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DRAFT IN WIDE
CIRCULATION
DOCUMENT DESPATCH ADVICE
Reference
Date
ET 32/T-137
30-07-2014
TECHNICAL COMMITTEE ETD 32
-------------------------------------------------------------------------------------------------------------ADDRESSED TO:
1.
2.
3.
All Members of Electrical Appliances Sectional Committee, ET 32;
All Members of Electrotechnical Division Council; and
All other Interested.
Dear Sir(s),
Please find enclosed a copy each of the following draft Indian Standard:
Doc No.
Title:
ETD 32(6775)
SAFETY OF HOUSEHOLD AND SIMILAR ELECTRICAL
APPLIANCES PART 2 PARTICULAR REQUIREMENTS,
SEC 75 COMMERCIAL DISPENSING APPLIANCES AND
VENDING MACHINES
Kindly examine the draft standard and forward your views stating any difficulties which you are likely
to experience in your business or profession, if these are finally adopted as Indian Standards.
Comments, if any, may please be made in the format given overleaf and mailed to the undersigned.
Last date for comments: 15-10 2014.
In case no comments are received or comments received are of editorial nature, you will kindly permit
us to presume your approval for the above document as finalized. However, in case of comments of
technical in nature are received then it may be finalized either in consultation with the Chairman,
Sectional Committee or referred to the Sectional Committee for further necessary action, if so de sired
by the Chairman, Sectional Committee.
Thanking you,
Yours faithfully
(Mahim Jain)
Sc ‘F’ & Head (Electrotechnical
Encl: As above
Electrical Appliances Sectional Committee, ET 32
FOREWORD
(Formal clause will be added later)
This standard covers the safety requirements of commercial dispensing appliances and vending
machines.
It has been assumed in the drafting of this standard that the execution of its provisions is
entrusted to appropriately qualified and experienced persons.
This standard recognizes the internationally accepted level of protection against hazards such
as electrical, mechanical, thermal, fire and radiation of appliances when operated as in normal
use taking into account the manufacturer's instructions. It also covers abnormal situations that
can be expected in practice and takes into account the way in which electromagnetic
phenomena can affect the safe operation of appliances.
This standard takes into account the requirements of IS 732 : 1989 ‘Code of practice for
Electrical Wiring Installations (third revision) as far as possible so that there is compatibility
with the wiring rules when the appliance is connected to the supply mains. However, in case
of any deviation, wiring rules take precedence.
If an appliance within the scope of this standard also incorporates functions that are covered
by another part 2 of IS 302, the relevant part 2 is applied to each function separately, as far as
is reasonable. If applicable, the influence of one function on the other is taken into account.
When a part 2 standard does not include additional requirements to cover hazards dealt with
in Part 1, Part 1 applies.
NOTE 1 This means that in such a case, it has been decided that for the part 2 standards that it is not necessary to
specify particular requirements for the appliance in question over and above the general requirements.
This standard is a product family standard dealing with the safety of appliances and takes
precedence over horizontal and generic standards covering the same subject.
NOTE 2 Horizontal and generic standards covering a hazard are not applicable since they have been taken into
consideration when developing the general and particular requirements for the IS 302 series of standards.
An appliance that complies with the text of this standard will not necessarily be considered to
comply with the safety principles of the standard if, when examined and tes ted, it is found to
have other features which impair the level of safety covered by these requirements.
An appliance employing materials or having forms of construction differing from those
detailed in the requirements of this standard may be examined and tested according to the
intent of the requirements and, if found to be substantially equivalent, may be considered to
comply with the standard.
This standard is to be read in conjunction with the latest edition of IS 302 -1 'Safety of
household and similar electrical appliances : Part 1 General Requirements' and its
amendments. This standard was prepared on the basis of IS 302 -1 : 2008.
NOTE 3
When “Part 1” is mentioned in this standard, it refers to IS 302 -1.
This part 2 supplements or modifies the corresponding clauses in IS 302-1, so as to convert
that standard into the Indian standard: Particular requirements for microwave ovens, including
combination microwave ovens.
When a particular subclause of Part 1 is not mentioned in this part 2, that subclause ap plies as
far as is reasonable. When this standard states "addition", "modification" or "replacement",
the relevant text in Part 1 is to be adapted accordingly.
NOTE 2
a)
b)
c)
The following numbering system is used:
subclauses, tables and figures that are numbered starting from 101 are additional to those in Part 1;
unless notes are in a new subclause or involve notes in Part 1, they are numbered starting from 101,
including those in a replaced clause or subclause;
additional annexes are lettered AA, BB, etc.
This standard is based on IEC 60335-2-75 : 2012 (Ed. 3.0). As this standard refers to IS 302 -1, the
differences of IS 302-1 from IEC 60335-1 would apply. Leakage current limits in this part have been
modified to align with those in IS 302-1.
DOC: ET 32(6775)
BUREAU OF INDIAN STANDARDS
DRAFT FOR COMMENTS ONLY
(Not to be reproduced without the permission of BIS or used as a STANDARD
SAFETY OF HOUSEHOLD AND SIMILAR
ELECTRICAL APPLIANCES –
PARTICULAR REQUIREMENTS,
SEC 3 COMMERCIAL DISPENSING APPLIANCES
AND VENDING MACHINES
Last date for comments is………….
1
SCOPE
This clause of Part 1 is replaced by the following.
This Indian Standard deals with the safety of electric commercial dispensing appliances and
vending machines for preparation or delivery of food, drinks and consumer products, their
rated voltage being not more than 250 V for single-phase appliances and 480 V for other
appliances.
NOTE 101
Examples of appliances that are within the scope of this standard are
a)
bulk tea or coffee brewing machines;
b)
cigarette vending machines;
c)
coffee grinders;
d)
commercial liquid heaters;
e)
coffee makers with or without integrated coffee grinder;
f)
coffee makers with cooling systems;
g)
hot and cold beverage vending machines;
h)
hot water dispensers;
i)
ice cream and whipped cream dispensers;
j)
ice dispensers;
k)
newspaper, audio or video tape or disc vending machines;
l)
packaged food and drink vending machines;
m)
refrigerated merchandisers.
