CEA 4001 - Page 108

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The electrolyte level and density of all open nickel-cadmium cells (including those in diesel engine
starter batteries and those for control panel power supplies) shall be checked. If the density is low the
battery charger shall be checked and if necessary repaired or replace. If the charger is working normally,
the battery or batteries affected shall be replaced.
Any secondary electrical supplies from diesel generators shall be checked for satisfactory operation.
18.4.2.7 Stop valves
All stop valves controlling the flow of water to sprinklers shall be operated to ensure that they are in
working order, and securely refastened in the correct mode. This shall include the stop valves on all water
supplies, at the alarm valve(s) and all zone or other subsidiary stop valves.
18.4.2.8 Flow switches
Flow switches shall be checked for correct function.
18.4.2.9 Replacement parts
Replacement parts held as spare shall be checked for number and condition.
18.4.3 Half-yearly routine
18.4.3.1 General
The following checks and inspections shall be made at intervals of not more than 6 months.
18.4.3.2 Dry alarm valves
Dry alarm valves, and any accelerators and exhausters, in dry pipe installations and subsidiary
extensions shall be exercised in one of the following ways, as appropriate:
a) the inspection cover plate shall be removed and the moving parts shall be operated manually;
b) if a screw-down diaphragm interlocking key type subsidiary stop valve is fitted downstream of
the alarm valve, subsidiary stop valve shall be closed, the space between the dry pipe valve
clack and the underside of the subsidiary valve shall be primed with water, and the
installation drain valve shall be opened.
NOTE : alternate installations need not be tested in this way since they are exercised twice a year as
a result of the change-over from wet to dry operation and back.
18.4.3.3 Fire brigade and remote central station alarm
The electrical installation shall be checked.
18.4.4 Yearly routine
18.4.4.1 General
The following checks and inspection shall be made at intervals of not more than 12 months.