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2.4 Rada Pulse 124, 125 and 126 Ceiling sensors
Important!
care must be taken to avoid installing system cables in close proximity
to other electrical cables and devices as this may impair the function of the rada
pulse system. in problematic installations the system cables should be installed
within earthed (grounded) steel conduit.
always avoid installing pulse ceiling sensors near heating or air conditioning units
as air currents can cause nuisance tripping.
1.
mark the ceiling position for the sensor (minimum distance of 0.5 m), and cut
a circular hole of 78 mm diameter.
Warning!
care must be taken to avoid hidden pipes and cables.
note depth of mounting surface, and adjust base unit depth tabs to nearest
setting below actual depth (minimum setting 9.5 mm, maximum 25 mm). install
the cable from the rada pulse control box via chosen route, extending if
necessary. if required, cabling may be housed within conduit piping (the base
unit accepts nominal 16 mm ext). feed cable through base unit. pass base
unit through mounting hole, and place in position (refer to illustration), fixing to
conduit as necessary.
2.
connect the two-core cable to the connector block (
A
) on the sensor internal
circuit board (
B
, refer to illustration). wiring polarity is not important.
3.
align and offer up the sensor unit to the base unit (refer to illustration), and
retain with bolts supplied (but do not tighten these yet).
4.
The sensor (
C
) is retained on a swivel bracket, which enables the sensor to be
directed toward the target area.
rotate the sensor unit until the sensor is directed at, and aligned with, the
required target area. Tighten bolts to secure sensor unit to base unit. align tabs
on cover (
e
) with slots around base unit, and rotate clockwise to secure.
5.
make the connection between the 2 core cable and the rada pulse control box
using the plug-in connector (supplied).
sensor Alignment/sensitivity Adjustment
6.
Grip the cover and rotate anticlockwise, and lower cover away from sensor
unit.
7.
The sensor alignment is adjusted by gently swivelling the sensor on its mounting
bracket – refer to illustration.
8.
The sensitivity is adjustable via a two position (h=high / l=low) switch (
D
, refer
to illustration) on the sensor internal circuit board, which will need to be
separated from the base unit. The unit is supplied with this set at “h” (high).
slide the switch to the “l” position, if required.
9.
Refit the cover, making sure that the sensor window is correctly aligned toward
the wash basin or urinal area.