flakt woods STOF AC 190 User manual

STOF ROOF FANS
» SAFETY, INSTALLATION AND MAINTENANCE INSTRUCTIONS
PART NO. 854842
AIR MOVEMENT
FIRE SAFETY
PN :854842 STOF Roof Fan Installation Guide © Copyright 2015 Fläkt Woods Group

CONTENTS
PARAGRAPH
SAFETY 1
INTRODUCTION & PURPOSE - GENERAL 2
STORAGE & HANDLING 3
MECHANICAL INSTALLATION 4
- CONSTRUCTION 4.1
- INSTALLATION WITH ROOF CURB 4.2
- INSTALLATION ON A BASE FRAME USING INSTALLATION FRAME 4.3
- REPLACEMENT OF DSC AND DSM UNITS 4.4
ELECTRICAL INSTALLATION & OPERATION 5
MAINTENANCE 6
FAULT FINDING 7
- ELECTRICAL 7.1
- MECHANICAL 7.2
DISPOSAL 8
EUROPEAN MACHINERY DIRECTIVE 2006/42/EC 9
TABLE
ROUTINE MAINTENANCE PROCEDURES 1
MOTOR FIXING TORQUE VALUES 2
WIRING DIAGRAMS FIGURES
STOF AC 1ph 190, 225, 310, 355 6
STOF AC 1ph 400 7
STOF AC 3ph 355, 450, 500, 630 8
STOF EC 1ph 190, 225, 310, 355 9
STOF EC 1ph 400 10
STOF EC 3ph 450 11
STOF EC 3ph 500, 630 12
1. SAFETY
ATTENTION!
Only approved, qualified personnel familiar with the assessment of hazards and risks
associated with fans, and with the use of tools and test equipment required to service
such fans, should install, operate and maintain the product.
ATTENTION!
If the installer or user is unable to understand the information in this manual, or has
any doubt that a safe and reliable installation, operation and maintenance of the
equipment can be assured, Fläkt Woods Limited or their representative should be
contacted for advice.
ATTENTION!
Warnings and safety information relevant to specific operations are contained at the
start of each section to which they apply.
2. INTRODUCTION & PURPOSE - GENERAL
STOF roof fans are intended for use as exhaust fans in ventilation systems. The maximum
allowed rotational speed for fan-motor is shown within the technical catalogue. If the fan is not
used continuously, when operated in a cold climate, we recommend the use a back draught
shutter mounted within duct work. This is designed to prevent ambient humidity from freezing
within the fan construction, which could cause damage.
The fan assembly is manufactured and specifically designed to fulfil the requirement of a roof
mounted air extraction installation. No deviation from the original requirement should be
implemented without first referring to Fläkt Woods Limited head office in Colchester (UK). Any
queries regarding safety or operating problems should be referred to your nearest Fläkt Woods
office, sales centre or representative, together with full fan nameplate details. Should a fan
failure occur whilst the product is under warranty, then please contact our Fläkt Woods service
centre in Colchester (UK), before any repair work is undertaken.
If speed control is to be provided by means of a frequency inverter, then please seek drive
selection and compatibility advice from Fläkt Woods.
Motors are of the external rotor motor type and are integrated directly with the impeller
assembly. They are available to suit either single or three phase electrical supplies. EC motors
also have an integrated motor speed controller.
Fan size Motor type
190…400 1~230 VAC
355…630 3~400 VAC
3. STORAGE & HANDLING
If the fan assembly is to be stored; check immediately on receipt that it is as ordered and that
it has not been damaged in transit. Where the fan is delivered in a crate (or similar) the crate
should be considered as a protective device only. The crate must not have equipment stacked
on it and it must not be stacked on other equipment. The crate structure mush not be used a
lifting aid, unless otherwise indicated.
A fork-lift truck or similar should be used for moving the crate. The fan should be stored in a
safe, clean, dry, vibration free, location. The fan storage temperature must be between -20°C
and +40°C. When dismantling the crate to gain access to the fan assembly care should be
taken to avoid injury from sharp edges, nails, staples, splinters, etc.
If the fan is to be stored for 12 months or more, an inspection by Fläkt Woods Limited service
team before commissioning is advised.
1

