System air DKEX 225-4 Manual

Installation, Operation and Maintenance instruction EN
DKEX Centrifugal Explosion proof fan
KTEX Inline ducted Explosion proof fan

Table of content
1 Introduction .......................................................... 1
1.1 Product description ......................................1
1.2 Intended use ..............................................1
1.3 Document description...................................1
1.4 Product overview DKEX................................1
1.5 Product overview KTEX ................................ 2
1.6 Name plate ................................................3
1.6.1 Classification and Certification............ 3
1.6.2 Type designation ............................. 4
1.7 Product liability............................................ 4
2 Safety .................................................................4
2.1 Safety definitions......................................... 4
2.2 Safety instructions ....................................... 4
2.3 Personal protective equipment ....................... 5
3 Transportation and storage ...................................... 5
4 Installation............................................................ 6
4.1 To do before the installation of the
product......................................................6
4.2 To install the product .................................... 6
4.2.1 To install the KTEX fan......................7
4.3 To connect the ducts to the DKEX fan .............. 7
4.4 To connect the ducts to the KTEX fan............... 7
5 Electrical connection............................................... 9
5.1 To do before the electrical connection .............. 9
5.2 To connect the product to the power
supply.......................................................9
6 Commissioning ..................................................... 9
6.1 To do before the commissioning......................9
6.2 To do the commissioning............................... 9
7 Operation........................................................... 10
7.1 To start the product .................................... 10
7.2 To stop the product .................................... 10
7.2.1 To stop the product in an
emergency................................... 10
8 Maintenance....................................................... 11
8.1 Maintenance schedule................................ 11
8.2 To clean the product................................... 11
8.3 Spare parts .............................................. 11
9 Troubleshooting................................................... 12
10 Disposal........................................................... 13
10.1 To disassemble and discard the parts of the
product.................................................... 13
11 Warranty .......................................................... 14
12 Technical data ................................................... 15
12.1 DKEX ..................................................... 15
12.2 KTEX...................................................... 16
13 Product dimensions ............................................ 17
13.1 Product dimensions DKEX .......................... 18
13.2 Product dimensions KTEX........................... 19
14 Wiring diagrams................................................. 19
14.1 Wiring diagram for motor protection for
ATEX motors ............................................ 20
14.2 Wiring diagram for speed controller for
ATEX motors ............................................ 21
15 Accessory overview ............................................ 22
15.1 Accessory overview DKEX .......................... 22
15.2 Accessory overview KTEX........................... 23
16 EU Declaration of Conformity................................ 24

1 Introduction
1.1 Product description
The DKEX is a explosion proof fan with an casing made from
galvanized steel and intake nozzle from copper.
The KTEX is a explosion proof fan with an casing made from
galvanized steel and brass inlet cone.
The product is not supplied with a safety switch, motor pro-
tection, external speed control or FK fast clamps, these parts
are available and recommended as accessories.
1.2 Intended use
DKEX fans, KTEX fans are used for transport of air or explo-
sive atmospheres with a maximum temperature of 60 °C and
95% air humidity.
The product is intended for installation in indoor environ-
ments. DKEX fan, KTEX fan are applicable for ambient tem-
peratures of between –20 °C and +40 °C.
The product is applicable for transportation of air that con-
tains explosive or flammable media. The product is applica-
ble for locations where there is a risk of explosion.
1.3 Document description
This document contains instructions for installation, operation
and maintenance of the product. The procedures must be
done by approved personnel only.
Speak to Systemair for more information on how to install the
product in different installation locations.
1.4 Product overview DKEX
2
4
5
1
3
1. Duct connection inlet side
2. Motor
3. Duct connection outlet side
4. Name plate
5. Fan impeller (inside casing)
1

1.5 Product overview KTEX
1
2
3
4
5
6
1. Fan impeller
2. Connection box
3. Casing
4. Motor hatch
5. Name plate
6. Rotation direction arrow
2

