......................................................................................................................24
6.1Manual cleaning........................................................................................................................24
6.1Settings in the menus ...............................................................................................................24
6.1.1 CL : Cleaning time "Cleaning".........................................................................................24
6.1.2 EC : Extended cleaning time "Extra Cleaning"................................................................25
6.1.3 In : Time-dependent cleaning "Interval" .........................................................................25
6.1.4 E7 : Pump status detection .............................................................................................26
6.2Reading out the number of cleaning cycles..............................................................................26
6.2.1Cleaning cycles in 24 hours..........................................................................................26
6.2.2Total cleaning cycles ....................................................................................................27
6.3Loading default settings............................................................................................................27
6.4System messages.....................................................................................................................28
7Remedy of faults ...............................................................................................................................30

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8Maintenance and cleaning ............................................................................................................... 31
8.1Cleaning the device.................................................................................................................. 31
8.2Regular tasks ........................................................................................................................... 31
8.3Cleaning the entire filter system............................................................................................... 32
8.4Cleaning the rinsing device...................................................................................................... 32
8.5Cleaning the screen element ................................................................................................... 32
8.5.1Removing/fitting a screen element .............................................................................. 32
8.5.2Decalcifying the screen elements................................................................................ 32
8.6Removing/fitting the filter drum ................................................................................................ 33
7.1Cleaning the rinsing pump ....................................................................................................... 33
7.2Replacing the rinsing pump ..................................................................................................... 34
8.7Replace the aerator rod ........................................................................................................... 34
9Storage/overwintering ...................................................................................................................... 34
10Wear parts........................................................................................................................................ 35
11Disposal............................................................................................................................................ 35
12Spare parts....................................................................................................................................... 35
13Technical data.................................................................................................................................. 36
Symbols on the unit.................................................................................................................................. 91

- EN -
Questions, problems, missing parts?
Before returning to your retailer, call us at 1-866-627-3435, 8 a.m.-6 p.m., EST, Monday-Friday, or email
us at [email protected]. Or visit our website at www.oase-livingwater.com
13
REMINDER
CALL 1-866-627-3435
BEFORE RETURNING TO STORE.
Questions, proble ms, missing parts?
Before returning to your retailer, c allus at 1-866- 627-3435, 8 a.m.-6 p.m., EST, Monday-Friday , oremail
us at customercar e@oase-livingwater .com. Or visit our website at www.oase-li vingwater.c om
1 Information about this operating manual
Welcome to OASE Living Water. You have made a good choice by purchasing this product ProfiClear
Premium Compact M EGC.
Prior to commissioning the unit, please read the instruction manual carefully and fully familiarise yourself
with the unit. Ensure that any work on or with this unit is carried out according to this manual.
Adhere to the safety information for the correct and safe use of the unit.
Keep these instructions in a safe place. Please also hand over the instructions when passing the unit on
to a new owner.
1.1 Warnings used in these instructions
1.1.1 Warnings
The warning information is categorised by signal words, which indicate the extent of the hazard.
WARNING
►Indicates a possibly hazardous situation.
►Non-observance may lead to death or serious injuries.
NOTE
Information for the purpose of clarification or for preventing possible damage to assets or to the
environment.
1.2 Cross-references used in these instructions
A reference to a figure, e.g. figure A.
Reference to another section.
2 Safety information
2.1 Electrical connection
►Electrical installations must meet the national regulations and may only be carried out by a qualified
electrician.
►A person is regarded as a qualified electrician if, due to his/her vocational education, knowledge and
experience, he or she is capable of and authorised to judge and carry out the work commissioned to
him/her. This also includes the recognition of possible hazards and the adherence to the pertinent
regional and national standards, rules and regulations.
►For your own safety, please consult a qualified electrician.
►Switch off all units in the aquarium or disconnect the power plugs of all units before reaching into the
water.
►Only connect the unit to a correctly fitted socket.
►Extension cables and power distributors (e.g. outlet strips) must be suitable for outdoor use (splash-
proof).
►Protect the plug connection from moisture.

