IEC 60335-2-42:2002/AMD2:2017

Amendment 2 - Household and similar electrical appliances - Safety - Part 2-42: Particular requirements for commercial electric forced convection ovens, steam cookers and steam-convection ovens

Amendement 2 - Appareils électrodomestiques et analogues - Sécurité - Partie 2-42: Règles particulières pour les fours électriques à convection forcée, les cuiseurs à vapeur électriques et les fours combinés vapeur-convection électriques à usage collectif

General Information

• Status: Published
• Publication Date: 12-Apr-2017
• ICS: 97.040.50 - Small kitchen appliances
• Technical Committee: TC 61 - Safety of household and similar electrical appliances
• Drafting Committee: MT 32 - TC 61/MT 32
• Current Stage: DELPUB - Deleted Publication
• Start Date: 05-Nov-2021
• Completion Date: 26-Oct-2025

Relations

• Amends: IEC 60335-2-42:2002 - Household and similar electrical appliances - Safety - Part 2-42: Particular requirements for commercial electric forced convection ovens, steam cookers and steam-convection ovens
• Effective Date: 05-Sep-2023
• Revised: IEC 60335-2-42:2021 - Household and similar electrical appliances - Safety - Part 2-42: Particular requirements for commercial electric forced convection ovens, steam cookers and steam-convection ovens
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 60335-2-42 ®
Edition 5.0 2017-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
A MENDMENT 2
AM ENDEMENT 2
Household and similar electrical appliances – Safety –
Part 2-42: Particular requirements for commercial electric forced convection
ovens, steam cookers and steam-convection ovens

Appareils électrodomestiques et analogues – Sécurité –
Partie 2-42: Règles particulières pour les fours électriques à convection forcée,
les cuiseurs à vapeur électriques et les fours combinés vapeur-convection
électriques à usage collectif
IEC 60335-2-42:2002-11/AMD2:2017-04(en-fr)

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IEC 60335-2-42 ®
Edition 5.0 2017-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
A MENDMENT 2
AM ENDEMENT 2
Household and similar electrical appliances – Safety –

Part 2-42: Particular requirements for commercial electric forced convection

ovens, steam cookers and steam-convection ovens

Appareils électrodomestiques et analogues – Sécurité –

Partie 2-42: Règles particulières pour les fours électriques à convection forcée,

les cuiseurs à vapeur électriques et les fours combinés vapeur-convection

électriques à usage collectif
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 97.040.50 ISBN 978-2-8322-4179-0

– 2 – IEC 60335-2-42:2002/AMD2:2017
© IEC 2017
FOREWORD
This amendment has been prepared by IEC technical committee 61: Safety of household and
similar electrical appliances.
The text of this amendment is based on the following documents:
FDIS Report on voting
61/5325/FDIS 61/5386/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 website 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.
NOTE The attention of National Committees is drawn to the fact that equipment manufacturers and testing
organizations may need a transitional period following publication of a new, amended or revised IEC publication in
which to make products in accordance with the new requirements and to equip themselves for conducting new or
revised tests.
It is the recommendation of the committee that the content of this publication be adopted for implementation
nationally not earlier than 12 months or later than 36 months from the date of publication.

IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
to be useful for the correct
that it contains colours which are considered
understanding of its contents. Users should therefore print this document using a
colour printer.
_____________
© IEC 2017
1 Scope
Add in the second paragraph, the words, “and similar”, after the words, “….not intended for
household”, to read:
“…not intended for household and similar use,…”.
Add the following text after the first paragraph:
This standard deals also with electrically operated commercial forced convection ovens,
steam cookers, steam-convection ovens intended for use on board ships, for which
Annex AA is applicable.
Replace Note 101 by the following:
NOTE 101 These appliances are used for commercial processing of food, for example in kitchens of restaurants,
canteens, hospitals and in commercial enterprises such as bakeries, butcheries, etc.
Replace the first dashed item of Note 102 by the following:
– for appliances intended to be used in vehicles or aircrafts, additional requirements may be necessary;
Replace the third dashed item of Note 103 by the following:
– appliances for continuous mass production of food.
2 Normative references
Replace the existing text by the following:
This clause of Part 1 is applicable except as follows.
Addition:
IEC 60068-2-6, Environmental testing – Part 2-6: Tests – Test Fc: Vibration (sinusoidal)
IEC 60068-2-27, Environmental testing – Part 2-27: Tests – Test Ea and guidance: Shock
IEC 60068-2-52, Environmental testing – Part 2: Tests – Test Kb: Salt mist, cyclic (sodium,
chloride solution)
IEC 60584-1, Thermocouples – Part 1: EMF specifications and tolerances
ISO 898-1, Mechanical properties of fasteners made of carbon steel and alloy steel – Part 1:
Bolts, screws and studs with specified property classes – Coarse thread and fine pitch thread
ISO 3506-1, Mechanical properties of corrosion-resistant stainless steel fasteners – Part 1:
Bolts, screws and studs
ISO 3506-2, Mechanical properties of corrosion-resistant stainless steel fasteners – Part 2:
Nuts
ISO 3506-3, Mechanical properties of corrosion-resistant stainless steel fasteners – Part 3:
Set screws and similar fasteners not under tensile stress
ISO 3506-4, Mechanical properties of corrosion-resistant stainless steel fasteners – Part 4:
Tapping screws
– 4 – IEC 60335-2-42:2002/AMD2:2017
© IEC 2017
3 Definitions
Replace the title of Clause 3 but not the clause number by the following:
Terms and definitions
Add the following new definitions:
3.110
functional surface
surface that is intentionally heated by an internal heat source and has to be hot to carry out
the function for which the appliance is intended
Note 1 to entry: An example is the heated sheath of a tubular heating element.
3.111
adjacent surface
surface adjacent to a functional surface and which can become hot through conduction
7 Marking and instructions
7.1 Replace the text of the addition by the following:
Appliances shall be marked with the rated pressure, in kilopascals (kPa), on pressurized
parts of the appliance.
If appliances have external accessible surfaces, for which temperature rise limits are
specified in Table 101 and for which the provisions of footnote b to Table 101 apply, then the
appliance shall be marked with symbol IEC 60417-5041 (2002-10), or with the substance of
the following:
CAUTION: Hot surfaces.
7.6 Delete symbol 5021 of IEC 60417-1.
Add the following new symbol:
[symbol IEC 60417-5041
Caution, hot surface
(2002-10)]
7.12 Replace the third paragraph of the addition by the following:
If symbols IEC 60417-5021 (2002-10) and IEC 60417-5041 (2002-10) are marked on the
appliance, their meaning shall be explained.
Add the following new text to the addition:
The instructions of steam cookers and steam-convection ovens shall include the substance
of the following warning:
WARNING: When opening the door of the cooking compartment hot steam can come out.
The instructions shall include the substance of the following:

© IEC 2017
These appliances are intended to be used for commercial applications, for example in
kitchens of restaurants, canteens, hospitals and in commercial enterprises such as bakeries,
butcheries, etc., but not for continuous mass production of food.
If the manufacturer wants to limit the use of the appliance to less than the above, this has to
be clearly stated in the instructions.
7.12.1 Add to the last sentence of the first paragraph “or a steam cleaner”.
Add the following new subclauses:
7.12.9 Not applicable.
7.14 Addition:
The height of the triangle used with symbol IEC 60417-5041 (2002-10) shall be at least
15 mm.
7.15 Replace the text of the addition by the following:
The marking specified for external accessible surfaces shall be visible when the appliance is
operated as in normal use, including when actuating any switch, adjusting any control or
opening a lid or door. It shall not be placed on a functional surface or adjacent surface.
Modification:
For fixed appliances, the marking of the name or trademark or identification mark of the
manufacturer or responsible vendor and the model or type reference shall be marked on the
appliance and, if not visible when the appliance is installed as in normal use, shall be included
in the instructions or on an additional label that can be fixed near the appliance after
installation.
NOTE 101 An example of such a fixed appliance is a built-in appliance.
11 Heating
Add the following new subclause:
11.3 Addition:
Where the external accessible surfaces are suitably flat and access permits, then the test
probe of Figure 104 is used to measure the temperature rises of external accessible
surfaces specified in Table 101. The probe is applied with a force of 4 N ± 1 N to the surface
in such a way that the best possible contact between the probe and the surface is ensured.
The measurement is performed after a contact period of 30 s.
The probe may be held in place using a laboratory stand clamp or similar device. Any
measuring instrument giving the same results as the probe may be used.
11.7 Add the following new text after Note 101 of the replacement:
Steady conditions are considered to exist 60 min after reaching the temperatures defined for
normal operation.
When an appliance is assembled in combination with, equipped with or incorporating
accessories or other appliances, the interaction shall be covered if they are provided to
operate simultaneously as stated by the manufacturer or by a common control.

