【正文】 est methods Sorbonnes Partie 4: M233。essai sur site Abz252。fverfahren This European Standard was approved by CEN on 22 July 2022. CEN members are bound to ply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Uptodate lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION C OM I T201。E N D E NOR M AL I S ATI ON EUR OP 196。R NOR M UNG Management Centre: rue de Stassart, 36 B1050 Brussels 169。 BSI Contents Page Foreword...................................................................................................................................................................... 4 1 Scope .............................................................................................................................................................. 5 2 Normative references .................................................................................................................................... 5 3 Terms and definitions ................................................................................................................................... 5 4 General onsite test conditions .................................................................................................................... 5 5 Commissioning testing of type tested fume cupboards ........................................................................... 6 Scope and purpose........................................................................................................................................ 6 Inspections ..................................................................................................................................................... 6 Manufacturer39。 BSI Pressure drop test ....................................................................................................................................... 12 Air flow visualization ................................................................................................................................... 12 Alarm system test ........................................................................................................................................ 12 Inspections ................................................................................................................................................... 12 7 Qualification testing of non type tested fume cupboards ....................................................................... 12 Scope and purpose ..................................................................................................................................... 12 Inspections ................................................................................................................................................... 12 Manufacturer39。 BSI Foreword This document (EN 141754:2022) has been prepared by Technical Committee CEN/TC 332 “Laboratory equipment”, the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by March 2022, and conflicting national standards shall be withdrawn at the latest by March 2022. The tests established in this standard should be carried out by trained personnel. This European Standard EN 14175 consists of the following parts, under the general title Fume cupboards ? Part 1: Vocabulary ? Part 2: Safety and performance requirements ? Part 3: Type test methods ? Part 4: Onsite test methods ? Part 5: Remendations for installation and maintenance (in preparation) ? Part 6: Variable air volume fume cupboards (in preparation) According to the CEN/CENELEC Internal Regulations, the national standards anizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EN 141754:2022 5 Licensed copy:PONTYPRIDD COLLEGE, 06/03/2022, Uncontrolled Copy, 169。 BSI 5 Commissioning testing of type tested fume cupboards Scope and purpose The following test methods are considered to be appropriate for the missioning test after installation of a fume cupboard which has been type tested in accordance with EN 141753 before installation. It is the aim of missioning testing to show the correct installation of the fume cupboard and to check adverse effects of the room air flow and of the extract system on the performance of the installed empty fume cupboard under its intended design condition