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2.2 Danger for persons with pacemakers
►The container cover contains a magnet with a strong magnetic field that may affect the operation of
pacemakers or implantable cardioverter defibrillators (ICDs). Always keep magnets at least 20 cm
away from implanted devices.
2.3 Safe operation
►Never operate the unit if the housing is defective!
►Never operate the unit if an electrical cable is defective!
►Never carry or pull the unit by the electrical cable.
►Route cables such that they are protected from damage and do not present a tripping hazard.
►Never carry out technical changes to the unit.
►Only carry out work on the unit that is described in this manual. If problems cannot be overcome,
please contact an authorised customer service point or, if in doubt, the manufacturer.
►Only use original spare parts and accessories for the unit.
►Disconnect the unit from the power supply during thunderstorms.
►Overvoltage in the mains could lead to operating malfunctions of the unit. For information, please
refer to chapter "Remedy of faults".
►Do not breath in the spray from the rinsing device. The spray may contain harmful bacteria. When
the container cover is lifted up, the rinsing device continues operating.
3 Product Description
A
The filter system must be installed above the water level of the pond. A filter pump pumps the dirty pond
water out of the pond into the filter system. The clean water is returned to the pond through a pipe via
gravity.
Advantages of the pump fed system:
►Minimal installation work required
►System can be easily extended
►Simple upstream connection of UVC clarifiers.
►Perfectly tailored to the AquaMax Eco Premium filter pump from OASE
3.1 Intended use
ProfiClear Premium Compact M EGC, referred to as "unit", may only be used as specified in the
following:
►For cleaning garden ponds.
►Operate in accordance with instructions. (→ Technical data)
The following restrictions apply to the unit:
►Only operate with water at a water temperature of 39.2 °F … 95 °F (+4 °C … +35 °C).
►Never use the unit with fluids other than water.
►Do not use for commercial or industrial purposes.
►Not suitable for salt water.
►Never run the unit without water.
►Do not use in conjunction with chemicals, foodstuff, easily flammable or explosive substances.

- EN -
Questions, problems, missing parts?
Before returning to your retailer, call us at 1-866-627-3435, 8 a.m.-6 p.m., EST, Monday-Friday, or email
us at [email protected]. Or visit our website at www.oase-livingwater.com
15
3.2 Unit configuration
C Description
1 Container cover
2 Signal box with level detection device (3) and temperature probe (7)
The signal box is connected to the control system (30, 32)
3 Level detection device
Signals the water level in the filter system
4 Rollers for guiding the filter drum
6 Filter drum with six screen elements
screen elements for coarse dirt down to 80 µm in size (also optionally available with 60 µm)
7 Temperature probe
monitors the water temperature
8 Air hose ⅜in (9 mm)
9 Hel-X 13 biomedia in Moving Bed filter chamber
10 Outlet 4 in (DN 110)
11 Meshed tube
Prevents the Hel-X biomedia from being flushed out
12 Aerator rod (two provided)
13 Rinsing pump for supplying the rinsing device (24)
14 Dirt outlet DN 75 with slide valve and supplied adapter DN 75 / 3 in.
with slide valve
15 2 × adapters, 2 × 30° inlet bend with union nut for connection of the UVC clarifier Bitron to 1½ in (38 mm) connections
(16)
16 Connection set for connecting filter pumps, 1 × 1½ in ( 38 mm) hose connector, 1 × 2 in ( 50 mm) hose connector, 1 ×
union nut for hose connector, 1 × 40 … 60 mm hose clip, 1 × 90° (2 in) connection bend, 1 × union nut for connection
bend, 1 × cover cap (with 1 × non-return valve, 1 × flat seal 60 mm × 47 mm × 3 mm), 1 × flat seal (2 in)
56 mm × 43 mm × 3 mm
17 2 × 1½ in ( 38 mm) connection, closed with sealing plugs
Optional connection for UVC clarifier Bitron
18 1 × 2 in ( 50 mm) connection for connecting the filter pumps
21 4 in (DN 110) dirt outlet for coarse dirt
22 Drum motor for filter drum
the motor is connected to the control system (30, 31)
23 Dirt channel
collects the coarse dirt and rinsing water from the screen elements (6)
24 Rinsing device
sprays water at high pressure onto the screen elements (6) to rinse off the coarse dirt
25 Grease for the drum seal
27 Adapter from ⅜in to ⅛in (9 mm to 4 mm)
28 Tee
29 2 × cable binders for fastening the air hoses to the tee
30 Control system with EGC box
Allows integration with cables into an EGC network.
31 Plug for connecting the drum motor
32 Socket for connecting the signal box
33 Mains connection cable
34 Socket for connecting the capacitor box of the rinsing pump
35 Fuse holder
Fuse protection of the control system with 5 × 20 mm, T16A, 250 V safety fuse
36 2 × caps, cap nuts for fixing the EGC box when mounting it on the container wall
37 Capacitor box for the rinsing pump
38 Plug for connecting the control system (34)
39 Plug for connecting the rinsing pump

