BCA GB 13756 0907.fm by yyc62487

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                                       Box Fan Type BCA
                                 Installation and Maintenance

1. Application
2. Handling
   2.1   Marking
   2.2   Weight
   2.3   Transport

3. Storage
4. Installation
                                                           Main components
   4.1   Prior to installation                             Pos. 01: Cabin unit               Pos. 06: Lock (key is included)
   4.2   Installation                                      Pos. 02: Inspection door          Pos. 07: Hinge
   4.3   Duct connection                                   Pos. 03: Motor                    Pos. 08: Hoisting lug
                                                           Pos. 04: Impeller                 Pos. 09: Connection
5. Wiring                                                  Pos. 05: Base frame with anti-    Pos. 10: Corner cleat
                                                           vibration mountings               Pos. 07: Dørhængsel
   5.1   Three-phase motors
   5.2   Manual stepless control of single-phase           Fig. 1 Main components for box fan type BCA
         motors
   5.3   Automatic pressure control of single-phase        Box fan type BCA must not be used:
         motors                                            – in explosive environments
   5.4   Arrangement og pressure transducer                – for transport of solid particles

6. Start of operation
                                                           Temperature range:
   6.1   Prior to start of operation
                                                           – Air: -10°C to 80°C.
   6.2   Starting procedure
                                                           – Surroundings: -20°C to 40°C.
7. Maintenance
   7.1   Protection prior to inspection and                2. Handling
         maintenance                                       2.1 Marking
   7.2   Fan casing                                        The box fan is provided with a standard nameplate
   7.3   Impeller                                          with Novenco’s name and address. It also mentions
   7.4   Motor                                             product type, e.g. BCA 400, max. r.p.m., weight and
   7.5   Dismounting of inspection door                    CE-mark.
   7.6   Dismounting of motor
   7.7   Mounting of motor                                 2.2 Weight
   7.8   Fault localization                                The total weights (kg) shown in the table are determi-
                                                           ned on the basis of type/size and motor.
8. Sound                                                                  1 x 230V MG       1 x 230V MGE        3 x 400V MT

9. Declaration of conformity                               BCA 250              42               43                  43
                                                           BCA 315              54               55                  55
                                                           BCA 400              76               77                  76
                                                           BCA 500             104                                  110


1. Application                                             Motor designations:
The box fan type BCA is used as an induvidual exhaust      – MG: Motor used for voltage control
unit or in systems for extraction from residential buil-   – MGE: Motor with integrated frequency converter
dings, industrial premises, workshops, halls, instituti-   – MT: Three-phase motor for frequency control or
ons, offices etc.                                                  fixed speed.



MU 13756 0907                                                                                                                  1
                                                             4.2 Installation
                                                             As standard the box fan is supplied with separate base
                                                             frame. Mounting of base
                                                             frame and arrangements, see fig. 3. Mount base frame
                                                             (item 02) according to chosen arrangement by using
                                                             the enclosed set screws M12 x 20, (item 03).
                                                             After mounting of base frame, mount enclosed plugs
                                                             (item 01) in the hole of the corner cleat. Corner cleats,
                                                             see fig. 1, (item 10).
                                                             Mount the box fan on a horizontal, solid and level fou-
                                                             ndation whose natural frequency must differ at least
                                                             20% from the fan speed. By way of example a cement
                                                             flag on the top of a solid wooden structure can be used.
                                                             Place the fan separately on the foundation.
                                                             To ensure easy inspection the inspection door must be
Fig. 2 Placing of hoisting lugs                              able to open through 90°.
                                                             Periodic operation may cause condensation water in
                                                             the motor, dismount drain plug in motor. See motor
2.3 Transport                                                supplier’s instructions. Use installation arrangement
The box fan type BCA is delivered on pallet to allow         A. See fig. 3.
fork-lift transport. Further, the box fan is provided with
hoisting lugs. See fig. 2.
In case of transport through narrow passages the in-
spection door can with advantage be dismounted, pri-
or to commencing the transport.
Dismounting of inspection door, see section 7.5.
When transporting the box fan be careful not to deform
cabin unit and connections etc.

Do not lift the box fan in motor or inlet and outlet
opening.

3. Storage
The box fan type BCA cannot stand outdoor storage in
the original packing.
If the fan is stored indoors under well-ventilated condi-
tions with no risk of condensation the storage period is
6 months.
The storage place must not be exposed to vibrations li-
kely to damage the motor bearings.                           Fig. 3 Mounting of base frame and arrangements

If the storage period exceeds 3 months, it is recommen-
ded to turn the impeller regularly by hand.                  4.3 Duct connection
                                                             Always connect the fan through flexible connections.
4. Installation                                              In so doing transmission of vibrations, if any, is avoi-
4.1 Prior to installation                                    ded.
Prior to attachement make sure that the impeller rota-       The duct system must be designed to ensure smooth
tes freely in the fan casing.                                and undisturbed flow of air. Avoid, for instance, sharp
                                                             duct bends immediately in front of and after the fan.
                                                             See fig. 4 for duct connection.



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                                                            – NV 225 - 5A
                                                            – NV 228 - 8A
                                                            – NV 265 connected to potentiometer NV 283 A.