Appliances can have more than one function.
NOTE 102
Other standards may be applicable for some functions such as
a)
refrigeration (IS 302-2-24);
b)
heating by microwaves (IS 302-2-25).
This standard also deals with the hygiene aspects of appliances.
As far as is practicable, this standard deals with the common hazards presented by appliances
that are encountered by users and maintenance persons. However, in general, it does not take
into account young children playing with the appliance.
NOTE 103
Attention is drawn to the fact that
a)
for appliances intended to be used in vehicles or on board ships or aircraft, additional requirements may be
necessary;
b)
in many countries, additional requirements for appliances incorporating pressure vessels are specified;
c)
in many countries, additional requirements are specified by the national health authorities, the na tional
authorities responsible for the protection of labour, the national water supply authorities and similar
authorities.
NOTE 104
2
This standard does not apply to
a)
appliances intended to be used exclusively for household purposes;
b)
appliances intended to be used exclusively for industrial purposes;
c)
appliances intended to be used in locations where special conditions prevail, such as the presence of a
corrosive or explosive atmosphere (dust, vapour or gas);
d)
commercial electric boiling pans;
e)
commercial electric bains-marie;
f)
amusement machines and personal service machines;
g)
appliances solely used for dispensing money;
h)
display cabinets;
i)
appliances incorporating electrode-type water heaters.
REFERENCES
This clause of Part 1 is applicable except as follows.
Addition:
IS 1401 : 2008 Protection of persons and equipment by enclosures - Probes for verification
IS 3400 (Part 6) : 2012 Methods of Test for Vulcanized Rubbers Part 6 Determination of the
Effect of Liquids
IS 12032 (Part 2) : 1987 Graphical Symbols for Diagrams in the Field of Electrotechnology:
Part 2 Symbols Elements, Qualifying Symbols and Other Symbols Having General
Application
IS/IEC 60320-1 : 2001 Appliance couplers for household and similar general purposes : Part 1
General requirements
IS/IEC 61058-1: 2000 Switches for appliances : Part 1 General requirements
3
TERMS AND DEFINITIONS
This clause of Part 1 is applicable except as follows.
3.1.9
Replacement:
normal operation
operation of the appliance under the following conditions:
The appliance is operated in the standby mode until steady conditions are established and then
under the most unfavourable dispensing procedure. The appliance is refilled when necessary
in accordance with the instructions for use, or the instructions for maintenance, and the next
operating period started as soon as possible.
Lids and covers of appliances of the professional type and of appliances of the supervised
type are placed in their intended positions.
Coffee makers are operated with their container filled with the rated capacity of water, or
connected to the water mains, if applicable. Coffee makers with a heated surface intended to
keep the liquid warm are operated with or without the container, whichever is the more
unfavourable.
3.6.2
Replacement:
detachable part
part that can be removed without the aid of a tool, a part that is removed in accordance with
the instructions for use or the instructions for maintenance, even if a tool or access key is
needed for removal, or a part that does not fulfill the test of 22.11.
Note 1 to entry: If a part has to be removed for installation purposes, this part is not considered to be detachable
even if the instructions state that it is to be removed.
Note 2 to entry:
3.7.3
A part that can be opened is considered to be a part that can be removed.
Replacement:
thermal cut-out
device that during abnormal operation limits the temperature of the controlled part by
automatically opening the circuit, or reducing the current, and is constructed so that its setting
cannot be altered by the user or the maintenance person
3.8.5
Replacement:
maintenance operation
operation performed in the maintenance area or user area, such as preparing the appliance for
new products or new operating methods, cleaning, price changing, replenishing, coin
collecting and setting of controls or similar operations
Note 1 to entry:
Maintenance operation does not include operations performed in the service area.
3.101
rated pressure
pressure assigned to the pressurized parts of the appliance by the manufacturer
3.102
standby mode
state of the appliance when filled as intended with ingredients or products, energized and
ready for use, cash boxes and overflow containers being empty
3.103
access key
key or other means that gives access to the maintenance area but do es not give access to the
service area
Note 1 to entry: "Other means" includes a tool or operation by codes or signals produced by optical or electro magnetic sources.
3.104
override key
key or other means that is used to render an interlock inoperative
3.105
dispensing appliance
appliance intended to deliver or make available food, drinks or other consumer products
Note 1 to entry:
The appliance may also prepare the products.
Note 2 to entry:
The dispensing operation may be initiated manually or by means s uch as coins or credit cards.
3.106
vending machine
dispensing appliance that is operated by coins, credit cards or other means of payment
3.107
instructions for maintenance
instructions explaining how to carry out cleaning, replenishing, coin collecting, setting of
controls and similar operations
3.108
maintenance person
person who maintains the appliance in accordance with the instructions for maintenance
3.109
user area
area where access is gained without the use of an access key or a tool
Note 1 to entry: The user area of appliances of the supervised type is determined with detachable parts and other
movable parts, such as doors and lids, in position as in normal use.
Note 2 to entry:
Appliances of the professional type have no user area.
3.110
maintenance area
area where access can only be gained by the use of an access key
3.111
service area
area where access cannot be gained by the use of an access key alone
3.112
appliance of the professional type
dispensing appliance that is only intended to be used by trained personnel such as kitchen or
bar staff
3.113
appliance of the supervised type
dispensing appliance that is intended to be maintained by trained personnel but may be used
by other persons in a location where its use is overseen
Note 1 to entry:
Dining rooms in restaurants are examples of such locations.
3.114
potentially hazardous food
food which includes natural or synthetic ingredients that are capable of supporting rapid and
progressive growth of pathogenic or toxin producing micro-organisms
Note 1 to entry: Examples of potentially hazardous food are milk, eggs, meat, poultry, shellfish, crustaceans, and
their products, either raw or heat treated, as well as food of plant origin that is ready for consumption without the
need for any further preparation or processing.