1.6 Name plate
Systemair Sverige AB
Industrivägen 3
739 30 Skinnskatteberg SE
www.systemair.com
The PTC shall be connected to a triggering device
certified acording to ATEX directive
2460 II 2G
V ~Hz W A rpm
IP kg
°C
V
7
1
25
4
3
8
9
10
11 12 13
6
15
16
14
1. Type designation: Product name, dimension and motor
type. Refer to 1.6.2 Type designation.
2. Frequency, Hz
3. Input power, W
4. Country of production
5. Current, A
6. Revolutions per minute
7. Voltage, V
8. IP class, enclosure class
9. Ambient temperature
10. Speed controllable
11. Identification number of Notified Body
12. Equipment group II is intended for use in areas with ex-
plosive gas, except mining gas.
13. Category 2, zone 1, G = potentially explosive gas mix-
ture can be occasionally expected to during normal
operation.
14. Scannable code 1
15. Explosion proof classification. Refer to 1.6.1 Classifica-
tion and Certification
16. Certification number. Refer to 1.6.1 Classification and
Certification
Note:
The data on the name plate applies to “standard air” that is
specified in the standard ISO5801.
1.6.1 Classification and Certification
Product name Certification Classification
DKEX 225–355
Presafe 17 ATEX 9970 X Ex eb IIB + H2T3 Gb
KTEX 50-30–70-40
Ex eb h IIB + H2T3 Gb
A B C D E
A. Explosion-protected material
B. Type of protection, e = increased protection against sparks
C. Apparatus group IIB (also applies to IIA)+H2also applies to hydrogen.
D. Temperature class T3, maximum surface temperature for fan housing and motor is 200 °C, can be used for gas mixtures
with ignition temperature exceeding 200 °C.
E. EPL, Equipment Protection Level.
3
1. Use a mobile device to scan the scannable code

1.6.2 Type designation
Product name DKEX KTEX
Dimension 225 50-25
250 50-30
280 60-30
315 60-35
355 70-40
Motor type 3–phase, 230 V 3–phase, 230 V
3–phase, 380 V 3–phase, 380 V
3–phase, 400 V 3–phase, 400 V
3–phase, 415 V 3–phase, 415 V
1.7 Product liability
Systemair is not liable for damages that the product causes
in these conditions:
• The product is incorrectly installed, operated or
maintained.
• The product is used together with accessories that are not
original accessories from Systemair.
• The product is used without motor protection.
2 Safety
2.1 Safety definitions
Warnings, cautions and notes are used to point out specially
important parts of the manual.
Warning
If you do not obey these instructions,
there is a risk of death or injury.
Caution
If you do not obey these instructions,
there is a risk of damage to the product,
other materials or the adjacent area.
Note:
Information that is necessary in a given situation.
2.2 Safety instructions
Warning
Read the warning instructions that follow
before you do work on the product.
• Read this manual and make sure that you understand the
instructions before you do work on the product.
• Obey local conditions and laws.
• The ventilation contractor and the operator are responsi-
ble for correct installation and intended use.
• Keep this manual at the location of the product.
• Do not install or operate the product if it is defective.
• Do not remove or disconnect safety devices.
• Make sure that you can read all warning signs and labels
on the product when it is installed. Replace labels that
have damage.
• Only permit approved personnel to work on the product
and to be in the adjacent area during all work on the
product.
• Make sure that you know how to stop the product quickly
in an emergency.
• Use applicable safety devices and personal protective
equipment during all work on the product.
• Before you do work on the product, stop the product and
wait until the fan impeller stops. Make sure that there is no
voltage on the motor terminals.
• If the maintenance is not correctly and regularly done,
there is risk of injury and damage to the product.
• Only do the maintenance as given in this manual. Speak
to Systemair technical support if other servicing is
necessary.
• Sound levels exceeding 70 dB(A) may occur depending
on model and size. Visit www.systemair.com for more de-
tailed information about your product.
• The product is not to be used by persons, including chil-
dren, with reduced physical, sensory or mental
4

capabilities, or lack of experience and knowledge, unless
they have been given supervision or instruction.
• Do not allow children to play with the product.
2.3 Personal protective
equipment
Use personal protective equipment during all work on the
product.
• Approved eye protection
• Approved protective helmet
• Approved hearing protection
• Approved protective gloves
• Approved protective shoes
• Approved work clothing
3 Transportation and
storage
Warning
Make sure that the product does not
become damaged or wet during
transportation. A damaged or wet
product can cause fire or electric shock.
• Before you move the product to the installation location,
examine the packaging for damages.
• Make sure that the impeller do not touch parts of the fan
casing.
• Do not move the product by the cables, terminal box, fan
impeller, protection grille or inlet cone.
• If lifting equipment is used, make sure that the lifting
equipment can hold the weight of the product. Refer to the
name plate for information. Do not lift the product by the
packaging.
Warning
Do not walk below a lifted product.
• Keep the correct side of the packaging up during
transportation. Refer to the arrows on the packaging.
• Load and unload the product carefully.
• Keep the product in a dry and clean location during
storage. Make sure that the ambient temperature during
storage is between –10 and +30 °C. A stable ambient
temperature prevents damage from condensation.
• Keep the product in storage for maximum 1 year.
5

