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

• Amends: IEC 61591:1997 - Household range hoods - Methods for measuring performance
• Effective Date: 05-Sep-2023
• 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)
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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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
– 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

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.
– 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:

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)

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

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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.

About IEC publications
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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

– 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

 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.
– 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:

 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:

– 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 i
...