Note 2 to entry: Food may become potentially hazardous food during processing, for example when powdered
ingredients are mixed with water or when food is stored at incorrect temperature.
Note 3 to entry:
Potentially hazardous food does not include:
a)
candy, nuts, gum and similar confectionery;
b)
cookies, crackers and similar bakery products;
c)
instant-coffee, chocolate, cocoa and sugar;
d)
food having a pH level of not greater than 4.6 or a water activity (Aw) value not greater than 0.85 a t 25
°C;
e)
food maintained at a temperature not exceeding 5 °C for periods specified by the producer, but for not
more than 5 days;
f)
food maintained at a temperatures above 65 °C or below –18 °C;
g)
food in hermetically sealed containers;
h)
food that has been processed to prevent spoilage.
3.115
espresso coffee maker
coffee maker in which water is heated and forced through the ground coffee by steam pressure
or by means of a pump.
Note 1 to entry:
4
Espresso coffee makers can have an outlet for supplying steam o r hot water.
GENERAL REQUIREMENT
This clause of Part 1 is applicable.
5
GENERAL CONDITIONS FOR THE TESTS
This clause of Part 1 is applicable except as follows.
5.2
Addition:
If the test of 15.102 has to be carried out, three additional samples are required.
5.6
Replacement:
Controls or switching devices in the user area are adjusted to the most unfavourable setting.
Controls, switching devices or other parts in the maintenance area are adjusted to the most
unfavourable setting within limits stated in the instructions for maintenance. Controls or switching
devices in the service area are not adjusted.
5.9
Addition:
When alternative software is made available by the appliance manufacturer, the appliance is
tested with the software that gives the most unfavourable results.
5.10
Addition:
NOTE 101
Access keys and override keys can be supplied separately from the appliance.
Appliances are installed in accordance with the instructions provided with the appliance
before testing.
If the instructions state that the appliance may be installed together with other appliances, the
effect of this combination is taken into account.
5.101 Appliances intended to be connected to the water mains are supplied with water
having a temperature of 15 °C  5 °C and the most unfavourable pressure specified in the
instructions. For appliances that are manually filled with water, the temperature of the water
is 15 °C  5 °C.
For appliances intended to cool water, the temperature of the water is 25 °C  5 °C.
5.102 The requirements of this standard for the maintenance area are applicable when the
instructions for maintenance are being followed. If an access key is provided for access to the
maintenance area, it is used before a test is carried out if this is more unfavourable.
5.103 When reference is made to the application of test probe B, test probe 18 of IS 1401 is
also applied in the user area.
5.104 Appliances of the professional type and appliances of the supervised type are tested as
heating appliances even if they incorporate a motor. If these appliances do not contain heating
elements, they are tested as motor-operated appliances.
6
CLASSIFICATION
This clause of Part 1 is applicable except as follows.
6.1
Modification:
Appliances shall be class I, class II or class III.
6.2
Addition:
Appliances intended for outdoor use shall be at least IPX4.
Appliances that may be cleaned by water jets, or installed where water jets are liable to be
used, shall be at least IPX5.
7
MARKING AND INSTRUCTIONS
This clause of Part 1 is applicable except as follows.
7.1
Addition:
Appliance shall be marked with
–
their rated pressure, in megapascals, if applicable;
–
the maximum permissible water pressure, in megapascals, for appliances intended to be
connected to the water mains.
Appliances intended to be filled by hand shall have means that indicate when the required
level for correct operation has been reached.
NOTE 101
A level mark or an audible or visual signal are suitable means.
For appliances incorporating a socket outlet, the voltage, nature of the supply and current or
power output shall be marked in the vicinity of the socket outlet.
Appliances intended to be partially immersed in water for cleaning shall be marked with the
maximum level of immersion and with the substance of the following:
Do not immerse beyond this level.
7.3
Addition:
The requirement also applies when the adjustment has to be made by the maintenance person.
7.8
Addition:
Terminals for equipotential bonding shall be indicated by symbol 02-15-05 of IS 12032 (Part
2):
This symbol shall not be placed on screws, removable washers or other parts that can be
removed when conductors are being connected.
7.12.1
Addition:
The installation instructions for appliances intended to be connected to the water mains shall
specify the means of connection and draw attention to any national rules that may be
applicable.
The installation instructions shall state if the appliance is suitable for outdoor use.
The installation instructions shall state the maximum and minimum ambient temperatures for
correct operation.
For appliances that are not at least IPX5, the instructions shall state that the appliance is no t
suitable for installation in an area where a water jet could be used.
The installation instructions shall state the maximum tilt of the appliance for safe operation. A
tilt of less than 2° need not be stated. An instruction such as "the appliance has to be placed in
a horizontal position" is sufficient.
The installation instructions for appliances of the professional type shall state that the
appliance is only to be installed in locations where its use and maintenance is restricted to
trained personnel.
The installation instructions for appliances of the supervised type shall state that the appliance
is only to be installed in locations where it can be overseen by trained personnel.
The installation instructions for class I appliances of the professional type that are intended to
be permanently connected to fixed wiring, and have a leakage current that may exceed 10 mA,
shall state that the installation of a residual current device (RCD) having a rated residual
operating current not exceeding 30 mA is advisable.
7.12.101 If it is necessary to take special precautions during maintenance operations, details
of these shall be supplied. The instructions for maintenance shall state how to gain access to
the maintenance area including how to use the access key and the override key. They shall not
include instructions on how to gain access to a service area.
Compliance is checked by inspection.
7.12.101.1 The instructions for maintenance shall specify the method and frequency of
cleaning. They shall include details for descaling, disinfecting, flushing and removal of any
residual cleaners, sterilizers or descalers from the appliance, if applicable. Recommended
cleaning or disinfecting agents shall be specified, and they may be identified by their
chemical denomination.