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3.3 Function description
ProfiClear Premium Compact combines the removal of coarse dirt particles and biological filtration in
one unit. Screens (80 μm) separate all types of dirt particles before the water reaches the biological
filtration. By separating the suspended solids, the filter removes most of the nutrient matter from the
water. Following this mechanical filtration, the Hel-X biomedia in the moving bed system carry out the
biological filtration of the pond water.
The control system with an integrated micro-controller system automatically controls and monitors the
filtration process. The automatic self-cleaning function can be individually adjusted to meet the user's
requirements.
Hel-X bio-elements ensure the effective break-down of nutrients and contaminants in the water. Over
the course of time, the surface of the bio-elements is colonised by bacteria responsible for nitrification
and denitrification. They clean the water before it leaves the container. The fluidized bed process (action
of the water flow and oxygen supply) and the bypass technology ensure optimum movement of the Hel-
X bio-elements even at high flow rates. The biological system is self-cleaning and does not need
additional maintenance.
40 l of Hel-X biomedia can break down the nutrients of approx. 9.5 oz (270 g) of fish food per day,
given optimum conditions. If required, this can be increased to 60 l, i.e. 14.4 oz (408 g) of fish
food per day.
The development of the micro-organisms in the filter takes several days. It can be accelerated by adding
biological starter bacteria.
BioKick contains millions of active micro-organisms. They start cleaning the water immediately. The
biology in the filter is fully developed within only a few weeks.
Nitrification is the process by which ammonia/ammonium and nitrite are removed from the water by
special bacteria. These substances can build up in the water, for example as a result of fish food and
fish excrement. Ammonia is particularly toxic for fish.
Nitrification takes place in two steps. In the first step, the bacteria convert the ammonia/ammonium into
nitrite. In the second step, other bacteria convert this nitrite into nitrate, which although non-toxic,
promotes the growth of algae. Both steps use oxygen that is taken from the water.
Denitrification is the process by which nitrate is broken down to gaseous nitrogen. In the event of a low
oxygen content, the bacteria use the nitrate nitrogen as a source of oxygen and convert it into
atmospheric nitrogen. Atmospheric nitrogen cannot be used by algae and aquatic plants.
3.4 Easy Garden Control System (EGC)
This product can communicate with the Easy Garden Control-System (EGC). EGC allows convenient
control in the garden and pond via smartphone or tablet, and ensures maximum convenience and
reliability. Information about EGC and the possibilities it offers can be found at www.oase-
livingwater.com/na/egc.
4 Installation and connection
Important: If the planned installation deviates significantly from the recommendations contained in this
manual:
►Have your specialist retailer check whether all technical specifications were adhered to. This is
crucial for a problem-free operation.

- EN -
Questions, problems, missing parts?
Before returning to your retailer, call us at 1-866-627-3435, 8 a.m.-6 p.m., EST, Monday-Friday, or email
us at [email protected]. Or visit our website at www.oase-livingwater.com
17
4.1 Fitting the filter container
WARNING
Electrical current may cause death or severe injuries.
►Ensure that the unit is installed in a flood protected position at a distance of at least 6.6 ft (2 m) from
the water.
CAUTION
Due to the high weight of the unit, spinal injuries or crushing of limbs is possible when carrying the unit.
The unit weighs more than 55 lbs (25 kg). (→ Technical data)
►Use suitable lifting equipment (e.g. special load handles).
►Have the aquarium and cabinet carried by several persons to spread the load and protect against
spinal injuries.
►Protect limbs from crushing.
►Do not transport the unit when it is filled.
The filter system operates day and night and causes rinsing noises during the automatic cleaning
cycles.
►Please protect the general public and your neighbourhood from noise disturbance and comply with
the statutory noise regulations.
►Enclose the filter system such that the enclosure effectively absorbs the noises.
►Select the location of the filter system in order to avoid noise disturbance.
A, B
Plan the installation of the filter system. With careful planning, taking the ambient conditions into
account, you will obtain optimum operating results.
The following conditions must be met:
►As the filter module is very heavy when filled, it must be placed on a suitable base (at least on slabs,
but preferably on a poured concrete base) to prevent it from subsiding.
►Horizontally align the base slab.
– The filter system must be positioned horizontally (max. deviation ±0.2 in (±5 mm)).
– Tip: Use commercially available concrete slabs, each measuring 19.7 in × 19.7 in
(500 × 500 mm). One concrete slab is required for the operation of the filter system on its own;
two concrete slabs are required for operation of the ProfiClear Compact/Classic pump chamber
module.
►Plan sufficient space for carrying out cleaning and maintenance work.
►Drain the dirty water into the sewer system or far enough away from the pond so that it cannot flow
back into the pond.
– If the coarse dirt and dirty water both run into the same pipe, it is important to use at least 4 in
(DN 110) pipes.
►Position the inlet in the pond (e.g. via a stream or waterfall) so that it is lower than the outlet of the
filter system.
A water course or waterfall guarantees optimum water return to the pond. In this way, the filtered pond
water is enriched with oxygen before it is returned to the pond.
System specific requirements
►Horizontally align the base slab.
►Position the inlet in the pond (e.g. via a water course or waterfall) so that it is lower than the outlet of
the filter system.

