Ducts Application Note
VESDA-E
35424_02
11
4
System Maintenance
Local Codes & Standards
Note!
The maintenance requirements of all local codes and standards must be
adhered to.
First Year Requirements
Repeat the procedure for Performance Verification, as described above in SYSTEM COMMISSIONING, at
least once every six months. Compare readings with previous records and investigate any discrepancies.
On-Board Filter Replacement
The smoke detector will indicate when its filter needs to be replaced. Replace the filter and repeat the
procedure for Performance Verification as described above in System Commissioning.
Site Visit Requirements
During each site visit, at a frequency specified by local codes and standards, the following procedure must be
carried out.
Step
Action
1
Check flow readings at the smoke detector(s). Differences in flow readings from those of
previous site visits require further investigation such as inspection of the pipes/sampling
tubes integrity for fatigue and creep, or for hole blockage.
2
Check for condensation in the pipes/sampling tubes and address the problem as
described in System Installation under Environment.
3
VEP-1P, check the original hole orientation marks to ensure that they have not been
moved since the last inspection. If the hole orientation has changed, refer to Hole
Orientation Adjustment and readjust.
In addition to the above, the following procedure needs to be carried out during each site visit for pipe
maintenance.
Step
Action (VESDA-E VEP-1P)
1
Disconnect inlet and exhaust pipes from the smoke detector.
2
Remove the end caps from the inlet and exhaust pipes. Back-flush with compressed air.
3
Ensure all pipes are returned to their original configuration.
4
Check overall system performance.
