System air IV Smart AC User manual

Document translated from English | 315802 · 002
Jet fan — IV Smart AC, IV Smart EC, IV Smart EC CO
GB Installation and Operating Instructions...........2 DE Montage- und Betriebsanleitung ................26

| 002
GB
Installation and Operating Instructions GB
© Copyright Systemair AB
All rights reserved
E&OE
Systemair AB reserves the rights to alter their products without notice.
This also applies to products already ordered, as long as it does not affect the previously agreed specifications.

| 002
Contents
1 General information.........................................5
1.1 Notice symbols......................................5
1.1.1 Instruction symbols.....................5
2 Safety notes ..................................................5
2.1 Personnel .............................................6
2.2 Personal protective equipment..................6
2.3 5 rules of electrical safety ........................6
3 Warranty.......................................................6
4 Delivery, transport, storage ...............................6
4.1 Safety information..................................6
4.2 Delivery ...............................................7
4.3 Transport..............................................7
4.3.1 Safety information......................7
4.4 Storage................................................7
5 Description IV Smart.........................................8
5.1 IV Smart EC equipped with an EC
motor..................................................8
5.2 IV Smart AC — equipped with an AC
motor..................................................8
5.3 IV Smart EC—CO — equipped with a
carbon monoxide control unit....................8
5.3.1 Carbon monoxide control
unit.........................................8
5.3.2 Information on the effects of
CO on humans ...........................8
5.4 Dimensions...........................................9
5.5 Technical data of the fan..........................9
5.6 Technical data of the controller................ 10
5.7 Motor data ......................................... 10
5.8 Intended use of all IV Smart
versions ............................................. 10
5.9 Incorrect use ....................................... 10
5.10 Terminal boxes .................................... 10
6 Name plate and type key ................................ 11
7 Installation................................................... 12
7.1 Preconditions ...................................... 12
7.2 Installation on the ceiling ....................... 12
8 Electrical connection ...................................... 13
8.1 Safety information /
Preconditions ...................................... 13
8.2 Preconditions ...................................... 13
8.3 Connection ......................................... 13
8.3.1 Wiring diagram IV Smart
AC ........................................13
8.3.2 Wiring diagram IV Smart
EC.........................................14
8.3.3 Wiring IV Smart EC-CO ............... 15
8.4 Protective grounding wire ...................... 16
8.5 Residual current circuit breaker................ 16
8.6 Protecting the motor............................. 16
9 Commissioning ............................................. 16
9.1 Safety information................................ 16
9.2 Preconditions ...................................... 16
9.3 Commissioning Report........................... 17
9.4 Tests before activation .......................... 17
9.5 Tests (AC motor).................................. 17
9.6 Tests (EC motor) .................................. 17
9.7 Tests when activated EC CO
version ..............................................17
9.7.1 Function test ........................... 17
9.7.2 Warm-up time ......................... 18
9.7.3 Visual and audible
display................................... 18
10 Operation....................................................18
10.1 Safety information................................ 18
10.2 Preconditions ...................................... 18
11 Troubleshooting/maintenance/repair/CO
alarm..........................................................19
11.1 Safety information................................ 19
11.2 Troubleshooting Fan ............................. 19
11.3 Alarm and fault handling Carbon
monoxide control unit ........................... 19
11.3.1 Thresholds for fault
displays.................................. 20
11.3.2 Potential-free alarm
contact .................................. 20
11.3.3 Behaviour in the event of a CO
alarm and fault handling ............ 20
11.4 Maintenance....................................... 20
11.5 Spare parts ......................................... 21
12 Cleaning......................................................21

| 002
Contents GB
12.1 Safety information................................ 21
12.2 Procedure........................................... 21
13 Deinstallation/dismantling............................... 22
14 Disposal......................................................22
15 EU Declaration of conformity............................ 23
16 Commissioning Report.................................... 24

