IEC 61591:1997/AMD2:2010

Amendment 2 - Household range hoods and other cooking fume extractors - Methods for measuring performance

Amendement 2 - Hottes de cuisine et autres extracteurs de fumée de cuisine à usage domestique - Méthodes de mesure de l'aptitude à la fonction

General Information

• Status: Published
• Publication Date: 27-Jul-2010
• ICS: 97.040.20 - Cooking ranges, working tables, ovens and similar appliances
• Technical Committee: SC 59K - Performance of household and similar electrical cooking appliances
• Drafting Committee: WG 3 - TC 59/SC 59K/WG 3
• Current Stage: DELPUB - Deleted Publication
• Completion Date: 14-Oct-2019

Relations

• Revised: IEC 61591:2019 - Cooking fume extractors - Methods for measuring performance
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 61591


®

Edition 1.0 2010-07



INTERNATIONAL



STANDARD




AMENDMENT 2
Household range hoods and other cooking fume extractors – Methods for
measuring performance




IEC 61591:1997/A2:2010(E)

---------------------- Page: 1 ----------------------
THIS PUBLICATION IS COPYRIGHT PROTECTED

Copyright © 2010 IEC, Geneva, Switzerland



All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form

or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester.
If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication,

please contact the address below or your local IEC member National Committee for further information.



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International Standards for all electrical, electronic and related technologies.

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---------------------- Page: 2 ----------------------
IEC 61591


®

Edition 1.0 2010-07



INTERNATIONAL



STANDARD




AMENDMENT 2
Household range hoods and other cooking fume extractors – Methods for
measuring performance



INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
K
ICS 97.040 ISBN 978-2-88912-074-1
® Registered trademark of the International Electrotechnical Commission

---------------------- Page: 3 ----------------------
– 2 – 61591 Amend. 2 © IEC:2010(E)




FOREWORD


This amendment has been prepared by subcommittee 59K: Ovens and microwave ovens,

cooking ranges and similar appliances, of IEC technical committee 59: Performance of
household and similar electrical appliances.


The text of this amendment is based on the following documents:


FDIS Report on voting

59K/202/FDIS 59K/207/RVD

Full information on the voting for the approval of this amendment can be found in the report
on voting indicated in the above table.
The committee has decided that the contents of this amendment and the base publication will
remain unchanged until the stability date indicated on the IEC web site under
"http://webstore.iec.ch" in the data related to the specific publication. At this date, the
publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued at a later date.

_____________
Title
Change the title on the cover page, the title page, on pages 5 and 7, as follows:
HOUSEHOLD RANGE HOODS AND OTHER COOKING FUME EXTRACTORS –
METHODS FOR MEASURING PERFORMANCE

1 Scope
Add the following new sentence to the second paragraph as a last sentence:
This standard deals also with down-draft systems arranged beside, behind or under the
cooking surface.
3 Definitions
Add the following new definitions:
3.9
down-draft system
cooking fume extractor intended for installation adjacent to household cooking ranges, hobs
and similar cooking appliances that draws vapour down into an internal / exhaust duct

---------------------- Page: 4 ----------------------
61591 Amend. 2 © IEC:2010(E) – 3 –


NOTE The filtered air may be discharged back into the room or ducted away.


3.10
highest setting for normal use
control setting of blower at highest speed for normal use, excluding the boost position setting


NOTE Setting should be marked on the appliance and described in the instructions for use.


3.11

boost position setting

control setting for occasional use at a higher fan speed


NOTE The setting shall be marked on the appliance and described in the instructions for use.
3.12
working point
intersection point of pressure/air flow curve and flue curve as defined in Clause 11
6 General conditions for measurements
6.2 Installation
Add to the first sentence after “the external blower”:
“or the down-draft system”
6.3 Supply voltage
Add to the first sentence after “the external blower”:
“or the down-draft system”
Add to the second sentence after “the external blower”:
“or the down-draft system”
6.4 Filters
Add to the first sentence after “the range hood”:
“or the down-draft system”

6.5 Fan control
Replace the existing Note 2 by the following new Note 2:
NOTE 2 A boost position is a setting for occasional use which results in a temporary higher fan speed. The boost
position shall be clearly marked. The boost position shall be described and explained in the user instructions.
Add after Note 2 the following new paragraph and a new Note 3:
Range hoods and other cooking fume extractors with a variable speed control shall be tested
with the fan control adjusted to 75 % of the maximum airflow. This highest setting of the
control for normal use shall be marked on the control panel and described in the instructions.
NOTE 3 The 75% does not include the boost position. The range between 76% and 100% is considered as boost
position.

