UL 2908-2017 pdf download
UL 2908-2017 pdf download.Environmental Claim Validation Procedure (ECVP) for Determining Particle Removal for Non-Filter Electrical Appliances.
1.1 This procedure provides a testing methodology for determination and verification of 0.1,0.3,0.5 and1.0 um particle removal.
2.1This protocol is applicable to validation of particle removal performance of electrical appliances usingnon-filter technologies, such as plasma air purifiers in households,offices, etc.
3 Normative References
3.1 The following standard is referenced in this Environmental Claim Validation Procedure.
JEM 1467-2103
Air Cleaners of Household and Similar Use
4 Terms and Definitions
4.1 For the purpose of this procedure,the following definitions apply.
4.2 CLEAN AIR DELIVERY RATE(CADR) – Defined as the measure of the delivery of contaminant freeair by a portable household electric room air cleaner,expressed in cubic meter per minutes (cfm). Moretechnically , clean air delivery rates are the rates of contaminant reduction in the test chamber when theunit is turned on, minus the rate of natural decay when the unit is not running, times the volume of the testchamber as measured in cubic feet. CADRs are always the measurement of a unit’s performance as acomplete system, and they have no linear relationship to air movement per se or to the characteristics ofany particular particle removal methodology.
Adapted by UL from lEC PAS 62587Ed.1.0 b:200 with permission of the American National Standards Institute (ANSl) on behaifol the lIlnternational Electrotechnical Commission.All rights reserved.
4.3 PARTICLE REMOVAL -Removal of target sized airborne particles from indoor air.
4.4 PARTICLE REMOVAL PERFORMANCE – Reduction of the target sized particle concentration afterspecified operating duration of the particle removal function in a room with the maximum volume intendedfor the product use without air exchange,expressed in percentage (%).
cOMPLIANCE,EVALUATION AND ASSESSMENT CRITERIA5 Particle Removal Testing
5.1 Particle used for testing
5.1.1 Particle to be measured shall be cigarette smoke,which include target sized particles.
5.2 Instrument
5.2.1 For weight concentration (mg/m2)measurement,the measuring instrument shall be a lightscattering type or a Piezobalance type，which shall be capable of measurement of the target sizedparticles of 0.1，0.3,0.5 and 1.o um.
5.2.2 For particle count concentration (particles/m ), the measuring instrument such as Scanning MobilityParticle Sizer (SMPS), which shall be capable of measurement of the target sized particles.
5.3 Test room
5.3.1 The test room shall be 20 to 32 m3. A test room larger than 32 m3may be used if it is available andconsidered appropriate for the product to be tested (i.e. same as or close to Effective/Recommendedroom size for the product).The measurement chamber must be closed so that the particle concentrationafter 30 minutes has passed can be at least 80% of the particle concentration at the start of measurement.
5.3.2 The installation position of the object for testing depends on the position specified in the productinstruction manual. if not described in the instruction manual, as shown in Figure C.1 of the Standard forAir Cleaners of Household and Similar Use,JEM 1467-2013, the table top type are placed on the table ofabout 70 cm height,close to the wall and at the center in the depth direction in Figure C.1 of JEM1467-2013.
5.3.3 Floor mount type shall be on the floor close to the wall. Wall hanging type shall be placed as thebottom surface is 180 cm above the floor. In either case, put it in the center in the depth direction of FigureC.1 of the Standard for Air Cleaners of Household and Similar Use,JEM 1467-2013.
5.3.4 The position for measuring the particle concentration shall be 120 cm above the floor in the centerof the room.
5.3.5 When placing a particle concentration measuring instrument in the test room, do not disturb the airflow.