GB General information | 5
1 General information
1.1 Notice symbols
Danger
Direct hazard
Failure to comply with this warning will lead directly to death or to serious injury.
Warning
Potential hazard
Failure to comply with this warning may lead to death or serious injury.
Caution
Hazard with a low risk
Failure to comply with this warning may lead to moderate injuries.
Important
Hazard with risk of damage to objects
Failure to comply with this warning will lead to damage to objects.
Note:
Useful information and instructions
1.1.1 Instruction symbols
Instruction Instruction with xed sequence
♦Carry out this action 1. Carry out this action
♦(if applicable, further actions) 2. Carry out this action
3. (if applicable, further actions)
2 Safety notes
Planners, plant builders and operators are responsible for the proper assembly and intended use.
♦Read the operating instructions completely and carefully.
♦Keep the operating instructions and other valid documents, such as the circuit diagram or motor instructions, with
the fan. They must always be available at the place of use.
♦Observe and respect local conditions, regulations and laws.
♦Only use the fan in a awless condition.
♦Provide generally prescribed electrical and mechanical protective devices.
♦During installation, electrical connection, commissioning, troubleshooting, and maintenance, secure the location and
premises against unauthorised access.
♦Do not circumvent any safety components or put them out of action.
♦Keep all the warning signs on the fan complete and in a legible condition.
♦The device is not to be used 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.
♦Do not allow children to play with the device.
| 002

6|Warranty GB
2.1 Personnel
The fan may only be used by qualified, instructed and trained personnel. The persons must know the relevant safety di-
rectives in order to recognise and to avoid risks. The individual activities and qualifications can be found in Table 1 Qual-
ifications, page 6.
Table 1 Qualifications
Activities Electrical expert or
matching qualification
Fitter or matching
qualification
Trained personnel (see
following note)
Storage, operation,
transport, cleaning,
disposal
X
Electrical connection,
commissioning, electrical
disconnection
X
Installation, disassembly X
Maintenance X X
Repair Smoke extraction fans and EX fans only by agreement with Systemair.
Note:
The operator is responsible for ensuring that personnel are instructed and have understood the contents of
the operating instructions. If something is unclear, please contact Systemair or its representative.
2.2 Personal protective equipment
Wear protective equipment during all work in the vicinity of the fan.
• protective working clothes
• protective working shoes
• protective working gloves
• helmet
• goggles
• hearing protection
2.3 5 rules of electrical safety
• Disconnect (disconnection of the electrical system from live components at all terminals)
• Prevent reactivation
• Test absence of voltage
• Ground and short-circuit
• Cover or restrict adjacent live parts
3 Warranty
The warranty for our products is determined by the contractual stipulations, our offers and our Terms and Conditions.
Warranty claims presuppose that the product is properly connected, operated according to data sheets and serviced as
needed. A correct commissioning report must also be presented upon request. Please find the commissioning report at-
tached to this document.
4 Delivery, transport, storage
4.1 Safety information
Warning: Risk from rotating fan blades
♦Prevent access by unauthorised persons by safety personnel or access protection.
Warning: Suspended loads
♦Wear protective equipment during all work in the vicinity of the fan, details see 2.2 Personal protective equipment,
page 6.
♦Do not walk under suspended loads.
| 002

GB Delivery, transport, storage | 7
♦Make sure that there is nobody under a suspended load.
4.2 Delivery
Each fan leaves our plant in an electrically and mechanically proper condition. We recommend transporting the fan to
the installation site in the original packaging.
Checking delivery
♦Check the packaging and the fan for transport damage. Any findings should be noted on the cargo manifest.
♦Check completeness of the delivery.
Unpacking
Warning
When opening the transport packaging, there is a risk of damage from sharp edges, nails, staples,
splinters etc.
♦Unpack the fan carefully.
♦Check the fan for obvious transport damage.
♦Only remove the packaging shortly before assembly.
♦Wear protective equipment during all work in the vicinity of the fan, details see 2.2 Personal protective
equipment, page 6.
4.3 Transport
4.3.1 Safety information
Warning: Electrical or mechanical hazards due to fire, moisture, short circuit or malfunction.
♦Never transport the fan by the connecting wire, terminal box, rotor, protection grille, inlet cone or silencer.
♦In open transport, please make sure that no water can penetrate into the motor or other sensitive parts.
♦We recommend transporting the fan to the installation site in the original packaging.
Caution: If transported without care during loading and unloading, the fan may be damaged.
♦Load and unload the fan carefully.
♦Use hoisting equipment that is suitable for the weight to be hoisted.
♦Observe the transportation arrows on the packaging.
♦Use the fan packaging exclusively as transport protection and not as a lifting aid.
4.4 Storage
♦Store the fan in the original packaging in a dry, dust-free location protected against weather.
♦Avoid the effects of extreme heat or cold.
Important
Hazard due to loss of function of the motor bearing
♦Avoid storing for too long (recommendation: max. 1 year).
♦Turn the rotor manually every three months, wear safety gloves when doing this.
♦Check that the motor bearing functions properly before installation.
| 002

