Understanding The PIR Bulkhead Controls:
PIR Bulkhead Troubleshooting & User Hints:
UNDERSTANDING THE PIR BULKHEAD CONTROLS:
(Referring to Fig.5 below)
ADJUSTING THE DURATION TIME:
The length of time that the light remains switched on after activation can be adjusted from (2±0.5)
minutes to (4±1) minutes. Rotating the TIME knob from (+) to (-) (clockwise) will reduce the time
duration.
Note:
Once the light has been triggered by the PIR sensor any subsequent detection will start the
timed period again from the beginning.
ADJUSTING THE LUX CONTROL LEVEL:
The lux control module has a built-in sensing device (photocell) that detects daylight and darkness.
The (
R
) position denotes that the bulkhead light can work at day and night, and the (
É
) position will
only work at night. You can set to operate the light at the desired level by adjusting the LUX knob.
SETTING THE CONTROLS:
01) Turn the LUX control knob to light (
R
) position, at this stage ensure that the time control knob is
set at minimum duration time (-) position. The bulkhead light will now switch on and remain on
for about 30+ seconds.
02) Direct the sensor toward the desired area to be scanned by adjusting the PIR sensor, have another
person move across the centre of the area to be scanned and slowly adjust the PIR sensor until
the unit senses the presence of the moving person, causing the lamp to switch on. (Refer to Fig.
6 above).
03) Adjust time control to required setting.
04) To set the lux level at which the lamp will automatically switch “on” at night, turn the LUX control
knob from daylight to night (
É
). If the lamp is required to switch on earlier, e. g. dusk, wait for the
desired environment light level, then slowly turn the LUX control knob towards the daylight (
R
)
while someone walks across the centre of the area to be detected. When the lamp switches on,
release the LUX control knob. You may need to make further adjustments to achieve your ideal
light level setting.
PIR BULKHEAD TROUBLESHOOTING AND USER HINTS:
Note:
all passive infra red detectors are more sensitive in cold and dry weather than warm and wet
weather.
PROBLEM
POSSIBLE CAUSE
SUGGESTED REMEDY
Light does not switch
on when there is
movement in the
detection area.
1. No mains voltage
Check all connections, and MCB Fuses /
switches
2. Nearby lighting is too bright
Redirect sensor or relocate the unit
3. Controls set incorrectly
Readjust sensor angle or control knob
4. Lamp blown
Check lamp functions and replace if necessary
5. Lamp not fitted correctly
Make sure the lamp is correctly seated in the
lampholder
6. Wired incorrectly
Check wiring and confirm its wired as per the
wiring diagram
7. Sensor positioned in wrong direction
Adjust angle and direction of PIR for best
results walk across beam
Light switches on for
no apparent reason
(false trigger)
1. Heat from lamp body activating sensor
Adjust PIR sensor or floodlight to allow a
minimum gap of 40mm between floodlight
body and sensor head
2. Heat sources such as air-con, vents, heaters,
flues, other outside lighting, moving cars trees
or shrubs are activating sensor
Adjust direction of sensor head away from
these sources
3. Animals / birds activating sensor
Redirecting sensor head may help
4. Interference from on/off switching of electric
fans or lights on the same circuit as your
security floodlight.
(This problem does not always occur but a faulty
switch or noisy fluorescent light may cause the
security floodlight to switch on)
Should the false triggering become,
troublesome, consider:
(a) Replacing a faulty switch
(b) Replacing noisy fluorescent tubes and/or
starters
(c) Connecting the floodlight to a separate
circuit (in most cases where one or more
of the above suggestions have been
carried out, false triggering has been
reduced)
5. Reflection from swimming pool, or reflective
surface such as smooth white walls
Redirect sensor
Light remains on
1. Continuously false triggered
Redirecting sensor head may help
2. Time is set to long
Reduce time
Light remains on at
nighttime
Possible heat source in detection zone
Cover PIR sensor lens with a thick cloth, if the
light turns off check detection area for heat or
reflective source, reposition head
Light switches on
during daylight hours
LUX control knob is set to daylight position
Turn the LUX control knob to desired light
level setting
When setting the lux
controls in daylight
the detection distance
becomes shorter
Interference by sunlight
Re-test at night
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Fig 6