4. MECHANICAL INSTALLATION
ATTENTION!
Where the fan is delivered in a crate (or similar), the crate must be considered as a
protective device only, and must not be used as a lifting aid unless otherwise
indicated.
ATTENTION!
All lifting aids used during installation should be adequately certified to carry the
weight of the equipment being lifted.
ATTENTION!
Always wear appropriate clothing (including hard hats, eye protectors and ear
defenders) when working in the vicinity of the fan assembly.
ATTENTION!
During lifting of the fan, all personnel must be clear of the area below the suspended
fan.
NOTE!
Before installing the fan assembly, check that it has not been damaged in transit, that
there is no deformation of the fan casing, that the impeller rotates freely and that the
fan nameplate data complies with the requirement of its use.
The lifting lugs provided on the top of the weather cowl can be used, but before use check that
these are secured correctly to the fan. Where 4 lifting lugs are provided, then all 4 must be
used when lifting the fan.
The fan should be installed either together with a roof curb or by using an installation frame on
a base frame, which has been built separately and specifically for the fan.
After installation all packing materials must be disposed of in accordance with Paragraph 8.
2
1
7
8
10
6
5
9
2
3,4
4.1 CONSTRUCTION
1. Weather Cowl
2. Base Unit
3. Inlet Cone
4. Impeller
5. Cowl Mounting Brackets
6. Motor Mounting Point
7. Electrical Connection Terminal Box
8. Discharge Guards (Bird Guards)
9. Back Draft Shutters
10. Product Data Labels
UNIT CONSTRUCTION OVERVIEW
FIGURE 1
3

4
4.2 INSTALLATION WITH ROOF CURB
Install the gasket (included within items delivered) onto the roof curb. Lift the fan and place it
onto the roof curb. To ensure that the gasket offers the best level of water ingress protection,
please check that the roof fan base frame is positioned correctly on top of the roof curb, so that
it does not damage the gasket.
Where our model “FLOW” installation frame is used, please ensure that the correct versions
of either the BOGA roof curb or STEZ-07 Roof curb (with sound baffles) are used. Refer to our
technical brochure for more information. Fasten the roof fan through the base frame to the roof
curb with four pcs screws, M8x35.
INSTALLATION WITH ROOF CURB
FIGURE 2
4 x M8
Screws
Gasket
Roof
Curb
5
4.3 INSTALLATION ONTO A BASE FRAME USING AN INSTALLATION FRAME
Install the gasket (included within items delivered) onto the base frame. Place the installation
(mounting frame) onto the base frame and fasten it with 4 screws, or in the case where the
base is manufactured from concrete, use 4 anchor bolts. 4 holes (12 mm in diameter) are
provided for these screws within the installation frame.
Where our model “FLOW” installation frame is used, please ensure that the correct versions
of either the BOGA roof curb or STEZ-07 Roof curb (with sound baffles) are used. Refer to our
technical brochure for more information.
In addition, please ensure that the gasket (included with the installation frame) is fitted
correctly to the upper part of the installation frame. Fasten the fan on to the installation frame
with screws.
INSTALLATION ONTO THE BASE FRAME USING
INSTALLATION FRAME
FIGURE 3
Mounting frame
(accessory, also
available with
hinges)
Gasket
Duct or BOGA
E160 / E1120

6
4.4 REPLACEMENT OF DSC AND DSM UNITS
When selecting a unit to replace either a DSC or DSM unit, a mounting frame may be required.
Details below show mounting frame requirements.
REPLACEMENT OF DSC AND DSM UNITS
Gasket
Gasket
STOF Size DSC Size DSM Size Mounting Frame P/N
450 330 330 843723
500 400 400 843726
630 500 500 843729
630 630 630 844405
630 - 760 844717
Remove old unit and lift into place the new unit onto existing curb. Fasten unit to curb using M8
coach screws. In cases when a mounting frame is required fasten the mounting frame to the
curb using M8 bolts, then lift the unit into place the unit and fasten using additional M8 screws.
FIGURE 4
Mounting frame
if required
Mounting Curb
7
5. ELECTRICAL INSTALLATION & OPERATION
When selecting a unit to replace a DSC or DSM unit then a mounting frame may be required.
Mounting frame requirements are detailed on page 6.
ATTENTION!
No work should be attempted before completely isolating the fan assembly and its
controls from all electrical supplies. In addition, please ensure that all rotating parts of
the fan have come to rest.
ATTENTION!
The fan assembly contains rotating parts and electrical connections which can be a
danger and cause injury. If there is any doubt that a safe and reliable installation of
the fan can be assured; Fläkt Woods Limited or their representative should be
contacted for advice.
ATTENTION!
Always wear appropriate protective clothing (including hard hats, eye protectors and
ear defenders) when working in the vicinity of the fan assembly.
The fan assembly is fitted with a terminal box on the motor mounting plate. The electrical
supply to the fan assembly should be connected to the terminal box by an appropriately
qualified electrician. It is good practice to fit a clearly marked isolator switch close to the fan,
and have a clearly marked and accessible additional switch remote from the fan. The two
switches allow safe control of the fan and provide a means of safely isolating the fan during
maintenance. A suitable earth must also be connected.
Connection diagrams providing wiring details are found in figures 6 to 12 of this document and
show a visual representation of the inside of the terminal box.
Fuses used in the fan electrical control circuit must be sufficiently rated to carry the starting
current as indicated on the fan nameplate, but they should be regarded as only protecting the
wiring against the effects of short circuits or earth faults. These fuses are not suitable for
overload protection. To provide full protection for the motor, a starter panel with overload
protection should be used, and an isolator switch must be incorporated into the circuit. The
isolator switch should be of the a lockable type that will allow the operator / maintenance
engineer to isolate the fan from the electrical supply before working on the assembly.
If a speed controller, or other control device, forms part of the system, it should be able to
control the fan within safe limits. In addition, sufficient fan speed must be maintained to open
any shutters that may be in the air-flow. The Control equipment should be securely located, and
should not be, or cause, a radiation hazard. Care should be taken to ensure that the fan and
motor is compatible with any speed controller used as a control device.
Fläkt Woods Limited can be contacted for advice on all forms of speed controllers and other
control equipment supplied by the company. Speed controllers should not be used without prior
agreement with Fläkt Woods Limited.
Before switching on, confirm that the electrical supply is fully compliant with the requirement
of the motor as detailed on the fan nameplate, that the fan is correctly installed, all component
parts and fixings are secure, safety guards are in place and no loose items are present in the
vicinity. Immediately after switch-on check for the correct direction of rotation. If the rotation is
incorrect interchange any two phases of the incoming supply at the terminal block (to rectify
this for three phase motors).
Check the fan assembly for smooth, low-vibration running. In addition, confirm that electrical
current consumption is within the full load current specified on the nameplate. The fan must not
be switched on and off in a manner that could cause overheating of the motor or its wiring.