---------------------- Page: 5 ----------------------
– 4 – 61591 Amend. 2 © IEC:2010(E)


7 Overall dimensions


Add to the first sentence after “the range hood”:


“or the down-draft system”


Add to the third sentence after “the range hood”:



“or the down-draft system”


Add in the second paragraph after “range hoods”:
“or the down-draft system”
9 Length of the supply cord
Replace the first sentence in the first paragraph with the following new sentence:
The distance between the points of entry of the cord into the range hood, the external blower
or the down-draft system and the plug is measured and stated in metres rounded downwards
to the nearest 0,05 m.
Replace the second paragraph with the following new paragraph:
It is stated if the range hood, the external blower or the down-draft system is for direct
connection to the fixed wiring.
10 Mass of the range hood
Replace the title of Clause 10 with the following new title:
10 Mass of the range hood or the down-draft system
Replace the existing text with the following new text:
The mass of the range hood, the external blower or the down-draft system, including any
filters, supply cord and plug, is measured and stated in kilograms, rounded upwards to the
nearest 0,1 kg.
11 Volumetric airflow
Replace the first sentence of the second paragraph with the following new sentence:
The air outlet of the range hood, the external blower or the down-draft system is connected to
a pressure compensation chamber (see Figure 1).
Replace the last sentence of the second paragraph with the following new sentence:
The grease filter is installed for the test.
Replace the third paragraph with the following new paragraph:

---------------------- Page: 6 ----------------------
61591 Amend. 2 © IEC:2010(E) – 5 –


The range hood, the external blower or the down-draft system is operated and by suitably

adjusting the auxiliary fan or the baffle, the airflow corresponding to various pressures can be

determined.


Replace the fifth paragraph with the following new paragraph:


The airflow of recirculating-air devices is determined when the pressure in the compensation

chamber is at ambient pressure.


Replace the sixth paragraph with the following new paragraph:


The airflow of air-extraction devices is determined for discharge into a flue, which has the
following pressure drop depending on the diameter of the air outlet orifice:
NOTE 1
Replace “range hood” with “device.”
12 Grease absorption
Replace the first sentence of the second paragraph with the following new sentence:
For range hoods with an external blower and down-draft systems the blower does not need to
be mounted during the grease absorption test.
Replace the first sentence of t
...

IEC 61591


®


Edition 1.0 2010-07



INTERNATIONAL



STANDARD



NORME
INTERNATIONALE
A MENDMENT 2
AM ENDEMENT 2

Household range hoods and other cooking fume extractors – Methods for
measuring performance

Hottes de cuisine et autres extracteurs de fumée de cuisine à usage
domestique – Méthodes de mesure de l'aptitude à la fonction


IEC 61591:1997-05/AMD2:2010-07(en-fr)

---------------------- Page: 1 ----------------------
THIS PUBLICATION IS COPYRIGHT PROTECTED


Copyright © 2010 IEC, Geneva, Switzerland


All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form

or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from

either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or

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International Standards for all electrical, electronic and related technologies.

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---------------------- Page: 2 ----------------------
IEC 61591



®



Edition 1.0 2010-07







INTERNATIONAL





STANDARD







NORME


INTERNATIONALE




A MENDMENT 2

AM ENDEMENT 2





Household range hoods and other cooking fume extractors – Methods for

measuring performance



Hottes de cuisine et autres extracteurs de fumée de cuisine à usage

domestique – Méthodes de mesure de l'aptitude à la fonction

















INTERNATIONAL

ELECTROTECHNICAL

COMMISSION


COMMISSION

ELECTROTECHNIQUE


INTERNATIONALE




ICS 97.040.20 ISBN 978-2-8322-0000-0




Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

---------------------- Page: 3 ----------------------
– 2 – IEC 61591:1997/AMD2:2010

 IEC 2010




FOREWORD


This amendment has been prepared by subcommittee 59K: Ovens and microwave ovens,

cooking ranges and similar appliances, of IEC technical committee 59: Performance of

household and similar electrical appliances.


The text of this amendment is based on the following documents:


FDIS Report on voting

59K/202/FDIS 59K/207/RVD

Full information on the voting for the approval of this amendment can be found in the report
on voting indicated in the above table.
The committee has decided that the contents of this amendment and the base publication will
remain unchanged until the stability date indicated on the IEC web site under
"http://webstore.iec.ch" in the data related to the specific publication. At this date, the
publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.

_____________

Title
Change the title on the cover page, the title page, on pages 5 and 7, as follows:
HOUSEHOLD RANGE HOODS AND OTHER COOKING FUME EXTRACTORS –
METHODS FOR MEASURING PERFORMANCE

1 Scope
Add the following new sentence to the second paragraph as a last sentence:
This standard deals also with down-draft systems arranged beside, behind or under the
cooking surface.
3 Definitions
Add the following new definitions:
3.9
down-draft system
cooking fume extractor intended for installation adjacent to household cooking ranges, hobs
and similar cooking appliances that draws vapour down into an internal / exhaust duct

---------------------- Page: 4 ----------------------
IEC 61591:1997/AMD2:2010 – 3 –

 IEC 2010

NOTE The filtered air may be discharged back into the room or ducted away.


