Audio Unit – Machine Room 2.4472.4 Audio Unit – Machine RoomDescriptionThis audio unit is designed for machine room installation. Compared with the othertypes, it has some unique features: The audio unit contains a telephone set with the HandsFree/receiver modesfor good function in a noisy environment. The attached telephone is equipped with a keypad for function selection andsystem programming. The attached telephone does not ring. The audio unit is equipped with asiren that is loud enough for a noisy environment.o The machine room audio unit can be shared by multiple lifts. The audio unit is equipped with a lift blocking contact in case LN fails to callfor help.siren – beeps to alert incoming call or triphony beginningLED indicator (red)shining – initialisation (10s)constantly shining – initialisation errorbrightly shining – light bell (together with the siren beep)Door locking screwAddress adjustment doorsLift number (1–8) adjustmentAudio unit position adjustment“Call in progress” indicator – yellow“Call established” indicator – green“Fireman connection” – green flashingALARM button – white-backlit at relaxTRIPHONY button – yellow-backlit when the triphony mode isactiveFigure 2.19 Audio Unit– Machine RoomDescription
