VENCO VAX-EX User manual

INSTALLATION –OPERATION -
MAINTENANCE USER MANUAL
EXPROOF AXIAL FANS
VENCO Havalandırma ve Makina San.ve Tic. A.Ş.
2004. Cad. No:5 45400 OSB Turgutlu –MANİSA / TÜRKİYE
Tel: [phone] Fax: [phone]
www.venco.com.tr [e-mail]
2019.02

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INDEX
1. INTRODUCTION..................................................................................................................................... 1
2. GENERAL IDENTIFICATION OF DEVICE TYPE and MODEL ............................................................... 2
3. TECHNICAL DATA ................................................................................................................................. 2
4. TECHNICAL SPECIFICATIONS ............................................................................................................. 3
5. INSTALLATION....................................................................................................................................... 4
6. OPERATION........................................................................................................................................... 7
7. HANDLING & STORAGE........................................................................................................................ 7
8. MAINTENANCE...................................................................................................................................... 7
9. FAULT DETECTION ............................................................................................................................... 7
10. WARRANTY........................................................................................................................................ 8
11. ANNEX................................................................................................................................................ 9
11.1. Annex-1: Electrical Wiring Diagrams ................................................................................................ 9
1. INTRODUCTION
Before operating VENCO branded VAX-EX Axial Type Exproof Fans, please examine carefully the
instruction manual and keep it. Do not use devices as a workbench or a storage area. VENCO VAX-EX Axial
Type Exproof Fans can only be operated in conditions of intended design and technical specifications.
DEVICES TO BE USED IN DANGEROUS ENVIRONMENTS ARE DESIGNED
SPECIFICALLY FOR THE ENVIRONMENT TO BE SUITABLE FOR THE OFFICIAL
REGULATIONS. FALSE USE, INCOMPATIBLE CONNECTION OR OTHER SMALL
CHANGES MAY HAZARD PRODUCT RISK.
BEFORE OPERATING READ THIS MANUAL and KEEP IT IN REACH OF A SERVICE
PERSONNEL.
THIS FAN CAN ONLY BE OPERATED IN CONDITIONS OF INTENDED DESIGN AND
TECHNICAL SPECIFICATIONS. OTHERWISE THE RESPONSIBILITY BELONGS TO
INSTALLER.
DO NOT USE THIS FAN IN EXPLOSIVE and CORROSIVE ENVIRONMENT.

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2. GENERAL IDENTIFICATION OF DEVICE TYPE and MODEL
VENCO VAX-EX type Exproof Axial fans are the preferred fans for ventilation projects, where there is a risk
of explosion, flammability and ignition. It is designed according to TSE EN 13463-1 standard. It is suitable for
industrial and commercial applications.The motor is found combined with the impeller in canals where the air
circulation actualized and the air flowing is actualized by the way of impeller. The fan cannot be installed
outside without water precaution.
Device Group: II -Yer Üstü Endüstrileri (Madenler harici tüm alanlar)
Device Classification: Zone 1, Zone 2, Zone 21 and Zone 22
Zone 1 - Zone 1 area is classified as a place in which an explosive atmosphere consisting of a mixture with air
or flammable substances in the form of gas, vapour or mist is likely to occur in normal operation occasionally.
Zone 2 - Zone 2 area is classified as an atmosphere where a mixture of air and flammable substances in the
form of gas, vapour or mist is not likely to occur in normal operation, but if it does occur, will persist for a short
period only.
Kind of Ignition Protection: Exd - Flame-proof protection
Group: II B and III B
Temperature Class: T4 - Maximum Surface Temperature 135 °C
3. TECHNICAL DATA
The type key can be seen on the name plate. For Exproof Axial fans, it contains the following data
RESPONSIBILITY OF THE DEFECTS WHICH CAN BE OCCURED AS A RESULT OF
UNAUTHORIZED PERSONNEL INTERVENTION TO FAN or TO BE USED NON-
ORIGINAL SPARE PARTS BELONGS TO THE INSTALLER.

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4. TECHNICAL SPECIFICATIONS
VENCO VAX-EX Type Exproof Axial Fans;
Certificate Number : IEP 17 ATEX 0539
Ex Code:
•Full size from Ø 500 mm to Ø 1400 mm diameter
•1000 m³/h –150.000 m³/h air flow
•Hot deep galvanized sheet metal casing
•Cast aluminum adjustable blade angle impellers
•Aerodynamic profile impellers allow high efficiency and low noise
•Die cast aluminum alloy fan hubs
•Optimum capacity obtained hub combinations besides adjustable blade combination
•IP 67 terminal box has exproof certificate is carried out of the casing
•Electrical motors with IP 55 and Ex d IIB T4 class
•380 V, 3 phase, 50 Hz
•Operating temperature between -20°C and 40°C
•230 V, 1 phase, 50 Hz and 400 V, 3 phase, 50 Hz
•Operating temperature 300°C for 2 hours

