MDG De2 User manual
Les Générateurs de Brouillard MDG Ltée / MDG Fog Generators Ltd
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10301 avenue Pelletier, Montréal, Québec, Canada H1H 3R2
Tel. 514-272-6040 / 800-663-3020 - Fax 514-722-3229
www.mdgfog.com e-mail : info@mdgfog.com
User Guide
De2 or De4 Fog Generator
with PLC and Modbus RTU interfaces
(Revision A/b, April 2019, © MDG Fog Generators Ltd)
De2 or De4 Fog Generator
User Guide, Rev: A/b, April 2019 2 / 38
Intentionally left blank
De2 or De4 Fog Generator
User Guide, Rev: A/b, April 2019 3 / 38
Table of content
Section Page
Table of content 3
User Guide 4
How to read this User Guide 4
Qualified Personnel 5
Need a little Help? 5
Copyright Notice 5
Basic description 6
Pre-Install 8
Environmental Requirements 8
Electrical Requirements 8
Tubing Requirements 8
Unpacking 9
Installing the De2 or De4 10
Typical installation 10
Installation 12
Working with the Fog Generator 14
The Keyboard 15
LCD Saver 15
Menu Tree 16
Operating instructions 19
Starting Procedures 19
Fog Production 19
Shut down procedure 20
FAIL State 20
Digital PLC Control 22
Modbus Control 23
Bootloader 26
Fog Fluid 27
Filling the Fluid Reservoir 27
Troubleshooting 28
External Fluid Reservoir 31
Technical specifications 32
Dimensions 33
MDG De2 33
MDG De4 34
Installation 35
Warranty 36
Declaration of conformity 37
Notes 38
De2 or De4 Fog Generator
User Guide, Rev: A/b, April 2019 4 / 38
User Guide
Congratulations! You are now in possession of a MDG De2 or De4 Fog Generator.
We hope this Fog Generator will bring you long hours of satisfaction.
Please read the following instructions carefully and completely before installing your Fog Generator and
turning it on.
CAUTION
This appliance is not intended for use by persons (including children) with reduced physical,
sensory or mental capabilities, or lack of experience and knowledge, unless they have been
given supervision or instruction concerning use of the appliance by a person responsible for
their safety. Children should be supervised to ensure that they do not play with the appliance.
CAUTION
If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or
similarly qualified persons in order to avoid a hazard.
How to read this User Guide
WARNING and CAUTION are used throughout this manual to forewarn of possible danger
to the users if precautions are not observed. As is customary in military and some commercial
manuals, the precautions will always precede the steps to which it refers so that the users
will be aware of any potential danger before performing the task.
WARNING and CAUTION labels are key equipment parts. Do not remove, change or cover
these labels. If the labels are not readable, contact MDG Fog Generators Ltd.
BOLD TEXT: Contains important information, cautionary steps and warnings that should be read
and understood prior to installing the unit.
BOLD and ITALIC TEXT: pertains to product names and trademarks, proprietary names and
products made by MDG Fog Generators Ltd.
Please read the following instructions carefully and completely before installing, pressurizing and turning
on the Fog Generator.
De2 or De4 Fog Generator
User Guide, Rev: A/b, April 2019 5 / 38
Qualified Personnel
MDG Fog Generators Ltd systems will perform as designed but are to be installed, operated, and
serviced by trained personnel. Installation, operation and servicing of this equipment require trained
personnel with technical skills in electrical theory and fluid dynamics. This manual is not a substitute
for qualified technicians or local authorities on electricity, gas, fluid, or engineering, and therefore
does not supersede, amend or void local safety installation practices. Please refer to local authorities
for further information.
Need a little Help?
At MDG, we try our best to provide you with complete information for our products. Despite our best
efforts, sometimes, a little more is required due to the specifics of your project and installation. We’re
looking forward to go that extra mile for you.
Contact us:
By Phone: +1-800-663-3020 +1-514-272-6040
By Fax: +1-514-722-3229
On the Web: www.mdgfog.com
By Mail: MDG Fog Generators Ltd.
