Timeguard MLBPRO500C - Manual (Page 7)

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6 Troubleshooting
Each MLB/WPRO500C has undergone rigorous testing under ISO9002 quality
control procedures before it leaves the factory. Malfunctions are most often due to
incorrect installation or adjustment of the unit. If you are experiencing problems,
please check the following fi rst.
Problem
Lights
do not
turn ON
Lights
do not
turn OFF
Lights
go ON
and OFF
quickly
Light turn
ON in a
storm
Possible Solution
1. Check if all wiring connections are correct.
2. Turn off power for at least 10 seconds, then on again.
3. Check if all light fi xtures are working properly, and the power is
connected correctly to the MLB/WPRO500C.
4. Check if the bulb is seated fi rmly with good contacts.
5. Check if the LUX knob is adjusted to the desired light level.
6. Check if the detection angle is right and aimed at the desired area.
1. Set the TIME knob to minimum and check again.
2. Make sure that the unit is not installed looking towards objects
which may move in the wind, such as bushes and that the unit is
mounted securely.
3. Stay away from the detection zone to avoid activating.
4. Make sure that the unit is not looking toward any areas or objects
which have surfaces that are highly refl ective or are subject to rapid
temperature change, such as pools, air conditioners or heating vents.
5. Check if all wiring connections are correct, or if the main power
supply has been inadvertently connected to the L1 (Switched Live)
terminal.
1. Check if there are any white or refl ective surfaces in the detection
area and adjust the sensor to a different direction or adjust the lens
shield.
2. The sensor is more sensitive in winter. Please check again when the
temperature gets back to normal.
Rain, snow and storm can create big temperature changes that
activate the sensor. False triggering can be minimised by installing the
sensor in a protected location or to minimise the detection distance
using the meter control.
Fig. 27
C Setting of LUX, METER and TIME Knobs
for Automatic Operation
(See Fig. 27).
When Walk Tests are complete, the unit can be set up for Automatic mode.
The TIME setting controls how long the unit remains illuminated following activation
and after all motion ceases.
The minimum time (fully anti-clockwise) is approx. 6 seconds, whilst the maximum
time (fully clockwise) is approx. 12 minutes. Set the control to the desired setting
between these limits.
The DUSK (LUX) control determines the level of darkness required for the unit to
start operating. The DUSK adjustment knob is indicated by the “Moon” and “Sun”
legends. We suggest an initial DUSK setting of between 2/3 and 3/4 of the way
round from the “Sun” towards the “Moon” setting.
The METER control will allow you to set the detection distance from 3 meters up to
a maximum of about 16 meters.
Adjust the METER knob as necessary to reduce the coverage until it meets the users
preference.
Note: Up to a radius of approx. 3m from the fl oodlight sensor there is 360º
detection coverage which is not adjustable..
• A small fl at blade screwdriver is applicable for all the above knobs.
TIME
TIME
METER
12 min 6 sec
30
1 min
5 min
3 min
LUX