3.10

highest setting for normal use
control setting of blower at highest speed for normal use, excluding the boost position setting


NOTE Setting should be marked on the appliance and described in the instructions for use.


3.11

boost position setting

control setting for occasional use at a higher fan speed


NOTE The setting shall be marked on the appliance and described in the instructions for use.
3.12
working point
intersection point of pressure/air flow curve and flue curve as defined in Clause 11
6 General conditions for measurements
6.2 Installation
Add to the first sentence after “the external blower”:
“or the down-draft system”
6.3 Supply voltage
Add to the first sentence after “the external blower”:
“or the down-draft system”
Add to the second sentence after “the external blower”:
“or the down-draft system”
6.4 Filters
Add to the first sentence after “the range hood”:
“or the down-draft system”

6.5 Fan control
Replace the existing Note 2 by the following new Note 2:
NOTE 2 A boost position is a setting for occasional use which results in a temporary higher fan speed. The boost
position shall be clearly marked. The boost position shall be described and explained in the user instructions.
Add after Note 2 the following new paragraph and a new Note 3:
Range hoods and other cooking fume extractors with a variable speed control shall be tested
with the fan control adjusted to 75 % of the maximum airflow. This highest setting of the
control for normal use shall be marked on the control panel and described in the instructions.
NOTE 3 The 75% does not include the boost position. The range between 76% and 100% is considered as boost
position.

---------------------- Page: 5 ----------------------
– 4 – IEC 61591:1997/AMD2:2010

 IEC 2010

7 Overall dimensions


Add to the first sentence after “the range hood”:


“or the down-draft system”


Add to the third sentence after “the range hood”:


“or the down-draft system”


Add in the second paragraph after “range hoods”:
“or the down-draft system”
9 Length of the supply cord
Replace the first sentence in the first paragraph with the following new sentence:
The distance between the points of entry of the cord into the range hood, the external blower
or the down-draft system and the plug is measured and stated in metres rounded downwards
to the nearest 0,05 m.
Replace the second paragraph with the following new paragraph:
It is stated if the range hood, the external blower or the down-draft system is for direct
connection to the fixed wiring.
10 Mass of the range hood
Replace the title of Clause 10 with the following new title:
10 Mass of the range hood or the down-draft system
Replace the existing text with the following new text:
The mass of the range hood, the external blower or the down-draft system, including any
filters, supply cord and plug, is measured and stated in kilograms, rounded upwards to the
nearest 0,1 kg.
11 Volumetric airflow
Replace the first sentence of the second paragraph with the following new sentence:
The air outlet of the range hood, the external blower or the down-draft system is connected to
a pressure compensation chamber (see Figure 1).
Replace the last sentence of the second paragraph with the following new sentence:
The grease filter is installed for the test.
Replace the third paragraph with the following new paragraph:

---------------------- Page: 6 ----------------------
IEC 61591:1997/AMD2:2010 – 5 –

 IEC 2010

The range hood, the external blower or the down-draft system is operated and by suitably

adjusting the auxiliary fan or the baffle, the airflow corresponding to various pressures can be

determined.


Replace the fifth paragraph with the following new paragraph:


The airflow of recirculating-air devices is determined when the pressure in the compensation

chamber is at ambient pressure.


Replace the sixth paragraph with the following new paragraph:


The airflow of air-extraction devices is determined for discharge into a flue, which has the
following pressure drop depending on the diameter of the air outlet orifice:
NOTE 1
Replace “range hood” with “device.”
12 Grease absorption
Replace the first sentence of the second paragraph with the following new sentence:
For range hoods with an external blower and down-draft systems the blower does not need to
be mounted during the grease absorption test.
Replace the first sentence of the third paragraph with the following new sentence:
The mass of the range hood or down-draft systems is measured without the grease filter and
without the odour extraction filter of recirculating-air “devices”.
Replace the third sentence of the third paragraph with the following new sentence:
The range hood or the down-draft system is installed in a chamber, the arrangement being
such that all the air in the chamber has to pass through the device.
Replace the sentence of the fourth paragraph with the following new sentence:
The air outlet of the range hood or the down-draft system is connected to an absolute filter
having a collecting efficiency of at least 99,995 %.

