Schako Novenco NovAx ACP Smoke Installation And Maintenance Manual Download Page 5

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Novenco Building & Industry A/S

Industrivej 22

Tel. +45 70 77 88 99

4700 Naestved

www.novenco-building.com

Denmark

6.5 Detaching the motor

Before motor detachment, disconnect the
power supply and motor cable. Next,
detach the ducts and outlet guide vane (fig.
8 pos. 13, 10, 11, and 14) on the outlet side.

Remove the impeller centre screw (pos. 09)
and centre disc (pos. 08).

Detach the impeller using a puller secured
in the two threaded puller holes in the hub
boss (pos. 12).

Loosen the screws in the motor shell (pos.
05 and 06). The motor (pos. 01) and motor
flange (pos. 02) can then be detached.

When dismantling the fan, be careful not to
expose individual parts to impacts or other
forces that might damage the motor
bearings or fan parts.

6.6 Fitting the motor

After servicing is complete the motor must
be refitted. Check that the motor flange (fig.
8 pos. 02) is correctly positioned and that
the motor shaft is concentrically positioned
in the fan housing before tightening the
bolts (pos. 06).

Refit the impeller (pos. 07) on the motor
shaft by means of a puller secured in the
threaded hole on the motor shaft. Tighten
the impeller hub against the motor shaft
collar. Check that blade clearance is equal
around the entire circumference of the
housing. If this is not the case, adjust the
motor position in the suspension system.

Now fit the centre screw (pos. 09) and centre
disc (pos. 08). Replace lock washers and
lock nuts when reassembling the fan.
Finally, connect the motor cable in the
terminal box (pos. 01) and any ducts and
outlet guide vane (pos. 13).

To restart the fan, follow the procedure
described in section 5. Start-up.

6.7 Blade pitch adjustment

The blade pitch is factory set using a special
tool (fixture) to provide the output required
by the customer.

If a different output is required, it is possible
to alter blade pitch. This requires
knowledge of the motor load and the max.
permissible blade pitch in relation to the
motor rating (in case of blade pitch
increase).

Please contact Novenco before adjustment
of blade pitch. Special tools for blade pitch
adjustment and instructions for impeller
balancing are available from Novenco.

A brochure describing the blade pitch tool
and its use is available on request.

6.8 Fault finding

Possible operating faults are described in

the following.

Insufficient output

Blocked air supply on the inlet side.

• Damper closed
• Duct blocked
• Supply fan, if any, stopped
• Motor defective
• Motor cut out
• Incorrect direction of impeller rotation

Noise/vibration

• Bearings in electric motor defective
• Impeller out of balance
• Impeller worn/damaged
• Bolts/components loose
• Impeller blades have different pitch
• Fan operating in "stall" mode – this

may damage the system and should be
remedied immediately, see
"Insufficient output".

7. Testing functionality and

operational readiness

To maintain their fire approval, ACP and
ACG Smoke fans must be tested every three
months with respect to functionality and
operational readiness.

If ACP and ACG Smoke fans are also used
for ventilation purposes, such tests need
only be performed at six-month intervals
provided the fan is started at least once a
day by means of a time switch or carbon
monoxide sensor.

7.1 Periodic inspection

NovAx smoke fans must always be
maintained in proper operating condition.
To ensure satisfactory operation and long
service life, the fans should be inspected
every six months.

Such inspection should include the
following.

• Measurement of power consumption
• Measurement of fan housing vibration
• Control of fixation bolt torque and, if

necessary, readjustment

• Visual inspection of impeller, housing

and wiring

• Cleaning

– Use compressed air to clean the

inside

– Use water to clean the outside

It is recommended that a log be kept of all
values and observations.

8. Sound

The sound generated by the fans depends
on installation and operating conditions,
and general data on sound generation is
therefore unavailable.

Please refer to the NovAx catalogue
material and the AirBox program for
calculation of specific sound emissions.

9. Declaration of conformity

Novenco Building & Industry A/S
Industrivej 22
4700 Naestved
Denmark

hereby declares that Novenco axial flow fan
types ACP Smoke 400-1600 and ACG
Smoke 400-1600 have been manufactured
in accordance to the below directives of the
European Council and that they comply
with the below standards and regulations.

Directives

– Machinery 2006/42/EU
– ECO design 2009/125/EU and regula-

tion 2017/1369/EU

– EMC 2014/30/EU
– LVD 2014/35/EU

Applied standards and regulations

– ANSI/AMCA 300-14
– EU regulation 327/2011
– DS/EN 1037 + A1:2008
– DS/EN ISO 1461:2009
– DS/EN 1886:2008
– DS/ISO 2954:2012
– DS/EN ISO 5801:2017
– DS/EN ISO 9001:2015
– EN ISO 12100:2011
– DS/EN 12101-3:2015
– DS/EN ISO 12499:2009
– DS/EN ISO 12944-2:2017
– ISO 13348:2007, class AN3
– DS/EN ISO 13857:2008
– DS/EN ISO 14001:2015
– DS/ISO/TR 14121-2:2012
– ISO 14694:2003
– DS/EN 16798-3:2017
– DS/ISO 21940-11:2016
– DS/ISO 21940-14:2012
– DS/EN 60204-1:2006 + A1:2009
– DS/EN 61000-6-1:2007
– DS/EN 61000-6-2:2005
– DS/EN 61000-6-3:2007 + A1:2011
– DS/EN 61000-6-4:2007 + A1:2011
– DS/EN 61800-3:2005, class C2 +