If the appliance is not at least IPX5, the instructions for maintenance shall state that the
appliance must not be cleaned by a water jet.
The instructions for maintenance for appliances incorporating an appliance inlet, and intended
to be partially or completely immersed in water for cleaning, shall state that the connector
must be removed before the appliance is cleaned and that the appliance inlet must be dried
before the appliance is used again.
Compliance is checked by inspection.
7.12.101.2 If the use of an override key allows access to moving parts, a suitable warning
shall be given in the instructions for maintenance.
Compliance is checked by inspection.
7.12.101.3 The instructions for maintenance shall list any accessories that may be used wit h
the appliance.
Compliance is checked by inspection.
7.12.101.4 The instructions for maintenance shall state the maximum and minimum ambient
temperatures for correct operation.
For appliances using water, the instructions for maintenance shall give details concerning the
prevention of freezing or how to ensure safe operation if freezing occurs.
Compliance is checked by inspection.
7.12.101.5 The instructions for maintenance for appliances containing pressurized gas shall
give details on the safe handling of the pressurized containers and of the gas.
Compliance is checked by inspection.
7.12.101.6 The instructions for maintenance shall specify the types of food for which the
appliance is suitable, and give details on how to ensure hygienic op eration.
Compliance is checked by inspection.
7.12.101.7 The instructions for maintenance for appliances intended for dispensing
potentially hazardous food, when the safety of the food depends upon the temperature and
duration of storage, shall include details for the safe handling of the food.
Compliance is checked by inspection.
7.12.102 The instructions shall state that access to the service area is restricted to persons
having knowledge and practical experience of the appliance, in particular as far as safety and
hygiene are concerned.
Compliance is checked by inspection.
8
PROTECTION AGAINST ACCESS TO LIVE PARTS
This clause of Part 1 is applicable.
9
STARTING OF MOTOR-OPERATED APPLIANCES
This clause of Part 1 is not applicable.
10 POWER INPUT AND CURRENT
This clause of Part 1 is applicable.
11 HEATING
This clause of Part 1 is applicable except as follows.
11.2
Modification:
Appliances normally fixed to the floor, and those having a mass greater than 40 kg and not
provided with casters or rollers, are installed in accordance with the instructions. If no
instructions are provided, the appliance is placed on the floor as close to the walls as possible.
Other appliances, except fixed appliances, are placed on the floor as near to the walls as
possible.
11.4
Addition:
Heating appliances with electronic circuits
combined appliances.
controlling the power input are operated as
If the temperature rise limits are exceeded in appliances incorporating motors, transformers or
electronic circuits, and if the power input is lower than the rated power input, the test is
repeated with the appliance supplied at 1.06 times the rated voltage.
11.6
Addition:
Combined appliances without electronic power controls are operated as heating appliances.
11.7
Replacement:
The appliance is operated under normal operation until steady conditions are established, the
appliance being refilled when necessary.
NOTE 101
11.8
Refilling can require the use of an access key.
Addition:
The temperature rise of the surfaces in the user area shall not exceed the limits specified for handles,
knobs, grips and similar parts that are held for short periods only. This does not apply to the surface of
parts that need to be hot in order for the appliance to fulfil its function.
The temperature rise limits of motors, transformers and components of electronic circuits,
including parts directly influenced by them, may be exceeded when the appliance is operated
at 1.15 times the rated power input.
11.101 Appliances incorporating refrigerating equipment, and having motor-compressors,
are also tested at an ambient temperature of
a) 32 °C, for appliances for temperate countries;
b) 43 °C, for appliances for tropical countries.
Other parts of the appliance are operated to produce the most unfavourable conditions in the
refrigerating system.
Temperature rises of parts of the appliance, other than the motor -compressor, are not
determined.
The temperature of windings and the enclosure of motor-compressors shall not exceed the
following values:
a)
140 °C, for windings of motorcompressors with synthetic insulation;
b)
130 °C, for windings of motorcompressors with cellulosic insulation;
c)
150 °C, for external enclosures of
motor-compressors.
12 VOID
13 LEAKAGE CURRENT AND ELECTRIC STRENGTH AT OPERATING
TEMPERATURE
This clause of Part 1 is applicable except as follows.
13.2
Modification:
For stationary class I heating appliances, the leakage current shall not exceed the following
values:
–
for appliances of the professional type
intended to be permanently connected to fixed
wiring;
–
for other appliances of the professional type
–
for other heating appliances
14 TRANSIENT OVERVOLTAGES
This clause of Part 1 is applicable.
1 mA per kW rated power input of the
appliance, with no maximum;
1 mA per kW rated power input of the
appliance, with a maximum of 10 mA;
0.21 mA or 0.21 mA per kW rated power
input of the appliance, whichever is higher
with a maximum of 1.5 mA.
15 MOISTURE RESISTANCE
This clause of Part 1 is applicable except as follows.
15.1.1
Addition:
Appliances of the professional type classified IPX3 or lower, and intended to be placed on a
kitchen floor, are subjected to a test in which water under pressure is indirectly splashed onto
the appliance. The splash apparatus is shown in Figure 101. The bowl is placed on the floor
and the water pressure adjusted so that the water splashes to a height of 150 mm above the
bottom of the bowl. The apparatus is moved around the appliance in order to splash it from all
directions for a total of 5 min.
15.2
Replacement:
Appliances subject to spillage of liquids or solids in normal use shall be constructed so that
spillage does not affect their electrical insulation. The electrical insulation shall not be
affected by cleaning, disinfecting, descaling and similar operations.
Compliance is checked by the tests of 15.2.101 to 15.2.113.
Water used for the tests shall contain approximately 1 % NaCl.
Appliances with type X attachment, except those having a specially prepared cord, are fitted
with the lightest permissible type of flexible cord of the smallest cross -sectional area
specified in Table 11.
Appliances incorporating an appliance inlet are tested with or without an appropriate
connector in position, whichever is more unfavourable.
Before each test, the appliance is operated in the standby mode. Containers that are connected
to the water mains are prefilled with saline solution.
