Operation - Trotec DA 4 Mode D'emploi

04. OPERATION

Drying process
The DA 4 separates the drying process into several
drying cycles and/or drying intervals
1. Active drying
• In the first switching cycle, the humidity is meas-
ured in all three ducts.
• In the following cycle, the two ducts with low
measured humidity are closed and active drying is
implemented in the only open and moist duct.
• Subsequently, the humidity is re-measured in all
three ducts.
• Thereafter, active drying starts again in the most
humid duct, while the two less humid ducts are
closed again.
2. Subsequent drying 1
• These cycles are repeated until the following con-
ditions are met:
1. The humidity of the process air is below 70 % RH
2. Drying runs for at least 4 days
3. The mixing ratio in all three channels is less than
10 g water / kg air
4. The process air can be max. 20 % wetter than the
ambient air.
• If the conditions listed above are met, the device
goes into the "Subsequent drying 1". Drying per-
formance will be controlled now every 4 hours.
This phase lasts for 48 hours
• If moisture is detected again in this phase, the unit
returns into "active drying".
3. Subsequent drying 2
• After "Subsequent drying 1" the final interval "Sub-
sequent drying 2" begins. All channels are open and
the moisture gets checked continuously.
• Drying and moisture measurement runs with the
open channels to further degradation.
B - 4
The interval times can be changed using the file "DA.
cfg". See chapter "Timer configuration".
Room air humidity
For the drying process, the difference between the
room air humidity and the soil moisture content must
amount to a minimum of 20 %.
For this reason, the DA 4 Discharge Control Unit also
records the room humidity and temperature by means
of the room air sensor. If the room air sensor measu-
res an excessive room humidity which makes drying
impossible, the DA 4 starts to emit flashing warning
signals.
Remote monitoring of warnings
and measuring data
The DA 4 / DA 4 M Discharge Control Unit saves the
measurements on an integrated USB flash drive. In this
way, all drying processes are documented and secu-
red against data losses.
The DA 4 M Discharge Control Unit additionally sends
the measurements of both sensors to a WEB centre
which enables a continuous online remote monitoring
of the room air humidity and the drying process.
If the sending signal is too weak directly at the installa-
tion location of the DA 4 M Discharge Control Unit , the
antenna with the approx. 5-m cable may be installed
(e.g. next to the window) in order to obtain a sufficient
sending signal. Even if the data can not be sent (for
example, due to a weak telecommunication network),
the data is always stored on the USB stick.
The registration on the website www.mqdatamonitor.
com is separately described there. With an e-mail ad-
ress and a self-selected password you can register at
www.mqdatamonitor.com.
On your DA 4 M you will find a white sticker with
the device-name and an associated password.
You need this information to register the device at
www.mqdatamonitor.com
Operating manual – DA 4 / DA 4 M Discharge Control Unit EN