Contronics EP DM4 User manual

Ultrasonic
humidifier
EN - Original instructions
EP DM4
EP DM8
EP DM12

Preface
45% of all beautiful crops that grow on our fields ends up wasted. This not only puts a heavy
burden on our environment, but is also unacceptable in a world with a growing population and
so many mouths to feed.
Dry Misting is a technology that spreads tiny drops of water in the air, creating a thin layer of
mist. As the mist evaporates, the humidity rises and the temperature drops naturally. When
applied on fresh products, Dry Misting results in retaining freshness, colour and nutrients.
Extending the shelf life of these products up to twice as long and hereby reducing food waste.
At Contronics, we are on a mission is to reduce food waste by applying Dry Misting throughout
the entire fresh food supply chain.
Thank you for your purchase and joining us on this mission!
Copyright disclaimer
Copyright © Contronics Engineering B.V. All rights reserved. No part of this publication may be
reproduced or transmitted in any form or by any means without the prior written permission of
Contronics. The information in this publication is proprietary to Contronics.
Liability disclaimer
Contronics Engineering B.V. does not accept any liability due to incorrect installation,
maintenance or operation of the equipment described in this manual, or due to the use of
components that are not authorised by Contronics.

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Instruction manual
Table of Contents
1.About this document 4
1.1.Intended readers 4
1.2.Language 4
1.3.Symbols used in this manual 4
1.4.Terminology 5
1.5.Product variations 5
1.6.Warranty 5
1.7.Contact information 6
2.About the product 6
2.1.Intended use 6
2.2.Description 7
2.3.Main components 7
2.4.Display & controls 8
2.5.Ozone generator 9
2.6.Dimensions 9
2.7.Label & specifications 10
2.8.Optional components 11
2.9.Conformity 13
3.Safety 13
3.1.Safety precautions 13
3.2.Personal protection 14
3.3.Qualification of personnel 14
3.4.Safety instructions 14
4.Transport & storage 17
4.1.Packaging 17
4.2.Storage 17
4.3.Transport 17
5.Installation 18
5.1.Safety 18
5.2.Removing and inspecting the
packaging 18
5.3.Placing the humidifier 18
5.4.Water connections 20
5.5.Electrical connections 22
5.6.Connecting the air distribution
system 23
6.Commissioning 24
6.1.Safety 24
6.2.Installation checklists 24
6.3.Performing a functional test 26
7.Operation 27
7.1.Safety 27
7.2.Using the display 27
7.3.Performing a flushing cycle 32
7.4.Programming the ozone generator 33
8.Troubleshooting 35
8.1.Performance issues 35
8.2.Display messages 35
8.3.Overheating 37
9.Maintenance 38
9.1.Safety 38
9.2.Regular maintenance 38
9.3.Replacing the transducers 39
9.4.Cleaning or replacing the air filters 40
9.5.Exploded view & replacement parts 41
10.Decommissioning & disposal 42
10.1.Decommissioning the humidifier 42
10.2.Disposing of the humidifier 42

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1.About this document
This instruction manual contains the information necessary to properly and safely install,
operate, commission and maintain your humidifier.
Store this manual in or near the humidifier for future reference.
1.1.Intended readers
This instruction manual is intended for the following readers:
• The owner of the humidifier.
• The technician that performs the installation, commissioning and/or maintenance of
the humidifier.
• The operator of the humidifier.
Make sure you have fully read and understood the contents of this manual before
installing, operating or performing maintenance on the humidifier.
1.2.Language
This instruction manual is originally written in English (GB) and has been translated to:
• Dutch (NL)
• French (FR)
• German (DE)
1.3.Symbols used in this manual
The following symbols are used throughout this manual to highlight important
information:
Symbol Definition
6WARNING Indicates a hazardous situation that, if not prevented, could result
in death or serious injury or serious damage to the product or the
environment.
6CAUTION Indicates a hazardous situation that, if not prevented, could result
in moderate or minor injury or minor damage to the product or the
environment.
NOTICE Indicates useful information that is not related to hazardous
situations.
Indicates a reference to another paragraph within this document.

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Instruction manual
Symbol Definition
Indicates a reference to tools or materials that are not provided along
with the humidifier.
Indicates a reference to an OEM manual or another external
document.
1.4.Terminology
The following terms are used throughout this manual:
Term Definition
Transducers Components that convert an electrical signal to mechanical
vibrations. Located on the bottom of the water reservoir.
Mist The humidified air that is created by the humidifier.
Mist
distribution
system
The network of pipes through which the mist is transported to the
area that needs to be humidified.
RO water Demineralised water that has been filtered via reverse osmosis.
1.5.Product variations
This manual applies to the following humidifiers:
• EP DM4
• EP DM8
• EP DM12
All models have identical functionality. The models also vary in capacity, amount of air
outlets and length.
NOTICE
The illustrations in this manual show the EP DM4, unless stated otherwise.
1.6.Warranty
A warranty period of one (1) year applies to this humidifier. The general terms and
conditions of Contronics apply to this warranty.
The general terms and conditions of Contronics can be found in the
appendix of this document.