4 Installation
Warning
It is not permitted to install components
with unprotected aluminium or steel
surface before or after the product or in
the direct air stream. To prevent an
aluminothermic reaction, a surface
protection is necessary that meet the
crosscut test parameter of 2 / EN ISO
2409.
Warning
Rust particles must not be present in the
air stream
Note:
Duct installations must be carried out so that enclosure
class IP 20 (mesh width less than 12 mm) is fulfilled on the
inlet and outlet side. Parts that assure the IP classification
must be correctly designed with regard to strength and
material.
Note:
All fans can be installed in any angle.
4.1 To do before the installation
of the product
• Make sure that you have the necessary installation
accessories:
– Refer to 15 Accessory overview for an overview of the
accessories.
– To decrease vibrations transmitted from the product to
the duct system, Systemair recommends to install vi-
bration dampers, fast clamps or flexible connections.
– If you install the product with free suction or free dis-
charge, it is necessary to install a protection grille.
Make sure that the protection fulfils minimum IP 20 ac-
cording to the standard EN 60529.
• Consider the ambient temperature, humidity, dirt in the en-
vironment and the air’s corrosive properties.
• Use installation material with fire resistance rating for the
installation location.
• Examine the packaging for transportation damage and re-
move the packaging from the product carefully.
• Examine the product and all components for damage.
• Make sure that the motor effect and the fan performance
agrees with the expectations at the installation location.
• Make sure that the information on the name plate and the
motor name plate agrees with the operation conditions.
• Install the product in a location where there is space for
commissioning, troubleshooting and maintenance.
• Make sure that the installation location is clean and dry,
for full safety during electrical work.
• Make sure that the installation surface has sufficient ca-
pacity to hold the weight of the product.
• Refer to the airflow direction arrows on the name plate or
on the product to install the product in the correct position.
• Make sure that all cable glands are tight against the ca-
bles to prevent leaks.
4.2 To install the product
Note:
All fans can be installed in any angle.
1Install the product with applicable installation equipment,
such as pendulum bars or wires from the ceiling, or appli-
cable wall or floor mounting brackets.
Pendulum bars, wires and nuts or other installation
equipment are not supplied by Systemair.
• If the product is installed on the floor, add insulation
below the product to prevent unwanted noise and
vibrations.
• If the product is installed near a wall, keep a distance
of minimum 400 mm from the product to the wall to
prevent unwanted vibrations.
6

4.2.1 To install the KTEX fan
1To open the service lid and access the motor or the con-
nection box, remove the 2 screws on the top of the serv-
ice lid.
4.3 To connect the ducts to the
DKEX fan
Note:
Systemair recommends to use flexible connections to at-
tach the duct to the product. Flexible connections are
available as accessories.
1Install the flexible connection USE on the outlet. Use
guide rails to attach the flexible connections to the duct.
Guide rails are not supplied by Systemair.
Flexible connection USE is available as an accessory.
Note:
Installation example is only a guide for installation. The di-
mensioning of suspension devices must be carried by the
installer and adapted to the prevailing conditions. Installa-
tion components mentioned in the text are accessories
and not part of the ATEX certification.
2Install a circular duct on the inlet using flexible connec-
tion ISE. Fasten the flexible connection ISE to the fan
casing using self-drilling screws.
Self-drilling screws are not supplied by Systemair.
Flexible connection ISE is available as an accessory.
3If you install the product near a duct bend, do these
steps to prevent vibrations, unwanted noise and de-
creased air pressure:
a. Measure the distance (A) between the product and
the duct bend.
b. Make sure that the distance (A) is a minimum of 2.5
x the diameter (B) of the duct system. For circular
ducts, (B) is the nominal diameter. For rectangular
ducts, (B) is the hydraulic diameter.
AA
B
4.4 To connect the ducts to the
KTEX fan
Note:
Systemair recommends to use flexible connections to at-
tach the duct to the product. Flexible connections are
available as accessories.
7

