De2 or De4 Fog Generator
User Guide, Rev: A/b, April 2019 6 / 38
Basic description
The De2 or De4 Fog Generators were designed with safety and reliability in mind. They are capable of
generating pure white, non-toxic fog for as long as you have fluid (100% duty cycles). Pulsating the Fog
Signal ON and OFF can control the amount of the fog emission. They are one of the quietest in the industry.
The fog generated is also one of the safest and environmentally safe.
These Fog generators are also equipped, as a standard feature, with the Automatic Purging System™
(APS™). This system purges the heating module after the first heating cycle and after every emission of fog
preventing residual build up and clogging.
At the heart of the MDG Fog Systems is an electronic assembly that keeps the heat exchanger at a very
stable temperature, with three different types of fail-safe systems. Those three types of electronic fail-safe
systems are designed to protect against over and under-heating conditions and against component failure.
When an overheating condition is detected, or if the internal temperature of the generator reaches 70°C
(158°F), a safety circuit is triggered. This circuit removes the power to the heating elements, preventing
hazardous conditions. When an under-heating condition occurs, the generator will stop producing fog until
the temperature of the heating module is back within parameters.
If an error occurs, the Fog Generator will automatically shut down, and the Fail state will be displayed on
the LCD, in the Status Menu. Check the FAIL State and Troubleshooting paragraphs for diagnostics.
When « Fog On » mode is activated, the MDG Fog Generator will produce fog for as long as the ready level
is reached (temperature) and all other control parameters are within specifications. When « Fog On » mode
is deactivated, the APS™cycle is automatically initiated to clear the heating module. Never remove the
power to a generator while it is producing fog –See the Shut down procedure.
WARNING
•When not in use ALWAYS switch off the power switch located on the back panel, and
disconnect the gas line, the fog fluid line and the AC line.
•Never install above people.
•This De2 or De4 Fog Generator must be installed in an upright position on a stable and
leveled surface.
•Use in a well-ventilated area.
•Do not operate at less than 2 meters (6.5 ft.) from people.
•The operating pressure is 345 kPa / 3,45 bar / 50 psi.