8|Description IV Smart GB
5 Description IV Smart
5.1 IV Smart EC equipped with an EC motor
The fans are driven by two EC motors. These motors are delivered with a pre-wired potentiometer (0–10 V) that allows
you to easily find the required working point of the fan. All motors are suitable for 50/60 Hz. The input voltage for sin-
gle-phase units can vary between 200 and 277 V.
5.2 IV Smart AC — equipped with an AC motor
The fans are driven by two AC motors. All motors are suitable for 50/60 Hz.
5.3 IV Smart EC—CO — equipped with a carbon monoxide control unit
The fans are driven by two EC motors (see 5.1 IV Smart EC equipped with an EC motor, page 8). The fan and the control
unit are pre—wired and ready for use.
5.3.1 Carbon monoxide control unit
The CO control unit controls two EC fans with a 0–10 V control signal originating from a CO sensor. Both fans are con-
trolled with the same 0–10 V signal and monitored for fan failure. The CO alarm is triggered based on the threshold and
time specifications of DIN EN 50291-1.
5.3.2 Information on the effects of CO on humans
Warning
This CO control unit is designed to protect people from the acute effects of carbon monoxide. It cannot
prevent the chronic effects of carbon monoxide exposure. The CO control unit can not fully protect people at
special risk, such as those with particular medical conditions. In cases of doubt, consult a doctor.
The table below sets out the symptoms, the corresponding CO concentrations and lengths of time that a person needs
to be exposed to this concentration until symptoms occur.
Table 2 Influence of carbon monoxide on the human body
CO concentration Symptoms Time until occurrence of symptoms
30 ppm Maximum workplace concentration for 8 hours of
work, no symptoms
-
100 ppm Even after a prolonged period, no symptoms -
200 ppm Headache 2…3 h
300 ppm Mild headache, dizziness, weakness, nausea 2…3 h
400 ppm Frontal headache
Life-threatening
1…2 h
3 h
800 ppm Headache, dizziness, nausea, convulsions Within 45 min
1600 ppm Headache, dizziness and nausea
Loss of consciousness
Possible death
Within 20 min
Within 2 h
Within 1 h
3200 ppm Headache, dizziness and nausea
Death
Within 5…10 min
Within 25…30 min
8000 ppm Death A few minutes
| 002

GB Description IV Smart |9
5.4 Dimensions
169
760
36 140
150
800
700
8
503
173 360
20
Fig. 1 Dimensions IV Smart
5.5 Technical data of the fan
• IV Smart AC: Temperature range [°C] of transported air = -25 to 55
• IV Smart EC: Temperature range [°C] of transported air = -25 to 55
• IV Smart EC CO: Temperature range [°C] of transported air = -20 to 40
• Voltage/current/enclosure class/weight/impeller diameter = see name plate
• Sound pressure [dB(A)] = see data sheet
Note:
Further technical data can be found on the data sheet of your fan.
| 002

10 |Description IV Smart GB
5.6 Technical data of the controller
Voltage = 100…240 VAC
Frequency = 50…60 Hz
Table 3 CO control unit components
Component Function
Fan Two fans with a 0-10 V control input and hall output, for ventilation of the
room being monitored.
CO sensor CO sensor with 4…20 mA measuring signal output that reflects a 0…300
ppm CO concentration.
External alarm device (optional) Connection of an alarm siren or alarm light
5.7 Motor data
The motor data can be found on the name plate of the motor, or in the technical documents of the motor
manufacturer.
5.8 Intended use of all IV Smart versions
• The fans are intended for installation in underground and above-ground parking structures, to facilitate ventilation
and cold smoke extraction.
• For optimum operation, the jet fan must be suspended horizontally from the ceiling in such a position that intake and
outlet are unobstructed.
• The maximum admissible operating data on the name plate apply to an air density of 1.2 kg/3³ (sea level) and a
maximum air humidity of 80%.
• The fan is suitable for conveying clean air, with a density of 1.3 kg/m3 and a max. air humidity of 95%.
5.9 Incorrect use
Incorrect use refers mainly to using the fan in another way to that described. The following uses are incorrect and
hazardous:
• Conveying of explosive and combustible media
• Conveying of aggressive media
• Installation outside
• Operation in an explosive atmosphere
5.10 Terminal boxes
IV Smart AC IV Smart EC IV Smart CO
| 002

