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Installation and Operating Manual
LCD‐Thermometer / Clock S
The 3‐fold thermometer with crystal clock is purpose‐build for the mounting in caravans, boats and
intervention vehicles.
Please read the mounting instructions and operating manual including the safety
regulations completely prior to starting connection and start‐up.
The VOTRONIC LCD‐Thermometer /Clock S is equipped with a large LC display, which ensures very good
legibility, even from a distance. The integrated background illumination guarantees a high‐contrast
representation, even with unfavourable lighting conditions.
The thermometer measures not only the room temperature, but also the outside temperature is measured by
the supplied external temperature sensor. The third measuring input can be used for control of refrigerator
boxes or heat boxes. The third temperature sensor is separately available as accessory. The measuring ranges
cover ‐30 °C to +70 °C with a resolution of 0.1 °C.
The precise crystal clock shows minutes and hours (24 hours format), a flashing colon for operational check and
the weekday in the lower row. The clock is equipped with a power reserve. Thus, it continues working also at a
short‐time voltage loss. The DCF module (order No. 2062), which is available as accessory, allows radio‐
controlled operation.
The unit distinguished by low current consumption, and it is suitable for 12 V as well as 24 V board mains
supply.
For fire‐fighting vehicles and intervention vehicles the second measuring input can be used for automatic
activation of the clock and of its illumination.
Appearance and dimensions of the display are perfectly adapted to the VOTRONIC modular system. The
VOTRONIC modular system includes tank display units (fresh and sewage water as well as feces), the LCD series
(solar computer, battery computer, ammeter and voltmeter), as well as switch and fuse panels.
Installation and Connection:
Choose a well visible and easily accessible location in the living area for installation of the LCD thermometer /
clock. Direct sun radiation should be avoided, since the built‐in temperature sensor might heat up strongly, and
a measurement of the room temperature by the module is not possible any longer.
The rear cutout opening should be covered with electrically nonconducting material to ensure efficient
protection of the electronic system and full utilization of the storage space, which might be located behind.
Installation place for the external measuring sensor:
If the external sensor shall be used as outside temperature sensor, direct sun radiation or heat radiation on the
engine block/engine compartment/radiator preferably should be avoided.
If the measuring input 3 is used for control of the refrigerator box or heat box, the external temperature sensor
(required accessory, order No. 2001) should be placed at average height of the container.
Terminals:
Connection +Batt., ‐Batt.
This connection is used for the current supply to the unit. The +Batt. cable is to be protected by means of a
fuse 3 A. The cable cross‐sections should be 0.75 mm², at least.
Sensor connection
The temperature sensors are connected to the connections „–Sens." and „+Sens1", or „–Sens." and „+Sens2".
The sensors do not have a defined polarity. For better identification, we recommend to connect the black wire
to „–Sens." and the red wire to „+Sens.".
No. 1253
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Summary of Contents for Votronic 1253
- Page 1 Installation and Operating Manual LCD‐Thermometer / Clock S No. 1253 The 3‐fold thermometer with crystal clock is purpose‐build for the mounting in caravans, boats and intervention vehicles. Please read the mounting instructions and operating manual including the safety regulations completely prior to starting connection and start‐up. The VOTRONIC LCD‐Thermometer /Clock S is equipped with a large LC display, which ensures very good legibility, even from a distance. The integrated background illumination guarantees a high‐contrast representation, even with unfavourable lighting conditions. The thermometer measures not only the room temperature, but also the outside temperature is measured by the supplied external temperature sensor. The third measuring input can be used for control of refrigerator boxes or heat boxes. The third temperature sensor is separately available as accessory. The measuring ranges cover ‐30 °C to +70 °C with a resolution of 0.1 °C. The precise crystal clock shows minutes and hours (24 hours format), a flashing colon for operational check and the weekday in the lower row. The clock is equipped with a power reserve. Thus, it continues working also at a short‐time voltage loss. The DCF module (order No. 2062), which is available as accessory, allows radio‐ controlled operation. The unit distinguished by low current consumption, and it is suitable for 12 V as well as 24 V board mains supply. For fire‐fighting vehicles and intervention vehicles the second measuring input can be used for automatic activation of the clock and of its illumination. Appearance and dimensions of the display are perfectly adapted to the VOTRONIC modular system. The VOTRONIC modular system includes tank display units (fresh and sewage water as well as feces), the LCD series (solar computer, battery computer, ammeter and voltmeter), as well as switch and fuse panels. Installation and Connection: Choose a well visible and easily accessible location in the living area for installation of the LCD thermometer / clock. Direct sun radiation should be avoided, since the built‐in temperature sensor might heat up strongly, and a measurement of the room temperature by the module is not possible any longer. The rear cutout opening should be covered with electrically nonconducting material to ensure efficient ...
- Page 2 ‐ 2 ‐ The resistor, which had been connected in the factory, and which is located between the terminals „–Sens.“ and „+Sens2“ must be removed in any case, since the connection „+Sens2“ is used for automatic activation of the illumination. Connection control input illumination: The second measuring input can be used for automatic activation of the clock and of its illumination. Connect the supplied resistor 1 kΩ between the terminals „‐Sens.“ and „+Sens.2“, and connect a control voltage to the terminal „+Sens.2“. In this case, connection and use of a second temperature sensor is not possible. The use of the second input as control input for the illumination must be set in the menu. The illumination of the display is still active for 3 minutes after disconnection of the signal. Even without control signal, the display can be operated as usual. ...