After each overfilling or application of liquid, the appliance shall withstand the electric
strength test of 16.3 and inspection shall show that there is no trace of liquid or solids on
insulation that could result in a reduction of clearances and creepage distances below the
values specified in Clause 29. All residues are then removed and the appliance is dried.
Detachable parts in the user area are removed or placed in the most unfavou rable position.
Detachable parts in the maintenance area are placed in their normal position following a
maintenance operation.
15.2.101 Containers for ingredients or products in powdered or granulated form are filled
with dry granulated sugar, ignoring any level indication. A further quantity equal to 15 % of
the total capacity of the container is then poured in steadily over a period of 1 min.
Containers that are intended to be filled outside the appliance are replaced without removing
any excess sugar from the outside of the container. Lids are replaced after overfilling.
15.2.102 Liquid containers that are filled manually are filled with saline solution and a
further quantity equal to 15 % of the total capacity of each container or 0.25 l, whichever is
the greater, is poured in steadily over a period of 1 min.
15.2.103 The outlets of liquid mixing containers are blocked and the containers are filled
with saline solution. A further quantity equal to 15 % of the total capacity of each container
or 0.25 l, whichever is the greater, is poured in steadily over a period of 15 s. If the container
has more than one independent outlet, they are blocked in turn.
15.2.104 Drains for liquid waste containers are blocked and the containers are filled with saline
solution. A further quantity equal to 15 % of the total capacity of each container or 0.25 l, whichever
is the greater, is poured in steadily over a period of 15 s. If the container has more than one
independent drain, they are blocked in turn. If there is more than one container, they are tested in turn.
15.2.105 Drain taps of containers used during maintenance operations are adjusted in turn to
the most unfavourable position. The appliance is supplied at rated voltage and operated under
normal operation until the flow of saline solution stabilizes.
15.2.106 Failure of the inlet valve of appliances connected to the water mains is simulated. Water is
allowed to flow for 1 min after the first evidence of overflow unless the inflow stops automatically.
The failure of only one device is tested at a time.
15.2.107 Appliances dispensing liquid into a serving container, such as a cup or jug, are
tested by rapidly pouring 0.5 l of saline solution over the surface where the container is filled,
transported and removed by the user.
15.2.108 Appliances with accessible openings, including slots for coins or cards, other than
appliances of the professional type and appliances of the supervised type, are tested by slowly
pouring 0.25 l of saline solution into each opening. If the opening is in a vertical surface, the
solution is projected towards the opening.
15.2.109 Appliances having external surfaces on which it is possible to place a vessel, such
as a cup or jug, are tested by rapidly pouring 0.5 l of saline solution over th e surface. The
quantity of saline solution is increased to 5 l for appliances of the professional type if their
highest surface is lower than 1.5 m. The test is carried out even if the appliance does not
dispense liquid. If there is more than one surface, they are tested in turn.
For espresso coffee maker of the professional type, the amount of water is increased to 5 l
only if the highest surface after installation is lower than 1.2 m.
15.2.110 Appliances delivering prepacked products are tested to simulat e leakage from the
package over any area where the package is stored or transported.
Leakage from liquid products is simulated by rapidly pouring a quantity of saline solution,
equal in volume to the largest prepacked product that can be delivered from the appliance,
over the area.
Leakage from dry products is simulated by rapidly pouring a quantity of dry granulated sugar,
equal in volume to the largest prepacked product that can be delivered from the appliance,
over the area. This test is not applicable to appliances intended to deliver only solid products
such as newspapers, films or cigarettes.
15.2.111
Maintenance operations involving the use of liquids are carried out three times.
15.2.112 Parts liable to be cleaned are wiped with a sponge, having dimensions
approximately 150 mm × 75 mm × 50 mm, saturated with saline solution. The sponge is
applied without appreciable force for approximately 10 s to each surface. This test is not
applied to surfaces in the maintenance area for which cleaning instructions are given.
15.2.113 Appliances subject to descaling are descaled 10 times in accordance with the
instructions for maintenance. The appliance is then operated in the standby mode.
15.3
Addition:
If it is not possible to place the appliance in the humidity cabinet, electrical parts are tested separately.
15.101 Appliances having a tap that provides water for filling or cleaning shall be
constructed so that the water cannot come into contact with live parts or affect electrical
insulation.
Compliance is checked by the following test.
The appliance is connected to the water mains, the pressure being adjusted to the maximum
water pressure marked on the appliance. Tiltable and movable parts, including lids, are placed
in the most unfavourable position. The tap is fully opened for 1 min, swivel outlets being
adjusted to direct the water in the most unfavourable direction. The appliance shall then
withstand the electric strength test of 16.3.
15.102 Appliances intended to be partially or completely immersed in water for cleaning
shall have adequate protection against the effects of immersion.
Compliance is checked by the following tests, which are carried out on three additional
appliances.
The appliances are operated under normal operation at 1.15 times rated power input, until the
thermostat operates for the first time. Appliances without a thermostat are operated until
steady conditions are established. The appliances are disconnected from the supply, any
appliance connector being withdrawn. They are then completely immersed in water containing
approximately 1 % NaCl and having a temperature between 10 °C and 25 °C, unless they are
marked with the maximum level of immersion, in which case they are immersed 50 mm
deeper than this level.
After 1 h, the appliances are removed from the saline solution, dried and subjected to the
leakage current test of 16.2.
This test is carried out four more times, after which the appliances shall withstand the electric
strength test of 16.3, the voltage being as specified in Table 4.
The appliance having the highest leakage current after the fifth immersion is dismantled and
inspection shall show that there is no trace of liquid on insulation that could result in a
reduction of clearances and creepage distances below the values specified in Clause 29.
The remaining two appliances are operated under normal operation at 1.15 times rated power
input for 240 h. After this period, the appliances are disconnected from the supply and
immersed again for 1 h. They are then dried and subjected to the electric strength test of 16.3,
the voltage being as specified in Table 4.
