l
The CDM is manufactured from food grade plastics.
7.10
Motion sensor
Motion sensors are passive infra-red (PIR) devices that detect activity. The diagram below shows the
detection pattern of motion sensors.
The motion sensor must have an uninterrupted view directly in-front and to the sides. The preferred
location of the motion sensor is in the upper section or in header panel of the cooler to ensure the
best motion detection and to lower the risk of the motion sensor being blocked by objects such as
packages.
For EMS controllers with integrated motion sensors, a remote motion sensor can be used. The
motion sensor head is supplied detached from the cable to allow the cable to be easily routed
through holes or foamed into place as required by the OEM or installer.
7.11
How to mount a remote motion sensor
The motion sensor should be mounted vertically with the connector at the bottom for optimal per-
formance. Mounting horizontally with the connector at the sides results in the motion sensor being
less sensitive. However, the motion sensor still works correctly.
The motion sensor must not be located behind any material such as glass or polycarbonate.
For a motion sensor that is not mounted flush with the panel, the diagram below shows the minimum
recommended clearances to ensure motion detection. For example, if the motion sensor is mounted
15mm behind the panel, a 30mm diameter aperture is required.
The motion sensor head must be fixed using counter sunk screws or bolts with the following
characteristics:
l
Head: countersunk maximum diameter 6.0mm (0.24in)
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Thread: maximum diameter 4.0mm (0.16in).
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27 February 2014