1If applicable, put flexible connections on each side of the
product and use guide rails to connect the product and
the flexible connections. Guide rails are not supplied by
Systemair.
Note:
Installation example is only a guide for installation. The di-
mensioning of suspension devices must be carried by the
installer and adapted to the prevailing conditions. Installa-
tion components mentioned in the text are accessories
and not part of the ATEX certification.
2Put the ducts on each side of the product and the at-
tached flexible connections. Use guide rails to attach the
flexible connections to the ducts.
3If you install the product near a duct bend, do these
steps to prevent vibrations, unwanted noise and de-
creased air pressure:
a. Measure the distance (A) between the product and
the duct bend.
b. Make sure that the distance (A) is a minimum of 2.5
x the diameter (B) of the duct system. For circular
ducts, (B) is the nominal diameter. For rectangular
ducts, (B) is the hydraulic diameter.
AA
B
8

5 Electrical connection
5.1 To do before the electrical
connection
• Make sure that the electrical connection agrees with the
product specification on the motor name plate.
• Make sure that the environment for electrical connection
is clean and dry.
• Make sure that the wiring diagram that is included with the
supply of the product agrees with the terminals in the con-
nection box.
5.2 To connect the product to the
power supply
• Complete the electrical connection for the motor. Refer to
14 Wiring diagrams.
• Make sure that the cross section of the protective earthing
is equal to or larger than the cross section of the phase
conductor.
• Install a circuit breaker in the permanent electrical installa-
tion, with a contact opening of a minimum 3 mm at each
pole.
• If a residual current device (RCD) is installed, make sure
that it is an all-current sensitive RCD.
Warning
Do not use VFD (Variable Frequency
Drive) for speed control.
Note:
ATEX approved motor protection is required. Systemair
recommend U-EK230E motor protection.
6 Commissioning
Caution
• If strong vibrations occur during
commissioning, immediately increase
or decrease the fan speed until the
vibrations are decreased. Continuous
strong vibrations can cause damage
to components.
• Do not increase the fan speed to a
higher rpm value than the maximum
value that is given on the name plate.
The commissioning report is found at www.systemair.com.
6.1 To do before the
commissioning
• Make sure that the installation and electrical connection
are correctly done.
• Make sure that PTC resistors and monitoring units are
professionally connected and fully functional.
• Verify that connection data corresponds with the data on
the rating plate: Max. voltage +6%, -10%, according to
IEC 38. Rated current/power must not be exceeded at
rated voltage.
• Do not have lower static back pressure than the minimum,
refer to tables in 12 Technical data.
• The voltage of controllable fans is permitted to vary be-
tween 15% and 100% of nominal voltage with a transform-
er and between 25% and 100% with a thyristor.
• Make sure that the motor protection function.
• Make sure that the impeller do not hit parts of the fan
housing (min. 3 mm).
• Visually examine the product and accessories for damage.
• Make sure that the safety devices are correctly installed.
• Make sure that there are no blockages in the air intake
and the air outlet.
• Make sure that installation material and unwanted objects
are removed from the product and the ducts.
6.2 To do the commissioning
1Set the installed safety switch in the OFF position.
2If it is possible to get access to the fan impeller, do the
steps that follows:
a. If it is necessary, remove parts of the installation.
b. Turn the fan impeller by hand and make sure that it
turn easily.
c. Record the result in the commissioning report.
3Make sure to turn the product in a direction that agrees
with the related arrow on the product.
a. Record the result in the commissioning report.
4If you removed parts of the installation to get access to
the fan impeller, install the removed parts again.
5Set the installed safety switch in the ON position.
6Start the product.
7Set the minimum operation speed.
9

