FlaktWoods STOF - User Manual

» INSTALLATION AND MAINTENANCE
STOF
ROOF FAN
AIR MOVEMENT
ROOF FANS
AIR COMFORT

Summary

STOF Roof Fan Installation and Maintenance

Important Information and Safety

General Safety and Compliance

Covers compliance with EG Machinery Directive and general safety regulations for operation.

Safety Symbol Explanation

Explains the meaning of the safety symbol indicating danger and risks to personnel.

Technical Specification

Construction of Uninsulated Vertical Discharge

Details the components of the uninsulated vertical discharge roof fan.

Insulated Vertical Discharge Components

Lists components for the insulated vertical discharge fan version.

Uninsulated Horizontal Discharge Components

Lists components for the uninsulated horizontal discharge fan version.

Applications and Motor Specifications

Describes fan applications and details motor types, construction, and input voltage.

Vertical Discharge Dimensions and Weights

Provides dimensional data and weights for vertical discharge fan versions.

Horizontal Discharge Dimensions

Provides dimensional data and weights for horizontal discharge fan versions.

Transport and Storage

Transport Inspection and Safety

Procedures for inspecting fans after transport and safety during transport.

Intermediate Storage Guidelines

Recommendations for storing fans before or between uses, including environmental conditions.

Lifting Procedures

Explains the correct method for lifting the fan, referencing lifting lugs.

Installation

Fan Installation on Roof Curb

Steps for installing the fan on a roof curb (BOGA E130), sizes 225 onwards.

Fan Installation on Base Frame

Instructions for mounting the fan onto a base frame using an installation frame.

Electrical Connection and Safety Notes

Important points for electrical connections and safety during installation.

Wiring Diagrams - 230 V & 400 V

Presents wiring diagrams for 230V and 400V AC/EC motor configurations.

Wiring Diagrams - EC Motors

Wiring diagrams specifically for EC motors with BMS and alarm relay.

Wiring Diagrams - 400 V EC (BMS;Alarm)

Wiring diagrams for 400V EC motors with BMS system and alarm relay.

Commissioning

Safety Control Before Operation

Pre-operation checks for fan installation and safety equipment.

Test Run Procedure

Steps for conducting a test run to verify rotation direction and smooth operation.

Service and Maintenance

General Service and Warranty Information

Information on fan service requirements, warranty conditions, and authorized personnel.

Maintenance for Uninsulated Versions

Steps for cleaning the impeller, motor, and casing for uninsulated versions.

Cleaning for Insulated Vertical Version

Steps for cleaning the impeller, motor, and casing for insulated vertical versions.

Motor Replacement for Uninsulated Version

Procedures for replacing the motor and impeller package for uninsulated fans.

Motor Replacement for Insulated Version

Procedures for replacing the motor and impeller package for insulated fans.

Fan Scrapping and Recycling

Guidance on how to scrap the fan, identifying recyclable components.

Declaration of Conformity

EC Declaration Details

Official declaration of conformity with relevant EC directives and harmonized standards.

Overview

1. Technical Specifications
2. Usage Features
3. Maintenance Features

The Fläkt Woods STOF Roof Fan is designed to generate the required airflow in ventilation systems, overcoming pressure drops in the duct system through the use of a rotating impeller within the fan casing. These fans are primarily used as exhaust fans in ventilation systems.

Technical Specifications

The STOF Roof Fan is available in both uninsulated and insulated vertical discharge versions, as well as an uninsulated horizontal discharge version.

Construction (Uninsulated Vertical Discharge - Sizes 355 to 630):

1. Casing
2. Roof panel (1 or 3 pcs)
3. Bottom plate
4. Inlet cone
5. Impeller
6. Rain cover
7. Motor bracket
8. Motor
9. Junction box
10. Cable grommets
11. Handles (sizes 400 - 630)

Construction (Insulated Vertical Discharge):

1. Casing
2. Roof panel
3. Hatch (2 pcs)
4. Junction box
5. Bottom plate
6. Inlet cone
7. Impeller
8. Rain cover
9. Motor bracket
10. Support (1/2 pcs)
11. Motor

Construction (Uninsulated Horizontal Discharge):

1. Weather cowl
2. Bottom plate
3. Inlet cone
4. Impeller
5. Motor bracket
6. Motor
7. Junction box
8. Roof beams
9. Guard
10. Handles (sizes 400-630)

Motors: The fans are equipped with either 1- or 3-phase external rotor motors with integrated impellers. EC-motors also feature an integrated speed controller. Detailed motor information, including minimum and maximum allowed temperatures, is available in the technical catalogue.