Replace the last sentence of the fourth paragraph with the following new sentence:
The arrangement is shown in Figure 3 and 3.A.
Add the following new sentence after the first sentence of the sixth paragraph:
For down-draft systems the hob element is placed according to Figure 3.A.
Replace the first sentence of the seventh paragraph with the following new sentence:
The range hood or the down-draft system is operated at the highest setting of the control,
ignoring any boost setting.
Replace the second sentence of the seventh paragraph with the following new sentence:

---------------------- Page: 7 ----------------------
– 6 – IEC 61591:1997/AMD2:2010

 IEC 2010

The auxiliary fan is adjusted to the working point linked to the largest diameter the device

under test allows in delivery condition (see Figure 2).


Replace the third sentence of the seventh paragraph with the following new sentence:


The pressure above the recirculating-air devices is adjusted so that the airflow is that

measured during the test of Clause 11.


Replace the last sentence of the eighth paragraph with the following new sentence:


The position of the pan and means for supplying the oil and water is also shown Figure 3 and

3.A.
Replace the last sentence of the ninth paragraph with the following new sentence:
The device under test and the auxiliary fan are switched off 10 min later.
Replace the first sentence of the tenth paragraph with the following new sentence:
The range hood or the down-draft system is weighed again after removal of the grease filter
and the mass of oil retained is determined.
Replace the description of wr in the formula of the twelfth paragraph as follows:
wr is the mass of oil retained in the airways of the range hood or the down-draft system;
13 Odour extraction
Replace the first and the second sentences of the first paragraph with the following new
sentences:
This method is used to assess the effectiveness of odour filters of recirculating-air devices.
It is also used to assess the capability of air-extraction devices to remove odours, in which
case the airflow is adjusted to the actual working point (see Clause 11 and Figure 2).
Add the following new sentence after the third sentence of the second paragraph:
The down-draft system has to be installed according to the manufacturer’s instructions.

Add the following new sentence after the fourth sentence of the second paragraph:
For testing of down-draft systems all wall cabinets are removed.
Replace the fifth sentence of the second paragraph with the following new sentence:
If an air-extraction devices is being tested, it is necessary to provide a ventilating grille which
can be closed and an air dispersion screen.
Replace the seventh sentence of the second paragraph with the following new sentence:
For range hoods or down-draft systems with an external blower, the external blower does not
need to be mounted during the odour extraction test.

---------------------- Page: 8 ----------------------
IEC 61591:1997/AMD2:2010 – 7 –

 IEC 2010

NOTE 2


Replace “range hoods” with “devices”.


Replace the first sentence of the third paragraph with the following new sentence:


The characteristics of the test room are established without the range hood “or down-draft

systems” being operated.


NOTE 4

Replace the existing note 4 with the following new note 4:

The concentration in the test room (C ) can be measured without any range hood or down-draft system being
1
installed.
Replace the last sentence of the sixth paragraph with the following new sentence:
They are then fitted into the range hood or down-draft system which is operated for 30 min.
Replace the first and the second sentences of the seventh paragraph with the following new
sentences:
The device under test is then operated and the MEK solution dripped onto the heated pan so
that 312 g has evaporated within 30 min ± 15 s. The air-extraction devices are switched off,
3
the ventilating grille closed, the shut-off valve closed and a fan having an airflow of 250 m /h
3
± 50 m /h positioned on the centre of the floor operated.
Replace the fourth sentence of the seventh paragraph with the following new sentence:
With the recirculating-air devices still in operation, the time taken for the concentration of
MEK to fall from C to 15 % of C is also determined.
2 1
NOTE 7
Replace the existing note 7 with the following new note 7:
Recirculating-air devices are not switched off before measuring C .
2
NOTE 8
Replace the existing note 8 with the following new note 8:

The odour dispersion time is not measured for devices.
Replace the description of C and C in the formula of the eighth paragraph as follows:
1 2
C is the concentration of MEK at the end of application without the device under test

1
operating;
C is the concentration of MEK at the end of application with the device under test operating.
2
14 Effectiveness of the hob light
Replace the second paragraph by the following new paragraph:

---------------------- Page: 9 ----------------------
– 8 – IEC 61591:1997/AMD2:2010

 IEC 2010

The hob light is switched on and a suitable lux meter is used to measure the luminance at the

points on the board described below.


Replace the third paragraph by the following new paragraphs:


If the cooker hood is intended to be installed over a 600 mm hob, the measurement points are

point 1, 2, 3, 4 and 5. The arithmetic average of the five measurements is calculated and this

value is stated as the luminance in lux.


If the cooker hood is intended to be installed over a hob larger than 600 mm, the

measurement points are points 1, 2, 3, 4, 5, 6, 7, 8 and 9. The arithmetic average of the nine

measurements is calculated and this value is stated as the luminance in lux.
Island range hoods (directly mounted on the ceiling) are mounted above the measurement
plane. The centre lines of the hood shall be identical to the centre lines of the measurement
plane.
15 Maintenance
Replace the first dashed item with the following new item:
– the ease
...