VAN DER ENDE AIRMIX User manual

Airmix™ User Manual
Version: 2.0
Date: July 2020

Van der Ende Groep · Aartsdijkweg 23, 2676 LE, Maasdijk · Tel: [phone]
IBAN NL71 RABO 0340341610 · CC The Hague 27230471 · VAT-number NL8000.78.378.B01 · [email protected] · www.vanderendegroep.nl
Pagina 2 van 24
Foreword
This user guide is intended for users of the Airmix™ and technicians who install and maintain it. The
manual and operating instructions are bundled together in a single document.
Each chapter is numbered and, where necessary, divided into sections. The table of contents on page
2 contains an overview of the chapters and paragraphs, with references to page numbers.

Van der Ende Groep · Aartsdijkweg 23, 2676 LE, Maasdijk · Tel: [phone]
IBAN NL71 RABO 0340341610 · CC The Hague 27230471 · VAT-number NL8000.78.378.B01 · [email protected] · www.vanderendegroep.nl
Pagina 3 van 24
Contents
Foreword ...................................................................................................................................... 2
Contents ....................................................................................................................................... 3
1. Identification ............................................................................................................................. 4
1.1 General................................................................................................................................ 4
1.1.1 Description of the device ................................................................................................ 4
1.1.2 Specifications................................................................................................................. 4
1.1.3 Diagram of the system ................................................................................................... 5
1.2 Users................................................................................................................................... 6
1.3 Use ..................................................................................................................................... 6
1.4 Authorised servicers ............................................................................................................. 6
1.5 Operating environment ......................................................................................................... 6
1.6 Guarantee conditions............................................................................................................ 6
1.7 Relevant directives ............................................................................................................... 6
2. Description................................................................................................................................ 7
2.1 General................................................................................................................................ 7
2.2 Transportation and Storage .................................................................................................. 7
3. Safety instructions ..................................................................................................................... 7
4. Installation................................................................................................................................ 8
4.1 Contents of the installation kit............................................................................................... 8
4.2 Suspending the Airmix™ ....................................................................................................... 9
4.2.1 Mounting directly under the truss lattice .......................................................................... 9
4.2.1 Mounting with suspension brackets ................................................................................10
4.3 Attaching the fan.................................................................................................................11
4.4 Installing the extension........................................................................................................13
4.5 Installing the spacer ............................................................................................................14
4.6 Installing the valve position sensor .......................................................................................15
4.7 Modifying the screen cloth ...................................................................................................16
5. Connecting the thermostatic switch ...........................................................................................16
6. Operation/using for the first time...............................................................................................18
6.1 Gear-rack drive ...................................................................................................................18
7. Maintenance ............................................................................................................................19
8. Failures and repairs ..................................................................................................................19
9. Disassembly .............................................................................................................................19
10. Declaration of Conformity........................................................................................................20
Attachments ................................................................................................................................21
CE declaration concerning fan....................................................................................................22
CE declaration concerning linear drive ........................................................................................23
Note ............................................................................................................................................24

Van der Ende Groep · Aartsdijkweg 23, 2676 LE, Maasdijk · Tel: [phone]
IBAN NL71 RABO 0340341610 · CC The Hague 27230471 · VAT-number NL8000.78.378.B01 · [email protected] · www.vanderendegroep.nl
Pagina 4 van 24
1. Identification
This overview contains general information about the device. The purpose of this part is to indicate
the limits and overall operation of the device, and the areas it is used in.
1.1 General
1.1.1 Description of the device
The Airmix™ consists of a fan attached to an aluminium housing which is open at the top and fitted
with two valves at the rear. These valves are controlled by a gear-rack drive. The Airmix™ is equipped
with a power cord with a plug for the fan, and a power cord for the gear-rack drive. The Airmix™ has
no internal controls.
1.1.2 Specifications
General
Type
Airmix™
Maximum dimensions L x W x H
777 x 700 x 998 mm
Total weight
32 kg
Fan
Capacity
0.38 kW
Voltage
230 V, 50 Hz
Current
1.7 A
Circulation capacity
5800 m3/hour*
Ventilation capacity
5200 m3/hour*
Dust and water ingress protection
IP54
Insulation class
THCL 155
Power cord
5-m cord plus Type F earthed plug
Gear-rack drive
Capacity
1.5 W
Voltage
24 V AC 50/60 Hz. 24 V DC
Functional range
AC / DC 19.2 to 28.8 V
Duration
116 s
Dust and water ingress protection
IP54
Adjustment force
150 N
Power cord
3 x 0.75 mm25-m cable, without plug
Suction housing
Material
3-mm aluminium
Number of valves
2
Table 1 Specifications
* Measured without air guide plate and grille

