QB/T 1240-2013 English PDF (QB/T1240-2013)

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QB/T 1240-2013: Household and similar food roasting appliance Toaster, waffle iron and sandwich grill
QB/T 1240-2013
LIGHT INDUSTRY STANDARD OF
THE PEOPLE’S REPUBLIC OF CHINA
ICS 97.040.20
Classification number: Y63
Registration number: 41623-2013
Replacing QB/T 1240-1991
Household and similar food roasting appliance
Toaster, waffle iron and sandwich grill
面包片烘烤器, 华夫饼炉, 三明治炉
ISSUED ON: JULY 22, 2013
IMPLEMENTED ON: DECEMBER 01, 2013
Issued by: Ministry of Industry and Information Technology of PRC
Table of Contents
Foreword ... 3 
1 Scope ... 5 
2 Normative references ... 5 
3 Terms and definitions ... 6 
4 Product classification and model nomenclature ... 7 
5 Requirements ... 7 
6 Test methods ... 10 
7 Inspection rules ... 15 
8 Marking, packaging, transportation, storage ... 16 
Appendix A (Normative) Standard color scale of browning ... 18 
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard replaces QB/T 1240-1991 “Household food toaster - Electric
oven, bread slice toasters, waffle bakers, sandwich roasting ovens”.
The main differences between this standard and QB/T 1240-1991 are as follows:
- DELETE the requirement for the electric oven;
- ADD the contents of preface; DELETE the additional descriptions;
- MODIFY the scope of clause 1; CANCEL the requirements for rated power;
- ADD, DELETE, MODIFY some normative references in clause 2;
- MODIFY the definition of toaster, waffle iron and sandwich grill in clause 3;
ADD the terms and definitions for standby mode, off mode, browning adjust
device;
- MODIFY the clause 4.1 classification and clause 4.2 model nomenclature;
- DELETE the clause 4.3 specifications and basic parameters from the
original standard;
- ADJUST the order of the provisions of clause 5 and the test methods in
clause 6;
- DELETE the contents of clauses 5.1, 5.2, 5.10, 5.11, 6.2, 6.3, 6.4, 6.12,
6.13 from the original standards;
- ADD the clause 5.1 normal working environment;
- ADD the clause 5.2 safety, the corresponding test method is clause 6.2;
- MODIFY the contents of the clause 5.9 in-appliance material from the
original standard; MOVE it into clause 5.3, the corresponding test method
is clause 6.3;
- ADD the clause 5.5 standby power consumption and off power consumption,
the corresponding test method is clause 6.5;
- MODIFY the clause 5.6 temperature control performance and clause 6.9
test method of the original standard; MOVE them into clause 5.9 and clause
6.9, respectively;
- DELETE the contents of the clause 5.12 durability and the clause 6.11 test
Household and similar food roasting appliance
Toaster, waffle iron and sandwich grill
1 Scope
This standard specifies the terms and definitions, product classification and
model nomenclature, requirements, test methods, inspection rules, marking,
packaging, transportation and storage of household and similar food roasting
appliance.
This standard applies to the toaster, waffle iron and sandwich grill for household
and similar food roasting appliance which have a rated voltage not exceeding
250 V.
2 Normative references
The following documents are essential to the application of this document. For
the dated documents, only the versions with the dates indicated are applicable
to this document; for the undated documents, only the latest version (including
all the amendments) are applicable to this standard.
GB/T 1019 General requirements for the package of household and similar
electrical appliances
GB 4706.1 Household and similar electrical appliances – Safety - Part 1:
General requirements (GB 4706.1-2005, IEC 60335-1:2001, IDT)
GB 4706.14 Household and similar electrical appliances - Safety - Particular
requirements for grills toasters and similar portable cooking appliances (GB
4706.14-2008, IEC 60335-2-9: 2006, IDT)
GB 5296.2 Instructions for use of products of consumer interest - Part 2:
Household and similar electrical appliances
GB 9684 Hygienic standard for stainless steel food containers and table
wares
GB 11333 Hygienic standard for aluminum-wares for food use
GB 13121 Hygienic standard of ceramics for food containers
than 95%;
c) Places without significant vibration, corrosive gases or flammable gases.
5.2 Safety
The product safety as covered by this standard shall comply with the
requirements of GB 4706.14.
5.3 In-appliance materials
5.3.1 The in-appliance materials in contact with food shall comply with the
relevant national food hygiene standards:
a) Aluminum products shall comply with the requirements of GB 11333;
b) Stainless-steel products shall comply with the requirements of GB 9684;
c) The ceramic products shall comply with the requirements of GB 13121;
d) Coatings and products of other materials shall comply with the
corresponding national standards, industry standards or be certified by the
relevant institutions through inspections to prove compliance with the
national food hygiene requirements;
5.3.2 After the coating on the sprayed surface is subjected to the cross-cut test,
the number of coating-off grids shall not exceed 5%.
