Graf SILENTIO Operation manual

User information
“SILENTIO” system control
Fill level measuring device and drinking water supply
Article – No.: 351022
Otto Graf GmbH Carl- Zeiss- Str. 2- Tel.: [phone]
Kunststofferzeugnisse D 79 331 Teningen Fax: [phone]
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VEINLAND Gmb
[email protected]

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1: LED for power supply display
2: Display
3: LED for drinking water operation
4: LED for faults and malfunction
5: Operating buttons
6: Serial number
7: Lower cover of the System Control
8: Coupling for data lead
9: re-stamped breakthrough for upgrading features
10: Mains power coupling
11: The mains circuit breaker of the system controls are under this cover.
Picture 1: View of equipment
VEINLAND Gmb
[email protected]

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12: Data cable
13: screw cap 3
14: Connection of the data cable is reverse protected.
15: connect white cable here
16: connect red cable here
17: data cable terminal
18: screw cap 2
19: screw cap 1
20: active measuring length
22: Stainless steel probe
23: Tank floor
24: Screws must be blunted ! (danger of injury)
25: overflow
26: Tank side in dome
27: Sensor
28: Sensor control box ( measurement pick-up )
Picture 2: Sensor assembly

1. Safety Insructions
Please read carefully the safety and instruction manual before using this device!
Follow all instructions that are in the User Guide (Manual) to achieve the optimal
performance. Please keep these safety and operating instructions safe for further
use.
General Safety Instructions / Symbol Explanation
- refers to an information
- means warning and indicates a special situation
- indicates a hazardous situation which may cause to heavy or
serious injury or even death
1.1 Personnel
The installation, commissioning and dismantling of the device must be done only by
trained and authorized personnel. During installation, it is necessary to pay attention
to the safety regulations defined by the user and local laws and rules.
1.2 Proper Use of the Device
The equipment is designed exclusively for the intended purpose specified in the manual.
Any other use and / or misuse of the device can lead to unpredictable risks including death
and causes the loss of all the claims against the manufacturer.
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1.3 Limitation of the Liability
The manufacturer would not take over any liability for damages resulting from:
- the usage of the device by untrained and unauthorized personnel,
- use of device for not intended purpose
- opening and/or manipulation of the device
- not following the manual and safety instructions
1.4 Electric Current
!!Danger of life from electric current!!
Direct contact to the parts of the device will cause an electric shock. In case of
damage to the insulation, the device must be switched off immediately and the
damaged area must be de-energized.
While maintaining on the device, ensure that the power supply is off at all times
and make sure the device is de-energized.
1.5 Electrical Shock
If objects (e.g. hairpins, needles or coins) or liquids fall into the device, it can
cause life threatening electrical short-circuits, which can lead to fire. The user has
to make sure that above mentioned objects, especially made of metal and/ or
liquid things, will not fall in to the device intentionally or unintentionally.
1.6 Safety Operations
The operation and use of the device is to be done by instructed and authorized
personnel only.
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1.7 Power Supply
The equipment may only be operated with the operating voltage of 230V AC specified in
the user information.
A residual current circuit breaker (RCD) with a rated residual current not greater than
30mA must be provided, because it is a socket outlet circuit which is intended for use by
laypersons and for general use. The maximum permissible rated residual current for per-
sonal protection is 30mA.
For correct dimensioning of the residual current circuit breaker (RCD), the informa-
tion provided by the manufacturer of the pump you are using must be observed. A
residual current circuit breaker (RCD) of type B (universal current sensitive) is usually
sufficient. In some cases, however, a type F (mixed frequency sensitive) may also be
required.
Make sure to also observe the country-specific regulations.
1.8 Cable Connection
When installing the cable connections, the user needs to pay attention to the
safety regulations. Always pay attention to the connection to the protective earth
ground! ay attention when connecting with other devices, that those have to be
of the same earth potential (same heavy current/voltage side).
1.9 Ventilation
The equipment must be installed in so that good ventilation to the device is ensured. Do
not put any covering objects on the device, such as newspapers, books or towels.
1.10 Water and Moisture
The device is not allowed to operate in close vicinity of electrical conductive liquids
or moist areas. It is not allowed to place any liquid things on the device or in the
nearby area of the device.
Attention: Danger of Electric Shocks!
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1.11 Temperature and eat
The operating temperature of the device is defined in the specifications. The device must
not be placed near things which produce heat such as to blowers, heaters, furnaces or
other devices.
1.12 Opening the Device
Disconnect the mains plug before opening the device!
