Votronic 20 K-WC User manual

Tank Electrode 20 K-WC Tank Height 12 - 24 cm, 12 V and 24 V Order-No. 5555
The tank transmitter had been designed for precise level measuring of the feces tank cassette in campers,
caravans and boats, thus allowing foresight planning of the disposal.
Measurement of the level is effected fully-automatically without mechanically moving parts according to the
capacitive method of measurement, and it is transferred to the display unit via a three-core cable with plug-type
connector.
The electronic system is completely sealed and water-tight (IP67), and it is suitable for heavy-duty operation of
flushing the toilet cassette.
Tank measuring sensor, suitable and required for VOTRONIC tank displays, 1 piece per tank:
Tank Display Units: Order No. 12 V Order No. 24 V
Sewage Water Tank Display S 5313 5313
Feces Tank Display S 5315 5315
Info Panel Pro 5330 6330
Votronic VBS 2 Bus System All Types All Types
Votronic VPC System All Types All Types
Previous Votronic Tank Displays since 1987 All Types All Types
For remote level measurement the Tank Electrode
K-WC is installed directly at the cassette. It is suitable
for:
Fresh water (if applicable, please observe the
Guidelines for Drinking-Water Quality
DIN 2001-2)
Sewage water, grey water
Feces-Sewage Water
Plastic tanks, any material
Metal tanks (aluminium, steel, stainless steel,
etc.)
Adjustable to tank heights from 12 cm to
24 cm.
Functioning:
The level in the tank is measured capacitively. The
insulated stick (probe) and the surrounding water
form a kind of "capacitor", the value of which is
growing with the level, and which is measured by
the electronic system. The contact to the water as
"antipole" is effected by a stainless steel stick.
Brief Instruction:
1. Produce a mounting hole at the tank with Ø 38 mm (hole saw) and burr the hole.
2. Measure the clear tank height inside and set it at the scale.
3. Cut both measuring sticks to the measured length observing a clearance of 10 - 20 mm to tank bottom).
4. Reinsert the insulating cap on the insulated stick (burr it and observe the tightness).
5. Insert the delivered sealing, insert the tank transmitter from above into the mounting hole, insert the mounting
ring and fasten it using the enclosed 8 stainless steel screws.
6. Connect the delivered 3-pole tip jack to the display unit and install it at an easily accessible location in the vehicle's
mounting slot.
7. Shorten the connection cable of the transmitter to the desired length and connect the delivered 3-pole connector.
8. Insert the delivered, self-adhesive holding clip for the connector at a suitable location on the cassette (transport).
9. Ready for start-up.

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Preliminary Installation:
The tank electrode K-WC is designed for vertical installation at the tank top.
The installation place with inserted cassette should be chosen at the topmost location, mounting hole Ø 38 mm.
Mounting Plan
Now measure the tank height through the mounting hole (folding rule or similar) and shorten both stick probes to identical
height (metal saw, strong side cutter, bolt cutter).
It is important, that a clearance of at least 10-20 mm is left between tank bottom and probe ends, which is required
because of the up-and-down movements of the tank bottom and of the tank top during driving or formation of sludge etc.
Burr the sticks, and reinsert the insulating cap on the stick probe being insulated by the plastic pipe.
A thorough sealing between the insulating cap and the plastic pipe is decisive for proper operation of the tank electrode
K-WC!
How to set the adjuster tank height to "FULL" 100 %:
Example: The scale
indicates
the value
18 cm
tank height

