Reer JANUS Installation, Use And Maintenance Manual

Also see for JANUS: Quick installation guide

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Reer JANUS Installation, Use And Maintenance Manual Manual pdf 42 page image

8540573 • 16/09/2016 • Rev.20 41CHECKOUTS AND MAINTENANCEVerification of barrier efficiency. Before each work shift or before switching on, check the correct operation of thephotoelectric barrier.Proceed as follows, intercepting the beams using the appropriate test object (available free ofcharge on request). The correct test object must be used for testing, depending on the barrier resolution.Please see page 41 for the correct ordering code.Refer to Figure 38: Introduce the test object into the protected area and move it slowly, starting from thetop and moving down (or vice versa), first in the centre and then in the vicinity of boththe Emitter and the Receiver. Multibeam models:Intercept each beam with an opaque object, first in the center of the detection zoneand then close to the emitter and the receiver. Make sure that during each stage of the test object’s movements the red LED on theReceiver is always on.Figure 38The JANUS barrier does not require anyspecific maintenance operations; however,periodic cleaning of the front protectivesurfaces of the Emitter and Receiver optics isrecommended.Wipe using a clean, damp cloth; in particularlydusty environments, after cleaning the frontsurface, the use of an anti-static spray isrecommended.Never use abrasive or corrosive products,solvents or alcohol, which could damageparts. Do not use woollen cloths, that couldelectrify the front surface. Grooving or fine scratching of the front plastic surfaces can increase the amplitude of theemission angle of the light curtain, jeopardising detection efficiency in the presence oflateral reflecting surfaces. This issue can also cause interference by muting sensors and jeopardise reliability of thesystem, also in absence of lateral reflecting surfaces. It is therefore fundamental to pay particular attention during the cleaning phases of thecurtain front window, especially in environments where abrasive dusts are present. (E.g.cement factories, etc).If the ORANGE weak signal LED on the Receiver switches on (LED 1 in Figure 26), check that:the front surfaces are clean;the Emitter and Receiver are aligned correctly.If the LED stays on, contact the REER service department.