                                                            NV 265 connected to NV 283 A is used for remote con-
                                                            trolling the fan. Place NV 265 next to the fan. Use a
                                                            four-wire signal cable between NV 283 A and NV 265.

                                                            For connection and adjustment: See installation in-
                                                            structions supplied with voltage controller.
                                                            The shown terminals of the voltage controllers and the
                                                            motor terminal are marked as shown in the installation
                                                            instructions.

                                                            Frequency control of Grundfos MGE motor
                                                            Connect motor to 1 x 230V.

                                                            Potentiometer type:
Fig. 4 Duct connection
                                                            – NV 283 G.

Insulate the duct system owing to the risk of heat loss,
                                                            NV 283 G is used for remote controlling the fan. Use a
fire, condensation, and noise from the system.
                                                            four-wire shielded signal cable between motor and NV
If the fan is mounted with only one duct connection, a
                                                            283 G. Max length of shielded cable: 100 m.
wire guard (max. mesh size 12 x 12 mm) should be
mounted on the other connection.
                                                            For connection and adjustment: See installation in-
                                                            structions supplied with controller. (Fig. 5).
5. Wiring
Supply cable to the fan is effected according to current
                                                            The shown terminal of the controller and the motor ter-
regulations.
                                                            minal are marked as shown in the installation instruc-
Connection is effected according to current regulations
                                                            tions.
and by authorized personnel.
                                                            Note: It is recommended to follow the motor instruc-
The connection is made with flexible cable.
                                                            tions from Grundfos.
5.1 Three-phase motors
The motor is connected through a motor starter deter-
mined on the basis of the motor rated current. The con-
nection is effected direct in the terminal box of the mo-
tor.

5.2 Manual stepless control of single-phase motors
Connection to the fan is effected direct in the terminal
box of the motor.
The motors have built-in thermal protection.

Voltage control
Connect motor through stepless voltage controller.

Controller type:
– NV 33 - 1,5A
– NV 15 - 3,5A                                              Fig. 5 Diagram NV 283 G



                                                                                                                  3
5.3 Automatic pressure control of                          The shown terminal of the controller and the motor ter-
    single-phase motors                                    minal (Grundfos MGE) are marked as shown in the in-
Connection of the fan is effected direct in the terminal   stallation instructions.
box of the motor.                                          Note: It is recommended to follow the motor instruc-
The motors have built-in thermal protection.               tions from Grundfos.

Voltage control                                            5.4 Arrangement of pressure transducer
Connect motor through voltage controller.                  Place pressure transducer fig. 7, (item 02) at test point
Connect pressure transducer to voltage controller.         of duct system. The test point should be at the last
                                                           exhaust fittings of the duct system, e.g. cooker hood.
Controller type:
                                                           Use signal cable between pressure transducer and con-
– NV 265 C.P.R.
                                                           stant pressure controller (item 01).
– NV 202
– NV 265 connected to pressure controller NV 301           Mounting of hose mounting duct, fig. 8 (item 03).
– Pressure transducer type NV 277.
Use a four-wire signal cable between pressure transdu-
cer and control unit.

For connection and adjustment: See installation in-
structions supplied with controller.
The shown terminal of the controller and the motor ter-
minal are marked as shown in the installation instruc-
tions.

Frequency control
Grundfos MGE: Connect motor to 1 x 230V.
Three-phase motors: Connect motor through separate
frequency converter.

Controller type:
– NV 301

Use a four-wire shielded signal cable between motor/
frequency converter and NV 301. Max length of shield-
ed cable: 100 m.

For connection and adjustment. See installation in-
structions supplied with controller. (Fig. 6).
                                                           Fig. 7 Arrangement of pressure transducer




Fig. 6 Diagram NV 301                                      Fig. 8 Mounting of hose mounting duct




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Mounting procedure:                                         ons occurring during operation will normally be due to
1) Drill dia=8 mm hole in duct.                             accumulations of dust or dirt on hub or blades and will
2) Mount hose mounting duct in dia=8 mm hole.               disappear after cleaning. Should this not be the case,
3) Attach pressure transducer (item 02) to duct.            expert assistance should be called in immediately as
   Note: Pressure transducer is adjusted for horizon-       continued vibrations may damage the motor bearings.
   tal mounting, and must be mounted horizontally in        Check min. every six months if the impeller needs to be
   order to give correct signal.                            cleaned.
4) Attach plastic hose to hose mounting duct and con-       When cleaning the impeller be careful not to expose it
   nection of pressure transducer, marked U.T.              to shocks etc.

