Dupla MultiControl Manual de instrucciones - Página 6
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Imprimir página2. Basic Functions
2.1 Safety shutdown during programming: When entering into programming mode, all slots are deactiva-
ted for safety reasons.
2.2 Function monitoring of external devices: The power unit is fi tted with green LEDs (17). These indicate
the active control of external devices. The three channels for the interval timer can be switched on and off nine
times each, within 24 hours.
2.3 Malfunction and short-circuit recognition of temperature sensor: The temperature sensor (11)
features recognition of sensor malfunction (open or short-circuit), which is displayed with E01 or E02. For
safety, the heater channel ist switched „off" in this event, so that the aquarium cannot overheat.
If the aquarium is not heated by a Dupla Therm cable heater but an immersion heater, it is recommended to
only use such heaters with integrated thermostat and safety shutdown.
2.4 Self-calibration temperature sensor: The temperature sensor is a precision measuring instrument with a
maximum tolerance of 1%. If replacement is required, calibration is not necessary.
2.5 Interval reset: Irrespective of the time of day, all programmed intervals start when the device is switched
on or the menu is quit.
3. Programmable Functions
3.1 Control of water temperature: Water temperature is controlled with +/- 0.1° C accuracy.
Contact-less switching of the water temperature channel is achieved by use of an electronic triac switch.
The substrate temperature channel can be set within the range of 15° to 35° C. The substrate temperature
channel is automatically preset 0.1° C higher.
Example: You have set the water temperature to 25.0° C. At a measured 25.0° C, the water temperature chan-
nel switches off, however substrate heating continues. If the substrate heating is suffi cient to raise the water
temperature to 25.1° C, then the substrate heating channel also switches off.
Warmth in the substrate strengthens the plant roots, increases the biological activity of the substrate and
creates circulation within the substrate for improved transportation of oxygen and nutrients. The best possible
requirements for healthy plant growth are achieved.
Hint: Immersion heaters with an integrated thermostat should be set 3-4° C higher than the required tempera-
ture, so that electronic control via the MultiControl can operate correctly.
3.2 Cooling operation: An inverting function can be enabled to change the substrate heating channel to
a cooling channel. In this way, instead of fl oor heating, an external cooling unit or a cooling fan can be con-
nected to combat the temperature rise in summer.
3.3 Cooling device control: Via the water temperature channel, the immersion heater heats the water up
to the preset temperature. If the temperature then increases more than the preset difference, a cooling device
can be controlled via the substrate temperature channel. When the cooling option is selected, the differential
between heating and cooling can be set as required. The control accuracy is 0.1° C.
Example: If the water temperature is at 25.0° C in COOL operation and the differential to the substrate
heating is 3.0° C, the immersion heater is switched off at 25.0° C. If, due to higher summer temperatures, the
aquarium continues to heat up to 28.0° C due to the summer temperature, cooling is activated.
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