Van der Ende Groep · Aartsdijkweg 23, 2676 LE, Maasdijk · Tel: [phone]
IBAN NL71 RABO 0340341610 · CC The Hague 27230471 · VAT-number NL8000.78.378.B01 · [email protected] · www.vanderendegroep.nl
Pagina 5 van 24
1.1.3 Diagram of the system
Diagram showing the main components, numbered and named.
No.
Designation
1
Airmix™ housing
2
Fan
3
Gear-rack drive
4
Upper valve
5
Lower valve
Figure 1 Schematic view of the Airmix™

Van der Ende Groep · Aartsdijkweg 23, 2676 LE, Maasdijk · Tel: [phone]
IBAN NL71 RABO 0340341610 · CC The Hague 27230471 · VAT-number NL8000.78.378.B01 · [email protected] · www.vanderendegroep.nl
Pagina 6 van 24
1.2 Users
Generally, the Airmix™ is not operated directly, but controlled by an operator or user via a control
box. These users or operators must be at least 18 years old, employed by the company where the
Airmix™ is installed, and designated by the management as competent and authorised to operate the
Airmix™.
All those who do not meet the above definition are unauthorised users, and these unauthorised users
may create unsafe situations or risks to themselves or others if they use the Airmix™.
1.3 Use
The Airmix™ is designed to mix hot humid air from cultivation areas with cool dry air from above the
screen cloth in a greenhouse. This circulates air horizontally, and improves the climate distribution in a
greenhouse.
The Airmix™ is not designed to be used for any other purposes than those described above, such as
transporting gases other than low-temperature air (-10 °C to + 50 °C).
1.4 Authorised servicers
The Airmix™ can be serviced by any maintenance company, but Van der Ende is recommended as this
company is familiar with every aspect of the device.
Periodic servicing helps avoid unnecessary costs or failures, and improves reliability.
1.5 Operating environment
Install the Airmix™ on the lowest shelf of the truss lattice. Make a hole in the screen cloth, and
connect this with the opening at the top of the aluminium housing. If the screen cloth is attached to
the upper tube of the truss lattice, use an extension to overcome the height difference. If the
greenhouse has a double screen cloth, install a spacer between the two screen cloths, then connect
this to the Airmix™.
The fan must be installed out of reach of those without special equipment, and the truss must be
strong enough to bear the weight of the fan.
The Airmix™ is not designed for use in any other environment than that described above. The
Airmix™ is not suitable for use in explosive environments.
1.6 Guarantee conditions
The unit is guaranteed for 6 months after first use.
If a claim is made under guarantee, the parts concerned must be presented to the manufacturer for
assessment.
The guarantee is void in the event of any of the following;
Improper use
Repeatedly ignoring the manufacturer’s or supplier’s advice
Unauthorised repair, maintenance or use
Use of inappropriate power supply connections
Use of the machine in an unsuitable environment
Intentional damage or modification of the machine
1.7 Relevant directives
The Airmix™ complies with the provisions in the following directives;
Machinery Directive 2006/42/EC
Low Voltage Directive 2006/95/EC
EMC Directive 2004/108/EC
The Airmix™ is classified as a Class I device according to the Low Voltage Directive.