                                                            7.4 Motor
6. Start of operation
                                                            The motor is provided with sealed-for-life bearings.
6.1 Prior to start of operation
                                                            Replace the bearings according to the motor manufac-
Prior to start of operation check that fan and duct con-
                                                            turer’s instructions.
nections are clean and free from tools and foreign sub-
stances.                                                    7.5 Dismounting of inspection door
Also check that the electric connections meet the pre-      When transporting the fan through narrow passages
scribed requirements.                                       or servicing the motor, the inspection door can be
                                                            removed.
Check direction of rotation of the fan by short-time
                                                            See fig. 9 for removal.
operation according to arrow-plate located on the mo-
tor end.                                                    Prior to commencing the work, follow the procedure
                                                            described in section 7.1.
6.2 Starting procedure
– Start the fan
– Check that no abnormal noises occur
– Check that the vibration level is normal
– After 30 minutes of operation check that the fan ope-
   rates normally

7. Maintenance
7.1 Protection prior to inspection and maintenance
When the fan is out of operation for reasons of inspec-
tion or repair/maintenance, the electric system must
be switched off and protected so that the fan is not cut
in unintentionally.
Note: Do not open the inspection door until the electric
system is switched off and the impeller has come to a
                                                            Fig. 9 Dismounting of inspection door
complete standstill.

7.2 Fan casing
The fan casing requires as standard no maintenance          Dismounting procedure:
other than ordinary cleaning.                               1) Open inspection door
When cleaning the fan casing wash it carefully with         2) Using a screwdriver, remove inpection door by
soap. Make sure the fan casing is dry prior to restarting      removing pin from hinge »top« (item 01) remove
the fan.                                                       corresponding pin from hinge »bottom«
It is recommended to clean the fan casing at least every
                                                            In dismounting and disassembling the fan be careful
twelve months.
                                                            not to expose the individual parts to shocks etc. likely
7.3 Impeller                                                to damage the motor or other fan components.
From the factory the impeller has been carefully balan-     Note: Do not mount operating handles on the locks of
ced in order to ensure vibration-free operation. Vibrati-   the inspection door.


                                                                                                                   5
7.6 Dismounting of motor                                   To start the fan follow the procedure described in sec-
Prior to commencing the work, follow the procedure         tion 6.
described in section 7.1.
For dismounting of inspection door. See section 7.5.       7.8 Fault localization
See fig. 10: Dismounting/mounting of motor.                These are likely causes of breakdowns/failures.

                                                           Deficiency in performance:
                                                           – Blocked air supply to the fan inlet side
                                                           – Damper closed
                                                           – Duct blockage
                                                           – Wrong direction of rotation of impeller
                                                           – Motor defective
                                                           – Motor cut out
                                                           – Electric control defective
                                                           – Electric control cut out
                                                           – Mounting of electric control not correct

                                                           Noise/vibrations:
                                                           – Bearings in motor defective
                                                           – Impeller out of balance
                                                           – Impeller worn/damaged
Fig. 10 Dismounting/mounting of motor                      – Screws/components loose
                                                           – Fan operates in the stalling area. May result in break-
Dismounting procedure:
                                                             down. Repair failures, see »Deficiency in performan-
1) Remove centre screw (item 01).
                                                             ce«
2) Dismount impeller (item 02) by means of a puller
                                                           – Wrong direction of rotation of impeller
   fastened in the two threaded holes of the hub boss.
3) Remove 4 plastic plugs (item 03)                        8. Sound
4) Remove 4 set screws (item 04)                           The sound generation of the fan depends on installati-
5) Dismount motor (item 05). Note the placing of the       on and operating conditions, which means that no ge-
   motor prior to dismounting.                             neral data of the sound generation can be given. Refe-
                                                           rence is made to our catalogues for calculation of the
In dismounting and disassembling the fan be careful        specific sound generation.
not to expose the individual parts to shocks etc. likely
to damage the motor or other fan components.

7.7 Mounting of motor
Mounting procedure:
1) After servicing remount the motor; see that the mo-
   tor (item 05) is correctly placed on the inspection
   door
2) Attach the motor by means of 4 set screws (item 04)
3) Attach 4 plastic plugs (item 03).
4) Mount the impeller (item 02) by means of screws
   fastened in the threaded hole of the motor shaft. Fix
   the impeller hub to rest against the motor shaft col-
   lar.
5) Mount the centre screw (item 01).




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                                                        Novenco A/S
                                                        Industrivej 22   Tel. 70 12 42 22
                                                        4700 Naestved    Fax 55 75 65 50
                                                        Denmark          www.novenco.biz


9. Declaration of conformity
In accordance with -, EC Directive for Machinery 98/
37/EC annex II, A.

Manufacturer: Novenco A/S
Address:      Industrivej 22
              4700 Naestved
              Denmark

We declare hereby that:

Novenco box fan series, type BCA 250-500

a) meet the fundamental requirements of the direc-
   tives below, on condition that the products have
   been installed in accordance with the instructions
   included in the supply. Should any alteration be
   made to the products will this declaration no lon-
   ger apply.

   Directives:
   –   EEC Directives for Machinery 98/38/EC
   –   EMC Directive 89/336/EEC
       (amended by 92/31/EC and 93/68/EEC)
   –   Low Voltage Directive 73/23/EC
       (amended by 93/68/EC)

b) have been manufactured in accor-dance with follo-
   wing harmonised standards:
   –    EN 292-1, EN 292-2, EN 292-2/A1,
        EN 294
   –    EN 61800-3
   –    EN 60 034-1, EN 50 178

Naestved, 01.09.2007



Bjarne Soerensen
Department Manager
Novenco A/S




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