GB Name plate and type key | 11
6 Name plate and type key


Serial.no: 84543/1002773290-001/20170131
IV Smart EC
230 V~ 50 Hz
IP54
䰊
2510 min ¹
17kg
 0,35 kW
Made in GERMANY
INS.CL.B
2,6 A
www.systemair.com
1
2
3
4
5
6
7
1Type designation 5Insulation class
2Voltage/current/frequency 6Article number/production number/manufacturing date
3 Input power 7 Certifications
4Enclosure class/fan impeller speed/
weight
Table 4 Type key
IV Smart EC -
-No controller
CO Equipped with a carbon monoxide control unit
Motor type
EC Electronically commutated/1 phased
AC 2 poled/voltage controllable/1 phased
Fan type
Induction fan Smart
| 002

12 | Installation GB
7 Installation
Warning: Danger from falling fan or fan parts.
♦Check the surface before installation for load bearing capacity.
♦Consider all static and dynamic loads when selecting hoisting equipment and fastening components.
General safety information
♦Installation may only be carried out by adequately qualified persons, details see Table 1 Qualifications, page 6.
♦Wear protective equipment during all work in the vicinity of the fan, details see 2.2 Personal protective equipment,
page 6.
♦Abide by the system-related conditions and requirements of the system manufacturer or plant constructor.
♦Do not dismantle or circumvent safety elements, or put them out of function.
♦Provide contact and intake protection and ensure safety distances according to DIN EN ISO13857 and DIN 24167-1.
♦Prevent the possibility of foreign bodies being drawn in.
7.1 Preconditions
♦Ensure that the fan and all its components are undamaged.
♦Ensure that the information on the name plates (fan and motor) matches up with the operating conditions.
♦Ensure that there is enough space to install the fan.
♦Protect against dust and moisture when installing.
♦Fit the fans in such a way that there is sufficient access for troubleshooting, maintenance and repair.
7.2 Installation on the ceiling
4x
Installation IV Smart
| 002

GB Electrical connection | 13
8 Electrical connection
8.1 Safety information / Preconditions
Warning: Danger from electrical voltage!
♦Observe the 5 rules of electrical safety, see 2.3 5 rules of electrical safety, page 6.
♦Prevent the ingress of water into the connection box.
♦Electrical connection may only be carried out by adequately qualified persons, details see Table 1 Qualifications, page
6.
♦Observe and respect local conditions, regulations and laws.
♦Wear protective equipment during all work in the vicinity of the fan, details see 2.2 Personal protective equipment,
page 6.
8.2 Preconditions
♦Abide by the system-related conditions and requirements of the system manufacturer or plant constructor.
♦Safety elements may not be dismantled, circumvented or deactivated.
♦Install a circuit breaker in the permanent electrical installation, with a contact opening of at least 3 mm at each pole.
8.3 Connection
♦Check if the data on the nameplate matches the connection data.
♦Complete the electrical connection according to the circuit diagram.
♦Lay the connection cables in the terminal box in such a way that allows the cover of the terminal box to be closed
without resistance.
♦Use all of the locking screws.
♦Insert the screws by hand to avoid damaging the thread.
♦Tighten all glands well in order to guarantee protection class IP.
♦Screw the lid of the terminal box/inspection switch evenly tight.
♦Connect the cable end in a dry environment.
8.3.1 Wiring diagram IV Smart AC
Color Function/pin assignment
Black LPower supply 230 V AC, 50...60 Hz
Blue NNeutral conductor
Green/Yellow PE Protective conductor
| 002

