System air IV Smart Series User manual

Document in original language | · 003
Jet fans
IV Smart AC, IV Smart EC, IV Smart EC CO
Installation and Operating Instructions GB

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© 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.

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

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Contents
15 Commissioning Report.................................... 17
16 EU Declaration of conformity............................ 18

General information | 1
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.
Caution
Hazard with a low risk
Failure to comply with this warning may lead to
moderate injuries.
Warning
Potential hazard
Failure to comply with this warning may lead to
death or serious injury.
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 3. (if applicable, further actions)
♦(if applicable, further actions) 2. Carry out this action
2 Important safety information
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.
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 1.
Table 1 Qualifications
Activities Qualifications
Storage, operation, transport, cleaning, disposal Trained personnel (see following note)
Electrical connection, commissioning, electrical
disconnection Electrical expert or matching qualification
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2|Warranty
Qualifications cont'd
Installation, disassembly Fitter or matching qualification
Maintenance Electrical expert or matching
qualification
Fitter or matching
qualification
Repair
Electrical expert or matching
qualification
Fitter or matching
qualification
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
For the assertion of warranty claims, the products must be correctly connected and operated, and used in accordance
with the data sheets. Further prerequisites are a completed maintenance plan with no gaps and a commissioning re-
port. Systemair will require these in the case of a warranty claim. The commissioning report is a component of this
document. The maintenance plan must be created by the operator, see section 11.4 Maintenance, page 15.
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 2.
♦Do not walk under suspended loads.
♦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
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Description IV Smart |3
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 2.
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, impeller, 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).
♦Check that the motor bearing functions properly before installation.
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 3). 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.
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4|Description IV Smart
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
5.4 Dimensions
169
760
36 140
150
800
700
8
503
173 360
20
Fig. 1 Dimensions IV Smart
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Description IV Smart |5
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.
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
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6| Name plate and type key
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
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 1.
♦Wear protective equipment during all work in the vicinity of the fan, details see 2.2 Personal protective equipment,
page 2.
♦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 there is enough space to install the fan.
♦Protect against dust and moisture when installing.
♦Ensure that the information on the name plates (fan
and motor) matches up with the operating conditions.
♦Fit the fans in such a way that there is sufficient
access for troubleshooting, maintenance and repair.
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Electrical connection | 7
7.2 Installation on the ceiling
4x
Installation IV Smart
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 2.
♦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
1.
♦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 2.
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.
♦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.
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8| Electrical connection
♦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
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Electrical connection | 9
8.3.2 Wiring diagram IV Smart EC
The connection cables of the two motors of the IV Smart are carried out in the terminal boxes.
Terminal assignment terminal boxes (Client side)
1
2
Terminal box — Power supply
Terminal box — Control interface
0-10V
+10V
blau / blue / bleu
rot / red / rouge
gelb / yellow / jaune
GND
TACHO / Motor 1
weiß / white / blanc
TACHO / Motor 2
weiß / white / blanc
N
L
grün/gelb / green/yellow
vert/jaune
schwarz / black / noir
blau / blue / bleu 1
2
Terminal assignment motor
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
CON10 L black Power supply 230 V AC, 50...60 Hz, see name plate for
voltage range
CON11 N blue Neutral conductor
CON12 PE green/yellow GND-connection
2 0...10 V PWM yellow Controller input 0...10 V or PWM
4Tacho white Speed output: Open Collector, 1 impulse per revolution,
electrically isolated, Isink_max = 10 mA
3 10 V red Voltage output 10 V, Imax. 10 mA, short-circuit-proof,
power supply for external devices.
1 GND blue GND-connection of the controller interface
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10 | Electrical connection
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
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Commissioning |11
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
Warranty claims can only be made if commissioning work is carried out correctly and written evidence thereof is
provided.
It is recommended to fill out the commissioning report 15 Commissioning Report, page 17.
9.1 Safety information
♦Commissioning may only be carried out by adequately qualified persons, details see Table 1 Qualifications, page 1.
♦Wear protective equipment during all work in the vicinity of the fan, details see 2.2 Personal protective equipment,
page 2.
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.
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12 |Commissioning
9.3 Tests
♦Before switching the fan on, check for externally visible damage and ensure that the protective equipment functions
properly.
AC motor EC motor
1. Switch the fan on.