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4.2 Connecting the drum filter
4.2.1 Information regarding pipes
►Use suitable pipes. For the connection of inlets and outlets 4 in (DN 110), flexible coupler are better
suited than PVC plumbing fittings.
►Do not use any right-angled bends. Bends with a maximum angle of 45° are very efficient.
►Glue plastic pipes to ensure a permanent and reliable joint or use socket joints with clips to stop
them from coming apart.
►Standing water in pipes can freeze when there is severe frost and cause pipes to burst. For this
reason, lay the pipes and hoses with a gradient of 6 in/10 ft (50 mm/m) to ensure that they can drain.
4.2.2 Connecting the inlet
The filter system is equipped with a 2 in (50 mm) or 1.5 in (38 mm) connection for the filter pump.
►In addition, you can connect a UVC clarifier. (→ Fitting the UVC clarifier)
►The maximum flow rate is 3300 gph (12500 l/h).
►It is necessary to remove a screen element to access the internal connection. (→ Removing/fitting a
screen element)
►Leave the connection for the filter pump on the container closed if it is to remain unused.
How to proceed:
A, D
1. Unscrew the cover cap and remove the non-return valve and flat seal.
2. Screw the union nut with 2 in (50 mm) or 1.5 in (38 mm) hose connector and flat seal or non-return
valve onto the connection. Hand-tighten the union nut.
– Use the flat seal if continuous operation of the pump is planned, the non-return valve for interval
operation.
3. Slip the 2 in (50 mm) hose of the filter pump onto the hose connector and secure with a hose clip.
4. Screw the union nut with the 90° connection bend (2 in) and the seal onto the connection on the
inside of the container. Hand-tighten the union nut.
– Ensure that the connection bend points downwards.
– A correctly positioned connection bend prevents unintended overflow (emptying of the pond) and
also serves to reduce noise emissions.
4.2.3 Fitting the UVC clarifier
The Bitron UVC clarifier is fitted to the drum filter module. The max. flow rate of the Bitron and the
overall system is 3300 gph (12500 l/h).
►It is necessary to remove a screen element to access the sealing plugs. (→ Removing/fitting a
screen element)
►When two filter pumps are operated, one filter pump is connected to a 2 in (50 mm) inlet, the
other to the Bitron. (→ Connecting the inlet)
If two filter pumps are to be connected, they must always be operated simultaneously or be equipped
with a non-return valve.
How to proceed:
E
1. Undo the screws with a screwdriver and remove the sealing plugs.
2. Guide the outlet sockets of the Bitron with flat seals through the holes in the container wall.
3. Screw the adapters onto the outlet sockets and hand-tighten.
4. Screw the 30° inlet bends with cap nuts onto the adapters and hand-tighten.
– Position the inlet bends so that they are pointing downwards.
– Correctly positioned inlet bends prevent unintended overflow (emptying of the pond) and also
serve to reduce noise emissions.
5. Connect the Bitron to the filter pump in accordance with the operating manual.