14 | Electrical connection GB
8.3.2 Wiring diagram IV Smart EC
Client side
Max. speed
Adjustable speed
10V –> n = max
1V –> n = min
<1V –> 0
Adjustable speed through PWM
1...10 KHz
100 % PWM –> n = max
10 % PWM –> n = min
< 10 % –> 0
Adjustable speed through
potentiometer
Wire no. Connection Color Function/assignment
1 PE green/yellow Protective conductor
2 L brown Power supply 230 V AC, 50...60 Hz, see name plate for
voltage range
3 N blue Neutral conductor
4 GND blue GND-connection of the controller interface
5speedometer white Speed output: Open Collector, 1 impulse per revolution,
electrically isolated, Isink_max = 10 mA
610 V/max. 1,1 mA red Voltage output 10 V/1.1 mA
7 0...10 V PWM yellow Controller input 0...10 V or PWM
| 002

GB Electrical connection | 15
8.3.3 Wiring IV Smart EC-CO
The wiring diagram of the IV Smart EC-CO fan is not included in this document, but within this delivery.
Table 5 Electrical connections
Name Occupancy Designation Description
X1
1. L
X1 SUPPLY Supply connection to the control unit
2. N
3. PE
X2
1. L
X2 FAN1 Supply connection to fan 1. Voltage corresponds to the control unit's
supply voltage
2. N
3. PE
X3
1. L
X3 FAN2 Supply connection to fan 2. Voltage corresponds to the control unit's
supply voltage
2. N
3. PE
X4
1. 10 V
X4 FAN1
Control connection to fan 1. Speed specification and speed
feedback. If the fan has a 10 V output, it can be connected to
terminal X4.1.
2. 0-10 V
3. HALL
4. GND
X5
1. 10 V
X5 FAN2
Control connection to fan 2. Speed specification and speed
feedback. If the fan has a 10 V output, it can be connected to
terminal X5.1.
2. 0-10 V
3. HALL
4. GND
X6
1. 24 V
X6 SENSOR Connection for CO sensor supply connection and measuring signal
connection
2. 4-20 mA
3. EARTH
X7
1. NC
X7 ALARM Potential-free alarm contact connection option for controlling an
alarm siren or other auxiliary device.
2. COM
3. NO
8.3.3.1 Fan speed specification
The minimum fan speed can be set via a potentiometer in the range from 20 % to 40 %. The potentiometer is only ac-
cessible once the housing cover has been removed. The fan speed increases proportionately to the CO concentration
until the maximum speed at 50 ppm. If a fault is detected, the fans operate at maximum speed in order to remove any
| 002

16 |Commissioning GB
raised CO concentrations in the air. The following table provides information about the control unit's speed specifica-
tions to the fans.
Table 6 Fan speed specification
CO concentration Speed specification values Comment
CO < 15 ppm Switch-off hysteresis 10
ppm
0 V Fan standstill
CO = 15 ppm 2 V…4 V (min.) Speed depending on set value
15 ppm < CO ≤ 50 ppm Min.…10 V Linear rise in the characteristic curve
analogue to the CO concentration
starting with the minimum through to
the maximum fan speed
50 ppm < CO 10 V Maximum fan speed
Fault 10 V Maximum fan speed
8.4 Protective grounding wire
The protective grounding must have a cross-section equal to or greater than that of the phase conductor.
8.5 Residual current circuit breaker
All-current-sensitive residual current circuit breakers are required for use in alternating-current systems with 50/60 Hz,
in combination with electronic devices such as EC motors, frequency converters or uninterruptible power supplies
(UPS).
8.6 Protecting the motor
Note:
In fans equipped with an EC motor, there is no additional motor protection needed. The motor protection is
integrated in the electronics of the motor.
Important
Damage to motor due to overcurrent, overload or short circiut.
♦Use (all-pole) circuit breaker (characteristic C or K) or motor protection switches.
♦Always connect thermo-contacts or cold conductors to a motor protection switch.
9 Commissioning
9.1 Safety information
♦Commissioning may only be carried out by adequately qualified persons, details see Table 1 Qualifications, page 6.
♦Wear protective equipment during all work in the vicinity of the fan, details see 2.2 Personal protective equipment,
page 6.
9.2 Preconditions
♦Installation and electrical connection have been correctly performed.
♦Residual material from installation and foreign objects have been removed from the fan and ducts.
♦Inlet and outlet are free.
♦Safety devices have been fitted.
♦Ground cable is connected.
♦Cable glands are tight.
♦Nominal current (from the name plate) is not exceeded.
♦Data on the name plate corresponds with the connection data.
| 002

