VAR8 and Variants Operation, Commissioning, Fault Finding, and Maintenance Guide -
Is
Page 154 of 166
sue: 02 complete, approved
29 Maintenance
To comply with BS5839 Part 8: 1998 (a Code of Practice - a recommendation) and BS EN60849: 1998 (a
Specification - a requirement), it is important that the system as a whole is operated and maintained
appropriately. Please refer to these standards for detailed information.
The following routine and special maintenance activities are required, and performed by personnel defined
as follows:
• ‘End user’ is the owner of the system;
• ‘Person in charge’ is the person operating the system;
• ‘Responsible person’ is the person who has been given responsibility for the system.
29.1 Training
All the standards emphasise the importance of using trained and qualified personnel.
Also, every occurrence of a system fault needs to be accurately logged (see Section “29.2 Records”, below)
so that reliable fault histories can be used to provide warning of pending system failures through fault trends.
An engineer needs training to appreciate the importance of this administrative function otherwise it may not
get done.
It is worth noting that, as real fire conditions are infrequent, personnel involved in the operation of the system
should be retrained on a regular basis.
29.2 Records
The end user or a maintainer contracted by the end user is required to keep appropriate records including
installation records, and log book including maintenance records.
BS EN60849 requires that the records comprise as a minimum:
1. Installation records
a. Details of the locations of all items of equipment.
b. ‘As installed’ performance measurements of the system including:
• Measured loudspeaker loading per circuit in emergency mode;
• Settings of any adjustable items within the system, including the output level of power
amplifiers;
• Sound pressure levels;
• Intelligibility measurements.
2. Log book
A stiff-covered log book, in which all usage of the system and all fault occurrences are recorded,
together with all available automatically produced records, to include:
a. Dates and times of usage of the system;
b. Details of tests and routine checks carried out;
c. Time and date of each fault occurrence, as reported in the fault log;
d. Details of the fault found and the circumstances of it being found, for example during routine
maintenance;
e. Action taken to rectify or remedy any faults;
f. Date, time and name of person in charge of the system;
g. Countersignature of the responsible person, if any faults occurred or have been rectified.
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