8Increase the operation speed gradually to the maximum
operation speed.
a. Examine the vibrations in the casing and the bearing
areas at all speed levels.
b. Make sure that the vibrations agree with the specifi-
cations in DIN ISO 14694.
c. Make sure that none of the speed levels cause un-
wanted noise in the product.
d. Record the result in the commissioning report.
9Record the necessary data in the commissioning report.
7 Operation
7.1 To start the product
1Make sure that the speed controller is set to position “0”.
2Adjust the fan speed with five fixed steps on the speed
controller.
Warning
Do not use VFD (Variable Frequency
Drive) for speed control.
7.2 To stop the product
1Set the installed speed controller in the OFF position.
Refer to the instruction manual for the installed speed
controller.
2Set the installed safety switch in the OFF position.
7.2.1 To stop the product in an
emergency
• Set the installed safety switch in the OFF position.
10

8 Maintenance
Warning
Set the installed safety switch in the OFF position before you do the maintenance unless the instructions tell
you differently. Make sure that the safety switch is not accidentally set in the ON position.
8.1 Maintenance schedule
The intervals are calculated from continuous operation of the product.
Maintenance task Usual operation
conditions
Unusual operation conditions. 1
Each 6
months
Each
year
Each 3
months
Each 6
months
Each
year
Visually examine the product and its components for damage,
corrosion and dirt.
X X
Examine the fan impeller for damage and imbalance. X X
Clean the product and the ventilation system. X X
Do a check of all fasteners and make sure that they are fully
tightened.
X X
Make sure that the product and its components are correctly
operated.
X X
Measure the power consumption and compare the result with
the information on the name plate.
X X
If vibration dampers are installed, make sure that they operate
correctly and examine them for damage and corrosion.
X X
Make sure that the electrical protective equipment and the me-
chanical protective equipment operates correctly.
X X
Make sure that you can read the name plates of the product. X X
Examine all cable connections for damage. Make sure that
the cable glands are tight against the cables.
X X
If flexible connections are installed, examine them for damage. X X
1. The unusual operation conditions are classified as follows: If a stable ambient temperature is higher than 30 °C or lower than -10° C, if the
temperature changes are large or if very contaminated air is transported.
8.2 To clean the product
Caution
• Do not clean the product with a high-
pressure washer.
• Do not clean the product with steel
brushes or sharp objects.
• Do not bend the fan impeller blades.
• Be careful not to move the balance
weights on the fan impeller.
• Remove dirt from the fan and the duct.
• If access to the fan impeller is possible, clean the fan im-
peller with a moist cloth or soft brush.
8.3 Spare parts
Note:
Reparation or replacement of components is not permitted
on DKEX, KTEX fans.
11

9 Troubleshooting
Note:
If you cannot find a solution to your problem in this section, speak to Systemair technical support.
Problem Cause Solution
The product does not operate smoothly.
The fan impeller is not correctly
balanced.
Speak to Systemair technical support.
There is dirt on the fan impeller. Clean the fan impeller carefully. Refer
to 8.2 To clean the product.
The fan impeller has damages or
deformations because the transported
air contains aggressive media.
Speak to Systemair technical support.
The fan impeller does not turn in the
correct direction.
Make sure that the electrical connection
is correctly done.
The fan impeller has deformations
because of too high temperatures. • Make sure that the temperature of
the transported air is not higher than
the value on the name plate.
• Replace the product.
There are unusually strong vibrations in
the product or the duct system.
Make sure that the product is correctly
installed. Do a check of the duct system.
The product is operated in a resonant
frequency range.
Increase or decrease the fan speed
until the product operates smoothly.
Refer to 6 Commissioning.
The air output is not sufficient.
The fan impeller does not turn in the
correct direction.
Make sure that the electrical connection
is correctly done.
The electrical connection is not
correctly done.
Make sure that the electrical connection
agrees with the wiring diagrams.
The air pressure is too low because of
incorrect installation.
Do the necessary changes in the duct
system and installed components to
increase the air pressure. Refer to 6
Commissioning.
The airflow shutters are closed or not
fully open.
Adjust the airflow shutters.
There is blockage in the air inlet or the
duct system.
Remove the blockage.
The product is not applicable for the
installation location.
Make sure that the product is applicable
for the installation location.
There is unusual noise when the
product starts or operates.
There is strain in the connections of the
duct system.
Loosen the connections, align the parts
of the duct system correctly and tighten
the connections.
12

