VDOT-ASD-100 Aspiration Detector
Velocity Detection
35
VDOT-ASD-100 Aspirating Smoke Detector User’s Manual V1
Maintenance
VDOT-ASD-100 aspirating smoke detector is a very low maintenance detection system. If
required, external cleaning of the unit should be performed using a damp (not wet) cloth.
Do not use solvents as these may mar the display bezel. The only part that may require field
replacement during servicing is the dust filter. The filter condition can be checked from the
Status Screen of the Display, which gives a percentage reading of filter efficiency and the
filter expired due date. When the level drops to 70% or the date is due the detector will
signal a Filter renew fault and the filter will need replacing.
The following illustration shows how the dust separator is replaced.
Open the front cover using the key provided, and locate the filter at the bottom of the
detector as shown. Untighten the screw in the middle of the filter to remove the filter. Fit a
new filter, make sure to push the filter fully home and tighten the screw.
When the replacement filter is fitted, enter the setup menu to set a new filter. When new
filter is set, a filter flow calibration process will be initiated to learn the flow rate passing
through the new filter. The filter due date will also be set to two years from the date
changing the new filter.
Preventive Maintenance
To guarantee the best performance of VDOT-ASD-100 aspirating detection system, a periodic
preventive maintenance is required. The PM schedule is as follows:
Time
Content
Monthly Quarterly
Every 6
months
Every
year
Every two
years
Power Supply Check
V
V
V
V
V
Display Check
V
V
V
V
V
Air Flow Check
V
V
V
V
V
End Cap Test
V
V
V
V
Sampling pipes inspection
V
V
V
Signaling inspection
V
V
Clean sampling pipework
V
There are monthly inspection, quarterly inspection, 6 months inspection, yearly inspection
and two years inspection schedules for the VDOT-ASD-100 aspirating smoke detection