2. 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
3. Switch the fan off.
When the mains are switched on, the motor starts an
initialization (a few seconds). After the initialization the
control input is active.
1. Switch the fan on via the control input.
2. 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
3. Switch the fan off via the control input.
9.4 Tests when activated EC CO version
9.4.1 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 9.4.3 Visual and audible display, page 12 the
meaning of the different signal types are explained.
9.4.2 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.
9.4.3 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
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Operation |13
Carbon monoxide alarm thresholds cont'd
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 1.
♦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.
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 1.
♦Wear protective equipment during all work in the vicinity of the fan, details see 2.2 Personal protective equipment,
page 2.
♦Observe the 5 rules of electrical safety, see 2.3 5 rules of electrical safety, page 2.
♦Abide by the system-related conditions and requirements of the system manufacturer or plant constructor.
♦The impeller must be at a standstill.
11.2 Troubleshooting Fan
Table 9 Troubleshooting
Problem Possible causes Remedy
Fan does not run
smoothly
Impeller imbalance Rebalancing by a specialist company if possible,
otherwise contact Systemair.
Soiling on the impeller Clean carefully, rebalance
Material decomposition on the
impeller due to aggressive
material conveyed.
Contact Systemair
Impeller rotates in wrong
direction.
Contact Systemair
Deformation of impeller due to
excessive temperature.
Ensure that the temperature does not exceed the certified
value/Contact Systemair.
Vibrations, oscillations Check the installation of the fan.
Air output of fan too
low
Impeller rotates in wrong
direction.
Contact Systemair
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.
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14 | Troubleshooting/maintenance/repair/CO alarm
Troubleshooting cont'd
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 safety-relevant fans (for Ex and smoke
extraction applications) must be replaced completely.
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.
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.
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Troubleshooting/maintenance/repair/CO alarm | 15
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
Warranty claims can only be made if maintenance work is carried out correctly and written evidence thereof is
provided.
We recommend regular maintenance intervals to ensure continuous fan operation. These maintenance intervals are
specified in the “Activities” table below. In addition, the operator must carry out follow-up activities such as cleaning,
replacing defective components or other corrective measures. For traceability reasons, a maintenance plan must be
created which documents the work carried out. This must be created by the operator. If the operating conditions are
"extreme", the maintenance intervals must be reduced so that maintenance is carried out more frequently. Examples
of extreme operating conditions:
• Ambient temperature > 40 ºC or < -10 ºC, or temperature fluctuations > 20 K
Table 12 Activities
Normal operating
conditions
Extreme operating
conditions
Activity Every six
months
Annually Quarterly Every six
months
Check the fan and its components for visible damage,
corrosion and contamination. X X
Check the impeller for damage and imbalance. X X
Check the condensate drain is working correctly. X X
Clean the fan/ventilation system (see 12 Cleaning, page
16). X X
Check the screwed connections for damages/defects and
check that they are firmly seated. XSee normal operating
conditions
Check the fan intake is free from contamination. X X
Check that the fan and its components are being used
correctly. XSee normal operating
conditions
Check the current consumption and compare this with the
rated data. X X
Check the vibration dampers (if used) are working
correctly and check for visible damage and corrosion. XSee normal operating
conditions
Check the electrical and mechanical protective equipment
is working correctly. XSee normal operating
conditions
Check the fan’s rating plate is legible. X X
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16 | Cleaning
Activities cont'd
Check the connection clamps and screwed cable
connections for damage/defects, and check that they are
firmly seated. XSee normal operating
conditions
Check the flexible connectors for damage. XSee normal operating
conditions
Note:
For all other damage/defects, please contact Systemair. Defective safety-relevant fans (for Ex and smoke
extraction applications) must be replaced completely.
11.5 Spare parts
♦Use original spare parts from Systemair only.
♦When ordering spare parts, please specify the serial number of the fan. This can be found on the name plate.
12 Cleaning
12.1 Safety information
♦Cleaning may only be carried out by adequately qualified persons, details see Table 1 Qualifications, page 1.
♦Wear protective equipment during all work in the vicinity of the fan, details see 2.2 Personal protective equipment,
page 2.
♦Observe the 5 rules of electrical safety, see 2.3 5 rules of electrical safety, page 2.
♦Ensure that the power supply has been switched off (all-pole circuit breaker).
♦The impeller must be at a standstill.
12.2 Procedure
Important
Keeping the fan clean extends its service life.
♦Install a filter monitor.
♦Do not use steel brushes or sharp-edged objects.
♦Do not use a high-pressure cleaner (steam jet cleaner) under any circumstances.
♦Do not bend the fan blades when cleaning.
♦When cleaning the impeller, pay attention to balance weights that have been positioned
♦Keep the airways of the fan clear and clean them if necessary with a brush.
13 Deinstallation/dismantling
Deinstall and dismantle the fan in reverse order of installation and electrical connection.
14 Disposal
♦Ensure material is recycled. Observe national regulations.
♦The device and the transport packaging are predominantly made from recyclable raw materials.
♦Disassemble the fan into its components.
♦Separate the parts according to:
• reusable material
• material groups to be disposed of (metal, plastics, electrical parts, etc.)
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