Problem Cause Solution
Thermal contacts, PTC or resistors are
released.
The fan impeller does not turn in the
correct direction.
Make sure that the electrical connection
is correctly done.
A phase loss occurred. If the motor is a 3-phase motor, make
sure that no phase is missing.
The motor is overheated. • Do a check of the motor cooling
impeller.
• If it is possible, measure the
resistance to do a check of the motor
winding.
The capacitor is not connected or not
correctly connected.
Connect the capacitor correctly. Refer
to the included motor wiring diagram.
There is blockage in the motor. Speak to Systemair technical support.
The fan speed does not get the nominal
value.
Defective motor winding. If it is possible, measure the resistance
to do a check of the motor winding.
The speed control is not correctly set. Set the speed control correctly.
The fan impeller cannot turn freely
because of mechanical blockage.
Remove the blockage.
Phase loss occurs. If the motor is a 3-phase motor, make
sure that no phase is missing.
The motor does not rotate.
A component in the power supply is
defective.
Do a check of the power supply.
Replace defective components and
connect the power supply again.
The electrical connection is not
correctly done.
Make sure that the electrical connection
agrees with the wiring diagrams.
The motor protection is released
because the motor is overheated.
Let the motor become cool. Reset the
motor protection. Find the cause of the
overheated motor.
A phase loss occurred. If the motor is a 3-phase motor, make
sure that no phase is missing.
The electronic components or the motor
is overheated.
The motor is overloaded or the ambient
temperature is too high.
Let the motor become cool. Reset the
motor protection. Find the cause of the
overheated motor.
The motor is overloaded. Make sure that the product is applicable
for the installation location.
The ambient temperature is too high. Make sure that the product is applicable
for the installation location.
The cooling of the product is not
sufficient.
Make sure that the space around the
motor is sufficient to keep the
temperature down.
10 Disposal
The product follows the WEEE directive. This symbol on the
product or the packaging of the product shows that this
product is not domestic waste. The product must be recycled
at an approved disposal location for electrical and electronic
equipment.
10.1 To disassemble and discard
the parts of the product
1Disconnect and disassemble the product in the opposite
sequence of electrical connection and installation.
2Recycle the product parts and the packaging at an appli-
cable disposal location.
3Obey the local and national requirements for disposal.
13

11 Warranty
For warranty claims, send a written maintenance plan and
the commissioning report to Systemair. The warranty is only
applicable for these conditions:
• The product is correctly installed and operated.
• Motor protection is used.
• The instructions in the data sheets are obeyed.
• Maintenance instructions are obeyed.
• A product that is not operated continuously is operated for
a minimum of 1 hour each month.
14

12 Technical data
12.1 DKEX
Rated data
Fan type Voltage/Frequency P
(kW)
I1
A
rpm
min-max
Isol.
Class
Weight
kg
Min.
Flow
m3/h
Max.
Flow
m3/h
DKEX 225-4
230V(Δ) 3~ 50 Hz
0.5
1.52
490-1470 F 13 200 1800
380-400V(Y) 3~ 50Hz 0.88
DKEX 250-4
230V(Δ) 3~ 50 Hz
0.9
3.1
460-1470 F 17 200 2600
380-415V(Y) 3~ 50Hz 1.8
DKEX 280-4
230V(Δ) 3~ 50 Hz
1.3
3.9
390-1475 F 24 200 3150
380-415V(Y) 3~ 50Hz 2.25
DKEX 315-4
230V(Δ) 3~ 50 Hz
2.1
6.8
555-1495 F 35.5 200 3850
380-415V(Y) 3~ 50Hz 3.9
DKEX 355-6
230V(Δ) 3~ 50 Hz
1.8
6.5
310-980 F 39 200 5300
380-415V(Y) 3~ 50Hz 3.76
KTEX 50-25-4
230V(Δ) 3~ 50Hz
0.5
1.52
500–1470 F 17 200 1800
380-400V(Y) 3~ 50Hz 0.88
KTEX 50-30-4
230V(Δ) 3~ 50Hz
0.9
3.1
470-1490 F 22.5 200 2560
380-415V(Y) 3~ 50Hz 1.8
KTEX 60-30-4
230V(Δ) 3~ 50 Hz
1.3
3.9
415-1450 F 30.5 200 3150
380-415V(Y) 3~ 50Hz 2.25
KTEX 60-35-4
230V(Δ) 3~ 50 Hz
2.1
6.8
590-1480 F 35.5 200 3750
380-415V(Y) 3~ 50Hz 3.9
KTEX 70-40-6
230V(Δ) 3~ 50 Hz
1.6
6.2
330-985 F 48 200 5100
380-415V(Y) 3~ 50Hz 3.6
1. The current may only exceed the rated currents on the rating plate by the ratio (%) given as long as the total power consumption does not
exceed the rated power given.
Min. static back pressure (Pa)
Fan type Imax 1 2 3 4 5
Cntrl.(A)
DKEX 225-4
1.64 0 0 0 55 125
0.95 0 0 0 55 125
DKEX 250-4
3.27 0 0 0 10 60
1.9 0 0 0 10 60
DKEX 280-4
4.35 0 0 45 155 300
2.5 0 0 45 155 300
DKEX 315-4
8 0 0 15 40 300
4.6 0 0 15 40 300
15