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Page 3: Operation
‐ 3 ‐ Operation: Key 1: Next page of display. Adjustment of illumination (3 s) Key 2: Previous page of Display. Adjustment of illumination (3 s) Key 3: Display on/off. Settings (3 s) Activation, Deactivation The unit is optimized for extremely current saving operation and offers three operation modes. Stand‐by: During stand‐by mode the display is empty. Display with and without illumination: As soon as the unit is operated, the display illumination will be switched‐on and will remain activated for 3 minutes. If there is no operation during this time, the illumination will be switched‐off automatically. The display continues showing the same data. The display illumination is reactivated by pressing any key. The ... - Page 4 ‐ 4 ‐ Settings: The menu for settings of the clock or of other functions can be called, if the display switched‐on and key 3 is pressed and hold for more than 3 seconds until “Set” is flashing. In the menu, key 2 is used to save the corresponding setting and to jump to the next menu item. Setting of the clock: Set the current hour using key 1 and 2. Acknowledge using key 3. The display changes to the minutes setting. Set the current minutes using key 1 and 2. Acknowledge using key 3. The display changes to the date. Set the current day using key 1 and 2. Acknowledge using key 3. The display changes to the month. Set the current month using key 1 and 2. Acknowledge using key 3. The display changes to the year. Set the year using key 1 and 2. Acknowledge using key 3. Setting of the second measuring input: If the automatic activation of the illumination shall be used, set the second measuring input to „SENS no“. Thus, the temperature measurement of the 2 ...
- Page 5 ‐ 5 ‐ Option DCF Module On request, the clock can be extended by the separately available DCF module (order No. 2062) for automatic radio control by the time signal transmitter DCF77 (Long‐wave Transmitter Mainflingen near Frankfurt/M). Reception is improved, if the DCF module is installed in the upper area of the vehicle. Thus, an effective radius of approx. 1,000 km is possible. Use the delivered plug‐and‐go cable of 2 m length to connect the module to the clock. The polarity of the 3‐pole connector is at discretion. A marking in the display near the antenna symbol indicates the condition of the DCF reception. Flashing marking: The module receives the time, the synchronisation is in progress. Lighting symbol: The synchronisation of the internal clock with the DCF time was successful. After a restart, it might take some minutes until the synchronisation starts. The synchronisation itself might also take some minutes. After a successful synchronisation, the next synchronisation will be effected at the beginning of the following hour. In case of bad reception, the internal crystal‐controlled clock will continue working in any case ensuring that the correct time will always be displayed. ...
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Page 6: General Information
‐ 6 ‐ General Information: Cleaning: We recommend to use a damp microfibre cloth with pure water or, if required, with water with a few soap. Take care, that no liquid flows along the display screen or along the edges of the front panel. Never use solvents, aggressive household cleaners, and scratching or abrasive agents or objects to clean the front panel and particularly the display itself. Trouble‐shooting: No display at all: a) Reverse battery: Check! b) Fuse defective Battery is totally discharged, below 7 Volts: Recharge immediately! d) Connection cable is interrupted, damaged, or it is not inserted: Check! „Hieroglyphs“ on the display: a) The internal check programs of the unit have found an (memory) error: Withdraw the cable connector for 10 seconds. After that, an initial start‐up is to be executed as described above. Display: Err: a) Short‐circuit at one of the temperature sensors. b) Resistor between the terminals „+Sens.2“ and „‐Sens.“ had not been removed, and the input shall be used for temperature measurement, or it shall not be used at all. Remove the resistor. Display: ‐.‐: a) Temperature sensor had not been connected or cables are interrupted. No DCF reception: a) DCF module not existing. b) The synchronisation with the DCF signal can take up to 5 minutes. If this fails, the next attempt for ... - Page 7 4. With a rear insulating cover of the display unit. Never use the unit at locations where the risk of gas or dust explosion exists! Open‐air operation of the unit is not allowed. 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. The unit is to be disconnected from any connection prior to execution of electrically welding or work on the electric system. If the non‐commercial end‐user is not able to recognize the characteristic values being valid for a unit or the regulations to be observed, a specialist is always 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. Non‐observance may result in injury or material damage. Never use solvents or aggressive household cleaners for cleaning of the display! The warranty period is 24 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 D‐ 36341Lauterbach/Germany. ...
- Page 8 Disposal of the The product conforms to RoHS. product in the Thus, it complies with the normal directives for Reduction of household Hazardous Substances in Electrical waste is not and Electronic Equipment. allowed. Declaration of Conformity: According to the stipulations of the regulations 2006/95/EG, 2004/108/EG, 95/54/EG this product corresponds to the following standards or standardized documents: EN55014; EN55022 B; DIN14685; DIN40839‐1; EN61000‐4‐2; EN61000‐4‐3; EN61000‐4‐4. Subject to misprints, errors and technical modification without notice. All rights reserved, particularly the right of reproduction. Copyright VOTRONIC 06/13. Made in Germany by VOTRONIC Electronic‐Systeme GmbH & Co. KG, Johann‐Friedrich‐Diehm‐Str. 10, 36341 LAUTERBACH/GERMANY Phone: +49 (0)6641 / 91173‐0 Fax: +49 (0)6641 / 91173‐20 E‐mail: info@votronic.de internet: www.votronic.de ...
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