10301, Avenue Pelletier
Montréal, QC, H1H 3R2
Canada
Please note that our business hours are from 08h00 to 12h00 and from 12h30 to 17h00 (8:00AM to
12:00PM and 12:30PM 5:00PM), Eastern (GMT -5).
Copyright Notice
This User’s Guide (Original Instructions) is copyrighted and all rights are reserved by MDG Fog Generators
Ltd.
No part of this publication may be reproduced, transmitted, transcribed, stored in a retrieval system, or
translated into any language or computer language, in any form or by any means, electronic, mechanical,
magnetic, optical, chemical, manual or otherwise, without the prior written permission of MDG Fog
Generators Ltd.
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.
De2 or De4 Fog Generator
User Guide, Rev: A/b, April 2019 7 / 38
Access door
Fog fluid input
MODBUS RTU
PLC Connector
USB Connector
LCD
Keyboard
Heating module
- De2 : 2 nozzles
- De4 : 4 nozzles
CO2or N2Gas input
50 psi ± 5%
Fog output
nozzles
AC input, 2960 W,
190-250 VAC
50/60 Hz
Power Supply
24 VDC
AC Ground
Main Control board
AC Input
Control
Input / Output
Heater Control
boards
Fuse (15 A)
IEC Filter
Combiner
De2 or De4 Fog Generator
User Guide, Rev: A/b, April 2019 8 / 38
Pre-Install
Environmental Requirements
•0 ºC to 50 ºC (32 ºF to 122 ºF) operating temperature
•2 m (6.5 ft) clearance on all sides and in front of the equipment required.
•Wall-mounting hardware (not provided) must support 22.4 kg (49.2 lb) on four suspension points
(see Dimensions paragraph).
•Enclosure type: NEMA 4-12
•Storage conditions: -40ºC (-40ºF) to 60ºC (140ºF), 80% relative humidity @ 60ºC (140ºF).
Electrical Requirements
•Operating voltage: 190-250 VAC, single phase. 50Hz –60Hz, 2815 W nominal (2200 –2960 W).
•Ground / Earth connection REQUIRED.
•AC cable: 2 mm2(14 AWG), 3-wires, 105 ˚C copper, 300 V, CE UL/CSA compliant cable, Cable
OD: 6.0-12 mm (0.23-0.47 in)
•Data cable: 0.75mm2(22 AWG), CE UL/CSA compliant cable.
Tubing Requirements
•FLUID INPUT: ¼” NPT connector, 9.5 mm diameter tubing (3/8 inch) recommended
•GAS INPUT: ¼” NPT connector, 6.3 mm (1/4 inch) tubing recommended
De2 or De4 Fog Generator
User Guide, Rev: A/b, April 2019 9 / 38
Unpacking
The system is carefully packed at the factory for shipment. Each enclosure is custom fitted into a heavy-duty
wooden frame cardboard box. Upon arrival, carefully inspect the containers for any shipping damage.
CAUTION
If ANY damage is found, immediately report it to the freight service and to MDG Fog
within 24 hours.
When opening the container, ensure that you do not damage the exterior finish of the enclosure. Save all
packing material for eventual equipment factory return.
A User Guide (this User Guide) is provided with the De2 or De4™ Fog Generator.
De2 or De4 Fog Generator
User Guide, Rev: A/b, April 2019 10 / 38
Installing the De2 or De4
Careful planning must be used when selecting the location to mount the equipment:
•The De2 or De4™ can be installed indoor or outdoor, away from heavy dust or any harsh
environment situations.
•Ensure there is enough space for all conduit and tubing runs. Where possible, mount the De2 or
De4™ as close as possible to external reservoir.
•The MDG De2 or De4 requires 2 m (6.56 ft) of clearance to the front.
CAUTION
To avoid fire hazard and explosion risk, only use MDG Neutral Fog Fluid™. Not doing so
WILL damage the equipment’s components and void the warranty.
Typical installation
If the fog generators are at the same elevation than the pressurized reservoir PFR or if the distance is below
100 meters, the fog generators can be connected directly to the PFR.
This manual suits for next models
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