Min. static back pressure (Pa)
Fan type Imax 1 2 3 4 5
Cntrl.(A)
DKEX 355-6
6.5 0 0 0 0 0
3.76 0 0 0 0 0
KTEX 50-25-4
1.64 0 0 0 40 110
0.95 0 0 0 40 110
KTEX 50-30-4
3.27 0 0 0 0 40
1.9 0 0 0 0 40
KTEX 60-30-4
4.35 0 0 30 105 250
2.5 0 0 30 105 250
KTEX 60-35-4
8 0 0 0 0 225
4.6 0 0 0 0 225
KTEX 70-40-6
6.5 0 0 0 0 0
3.76 0 0 0 0 0
Step 1 2 3 4 5
Voltages 230V 1~ 80V 105V 130V 160V 230V
Voltages 400V (Y) 3~ 95V 145V 190V 240V 400V
Voltages 230V 3~(Δ) 55V 85V 110V 140V 230V
12.2 KTEX
Rated data
Fan type
Voltage/Frequence
P
(kW) I1
A
rpm
min-max
Isol.
Class
Weight
kg
Min.
Flow
m3/h
Max.
Flow
m3/h
KTEX 50-25-4
230V(Δ) 3~ 50Hz
0.5
1.52
500–1470 F 17 200 1800
380-400V(Y) 3~ 50Hz 0.88
KTEX 50-30-4
230V(Δ) 3~ 50Hz
0.9
3.1
470-1490 F 22.5 200 2560
380-415V(Y) 3~ 50Hz 1.8
KTEX 60-30-4
230V(Δ) 3~ 50 Hz
1.3
3.9
415-1450 F 30.5 200 3150
380-415V(Y) 3~ 50Hz 2.25
KTEX 60-35-4
230V(Δ) 3~ 50 Hz
2.1
6.8
590-1480 F 35.5 200 3750
380-415V(Y) 3~ 50Hz 3.9
KTEX 70-40-6
230V(Δ) 3~ 50 Hz
1.6
6.2
330-985 F 48 200 5100
380-415V(Y) 3~ 50Hz 3.6
1. The current may only exceed the rated currents on the rating plate by the ratio (%) given as long as the total power consumption does not
exceed the rated power given.
16

Min. static back pressure (Pa)
Fan type Imax 1 2 3 4 5
Cntrl.(A)
KTEX 50-25-4
1.64 0 0 0 40 110
0.95 0 0 0 40 110
KTEX 50-30-4
3.27 0 0 0 0 40
1.9 0 0 0 0 40
KTEX 60-30-4
4.35 0 0 30 105 250
2.5 0 0 30 105 250
KTEX 60-35-4
8 0 0 0 0 225
4.6 0 0 0 0 225
KTEX 70-40-6
6.5 0 0 0 0 0
3.76 0 0 0 0 0
13 Product dimensions
Note:
If the unit of measure is not specified, the dimensions are given in millimetres.
Note:
The arrow in the dimension drawing shows the direction of the airflow.
17

13.1 Product dimensions DKEX
AB
G
E
F
D C
H
A B C D E F G H 1
DKEX 225 280 133 145 196 196 367 445 337
DKEX 250 315 154 165 216 243 410 492 375
DKEX 280 357 169 180 230 248 453 547 413
DKEX 315 400 188 203 254 276 515 615 465
DKEX 355 450 213 227 278 320 574 689 489
1. Minimum dimensions to remove the motor out of casing
18