8
6. MAINTENANCE
ATTENTION!
No work should be attempted before completely isolating the fan assembly and its
controls from all electrical supplies. In addition, please ensure that all rotating parts of
the fan to come to rest.
ATTENTION!
All lifting aids used during maintenance, and all lifting points utilised, should be
adequately certified to carry the weight of the equipment being lifted.
ATTENTION!
Always wear appropriate protective clothing (including hard hats, eye protectors and
ear defenders) when working in the vicinity of the fan assembly.
Maintenance must be carried out on the fan assembly by appropriately qualified personnel
using the correct tools and equipment. A regular schedule of routine maintenance should be
established, and a record kept. A list of suggested intervals are given in Table 1. Where the
environment is particularly dirty, a reduction in intervals may be necessary.
It is advisable to clean the fan impeller to help minimise impeller vibration. If any abnormal
noise is heard coming from the motor bearing, the motor and impeller should be replaced.
After maintenance ensure that no loose items are present in the vicinity of the fan, that all
safety guards are properly secured into their original location, and that any temporary device
used to immobilise the impeller has been removed.
It is essential to ensure that all fixings used to attach the motor to the motor mounting plate are
secured and tightened to the correct torque values (see Table 2 for torque details).
9
7. FAULT FINDING
NOTE!
The routine maintenance procedures detailed in Paragraph 6, and Table 1, of this
document are designed to help keep the fan operational and fault free.
7.1 ELECTRICAL
Check that the electrical connections to the unit are secure.
Check that the voltage applied at the fan terminals is as specified on the fan nameplate, and is
balanced.
Measure the current on each motor phase in turn (or on just one phase in the case of
single-phase motors) and confirm that the current consumption is within the full load current
specified on the fan nameplate.
Ensure that there is no smell of burnt insulation in the vicinity of the motor. If this is the case,
please seek advice from Fläkt Woods Limited (Colchester Office).
7.2 MECHANICAL
Check that there are no obstructions to the impeller, that the blades are clean, and that there
are no loose items or debris in the vicinity.
Rotate the impeller by hand. Investigate any sound of grinding or rubbing noises.
Ensure that all fixings are secure.
8. DISPOSAL
Metal components of the fan/motor should be segregated and separately recycled.
The following items of material should be safely disposed of in accordance with local health
and safety regulations:
- Electrical lead coverings
- Motor winding insulation material
- Bearing lubricant
- Motor/fan terminal block
- GRP weather cowl
- Plastic parts
- Packing materials