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Configuration of Connections:
Colour Connection No. Tank Display Function Connection No. Plug-type Connector
White 5= Tank +(Plus) + Operating Voltage, from Display Unit Connection 53
Green 4= Tank Signal Measuring Signal to Display Unit Connection 4, 0…2.2 V 2
Brown 1= Battery - - Operating Voltage (Minus) or Body Ground, 11
Recommended cable cross-section for all cables: 0.5-1 mm²
The tank electrode K-WC is protected against any kind of reverse battery. It is recommendable to use connection cables of
different colours to avoid malfunctions due to mixed up connections.
Install the delivered 3-pole tip jack with inserted cassette at an easily accessible location in the vehicle's mounting slot and
establish the connections (screwable) to the display units.
Also with inserted cassette, the transmitter connection cable can now be shortened to a length, which is easy to handle.
How to connect the 3-pole connector to the transmitter:
The connector is equipped with self-contacting cutting-clamping contacts (solderless). Proceed according to the enclosed
instructions, paragraphs 1-6:
1. Push the female connector on the cable, strip the insulation of the cable 35-40mm. DO NOT strip the 3 single
conductors!
2. Insert the cable until the stripped insulation into the clamping part.
3. Open the small lateral flap, insert brown = 1 and bend it. Close flap. Now insert white in groove 3 end bend it,
insert green in groove 2 and bend it.
4. Not required (cable shield)
5. Not required (cable shield)
6. Press the cable clamp together and turn it into the plug housing until tongue/groove fits. Insert the cable clamp as
far as possible into the plug housing and screw on the female connector (in doing this, the contacts are
established).
As soon as the display unit has been installed according to the operating manual, the battery can be connected.
Start-up and Adjustment:
Set the measured tank height at the adjuster "Tank Height" on the display for 100 % "FULL".
The functions of the display can now be tested with several water levels in the cassette or in a bucket being filled with
water by withdrawing the tank electrode.
Fine adjustment of the set water depth can be corrected or changed at any time with full tank.
Final Installation:
Insert the delivered packing ring into the mounting hole and insert the tank transmitter from above into the mounting hole,
so that the packing ring is placed between the cassette and the casing flange of the transmitter. Now insert the mounting
ring and screw it down to the cassette using the 8 delivered stainless steel screws.
While handling the cassette, the connector plug is held and thus protected by the delivered clip. Place the self-adhesive
holding clip at a suitable location on the cassette.
In case of underfloor installation of the tank below the vehicle, the adjuster must be protected with a permanently elastic
sealant against aggressive environmental influences (de-icing salt etc.).
Tips and Tricks:
No reaction of display:
a. Wire 4 = Tank Signal Withdraw by way of trial and direct it to connection "5": (Plus):
The display should increase to 100 %! Otherwise:
b. Battery connection or fuse defective check!
c. Wire 5 =Tank Plus interrupted check!
d. Wire 4 = Tank Signal: Short-circuit to Minus / Ground check!
Constant display of 100 % on the display unit:
a. Wire 4 = Tank Signal Withdraw it and direct it to ground: Display must be empty!
b. Wire 1 = Battery Minus / Ground is interrupted or does not have any contact due to paint residues at the
body check!
c. The insulated stick probe is contacting water: The silicone cap is leaky or dropped off, the insulation of the cable probe
is damaged check!
Indication Errors:
a. Furring of the insulated stick probe by stuck solids in the feces tanks and sewage water tanks rinse tank!

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Safety Regulations and Appropriate Application:
The tank measuring sensor has been designed according to the valid safety regulations.
Application is only allowed, if the unit is in technically faultless condition, with protected board battery voltage of
the indicated value and only for measurement of water or hydrous media.
Never use the unit in locations where the risk of gas or dust explosion exists!
The unit is to be disconnected from any connection prior to execution of electrically welding or work on the electric
system.
Cables are always to be laid in such a way that damage is excluded. Observe to fasten them tightly.
Never lay 12 V (24 V) cables and 230 V mains supply cables into the same cable conduit (empty conduit).
Check live cables or leads periodically for insulation faults, points of break or loosened connections. Occurring
defects must be remedied immediately.
If the user is not able to draw from the manual, which characteristic values are valid for a unit or which regulations
are to be observed, a specialist is to be consulted.
The user/buyer is obliged to observe any construction and safety regulations.
The unit is not equipped with parts, which can be replaced by the user.
The warranty period is 36 months from the purchase date (against presentation of the sales slip or invoice).
The warranty will be void in case of any inappropriate utilisation of the unit, if it is used beyond the technical
specification, in case of improper operation or external intervention. We do not assume any liability for any
damage resulting hereof. The liability exclusion is extended to any service being executed by third, which has not
been ordered by us in writing. Service is to be effected exclusively by VOTRONIC Lauterbach.
Declaration of Conformity:
In accordance with the provisions of Directives 2014/35/EU, 2014/30/EU, 2009/19/EC, this
product complies with the following standards or normative documents:
EN55014-1; EN55022 B; EN61000-6-1; EN61000-4-2; EN61000-4-3; EN61000-4-4;
EN62368-1; EN50498.
The product
must not be
disposed of in
the household
waste.
The product is RoHS compliant.
It complies with the directive
2011/65/EU for Reduction of
Hazardous Substances in electrical
and electronic equipment.
Technical Data:
Operating Voltage: 12 V/24 V-DC Battery voltage (of the display)
Operating Voltage Range: 7...32 V
Current Consumption: 4...7 mA
Signal Output 0...100 % 0...2.2 V,
Measuring Method: capacitive, suitable for short-time and continuous operation
Tank Height, adjustable: 12…24 cm
Mounting Hole: 38 mm
Flange Diameter: 46.5 mm
Length Connection Cable: approx. 75 cm
Delivery Scope:
1 Pc. Tank Electrode 20 K-WC
1 Pc. Packing Washer
1 Pc. Mounting Ring
8 Pcs. Stainless Steel Screws 2.9 x 13 mm
1 Pc. 3-Pole Tip Jack with Locking Device
1 Pc. 3-Pole Connector
1 Pc. Self-adhesive Holding Clip for Connector
Mounting Instructions
Subject to misprints, errors and technical modification without notice.
All rights reserved, particularly the right of reproduction. Copyright VOTRONIC 04/2018.
Made in Germany by VOTRONIC Elektronik-Systeme GmbH, Johann-Friedrich-Diehm-Str. 10, 36341 Lauterbach/GERMANY
Phone: [phone] Fax: [phone] E-mail: [email protected] Internet: www.votronic.de