5.4 Timing control performance
For the appliances with timing function, the timing deviation of the timer shall
not exceed ±5%.
5.5 Power consumption at standby mode and off mode
The power consumption at standby mode and off mode shall be not more than
0.5 W. For the appliances which have the information or state display (including
clock) function in the standby mode, the power consumption at standby mode
shall be not more than 1 W.
5.6 Roasting performance
When the food is subjected to a roasting test, if the browning is between 4 and
12 in the standard color scale (see Appendix A), the difference in the same
surface shall not be more than 3 chroma. The color difference at the surfaces
of foods which are roasted at the same place shall not be more than 3 chroma.
5.7 Roasting time
Squeeze the tape and the coating to achieve maximum bond. Pull one end of
the tape up quickly along the perpendicular direction. Along two different
directions in the grid area, respectively repeat the above steps 5 times for each,
use new tape for each repeated operation.
6.4 Timing control performance
Turn the appliance to the rated voltage, adjust the timer to the maximum timing,
measure the time when it automatically cuts off the power.
6.5 Power consumption at standby mode and off mode
The accuracy of the power meter and electric energy meter used in this test
shall not be less than 0.01 W.
Before the test, it shall place the appliance in an environment which has a
temperature of 15 °C ~ 25 °C and a humidity of 45% ~ 75% for at least 6 h, so
that the overall temperature of the appliance is at (20 ± 5) °C.
Note: It may use the forced cooling method to assist in reducing the temperature
of the appliance, in which case the appliance’s placement time may be reduced.
The appliance is in an unloaded state during the test and is in the state of
maximum power consumption in standby mode or off mode. The test is carried
out in accordance with the methods of 6.5.1 or 6.5.2.
6.5.1 Short-term power measurement method
This test method is only applicable to the selected mode and power stable
conditions. If the measured change of power within 5 min is less than 5%, the
power is considered to be stable, in which case it may directly read the power
value as displayed by the instrument.
Connect the appliance to the measuring instrument. Select the mode to be
measured. After the appliance has passed at least 5 minutes to stabilize the
power, use the measuring instrument to measure the power consumption, the
time shall not be less than 5 min. The change of power value during the
measurement is less than 5% (obtained from the observed maximum power
value), the power is considered to be stable. Directly record the power value at
the end of 5 min from the measuring instrument.
6.5.2 Average power method
This test method is suitable for the conditions where the selected mode or the
measured power is unstable. However, this method is also applicable to all
cases where the mode is stable. This method uses the average power reading
or cumulative energy for the user’s selected time period.
sandwiches shall meet the requirements of 5.8.
6.9 Temperature control performance
6.9.1 Place the browning adjustment device at the highest position. Let the
appliance run at no load. Use the thermocouple to measure the temperature of
the temperature controller at the 3rd, 4th, 5th ON and OFF operations at the
center points of the upper and lower working surfaces of the appliance.
Calculate the average temperature for each ON and OFF operation.
6.9.2 In the operating temperature range of the waffle iron and sandwich grill,
let the appliance run at no load. Use the thermocouple to measure the
temperature of the temperature controller at the 3rd, 4th, 5th ON and OFF
operations at the center points of the upper and lower working surfaces of the
appliance. The deviation of action temperatures is the difference between each
OFF temperature and nominal temperature value (if any). The amplitude of
change of ON-OFF action temperatures is the maximum temperature of the
absolute value of the difference between each ON temperature and OFF
temperature. The deviation of action temperatures and the amplitude of change
of ON-OFF action temperature shall comply with the provisions of 5.9.2.
6.10 Durability of hinge
The durability of the two grille hinges of the waffle iron and the sandwich grill
shall be subjected to the open-close test at the frequency of 8 times/min ~ 10
times/min. The appliance is opened to the maximum angle during the test. Carry
out 5000 times of tests.
6.11 Bread rack’s operating force
Put a standard bread slice in the roasting cavity. Open the bread rack’s lock.
Use a dynamometer to hook the handle of the bread rack as shown in Figure 2,
to measure the maximum force required for the operation.
6.12 Service life of toaster
Connect the toaster to the rated voltage. Place the browning adjustment device
to the highest position. Press down the button. After 30 s after the first popup,
press down the button again. After the second popup, first place it for 5 min,
then col the appliance to room temperature, which forms 1 cycle. Carry out
2500 cycles in total.
7 Inspection rules
7.1 Classification of inspections
Inspection is divided into exit-factory inspection and type inspection.