10
9. EUROPEAN MACHINERY DIRECTIVE 2006/42/EC
(1.7.4.2 CONTENTS OF THE INSTRUCTIONS)
(CLAUSE C)
Please see a typical example of an EC declaration of conformity certificate (below), which
shows particulars of the machinery offered.
(CLAUSE K)
Care should be taken when installing fans to ensure that the product orientation is correct in
relation to direction arrows which indicate direction of air movement and impeller direction.
FIGURE 5
EC DECLARATION OF CONFORMITY
11
ROUTINE
MAINTENANCE
SCHEDULE
EVERY 3
MONTHS
EVERY 6
MONTHS
EVERY 12
MONTHS
COMMENTS
Examine
impeller for dirt
build-up and for
damage
*Remove any material/dirt build-up.
Check the running clearance for the
impeller.
Check
operation of roof
unit shutters
*Ensure shutters are clean and that they
open and close easily.
Examine
condition and
security of
safety guards
*Clean safety guards. Replace them if
there are any signs of damage.
Examine
tightness of
roof unit to roof
fixings
*Tighten as necessary to ensure a safe
and secure fit.
Check security
of motor fixings
to mounting
plate
*Confirm that all fixings are tight and
fully driven home. Torque ratings for the
motor fixings are listed in Table 2.
Check motor
voltage and
current
consumption
*Ensure readings are as per nameplate
data.
ROUTINE MAINTENANCE SCHEDULE
UNIT SIZE BOLT SIZE TORQUE (Nm)
190 M4 5
225 M4 5
310 M4 5
355 M6 12
400 M6 12
450 M6 12
500 M10 28
630 M10 28
MOTOR FIXING TORQUE VALUES
TABLE 1
TABLE 2

12
FIGURE 10
WIRING DIAGRAMS
13
FIGURE 9
WIRING DIAGRAMS
FIGURE 7FIGURE 6
FIGURE 12FIGURE 11
FIGURE 8
CAPACITOR
TO BE SUPPLIED
BY A SUITABLE
RATED SUPPLY
YELLOW- GREEN
BLUE
BLACK
BLUE
BROWN
BROWN
E
L N
TO BE SUPPLIED
BY A SUITABLE
RATED SUPPLY
N L E
EXTERNAL
SAFETY CIRCUIT
(2AMP MAX 240v)
CAPACITOR
BROWN
BROWN
BLUE
BLACK
BLUE
YELLOW- GREEN
GREY
GREY
STOF AC 3ph 355, 450, 500, 630
STOF AC 1ph 190, 225, 310, 355 STOF AC 1ph 400
STOF 355 AC 3PH
STOF 450 AC 3PH
STOF 500 AC 3PH
STOF 630 AC 3PH
YELLOW- GREEN
BLUE
BROWN
YELLOW
WHITE
GREEN
GREY
GREY
FACTORY FITTED
TWO LINK CABLES
EXTERNAL
SAFETY CIRCUIT
240v 2Amp
MAX
PE L1L2L3
TO BE SUPPLIED
BY A SUITABLE RATED
SUPPLY
BLACK
STOF EC 3ph 450 STOF EC 3ph 500, 630
STOF EC 1ph 190, 225, 310, 355 STOF EC 1ph 400
YELLOW-
GREEN
BLACK
BLUE
BLUE
YELLOW
RED
WHITE
STOF 190 EC 1PH
STOF 225 EC 1PH
STOF 310 EC 1PH
STOF 355 EC 1PH
TO BE SUPPLIED
BY A SUITABLE RATED
SUPPLY
N L PE
GND
0-10v
10v
TACHO
BMS
B A
1 2 3 4
GND 0-10v
10v
TACHO
N
240v
10K
L
N
T4 T3
SET TO 0-10
SDPV -230
EA002107
4
TACHO 10v
321
GND 0-10v
10K
SDPV-10
EA002107
SDPV 10
T FAN
T1
T2
T3
T4
0-10v
LINK
LINK
VDC
3
GND
GND
2
OPTION A
SDPV - 230
OPTION B
SDPV - 10
STOF 400 EC 1PH
WHITE
RED
YELLOW
BLUE
BLUE
BLACK
YELLOW- GREEN
WHITE
PE L N
TO BE SUPPLIED
BY A SUITABLE RATED
SUPPLY
240v EXTERNAL
SAFETY CIRCUIT
2Amp MAX
SPEED
POTENTIOMETER
SDP V10
SDP V230
10volt
0-10v
GND
YELLOW- GREEN
BLACK
GREY
BROWN
BLUE
WHITE
RED
GREY
BROWN
BLACK
STOF 450 EC 3PH
PE L1L2L3
NO
COM
NC
ALARM RELAY
240V
MAX 2 AMP RATE
TO BE SUPPLIED BY
A SUITABLE RATED
SUPPLY
GND
0-10v
t10v
BMS
STOF 500 EC 3PH
STOF 630 EC 3PH
BLACK
BROWN
GREY
RED
WHITE
BLUE
BROWN
GREY
BLACK
YELLOW- GREEN
BMS
t10v
Ain 1U/0-10v
GND
TO BE SUPPLIED BY
A SUITABLE RATED
SUPPLY
ALARM RELAY
240V
MAX 2 AMP RATE
NC
COM
NO
L3 L2 L1 PE

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PN :854842 STOF Roof Fan Installation Guide © Copyright 2015 Fläkt Woods Group
Fläkt Woods Limited, Axial Way, Colchester, Essex, CO4 5ZD
tel: [phone]
website: www.flaktwoods.co.uk
» See global website for international sales offices www.flaktwoods.com
STOF | PN:854842 | 20150723
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