Inspection shall show that there is no trace of liquid on insulation that could result in a
reduction of clearances and creepage distances below the values specified in Clause 29.
16 LEAKAGE CURRENT AND ELECTRIC STRENGTH
This clause of Part 1 is applicable except as follows.
16.2
Modification:
For stationary class I heating appliances, the leakage current shall not exceed the following
values:
–
for appliances of the professional type
intended to be permanently connected to fixed
wiring;
–
for other appliances of the professional type
–
for other heating appliances
2 mA per kW rated power input of the
appliance, with no maximum;
2 mA per kW rated power input of the
appliance, with a maximum of 10 mA;
0.21 mA or 0.21 mA per kW rated power
input of the appliance, whichever is higher
with a maximum of 1.5 mA.
17 OVERLOAD PROTECTION OF TRANSFORMERS AND ASSOCIATED
CIRCUITS
This clause of Part 1 is applicable.
18 ENDURANCE
This clause of Part 1 is not applicable.
19 ABNORMAL OPERATION
This clause of Part 1 is applicable except as follows.
19.1
Addition:
Appliances are also subjected to the tests of 19.101 and 19.102, if applicable.
Detachable parts in the user area are removed or placed in the most unfavourable position.
Detachable parts in the maintenance area are placed in their normal position following a
maintenance operation.
Containers are filled to the most unfavourable level.
Appliances having a control that limits the pressure during the tests of Clause 11 are subjected
to the tests of 19.4 with this control rendered inoperative.
19.2
Addition:
NOTE 101
Examples of achieving restricted heat dissipation are
a) operating without water;
b) switching off the fan;
c) covering ventilation openings.
19.4
Addition:
If a control also performs other functions, only the part controlling the temperature or pressure is
rendered inoperative.
19.11.2
Modification:
The fault conditions are simulated until steady conditions are established.
19.13
Addition:
During the tests, molten plastic shall not be emitted.
Liquid having a temperature above 80 °C, steam or solid objects shall not be emitted from
unexpected places in a way likely to cause injury to persons.
After the tests, compliance with 15.1 and 15.2 shall not be impaired. The electric strength test
of 16.3 shall be carried out after each test if it is expected that the electrical insulation could
be affected.
19.101 The appliance is supplied at rated voltage and operated under normal operation. Any
fault condition or unexpected operation likely to occur during use of the appliance is
introduced.
If operation without water in the appliance is considered to be a more unfavourable condition,
the tests are carried out with the water supply valve closed. The water supply valve is not
closed during the dispensing operation.
NOTE 1
Damaged components or parts can be replaced after each test.
NOTE 2
Examples of fault conditions or unexpected operation are
a) defects in the appliance:
i)
ii)
a programmer stopping in any position;
disconnection and reconnection of one or more phases of the supply mains during any part of the
programme;
iii)
open-circuiting or short-circuiting of components;
iv)
locking the main contacts of a contactor in the “on” position if they are used for energizing heating
elements. However, this defect is not introduced if at least two independent sets of contacts are
provided. This can be achieved by two contactors operating independently of each other or by one
contactor having two independent armatures operating two independent sets of main contacts;
v)
vi)
vii)
failure of a magnetic valve;
failure of a pneumatic or hydraulic control;
blocking the coin or product channels. If blockage can be noticed from the outsi de of the appliance,
further delivery is not attempted, otherwise the appliance is operated until no further delivery is
possible. The wrapping of products in conductive materials has to be taken into account;
b) faulty operation by users or maintenance persons:
i)
ii)
incorrect actuation of knobs, handles, switches or push -buttons;
interrupting the dispensing operation by available facilities;
iii)
incorrect opening or closing of doors or lids;
iv)
improper application of the instructions for maintenance;
v)
vi)
vii)
viii)
incorrect routine cleaning. The sponge test of 15.2.112 is applied to all surfaces in the user area. It
is also applied to all surfaces in the maintenance area, except those for which cleaning instructions
are given;
setting controls, switches or programmers in the most unfavourable position;
incorrect loading;
incorrect coin collection;
c) abuse by users:
i)
ii)
obstructing dispensing openings;
blocking moving parts.
NOTE 3
results.
In general, tests are limited to the fault conditions that may be expected to give the most unfavourable
19.102 Appliances incorporating a thermal cut-out of the capillary type are tested as
specified in 19.4 but with the capillary tube ruptured.
20 STABILITY AND MECHANICAL HAZARDS
This clause of Part 1 is applicable except as follows.
20.1 Modification:
The appliance is tested with doors, lids and similar parts in the maintenance area placed in the
normal position of use.
The test with the appliance tilted to 15° is not carried out.
Addition:
The test is repeated with doors, lids and similar parts in t he maintenance area placed in the
most unfavourable position, however, the appliance is only tilted to an angle of 5°.
20.2 Addition:
Covers over moving parts having a kinetic energy exceeding 4 J shall be interlocked so that it
is only possible to remove them when the parts are stationary unless they are only removable
with the aid of a tool.
21 MECHANICAL STRENGTH
This clause of Part 1 is applicable except as follows.
21.1 Addition:
The impact energy of 0.5 J is applied in the maintenance area. In the user a rea, the value of
the impact energy is 1.0 J.
22 CONSTRUCTION
This clause of Part 1 is applicable except as follows.
22.6
Addition:
Parts that withstand the aging test of Annex AA are not considered to be parts where leakage could
occur.
Drain holes in coffee makers shall be at least 5 mm in diameter or 20 mm² in area with a
width of at least 3 mm.
Compliance is checked by measurement.
22.7
Addition:
Pressure relief devices shall be constructed so that they cannot be rendered inoperative or set
to a higher pressure without the aid of a tool that is normally only available to the
manufacturer.
Appliances incorporating pressurized systems are subjected to the following test.
All pressure regulating devices are rendered inoperative and the system is filled with wa ter.
The pressure is then raised hydraulically until the pressure relief device operates.
