11066 Searchpoint Optima Plus v2.indd - Merkantile

MAN0551.P65 Issue 06 - 03/042108M05017. ROUTINE CHECKS(8) Refit or replace the Dust Barrier and Standard WeatherProtection.(9) Verify that there are no ACTIVE FAULTs or WARNINGsby checking that the ‘/’ line is present on the right sideof the CALIBRATE / DISPLAY screen. If there areFAULTs or WARNINGs, the ‘/’ will be replaced witheither an F or a W.(10) If ACTIVE FAULTs or WARNINGs are present,investigate these by using the DIAGNOSTIC menuoptions. Wherever possible, correct any ACTIVE FAULTsor WARNINGs before proceeding to the next stage.Having completed the above steps, you are now ready toperform a functional response check. Functional responsechecks can either be performed using the Gassing Cover and%LEL concentration gas or using the Remote Gassing Cell andhigh %V/V gas. The procedures for performing functionalresponse checks are described in the following sections.7.2.1 Response Check Using Gassing Cover and%LEL Concentration GasNote: For best results when performing functional responsechecks it is important to re-ZERO a unit before theresponse check.(1) For best results, allow the sensor to remain under powerfor one hour prior to performing response check. Thisallows the unit's temperature to stabilise in the operatingenvironment.77