GB Commissioning |17
9.3 Commissioning Report
Important
• It is recommended to fill out the commissioning report 16 Commissioning Report, page 24.
• Please keep the completed commissioning report in a safe place. In the case of a warranty claim, this
report can be requested by Systemair GmbH. This document can also be downloaded from our online
catalogue.
9.4 Tests before activation
♦Check that safety elements and protection grilles are securely fastened.
9.5 Tests (AC motor)
1. Before switching the fan on, check for externally visible damage and ensure that the protective equipment functions
properly.
2. Switch the fan on.
3. Checks:
♦Direction of rotation/conveyance. The direction of rotation always applies looking at the rotor
• The direction of rotation is best observed just before the fan stops.
♦Smooth running (any vibrations and noise)
♦Current consumption
♦Compare the current consumption with the nominal consumption on the name plate.
♦Tightness of all connections
4. Switch the fan off.
9.6 Tests (EC motor)
1. Before switching the fan on, check for externally visible damage and ensure that the protective equipment functions
properly.
When the mains are switched on, the motor starts an initialization (a few seconds). After the initialization the control
input is active.
2. Switch the fan on via the control input.
3. Checks:
♦Direction of rotation/conveyance. The direction of rotation always applies looking at the rotor
• The direction of rotation is best observed just before the fan stops.
♦Smooth running (any vibrations and noise)
♦Current consumption
♦Compare the current consumption with the nominal consumption on the name plate.
♦Tightness of all connections
4. Switch the fan off via the control input.
9.7 Tests when activated EC CO version
9.7.1 Function test
A function test is carried out once the voltage supply is connected, with the displays, the potential-free contact and the
fans being switched on briefly. The control unit has been installed correctly if the power display lights up permanently,
the CO alarm and fault display goes out after 2 seconds and the audible display does the same after 1 second. The po-
tential-free contact must tighten after 1 second and therefore establish a connection between X7.2 and X7.3. In addi-
tion, no faults must be displayed after around 15 seconds. In the Chapter 9.7.3 Visual and audible display, page 18 the
meaning of the different signal types are explained.
| 002

18 |Operation GB
9.7.2 Warm-up time
Once the operating voltage has been connected, the control unit is in a warm-up state for around 6.5 minutes. During
this time, no CO measurements are carried out and no CO alarms are triggered. To ensure basic ventilation and to re-
move any raised CO concentrations in the air, the fans are controlled at a minimum speed. The warm-up time is needed
to give the CO sensor enough time for the CO measuring transducer's warm-up phase. Once the warm-up time has
elapsed, the control unit switches to its normal operating state (ready) and CO analysis takes place.
9.7.3 Visual and audible display
The table below distinguishes between the displays based on the control unit's four operating modes.
Table 7 Visible and audible display
Operating mode Audible signal
generator
CO alarm
Red LED
Operation
Green LED Fault
Yellow LED
Warm-up time No No On No
Ready No No On No
CO alarm On Rapid flashing 2 Hz On No
Fault 2 fast sounds / min No On Rapid flashing 2 Hz
Table 8 Carbon monoxide alarm thresholds
CO concentration for activation of
the CO alarm
Control unit trigger times CO concentration for resetting of the
active CO alarm
30 ppm No alarm No alarm
50 ppm After around 75 min < 40 ppm
100 ppm After around 25 min < 40 ppm
300 ppm After around 1 min < 40 ppm
10 Operation
10.1 Safety information
Warning: Hazard from electrical voltage or moving components.
♦The device may only be operated by adequately qualified persons, details see Table 1 Qualifications, page 6.
♦The device may only be operated by people who are instructed in and have understood the function and risks, and
can act accordingly.
♦Abide by the system-related conditions and requirements of the system manufacturer or plant constructor.
10.2 Preconditions
♦Ensure access only to persons who can safely handle the device.
♦Only use the fan in accordance with the operating instructions and the operating instructions for the motor.
♦Do not dismantle or circumvent safety elements, or put them out of function.
| 002