The pressure shall not exceed 1.2 times the rated pressure and the appliance shall be fit for
further use. The pressure relief device is then rendered inoperative an d the pressure again
raised until twice the rated pressure is attained. The pressure is maintained at this value for 5
min.
The system shall not rupture and there shall be no permanent deformation. However, an
intentionally weak part may rupture after the pressure has attained 1.5 times the rated pressure
as long as it does not give rise to a hazard. In this case, the weak part is replaced and the test
repeated. Rupture shall occur in the same way.
If fluid cannot circulate freely throughout the pressurized system, separate tests can be carried
out on individual parts of the system.
If more than one pressure relief device operates on the same part of the system, they are
rendered inoperative together.
This test is not made on refrigerating systems.
The appliance shall then withstand the electric strength test of 16.3.
22.14
Addition:
The requirement also applies in the maintenance area to parts liable to be touched during
maintenance operations.
22.33
Addition:
Ingredients and products shall not be in direct contact with live parts or, for class II
construction, with basic insulation.
22.47
Addition:
All pressure regulating devices are rendered inoperative.
22.101 Appliances shall be constructed so that interlocks cannot be rendered inoperative
without using an override key if they are necessary for compliance with the standard.
Compliance is checked by inspection, by manual test and by applying test probe B of IS 1401.
22.102 It shall not be possible to gain access to the service area by only using the access key
for the maintenance area.
Compliance is checked by inspection and by manual test.
22.103 Appliances shall be constructed so that scalding by steam is prevented when a lid is
opened.
Compliance is checked by inspection and by the tests of Clause 19.
22.104 Appliances shall be constructed so that dispensed products cannot be contaminated
by substances such as lubricants and debris.
Compliance is checked by inspection.
22.105 Appliances shall be constructed so that it is not possible to inadvertently open draw off taps and drain valves or withdraw drain plugs.
Compliance is checked by inspection and by manual test.
Valves that return automatically to the closed position when released, those of the wheel type
or those placed in a recess are considered to comply with this requirement.
22.106 Coin boxes and containers for other payment means shall be positioned or protec ted
so that overfilling cannot cause a hazard.
Compliance is checked by inspection.
22.107 Appliances intended to be connected to the water mains shall be constructed for a
water pressure not less than 0.6 MPa.
Compliance is checked by inspection.
22.108 Appliances shall be protected in such a manner that moisture, grease and products
used in the appliance will not accumulate so that clearance and creepage distances are
affected.
Compliance is checked by inspection.
22.109
Lights indicating a warning against a hazard shall only be coloured red.
Compliance is checked by inspection.
22.110 Appliances having pressurized containers shall be constructed so that the lid cannot
be removed while the pressure within the container is excessive. They shall incorp orate a
means to release the pressure to a value such that the lid can be removed without risk.
Compliance is checked by the following test.
The appliance is operated as specified in Clause 11 until the pressure regulator operates for
the first time.
The appliance is then disconnected from the supply and the pressure allowed to decrease until
the pressure is 4 kPa. A force of 100 N is applied to the most unfavourable point where the lid
or its handle can be gripped. It shall not be possible to remove the li d.
The internal pressure is then gradually reduced, the force of 100 N being maintained. There
shall be no hazardous displacement of the lid when it is released.
This test is not carried out on appliances when the lid is secured by screw clamps or other
devices that ensure that the pressure is automatically reduced in a controlled manner before
the lid can be removed.
22.111 Appliances for dispensing potentially hazardous food shall incorporate means to
prevent the dispensing of the food if it has been adversely affected by storage or process
temperatures. This requirement does not apply to coffee makers of the professional type and
coffee makers of the supervised type.
Compliance is checked by inspection.
22.112 Surfaces of food areas and splash areas shall be cleanable so that all unwanted matter
can be removed. If necessary, food areas shall be capable of being disinfected.
The food area comprises surfaces in contact with the food and surfaces that the food may contact
during preparation of the product. The splash area comprises surfaces on which part of the food may
splash or flow during normal use but this food does not become part of the product.
Compliance is checked by inspection after having operated the appliance as in normal use and
then cleaning and disinfecting it in accordance with the instructions for maintenance.
22.113 Non-food areas that are not adequately separated from food areas of appliances that
dispense food shall be constructed so that the retention of moisture or unwanted matter, and
the ingress of vermin, is prevented. When this is unavoidable, the surfaces of the non -food
areas shall be cleanable in accordance with 22.112.
This requirement does not apply to splash areas and appliances that dispense food in sealed containers
such as cans and bottles.
Compliance is checked by inspection.
22.114 An espresso coffee maker shall be constructed so that it is not possible to remove the
coffee filter by a simple operation while there is a hazardous pressure within the container.
This requirement is considered to be met if the coffee filter can only be removed after it has been
rotated through an angle of at least 30°.
Compliance is checked by inspection and by manual test.
23 INTERNAL WIRING
This clause of Part 1 is applicable except as follows.
23.3
Modification:
The requirement also applies to maintenance operations.
The number of flexings is
a) 200 000, for conductors flexed during normal use;
b) 10 000, for conductors flexed during maintenance operations.
23.101 Anchorages for internal wiring that can easily be replaced shall be constructed and
located so that
a) the wiring cannot touch the clamping screws of the anchorage if these screws are
accessible, unless they are separated from accessible metal parts by supplementary
insulation;
b) the wiring is not clamped by a metal screw that bears directly on the wiring;
c) for class I appliances, the anchorages are of insulating material or are provided with
an insulating lining, unless failure of the insulation of the wiring does not make
accessible metal parts live;
d) for class II appliances, the anchorages are of insulating material, or if of metal, they
are insulated from accessible metal parts by supplementary insulation.
Compliance is checked by inspection.
23.102 Internal wiring that is accessible in the maintenance area and is moved during
normal operation shall comply with 25.13, 25.14, 25.15 and 25.21.
Compliance is checked by the relevant tests.