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1.7.Contact information
For more information about your humidifier or this document, please contact:
Contronics B.V.
Tel: [phone]
Mail: [e-mail]
Ambachtsweg 8
5492 NJ, Sint-Oedenrode
The Netherlands
2.About the product
This chapter provides all the information necessary to understand the humidifier.
2.1.Intended use
The humidifier is intended to be used to generate and distribute humidified air with the
goal of preserving fresh produce.
2.1.1.Unintended use
The humidifier is not intended for use in healthcare premises or other locations where
the occupants or materials are adversely sensitive to airborne bacteria, viruses, dust, and
debris.
The humidifier is not intended to be supplied with any other liquids other than water.
The humidifier is not intended for outdoor use.
NOTICE
Contronics does not accept liability for injury, product damage or reduced performance
due to unintended use of the humidifier.
2.1.2.Other applications
The humidifier may be applied in other situations than described in this document.
Various information sheets and drawings about other applications can be
downloaded from www.contronics.nl.

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Instruction manual
2.2.Description
The function of the humidifier is to generate and transport humidified air. This is done as
follows:
1.Water is transported into an internal water reservoir. Excess water is discharged.
2.Air is sucked into the humidifier by a fan. The air passes through a filter to remove
any pollution.
3.High-frequency vibrations (1.7 MHz) are generated by transducers at the bottom of
the water reservoir.
4.Water droplets (1 – 3 µ) are ejected above the water surface.
5.Water droplets mix with the air.
6.Humidified air is transported out of the humidifier into the connected distribution
system.
2.3.Main components
The humidifier consists of the following main components:
A
G
I
J
K
L
M
H
E
B
D
C
F
A.Display & controls
B.Air outlet for internal cooling
C.Label
D.Water drain connection
E.Water supply connection
F.Water supply and drain covers
G.Mist outlets
H.Air inlets & filters
I.External control interface
J.Power cable socket (C13)
K.Power cable
L.Water supply connection piece
M.Water drain connection piece
A detailed parts list of the humidifier can be found in §9.5..

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2.4.Display & controls
The humidifier is controlled through a display, located on the front panel of the
humidifier. The display allows you to:
• Monitor the performance.
• Change the performance settings.
• Receive error messages.
The display consists of the following components:
A
B
C
A.LCD display
B.Feedback LEDs
• Green
• Blue
• Red
C.Buttons
• Home
• Down
• Up
• Confirm
For instructions on how to use the display, see §7.2..
The feedback LEDs communicate information about the status of the humidifier:
Colour Status Meaning
On Flushing cycle is active.
Blinking Water reservoir is being filled.
Off Water reservoir is full.
On Mist is being produced.
The intensity of the LED indicates the set capacity of the
humidifier:
• Weak = Low capacity.
• Strong = High capacity.
Blinking Ozone is being produced.
Off No mist or ozone is being produced.
On Error has occurred and is shown on the display.
Blinking Warning is shown on the display.
Off No errors or warnings are shown.

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Instruction manual
2.5.Ozone generator
The humidifier is equipped with an ozone generator. This component generates volatile
ozone (O3) gas that kills pathogens. The ozone is transported through the humidifier and
distribution system to disinfect every component.
NOTICE
The amount of ozone generator modules varies per model:
• The EP DM4 has 1.
• The EP DM8 has 2.
• The EP DM12 has 3.
For instructions on how to program the ozone generator, see §7.4..
2.6.Dimensions
I
AD
B
C
G
H
H
E F

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Model A (mm) B (mm) C (mm) D (mm) E (mm) F (mm) G (mm) H (mm)
EP DM4 213 320 273 224.4 136.5 95 45.1 56
EP DM8 213 440 273 224.4 136.5 95 45.1 56
EP
DM12
213 560 273 224.4 136.5 95 45.1 56
2.7.Label & specifications
Important specifications of the humidifier can be found on the label:
The label is located on the front panel, below the display (see §2.3.).
2.7.1.Physical specifications
The physical specifications of the humidifier are shown in the following table:
Model Unit EP DM4 EP DM8 EP DM12
Weight kg 10.2 13.6 17.1
Water reservoir volume L 0.7 1.4 2
Water supply connection
(outer diameter)
inch ¾ (BSP Male thread)
Water drain connection
(inner diameter)
inch ½ (Quick connection)
2.7.2.Performance specifications
The performance specifications of the humidifier are shown in the following table:
Model Unit EP DM4 EP DM8 EP DM12
Capacity kg/h +/- 3.3 +/- 6.6 +/- 9.9
Air flow m3/h 0 - 50 0 - 100 0 - 150
Supply voltage VAC
@Hz
110 - 240 @ 50 / 60 110 - 240 @ 50 / 60 110 - 240 @ 50 / 60
Power
consumption
W 210 400 600