– 6 – IEC 60335-2-42:2002/AMD2:2017
© IEC 2017
11.8 Add the following new text to the addition:
During the test, the temperature rises are monitored continuously and shall not exceed the
values shown in Table 3 and Table 101.
Table 101 – Maximum temperature rises for specified external accessible
surfaces under normal operating conditions
b
Temperature rise of external accessible surfaces
a K
Surface
Bare metal 48
c
Coated metal 59
Glass and ceramic 65
d, e
Plastic and plastic coating > 0,4 mm 74
a
Temperature rises are not measured on:
– the underside of appliances intended to be used on a working surface or floor;
– the rear surface of appliances;
– surfaces that are inaccessible to a 75 mm diameter probe having a hemispherical end;
– the area around a heated cavity door opening as shown in Figure 105;
– functional surfaces and adjacent surfaces.
b
The temperature rise on external accessible surfaces up to a distance of 100 mm from adjacent surfaces of
the appliance, (see Figure 103) may exceed the limits by up to 25 K, but the relevant part shall then be
marked with symbol IEC 60417-5041 (2002-10) or the equivalent text.
c
Metal is considered coated when a coating having a minimum thickness of 90 µm made by enamel or non-
substantially plastic coating is used.
d
The temperature rise limit of plastic also applies for plastic material having a metal finish of thickness less
than 0,1 mm.
e
When the thickness of the plastic coating does not exceed 0,4 mm, the temperature rise limits of coated metal
for underlying metal apply or the temperature rise limits for glass or ceramic material for underlying glass or
ceramic material apply.
13 Leakage current and electric strength at operating temperature
13.2 Replace the text of the modification by the following:
Instead of the permissible leakage current for stationary class I appliances, the following
applies:
– for cord and plug connected appliances 0,75 mA or 1 mA per kW rated power
input of the appliance with a maximum of
10 mA, whichever is higher.
– for other appliances 0,75 mA or 1 mA per kW rated power
input of the appliance with no maximum,
whichever is higher.
For portable class I appliances, instead of the permissible leakage current, the following
applies:
– for cord and plug connected appliances 0,75 mA or 1 mA per kW rated power
input of the appliance with a maximum of
10 mA, whichever is higher.
© IEC 2017
15 Moisture resistance
15.2 In the first paragraph of the test specification of the replacement, add “using a spillage
solution comprising water containing approximately 1 % NaCl and 0,6 % rinsing agent.
Add the following as a new second paragraph of the test specification of the replacement:
Any commercially available non-ionic rinsing agent may be used, but if there is any doubt with
regards to the test results, the rinsing agent shall have the following properties:
– viscosity
17 mPa⋅s
– pH 2,2 (1 % in water).
and its composition shall be:
Substance Parts by mass
%
15,0
Plurafac ® LF 221
Cumene sulfonate (40 % solution) 11,5
Citric acid (anhydrous) 3,0
Deionized water 70,5
In the existing fourth paragraph of the test specification, replace “cold water containing
approximately 1 % NaCl” by “the solution”.
In the existing fifth paragraph of the test specification, replace the third occurrence of “water”
by “the solution”.
In the existing eighth paragraph of the test specification, delete “(without salt)”.
15.3 Delete this subclause.
16 Leakage current and electric strength
16.2 Replace the text of the modification by the following:
Instead of the permissible leakage current for stationary class I appliances, the following
applies:
– for cord and plug connected appliances 0,75 mA or 1 mA per kW rated power
input of the appliance with a maximum of
10 mA, whichever is higher;
– for other appliances 0,75 mA or 1 mA per kW rated power
input of the appliance with no maximum,
whichever is higher.
For portable class I appliances, instead of the permissible leakage current, the following
applies:
– for cord and plug connected appliances 0,75 mA or 1 mA per kW rated power
input of the appliance with a maximum of
10 mA, whichever is higher.
___________
1 Plurafac ® LF 221 is the trade name of a product supplied by BASF. This information is given for the
convenience of users of this document and does not constitute an endorsement by IEC of this product.