There is a risk of electrical shock when touching the parts inside the device. It is
not permitted to make any changes in the device.
1.13 Cleaning
Do not use any volatile solvents such as alcohol, diluents, gasoline etc. to clean
the device. Only use a dry, clean cloth.
1.14 Unusual Smell
If any unusual smoke or smell occurs, immediately switch off of the device and
remove it from the main power supply! Contact your dealer or the manufacturer.
1.15 Fuses
The replacement of the fuses in the device is only permitted by trained and
authorized technical staff.
The change of the fuses is only allowed when the device is switched off and is re-
moved from the main power supply. Otherwise there is a risk of electric shocks.
The security functions and safety values are mentioned in the manual. The guar-
antee for this equipment will expire in case of using other fuses than those speci-
fied in the manual.
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1.16 Repairing
The user is not allowed to perform the maintenance work by himself, except for those
specified in the manual. All maintenance and repair work must be done by trained and au-
thorized technical personnel.
1.17 Important notes of safety
Please, read and follow safety instructions carefully before assembly or using the
device!
The mounting position must be suitable for a safe and secure routing and connecting of
the cables. The cables may not be damaged or squeezed by some other inappropriate ob-
jects. lan the mounting position so that the optional plug in power supply unit can be
reached and removed easily from the socket should the situation dictate!
lease ensure that unattended children may not play with the equipment or cables.
We accept no responsibility for damage caused through not following this user information
or through improper handling of the equipment.
2. Description and intended use
The “SILENTIO” is an electronic water management control system. It has been de-
veloped especially for rain water usage systems. The device is intended for use in a do-
mestic environment. It can be used with a wide variety of tank systems. Tanks made from
metal or steel reinforced cement may only be used when the following conditions have
been correctly followed. Metal tanks lead to faulty readings. Helpful is to assemble the
device so that the sensor is as far as possible from the metal sides so for example, in the
centre of a cylindrical tank.
The device must be operated on a circuit which is protected by an RCD for personal pro-
tection (see point 1.7).
The operation of the system control is to be checked at regular intervals (at
the latest every 4 weeks).
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3. Description
The system controls offer an easy to use guide for the switch programming. Using an LCD
display the fill measurement is shown in 1 % stages (in relation to the height of the
tank).The sensor operates with a 12 volt supply. All programmed values such as the tank
height are retained after disconnection of the power supply or after a power-cut.
Performance features:
–Fill level measurement readout in 1% steps and with an additional bar type indicator
–In 1% steps freely variable choice of the switching points for the drinking water refill
–Automatic flushing of the system (choice of intervals in day and time are possible)
–Dialogue oriented user guidance (choice of language)
–Equipment indication using 3 additional LED
–Supervision of the measurement pick-up and the sensor
–Error indications in plain text
Technical data:
Control electronics Measurement sensors
Operating voltage : 230V AC Measurement voltage : 12V DC
Fused : 50mA slow-blow Measuring frequency : (0,2-20)kHz
ower consumption : 3VA Data cable length : 20m (ma . 50m)
Tank height : 3m (optional 6m)
Measurements [mm] : 155x165x90 Measurements [mm] : 90x80x50
Additional pumps connection Filter cleaning valve connection
Operating voltage : 230V AC Operating voltage : 230V AC
ump capacity : max. 850VA Output current : max. 1A
Only the control electronics in the device are protected by the fuse. Valves and
pump connections are not protected. These are protected only by the mains sup-
ply via the mains fuse.
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The yellow LED indicating “Drinking water operation” is lit as soon as the valve
switches over to the mains supply. The user is made aware that the system now
uses water from the mains supply. The red LED for “Faults and malfunctions” is lit
as soon as the system identifies a fault. The display will then show a warning that
describes the cause of the fault in plain text.
4. Assembly
4.1 Control system
The electric mains supply plug acts also as the ON/OFF switch.
Before opening the equipment pull the plug out from the mains socket!
The system control is integrated as standard in the basic „SILENTIO“ device from the com-
pany Graf. Caution: Always remove the plug from the mains socket before opening the
lower cover [7] of the system control housing!
4.2 Connection sensors and data cable
The sensor electronics comprise of a stainless steel probe [22] with a red and a white
connecting cable [27] and the sensor measurement pick-up [28].
1. Now the sensor measurement pick-up [28] (cover removed) should be installed on
the tank wall (preferably in the man hole shaft of the Graf synthetic tank). The
location of the mounted sensor pick-up should be between 10 and 15 cm above the
overflow [25]. The enclosed screws should be used to secure the device. After fully
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Picture 3: Sensor technology