Van der Ende Groep · Aartsdijkweg 23, 2676 LE, Maasdijk · Tel: [phone]
IBAN NL71 RABO 0340341610 · CC The Hague 27230471 · VAT-number NL8000.78.378.B01 · [email protected] · www.vanderendegroep.nl
Pagina 7 van 24
2. Description
2.1 General
The purpose of the Airmix ™ is to ventilate and dehumidify in an area with a closed screen cloth. The
Airmix™ sucks in air from above the screen, and blows it into the cultivation area below. The system
is actually multifunctional, as it also acts as a horizontal recirculation system. This method of
operation allows ventilation to be controlled, and the screen cloth to be kept closed for longer. The
advantage of this is that it is unnecessary to create a ‘slit’ in the screen when it is cold outside,
thereby preventing pockets of cold (unwanted air flows and temperature differences).
The Airmix™ is fitted with the same fan as the Enfan. The inlet side of this fan is attached to the
aluminium housing. Two valves are mounted in the housing, so air can be sucked in from both above
and below the screen cloth (Figure 2). When the valves are closed, the Airmix™ sucks in air from the
cultivation area, and acts as a horizontal recirculation system. If the valves are open, air is sucked in
from above the screen cloth. The Airmix™ can be used in greenhouses with either single-screen or
double-screen systems.
Since the valves are controlled by the climate computer, the correct proportion of air from above and
below the screen cloth can be obtained. This is controlled on the basis of relative humidity and
temperature.
The Airmix™ can be used where all kinds of vegetable, fruit and ornamental plants are cultivated.
Figure 2 Overview of valve positions
2.2 Transportation and Storage
The Airmix™ is delivered in two parts. It is only necessary to attach the fan to the aluminium housing,
after which the Airmix™ can be suspended.
3. Safety instructions
Always make sure that the plug of the Airmix™ is disconnected from the power supply before working
on it! This prevents the fan starting unexpectedly or unintentionally.
Do not connect the fan or the gear-rack drive to the power supply until assembly has been completed
and the system has been suspended.
Only use self-locking nuts to assemble and mount the Airmix™! Failure to do so may result in parts
vibrating loose and falling off.

Van der Ende Groep · Aartsdijkweg 23, 2676 LE, Maasdijk · Tel: [phone]
IBAN NL71 RABO 0340341610 · CC The Hague 27230471 · VAT-number NL8000.78.378.B01 · [email protected] · www.vanderendegroep.nl
Pagina 8 van 24
4. Installation
This chapter describes installing the Airmix™. The fan still has to be attached to the aluminium
housing. There is also an explanation of how to install the spacer and extension piece. Read the entire
manual before starting work.
4.1 Contents of the installation kit
Quantity
Description
Type
Airmix™
1
Fan
0.38 kW
230 V, 50 Hz
1.7 A
5,000 m3/hour
Insulation class IP 54
1
Power supply cable
5-m cord plus Type F earthed plug
1
Airmix™ (excluding fan)
Incl. gear-rack drive
24 V AC 50/60 Hz. 24 V DC, 1.5 W
operating range AC/DC 19.2 to 28.8 V
duration 116 s
IP54
torque 150 N
5-m 3 x 0.75 mm² cable without plug
8
Attachment material of fan to spacer
Lock nut and washer stainless steel M10
1
Attachment of Airmix™ to truss lattice
2 M8 U-clamps U50x50 or U60x55
4 M8 fender washers
4 M8 hexagonal lock nuts
2
3-mm padding strip
Aluminium strip 50x60x3mm
Extension
1
Extension
Customer-specific component. The length of the
extension depends on the height which has to be
bridged.
Spacer
1
Spacer
Customer-specific component. The length of the
spacer depends on the gap between the two
screen cloths.
1
Attachment of the spacer to the truss
lattice
2 M8 U-clamps U50x50 or U60x55
4 M8 fender washers
4 M8 hexagonal lock nuts
2
3-mm padding strip
Aluminium strip 50x60x3mm
Extra
1
Valve position sensor
600/1 KΩ incl.
2 M5 washers
2 M5 lock nuts
1
Connection of the valve position
sensor to the gear rack
2 Clamp incl.
1 M4x16 hexagonal bolt stainless steel
1 M5x30 hexagonal bolt stainless steel
1 M5x25 internal hexagonal countersunk bolt
stainless steel
2 M5 hexagonal lock nut stainless steel
4 M5 fender washer stainless steel
1 M4 hexagonal lock nut stainless steel
3 M4 fender washer stainless steel
1
Extended suspension bracket
2 extended suspension bracket incl.
4 M8x25 carriage bolt
4 M8 lock nuts
4 M8 washers
Table 2 Contents of the installation kit