- EN -
Questions, problems, missing parts?
Before returning to your retailer, call us at 1-866-627-3435, 8 a.m.-6 p.m., EST, Monday-Friday, or email
us at [email protected]. Or visit our website at www.oase-livingwater.com
19
4.2.4 Connecting the coarse dirt outlet
F
The coarse dirt that collects in the dirt channel drains away via the 4 in (DN 110) coarse dirt outlet (top
outlet on the container on the inlet side).
►For easiest connection of the 4 in (DN 110) outlet, a flexible coupler is better suited than a PVC
plumbing fitting.
►Connect a suitable 4 in (DN 110) pipe and drain the dirty water into the sewer system.
4.2.5 Connecting the dirt outlet
The water in the container can be drained via the dirt outlet with the slide valve at the bottom of the
container when required (for cleaning, repair, winter storage).
►Connect a suitable pipe using the DN 75 / 3 in adapter and drain the dirty water into the sewer
system.
How to proceed:
G
1. Remove the cap nuts and push the dirt outlet onto the connection.
2. Fit and tighten the cap nuts, tighten the hose clip.
3. Use the DN 75 / 3 in adapter to connect the pipe.
Connect the 3 in (DN 75) pipe with the 4 in (DN 110) pipe for coarse dirt and drain the dirty water into
the sewer system through the 4 in (DN 110) pipe. This will ensure that the dirty water pipe will be
conveniently flushed out with sufficient pressure.
4.3 Connecting the control system with EGC box
4.3.1 Connecting the control system
The cable harness contains the connection cables of the signal box, the drum motor and the rinsing
pump. These connection cables have to be connected, the EGC box is already connected.
H
►Connect the three connectors of the cable harness to the sockets of the control system and the
capacitor box. Hand-tighten the union nuts.
– The connections are designed to prevent reverse polarity.
– First flood the container with water, then connect the control system to the mains voltage/power
supply.
4.3.2 Connecting the EGC box
Integration of the filter system into the EGC network is optional and not necessary for operation.
(→ Easy Garden Control System (EGC))
The Connection Cable EGC cable is required for connecting the EGC box.
The correct fastening of the plug connector is important for a secure connection and an interference-free
EGC network.
How to proceed:
H, K, L
1. Remove the protection cap from the unit.
2. Fit the plug connector and secure with the two screws (max. 2.0 Nm (max. 18 lb-in)).
– Ensure that the rubber seal is clean and fits exactly.
– Replace the rubber seal if damaged.
3. Remove the protection cap from EGC-OUT of the last unit in the EGC network, fit the terminal
resistor EGC and secure it with the two screws (max. 2.0 Nm (max. 18 lb-in)).
– Ensure that the terminal resistor EGC instead of an EGC connection cable is installed on EGC-
OUT of the last unit in the EGC network to ensure that the EGC network is closed off properly.
– The scope of delivery of InScenio FM-Master EGC or InScenio EGC Controller each contains a
terminal resistor EGC.

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20
4.3.3 Connecting an additional EGC compatible unit
An additional EGC compatible unit can be connected to the EGC box.
►Ensure the correct connection. (→ Connecting the EGC box)
How to proceed:
K, L
1. Remove the protection cap from EGC-OUT on the EGC box and fit the plug connector of the
EGCConnection Cable.
2. Remove the protection cap from EGC-IN on the additional unit and fit the other plug connector of the
EGC Connection Cable.
3. Remove the protection cap from EGC-OUT on the additional unit, fit the terminal resistor and secure
it with the two screws (max. 2.0 Nm (max. 18 lb-in)) or connect an additional EGC unit.
4.4 Installing the control system with EGC box
►Install the control system at a minimum distance of 6.6 ft (2 m) from the pond.
►Protect the control system from direct sunlight.
►The control system is splash-proof and may be exposed to rain.
How to proceed:
I
1. Either attach the control system and EGC box to the container wall or use threaded hooks to mount
it in different position.
2. If the EGC box is attached to the container wall, fit both caps onto the cap nuts.
– The caps fix the EGC box in place.
4.5 Installing the capacitor box
J
The capacitor box is connected to the container wall. If the control unit is suspended from the opposite
container wall, the capacitor box must also be installed there.
4.6 Connecting an external aerator pump
►Connect the aerator rods in the container to an external aerator pump.
OASE recommends: OASE AquaOxy 450 pond aerator.
How to proceed:
M
1. Connect the hose from the external aerator pump to the air connection and insert the air connection
in the container.
– For thinner ⅛in (4 mm) hoses, use the ⅛/⅜in (4/9 mm) adapter and secure the connections
with cable ties, if necessary.
During the run-in period, only use an air volume of 264 gph (1000 l/h) to circulate the Hel-X biomedia.
Excessive turbulence delays the initial colonisation of micro-organisms.