GB Troubleshooting/maintenance/repair/CO alarm | 19
11 Troubleshooting/maintenance/repair/CO alarm
11.1 Safety information
♦Troubleshooting/maintenance/repair may only be carried out by adequately qualified persons, details see Table 1
Qualifications, page 6.
♦Wear protective equipment during all work in the vicinity of the fan, details see 2.2 Personal protective equipment,
page 6.
♦Observe the 5 rules of electrical safety, see 2.3 5 rules of electrical safety, page 6.
♦Abide by the system-related conditions and requirements of the system manufacturer or plant constructor.
♦The rotor must be at a standstill.
11.2 Troubleshooting Fan
Table 9 Troubleshooting
Problem Possible causes Remedy
Fan does not run
smoothly
Rotor imbalance Rebalancing by a specialist company
Soiling on the rotor Clean carefully, rebalance
Material decomposition on the
rotor due to aggressive material
conveyed
Contact Systemair
Rotor rotates in wrong direction Contact Systemair
Deformation of rotor due to
excessive temperature
Ensure that the temperature does not exceed the certified
value/Install new rotor
Vibrations, oscillations Check the installation of the fan
Air output of fan too
low
Rotor rotates in wrong direction Contact Systemair
Flow regulators not or only
partly open
Check opening position on site
Fan does not reach
nominal speed
Improperly aligned drive motor Contact Systemair
Control units (if used) such as
frequency converter or
transformer are set incorrectly.
Correct the settings of the control units.
Mechanical blockage Remove the blockage
Motor does not
rotate
Faulty supply voltage Check the supply voltage, re-establish the voltage supply
Faulty connection Disconnect from the power supply, correct the
connection, see circuit diagram.
Temperature monitor has
responded
Allow the motor to cool down, find and resolve the cause
of the fault.
Electronics/motor
overheated
Insufficient cooling Improve cooling.
Overloaded motor Check if the correct fan is used for your application.
Ambient temperature too high Check if the correct fan is used for your application.
Note:
For all other damage/defects, please contact Systemair. Defective fans must be completely replaced.
11.3 Alarm and fault handling Carbon monoxide control unit
The control unit continuously monitors the sensor's function, as well as the function of the fans. The following sub-
points describe the the meaning of the fault and CO-Alarm display and the way in which they should be responded to.
| 002

20 | Troubleshooting/maintenance/repair/CO alarm GB
11.3.1 Thresholds for fault displays
The control unit distinguishes between two fault types, which are specified in more detail in the table below.
Table 10 Fault display thresholds
Fault type Setting threshold Reset threshold Comment
Fan failure RPM < 130 rpm /
min
RPM ≥ 180 rpm / min Fan fault or fault with the fan supply cables
–> Signalled after 10 seconds
Sensor fault I4-20mA < 3.0 mA I4-20mA ≥ 3.5 mA Short circuit or break in the sensor cable
–> Signalled after 3 seconds
11.3.2 Potential-free alarm contact
The illustration below explains the alarm contact's switching states.
Control terminals e.g. to connect an alarm signal
1
2
CO alarm — fault or voltage free Operating ok
11.3.3 Behaviour in the event of a CO alarm and fault handling
The control unit distinguishes between two fault types, which are specified in more detail in the table below.
Table 11 Behaviour in the event of a CO alarm and faults
No. Problem Possible cause Remedy / suggested solution
1CO alarm Critical CO concentration
reached
1. If the fan and control unit is installed in a garage
and your vehicle engine is idling, switch the engine
off.
2. Leave the room immediately and seek fresh air.
Check that everyone is present. Do not go back
into the room before it has been ventilated and the
CO alarm has stopped.
3. If the alarm triggers again after 24 hours, repeat
steps 1-2 and call the emergency gas services
(please check you have their number now) and if
necessary notify the relevant gas fitter.
2Fault - Fan failure
- Sensor fault Contact Systemair
11.4 Maintenance
To ensure a reliable operation of the fan, we recommend periodic maintenance intervals. These maintenance intervals
must be specified by the operator. The frequency of maintenance activities or additional activities must be decided ac-
cording to the use of the fans. It is important for traceability to create a maintenance plan, in which the work performed
is written down.
The maintenance intervals should be shorter if the following conditions (among others) apply:
• Fan used as kitchen exhaust application
• Ambient temperature > 40°C or < -10°C, or temperature variations > 20k
| 002