Van der Ende Groep · Aartsdijkweg 23, 2676 LE, Maasdijk · Tel: [phone]
IBAN NL71 RABO 0340341610 · CC The Hague 27230471 · VAT-number NL8000.78.378.B01 · [email protected] · www.vanderendegroep.nl
Pagina 9 van 24
4.2 Suspending the Airmix™
4.2.1 Mounting directly under the truss lattice
It is easier to suspend the Airmix™ before attaching the fan to the aluminium housing, so only attach
the fan when the Airmix™ is already suspended. Proceed as follows:
choose a suitable location;
omake sure that any shrinkage of the screen cloth can be compensated by suspending
the Airmix™ in such a way that it can be shifted if necessary towards the centre of
the screen cloth. The degree of shrinkage varies according to the type and age of
cloth, but can reach 15 cm per 100 metres of screen cloth;
omake sure that no objects can obstruct the Airmix™ inlets;
othe fan must be kept of reach unless special equipment, such as a stepladder, is
used.
ocheck that the truss is in good condition;
ocheck if there is a socket less than 5 m away;
oMake sure the Airmix™ is attached to the correct side of the truss lattice. The
Airmix™ must be attached to the side of the truss lattice towards which the screen
cloth profile moves;
use proper tools and equipment;
make sure that the Airmix™ can be installed safely - get help if necessary;
what you will need:
o2 M8 U-clamps U50x50 or U60x55;
o4 M8 fender washers;
o4 M8 lock nuts;
assembly (see Figure 3);
obring the Airmix™ to the place reserved for it;
oattach the Airmix™ to the lower truss lattice (4) with two clamps (1), four M8 fender
washers (2) and four M8 lock nuts (3);
Figure 3 Attaching the Airmix™ to the truss lattice

Van der Ende Groep · Aartsdijkweg 23, 2676 LE, Maasdijk · Tel: [phone]
IBAN NL71 RABO 0340341610 · CC The Hague 27230471 · VAT-number NL8000.78.378.B01 · [email protected] · www.vanderendegroep.nl
Pagina 10 van 24
4.2.1 Mounting with suspension brackets
It is easier to suspend the Airmix™ in combination with the suspension brackets and mounted fan on
the aluminium housing. See chapter 4.3 “attaching the fan” for more information. When the fan is
mounded to the Airmix™ housing proceed as follows:
choose a suitable location;
omake sure that any shrinkage of the screen cloth can be compensated by suspending
the Airmix™ in such a way that it can be shifted if necessary towards the centre of
the screen cloth. The degree of shrinkage varies according to the type and age of
cloth, but can reach 15 cm per 100 metres of screen cloth;
omake sure that no objects can obstruct the Airmix™ inlets;
othe fan must be kept of reach unless special equipment, such as a stepladder, is
used.
ocheck that the truss is in good condition;
ocheck if there is a socket less than 5 m away;
oMake sure the Airmix™ is attached to the correct side of the truss lattice. The
Airmix™ must be attached to the side of the truss lattice towards which the screen
cloth profile moves;
use proper tools and equipment;
make sure that the Airmix™ can be installed safely - get help if necessary;
what you will need:
o2 Suspension bracket;
o2 M8 U-clamps U50x50 or U60x55;
o4 M8x25 Carriage bolt
o8 M8 fender washers;
o8 M8 lock nuts;
assembly (see Figure 4);
oThe holes, in the Airmix™ housing, for the carriage bolts (2) need to be drilled to
Ø11mm;
oAttach the two suspension brackets (3) with four carriage bolts (2), four M8 fender
washers (4) and four M8 lock nuts (5) to the Airmix™;
obring the Airmix™ to the place reserved for it;
oattach the Airmix™ with the suspension brackets (3) to the lower truss lattice (6) with
two clamps (1), four M8 fender washers (4) and four M8 lock nuts (5);
Figure 4 Mounting Airmix™ to suspension brackets