Fan size	Motor type	Motor construction	Input voltage
190 - 400	AC	Outer rotor	1~230 VAC
355 - 630	AC	Outer rotor	3~400 VAC
190 - 400	EC	Outer rotor	1~230 VAC
450 - 630	EC	Outer rotor	3~400 VAC

Dimensions and Weight (Uninsulated Vertical Version):

Fan size	A	A1	H	Lin	Lout	Win	Wout	Weight
190			245	130	358	348	8
225	328		226	447	467	447	469	10
310	328		306	447	467	447	469	16
355	438		341	557	577	557	579	22
400	508		351	627	647	627	649	27
450	598		382	717	737	717	739	36
500	778		461	897	917	897	919	56
630	998		520	1117	1137	1117	1139	82

Dimensions and Weight (Insulated Vertical Version):

Fan size	A	A1	H	Lin	Lout	Win	Wout	Weight
225	328		505	447	465	447	500	24
310	328		505	447	465	447	500	24
355	438		555	557	570	557	610	36
400	508		606	630	644	630	675	38

Dimensions and Weight (Horizontal Version):

Fan size	A	A1	H	Win	Wout	Hout	Weight
190			245	216	345	480	7
225	328		261	447	480		10
310	328		340	447	480		14
355	438		383	557	600		18
400	508		398	627	710	411	24
450	598		433	717	820	441	32
500	778		527	897	1030	540	53
630	998		595	1117	1300	597	76

Usage Features

Installation: The fan can be installed either with a roof curb (BOGA E130) or by using an installation frame on a separately built base frame.

• With Roof Curb (BOGA E130), Sizes 225 onwards: Install sealing tape on the roof curb, lift the fan onto the curb, ensuring the base frame aligns and the safety switch/cable grommets are on the same side as the hinges. Fasten with four M8 screws.
• On Base Frame with Installation Frame (STEZ-03), Sizes 225 onwards: Fasten sealing tapes to the base frame, place the mounting frame, and secure it with four screws or anchor bolts. Ensure proper alignment for wind load and hinges. Fasten sealing tape to the upper part of the mounting frame, then secure the fan with four M8 screws.
• On Base Frame (Uninsulated Versions), Size 190: Fasten sealing tape to the base frame, place the fan, and secure it through the bottom plate with four screws or anchor bolts (access by removing the roof panel).

Electrical Connections: All electrical installations must be carried out by authorized personnel, following local safety regulations. An isolator must be included in the mains cable, and the motor should be protected with motor protection if necessary. Cable and fuses must be dimensioned according to local requirements, and contact between cables and the impeller must be prevented.

Commissioning: Before starting, check for any abnormal devices inside the fan, verify correct installation, and ensure all safety equipment is in place. During a test run, check for correct rotation direction, smooth impeller rotation, and absence of abnormal noises.

Maintenance Features

General Service: The roof fan generally requires no special service, but regular cleaning of the impeller is necessary, especially if the air is not clean, to prevent vibrations. If abnormal noise from motor bearings occurs, the motor and impeller or the complete fan unit should be replaced.

Warranty: Warranty is contingent on proper installation and necessary service actions being performed. Any problems during the warranty period should be reported to the manufacturer or dealer.

Cleaning and Motor Replacement:

• Uninsulated Versions (Sizes 225-630):

  1. Switch off power and wait 5 minutes.
  2. Open fastening screws (4 pcs) to open the fan casing. Lock the fan in the open position with stay fastener(s).
  3. Verify stay fastener(s) and hinge bolts are correctly fastened.
  4. Clean components and casing.
  5. Release stay fastener(s), close the casing, tighten screws, and test fan operation.
  • For vertical discharge, the casing can also be cleaned by removing the roof and casing assembly.
  • For horizontal discharge, cleaning can be done by removing the cowl and bird guards.

• Insulated Vertical Version:

  1. Switch off power and wait 5 minutes.
  2. Open fastening screws (~10 mm) to open the casing. Lock the fan in the open position with stay fastener(s).
  3. Verify stay fastener(s) and base frame are correctly fastened.
  4. Clean necessary parts.
  5. Release stay fastener(s), close the casing, tighten screws, and test fan operation.
  • The casing can also be cleaned by removing the roof panel.

• Motor Replacement (Uninsulated Version):

  • Motor and impeller should always be replaced as a package (available for size 400 and bigger; for smaller fans, the complete unit is replaced).
  • Cover ductwork below the fan to prevent tools/parts from falling.
  1. Switch off power and wait 5 minutes.
  2. Remove casing and roof (for vertical version) or cowl and fan guards (for horizontal version).
  3. Disconnect cables.
  4. Lift motor bracket with motor and impeller from the base frame.
  5. Remove motor bolts (protect impeller-motor package) and lift the motor bracket away.
  6. Remove inlet cone (pop-rivets and sealing compound).
  7. Install new inlet cone (remember sealing compound) and motorized impeller.
  8. Reconnect cables.
  9. Re-install motor bracket and casing, ensuring impeller rotates freely.
  10. Start the fan, check rotational direction, free impeller rotation, and absence of abnormal noises.

• Motor Replacement (Insulated Version):

  • Motor and impeller should always be replaced as a package.
  • Cover ductwork below the fan.
  1. Switch off power and wait 5 minutes.
  2. Remove roof and casings by loosening M6 bolts (some hidden behind hatches).
  3. Disconnect cables.
  4. Remove inlet cone (self-tapping screws and sealing compound).
  5. Remove motor bolts (protect impeller-motor package) and lift motorized impeller away.
  6. Install new motorized impeller and inlet cone (remember sealing compound), ensuring free impeller rotation.
  7. Reconnect cables.
  8. Reinstall casings, roof panel, and close hatches.
  9. Start the fan, check rotational direction, free impeller rotation, and absence of abnormal noises.

Scrapping: Electrical motors and other electrical components must be removed from the fan according to their specific instructions. Steel material is recyclable, as are the small plastic components within the fan.

FlaktWoods STOF Specifications

General

Brand	FlaktWoods
Model	STOF
Category	Fan
Language	English