24 COMPONENTS
This clause of Part 1 is applicable except as follows.
24.1.5
Addition:
For appliance couplers incorporating thermostats, thermal cut-outs or fuses in the connector,
IS/IEC 60320-1 is applicable except that
a) the earthing contact of the connector is allowed to be accessible, provided that this
contact is not likely to be gripped during insertion or withdrawal of the connector;
b) the temperature required for the test of Clause 18 is that measured on the pins of the
appliance inlet during the heating test of Clause 11 of this standard;
c) the breaking-capacity test of Clause 19 is carried out using the inlet of the appliance;
d) the temperature rise of current-carrying parts specified in Clause 21 is not determined.
Thermal controls are not allowed in connectors complying with the standard sheets of IS/IEC 60320-1.
24.2
Modification:
Switches and automatic controls operating at safety extra-low voltage may be fitted in
interconnection cords in the maintenance area.
24.101 Connecting devices of interconnection cords shall be identified if they are
interchangeable with other connecting means in the appliance, if this c ould result in a hazard.
NOTE
Colour coding can be used for identification.
Compliance is checked by inspection.
24.102 Interlock switches shall comply with IS/IEC 61058-1 as far as is reasonable and shall
ensure all-pole disconnection. However, single-pole disconnection is allowed for protection
against mechanical hazards.
Compliance is checked by testing the switch in accordance with the relevant clauses of IS/IEC
61058-1, the number of cycles of operation for the test of Clause 17 being 10 000. However,
if the switch is operated once per delivery, the number of cycles of operation is 100 000. This
requirement only applies to interlock switches necessary for compliance with this standard.
24.103 Thermal cut-outs incorporated for compliance with Clause 19 shall not be selfresetting. They shall have a trip-free mechanism if they disconnect heating elements and if
they disconnect motors, the unexpected starting of which may cause a hazard to the user or
maintenance person.
Compliance is checked by inspection and by manual test.
25 SUPPLY CONNECTION AND EXTERNAL FLEXIBLE CORDS
This clause of Part 1 is applicable as follows.
25.7
Addition:
Supply cords of appliances intended for outdoor use shall be polychloroprene sheathed and
not be lighter than ordinary polychloroprene sheathed cord.
25.15
Addition:
When the test is carried out on internal wiring, the pull force is 30 N and the torque 0.1 Nm,
irrespective of the mass of the appliance.
For internal wiring, a push force of 30 N is applied when pushing t he wiring into the
appliance.
26 TERMINALS FOR EXTERNAL CONDUCTORS
This clause of Part 1 is applicable.
27 PROVISION FOR EARTHING
This clause of Part 1 is applicable except as follows.
27.2
Addition:
Stationary class I appliances of the professional type intended to be installed in kitchens shall
incorporate a terminal for the connection of an external equipotential bonding conductor. This
terminal shall be connected to all accessible metal parts of the appliance and shall allow the
connection of a conductor having a nominal cross-sectional area of 2.5 mm 2 to 10 mm2 . It
shall be located so that the conductor can be connected after installation of the appliance. This
requirement does not apply to small parts such as nameplates.
28 SCREWS AND CONNECTIONS
This clause of Part 1 is applicable except as follows.
28.1
Addition:
The requirement also applies to screws that may be removed during maintenance operations.
The test also applies to screws likely to be tightened during maintenance operations.
28.3
Addition:
The requirement also applies to screws operated by the maintenance person.
29 CLEARANCES, CREEPAGE DISTANCES AND SOLID INSULATION
This clause of Part 1 is applicable except as follows.
29.2 Addition:
The microenvironment is pollution degree 3 unless the insulation is enclosed or located so
that it is unlikely to be exposed to pollution during normal use of the appliance due to
a) condensation produced by the appliance;
b) the use of liquids and solids, such as ingredients, products or cleaning agents.
30 RESISTANCE TO HEAT AND FIRE
This clause of Part 1 is applicable except as follows.
30.2.2
Not applicable.
31 RESISTANCE TO RUSTING
This clause of Part 1 is applicable.
32 RADIATION, TOXICITY AND SIMILAR HAZARDS
This clause of Part 1 is applicable.
2
50
A
25
60
°
10
35
IEC 2717/02
Dimensions in millimetres
Key
A
bowl
Figure 101 – Splash apparatus
Annexes
The annexes of Part 1 are applicable except as follows.
Annex AA
(normative)
Aging test for elastomeric parts
The aging test on elastomeric parts is carried out by measuring their hardness and mass before
and after immersion in water at elevated temperature.
The test is carried out on at least three samples of each part. The samples and test procedure
are as specified in IS 3400 (Part 6) with the following modifications.
5
TEST LIQUIDS
The test is carried out with water.
Care is taken to ensure that the total mass of the test pieces immersed does not exceed 100 g
for each litre of water, that the test pieces are completely immersed and that their entire
surface is freely exposed to the water. During the tests, the test pieces are not exposed to
direct light. Test pieces of different compounds are not immersed at the same time in the same
solution.
6
6.4
TEST PIECES
Conditioning
The temperature is 23 °C  2 °C and the relative humidity is (50  5) %.
7
7.1
IMMERSION IN THE TEST LIQUID
Temperature
The water is heated within 1 h with the test pieces immersed, to a temperature of 75
5
0
°C
and maintained at this value. Water at the same temperature is added to compensate for
evaporation.
7.2
Duration
The test pieces are immersed for a total period of 48
1
0
h.
The test pieces are then immediately immersed in fresh water that is maintained at ambient
temperature. The pieces are immersed for 45 min  15 min.
After removal from the water, the test pieces are dried with blotting paper.
8
8.2
PROCEDURE
Change in mass
The increase in mass of the test pieces shall not exceed 10 % of the value determined before
immersion.
8.6
Change in hardness
The micro-test for hardness applies.
The hardness of the test pieces shall not have changed by more than 8 IRHD. Their surface
shall not have become sticky and shall show no crack visible to the naked eye or any other
deterioration.