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5. INSTALLATION
The fan must be installed according to the air direction label on the fan. Before the start of assembly,
examine manually whether the fan wheel runs freely. Before installation, check the minimum air gap between
the blade tip and the housing according to the following table. During assembly, secure the assembly area.
Take precautions for any access by unauthorized persons. The fan should be installed in a way that makes
service and maintenance easy. The electrical connection must be made by using the exproof certified
coupling Ex d protection type, T4 temperature class from the junction box. A wiring diagram is applied on the
inside of the junction box or separately enclosed. Electrical installations must be made by trained and
authorized electrician.
Fan Diameter
VAX EX
Min. (mm)
Max. (mm)
500
1,4
2,4
560
1,4
2,4
630
1,58
2,58
710
1,78
2,78
800
2
3
900
2,25
3,25
1000
2,5
3,5
1120
2,8
3,8
1250
3,13
4,13
1400
3,5
4,5
Drawing 5.1
Drawing 5.1 illustrates the MFT, MSC, NRD/XS and MFL accessories that could be used with the fan.
The connection of MFT Mounting Bracket, MSC Wire Guard and NRD/XS Vibration Absorber Mounting to
the fan must be done as shown in the following drawing by screw, washer and nut
Drawing 5.1

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.
ALL ELECTRICAL CONNECTIONS SHALL BE DONE ACCORDING TO EN 60204-1
BY TRAINNED AND AUTHORIZED PERSONNEL.
SWITCH THE ENERGY SUPPLY OFF BEFORE YOU BRING ABOUT THE
ELECTRICAL CONNECTION OF THE FAN. MAKE SURE THAT THE ENERGY
SUPPLY CANNOT BE SWITCHED ON AGAIN PREMATURELY. THE ELECTRICAL
CONNECTION MAY ONLY BE CARRIED OUT BY TRAINED PERSONNEL.
THE ELECTRICAL CONNECTION IS TO BE DONE ACCORDING TO VALID
DIRECTIVES AND ONLY BY A QUALIFIED FITTER WITH MATCHING SAFETY
DEVICES FOR THE PROTECTION OF THE MOTOR.
ALL COMPONENTS SHOULD BE EARTHED. DEVICE EARTH CONNECTION MUST
BE DONE ON TOP OF THE CONNECTOR IN JUNCTION BOX and FROM
GROUNDING SCREW WITHIN BODY.

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6. OPERATION
Before starting, check the followings; Be sure that foreign objects are removed from fan area and connected
duct system, check connection to the electrical installation, minimum air gap between the tip of the blade and
the housing and no noise appears when starting the fan. If the air gap is correct, switch the device on and off
briefly, in order to check the direction of rotation of the fan. The rotation direction of the fan must match up
with the direction of the arrow on the housing of the fan. If the direction of rotation is wrong, interchange two
phases in order to set the correct direction of rotation. Connection flanges are made with bolts for lightning
protection. If gasket is used, sufficient duct connection should be bridged to the duct connection.
7. HANDLING & STORAGE
The fans are delivered on wooden pallets wrapped in plastic stretch. Transport the fan to the place of
assembly in its original packaging. During transport, connection cables, terminal box and wire connections
mustn’t be damaged. Load and unload the fan carefully, in order to avoid possible damage. Use suitable
lifting equipment. The fan should be stored in a safe, clean, dry, vibration free, location. A regular monthly
rapid spin of the impeller is recommended to prevent grease hardening and possible brinelling of the
bearings; the impeller should not be in the same angular position after rotation.
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.
ALWAYS WEAR APPROPRIATE PROTECTIVE CLOTHING (INCLUDING HARD
HATS, EYE PROTECTORS AND EAR DEFENDERS) WHEN WORKİNG IN THE
VICINITY OF THE FAN ASSEMBLY

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8. MAINTENANCE
Periodically check the screw connections, coil resistance, function of the safety components and control
elements. Only clean the fan manually, with a vacuum cleaner or with compressed air. Before service,
maintenance or repairing, disconnect the electrical connections and the impeller is stopped. The fan must be
cleaned when needed, at least once per year to maintain the capacity. The fan bearings are maintenance-
free and should be renewed only when necessary. Cleaning should be done without dislodging or damaging
the impeller. Make sure that there is no unexpected noise from the fan.
In addition to routine maintenance motor bearings will in the longer term require attention. If the motor
bearings are greased through extended lubricators, a quality of grease should be periodically applied in
accordance with the information on the fan or motor nameplate and/or instructions provided.
9. FAULT DETECTION
It is necessary to turn off the fan before checking the fan and the system. During maintenance, device
electrical connections should be cut entirely. All switches and circuit breakers should be locked by brought to
the OFF position. Also “DO NOT START” sign should be placed on the control panel that will consistently
stand.
Check that the electrical connections to the unit are secure. Check that the voltage applied at the fan
terminals is as specified on the motor nameplate, and is balanced. Measure the current on each phase (one
phase in the case of single-phase motors) of the motor in turn and check that the current consumption is
within the full load current specified on the motor nameplate.
Rotate the motor shaft by hand. Investigate any sound of grinding noises, internal chaffing, rubbing or
stiffness. Any observed defect may indicate that the bearings require lubrication or replacement. Ensure that
all fixings are secure. Make sure that the fan blade is not blocked by an object, if fan is still not working,
contact your supplier.
10. WARRANTY
•The warranty period starts from the date of delivery and it is for 2 years.
•Including all parts of the entire fan is under warranty of our company.
•The maximum repairing period is 30 business days. This period starts from the date of
notification to us.
•Fan's warranty does not include electrical connection errors, failures that may arise due to
voltage and user errors.
•The warranty is only valid under condition that the fan is assembled, operated and periodic
maintenance to be made according to this manual.

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ANNEX
11.1 Annex-1: Electrical Wiring Diagrams
Device connection 4KW and above.
Device connection under 4KW .