Household and similar electrical appliances. Test code for the determination of airborne acoustical noise -- Particular requirements for washer-dryers
This clause of PartĀ 1 is applicable except as follows:
1.1 Scope
1.1.1 General
Addition:
These particular requirements apply to single-unit electric washer-dryers for household and similar use intended for placing on the floor against a wall, for building-in or placing under a counter, a kitchen worktop or under a sink, for wall-mounting or on a counter.
1.1.2 Types of noise
Replacement:
The methods specified in ISOĀ 3743ā1, ISOĀ 3743ā2 and ISOĀ 3744 can be used for measuring noise emitted by washer-dryers.
1.1.3 Size of the source
Replacement:
The method specified in ISOĀ 3744 is applicable to noise sources of any size. When applying ISOĀ 3743ā1 and ISOĀ 3743ā2, care should be taken that the maximum size of the washer-dryers under test fulfils the requirements specified in 1.2 of ISOĀ 3743ā1:2010 and 1.3 of ISOĀ 3743ā2:1994.
1.2 Object
Addition:
Requirements for the declaration of noise emission values are not within the scope of this document.
NOTEĀ 101 For determining and verifying noise emission values declared in product specifications, see IECĀ 60704ā3.
1.3 Measurement uncertainty
Replacement:
For washer-dryers, the estimated values of standard deviations of sound power levels, determined in accordance with this document are as indicated in TableĀ 101 and 102.
TableĀ 101
Standard deviations of sound power levels of washing and spinning final results for washer-dryer
| Standard deviation (dB) | |
|---|---|
| Ļr (repeatability) | ĻR (reproducibility) |
| 0,6 | 1,0 |
TableĀ 102
Standard deviations of sound power levels of drying final results for washer-dryer
| Standard deviation (dB) | |
|---|---|
| Ļr (repeatability) | ĻR (reproducibility) |
| 0,4 | 0,8 |
1.101 Standard deviation for declaration and verification
For the purpose of determining and verifying declared noise emission values for washing and spinning for washer-dryers in accordance with IECĀ 60704ā3, the values indicated in TableĀ 103 apply.
TableĀ 103
Standard deviations for declaration and verification for washing and spinning final results for washer-dryer
| Standard deviation (dB) | ||
|---|---|---|
| ĻP (production) | Ļt (total) | ĻM (reference) |
| 1,0 to 2,2 | 1,4 to 2,4 | 2,5 |
For the purpose of determining and verifying declared noise emission values for drying for washer-dryers in accordance with IECĀ 60704ā3, the values indicated in TableĀ 104 apply.
TableĀ 104
Standard deviations for declaration for drying final results for washer-dryer
| Standard deviation (dB) | ||
|---|---|---|
| ĻP (production) | Ļt (total) | ĻM (reference) |
| 0,7 to 1,0 | 1,1 to 1,3 | 1,5 |
| SDO | BSI: British Standards Institution |
| Document Number | IEC 60704-2-16 |
| Publication Date | April 29, 2020 |
| Language | en - English |
| Page Count | 26 |
| Revision Level | 11 |
| Supercedes | |
| Committee | CPL/59 |