Bell System bellview, Руководство по установке и эксплуатации

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Bell View Video Entry System
11
PSU138A, PSU138B Power Supplies
Read the section called ‘Important Safety Information’ before installing the power
supply.
A good mains safety earth must be connected to the cabinet housing the power supply.
The cabinet must be placed in a protected indoor environment and not exposed to
dripping or splashing. The Cabinet must be secured to the wall with adequate fixings
so that there is no possibility of it falling down.
The Lead Acid battery should only be connected once the system has been fully tested.
Connection is made by 2 leads with spade terminals from the power supply. Observe
the correct polarity (red to positive, black to negative).
The PSU Control Cabinet contains a small PCB labelled ‘Power Supply Distributor’ .
This is used to supply 12V to external components. Do not cut or modify the power
supply leads as supplied.
Entrance Panel
Careful consideration should be given to the location of the entrance panel to ensure
the best possible lighting conditions for the camera. In general strong back-lighting of
the subject (by the sun and sky) should be avoided as the contrast between foreground
and background may be too great for the camera. The field of view should contain as
little of the sky as possible, particularly if south facing - a wall or other buildings would
be preferable. If a back-lit situation is unavoidable, additional lighting may be necessary
to illuminate the caller and avoid a dark outline image.
The panel should be mounted at an optimum height of 1.6 m, measured between the
ground and camera window.
Electric Door Release
Use the FAIL-SECR connections for fail-secure releases; use the FAIL-SAFE
connections for fail-safe releases and magnetic locks. When installing lock releases
please allow a little movement on the door as operation will be impaired if fitted too
tight.