– 8 – IEC 60335-2-42:2002/AMD2:2017
© IEC 2017
19 Abnormal operation
19.4 Delete this subclause.
20 Stability and mechanical hazards
20.2 Replace the text of the addition by the following:
The requirement concerning moving parts of the appliance does not apply to parts necessary
to implement the tilting operation such as handles or wheels.
22 Construction
22.102 Replace the requirement with the following:
Lights, switches or push-buttons for the indication of danger, alarm or similar situations shall
be coloured red.
22.106 Replace the requirement by the following:
Appliances intended to be connected to the water mains shall have means for safe collection
and/or drainage of water. The level to which manually filled water containers have to be filled
shall be so located as to be readily visible when filling and that no other hazardous situation
for the user could occur.
Add the following new subclause:
22.114 Void
22.116 Replace the test specification by the following:
Compliance is checked by inspection, by measurement of the dimensions after removal of
detachable parts and by manual test.
25 Supply connection and external flexible cords
25.3 Replace the first paragraph of the addition by the following:
Appliances with a mass greater than 40 kg, intended for permanent connection to fixed wiring
and not provided with rollers, castors or similar means shall be constructed so that the
connection can be done after the appliance has been installed in accordance with the
manufacturer's instructions.
28 Screws and connections
Replace the existing text by the following:
This clause of Part 1 is applicable except as follows.
28.1 Addition:
Screws made of carbon steel and alloy steel shall be made in accordance with ISO 898-1.
Screws made of corrosion-resistant stainless-steel shall be made in accordance with
ISO 3506-1, or ISO 3506-2, or ISO 3506-3, or ISO 3506-4.

© IEC 2017
28.4 Addition:
Screws that make mechanical connections and electrical connections shall be so designed
that the contact pressure does not change appreciably through loosening of the screwed
assembly parts during operational stress and contact corrosion.
Screws that make mechanical connections and provide earthing continuity shall be so
designed that the contact pressure does not change appreciably through loosening of the
screwed assembly parts due to operational stress and contact corrosion. They shall be
designed so that a minimum contact pressure remains.
Compliance is checked by inspection and by measuring the assembling torques for screwed
connections providing earthing continuity by applying a torque as specified in Table 102 to
turn the screw in the fastening direction. The screw shall not turn.
The screw shall not have been unfastened prior to performing this test.
Table 102 – Assembling torques for screwed connections
providing earthing continuity
Outer thread Assembling torque
diameter of the Nm
screw
Screwed connections for the mechanical Screwed connections for the mechanical
mm
strength of the screws A2-70 according to strength of the screws > 8.8 according to
ISO 3506-1, or ISO 3506-2, or ISO 3506-3, ISO 898-1
or ISO 3506-4 and 5.8 according to
ISO 898-1
>2,8 and ≤3,6 0,8 1,3
1,9 3,0
>3,6 and ≤4,2
3,7 6,0
>4,2 and ≤5,3
>5,3 and ≤6,3 6,5 10,0
M 8 15,0 25,0
M 10 31,0 50,0
30 Resistance to heat and fire
30.2.1 Replace the text of the modification with the following:
The glow-wire test is carried out at 650 °C. The glow-wire flammability index (GWFI)
according to IEC 60695-2-12 shall be at least 650 °C.
Figures
Add the following new figures:

– 10 – IEC 60335-2-42:2002/AMD2:2017
© IEC 2017
A B C
100 mm
100 mm
IEC
Key
A functional surface
B adjacent surface
C external accessible surface
Figure 103 – Identification of surfaces for temperature measurement

100 mm
© IEC 2017
B
A
E
D C
IEC
Key
A adhesive
B thermocouple wires 0,3 mm diameter to IEC 60584-1 Type K (chrome alumel)
C handle arrangement permitting a contact force of 4 N ± 1 N
D polycarbonate tube: inside diameter 3 mm, outside diameter 5 mm
E tinned copper disc: 5 mm diameter, 0,5 mm thick with flat contact face
Figure 104 – Probe for measuring surface temperatures
Dimensions in millimetres
TOP
Door
IEC
Figure 105 – Adjacent surfaces which are not measured
Annexes
Add the following new Annex P and Annex AA:
– 12 – IEC 60335-2-42:2002/AMD2:2017
© IEC 2017
Annex P
(informative)
Guidance for the application of this standard
to appliances used in tropical climates
13 Leakage current and electric strength at operating temperature
13.2 Modification:
Instead of the permissible leakage current for stationary class I appliances, the following
applies:
– for cord and plug connected appliances 0,5 mA or 0,5 mA per kW rated power
input of the appliance with a maximum
of 5 mA.
– for other appliances 0,5 mA or 0,5 mA per kW rated power
input of the appliance with no maximum.
For portable class I appliances instead of the permissible leakage current, the following
applies:
– for cord and plug connected appliances 0,5 mA or 0,5 mA per kW rated power
input of the appliance with a maximum of
5 mA, whichever is higher.
16 Leakage current and electric strength
16.2 Modification:
Instead of the permissible leakage current for stationary class I appliances, the following
applies:
– for cord and plug connected appliances 0,5 mA or 0,5 mA per kW rated power
input of the appliance with a maximum
of 5 mA.
– for other appliances 0,5 mA or 0,5 mA per kW rated power
input of the appliance with no maximum.
For portable class I appliances, instead of the permissible leakage current, the following
applies:
– for cord and plug connected appliances 0,5 mA or 0,5 mA per kW rated power
input of the appliance with a maximum of
5 mA, whichever is higher.
© IEC 2017
Annex AA
(informative)
Appliances intended to be used on board ships
The following modifications to this standard are applicable for appliances intended to be used
on board ships.
3 Terms and definitions
3.AA.101
open deck
area which is exposed to marine environment
3.AA.102
dayroom
area which may be exposed to marine environment from time to time
3.AA.103
protected environment
area which is never exposed to marine environment
6 Classification
6.2 Addition:
Appliances for open deck use shall be at least IPX6.
7 Marking and instructions
7.12 Addition:
The instructions for use shall also include the substance of the following:
– usage on board ships;
– installation place (open deck or dayrooms or protected environment);
– fastening means.
21 Mechanical strength
21.AA.101 Appliances shall withstand the pulses to which they may be subjected.
Compliance is checked by carrying out the half-sine pulse tests specified in IEC 60068-2-27
under the following conditions.
The appliance is fastened in its normal position of use to a shock-testing machine by means
of straps around the enclosure.
The type of pulse is a half-sine pulse and the severity is as follows.
– application of the half-sine pulse is in all 3 axes;
– peak acceleration: 100 m/s ,
– duration of each half-sine pulse: 6 ms;
– number of half-sine pulses in each direction: 500 ± 10.

– 14 – IEC 60335-2-42:2002/AMD2:2017
© IEC 2017
The appliance shall show no damage that c
...