Contract Service and Maintenance
Systems shall be thoroughly inspected and tested for proper
operation by qualified contract personnel in accordance
with the requirements of NFPA as well as any other standard
accepted to the authority having jurisdiction�� Before any
checks are carried out, ensure the extinguishing system
is isolated electrically and mechanically and remove all
electrical and pneumatic actuators�� No maintenance work
should be carried out without obtaining approval from the
Fire Officer and advising any personnel within the hazard
area�� The following Programme should be carried out
in addition to the User’s Programme of Inspection�� The
user shall be provided with a signed and dated report of
the inspection advising any rectification carried out or
needed��
3 Monthly Actuator Check .
Test and service all actuating mechanisms��
3 Monthly Electrical Systems Check
Test and service all electrical detection and alarm systems
as recommended in NFPA as well as any other standard
accepted to the authority having jurisdiction��
6 Monthly Container Check
Externally inspect containers for signs of damage or
unauthorised modifications�� Check container labels are
securely fixed and legible�� Check container brackets and
fittings��
6 Monthly Contents Check
Examine the container pressure gauge reading and refer to
the temperature correction chart�� If the container pressure
corrected to temperature is below 10% of the stated
pressure it must be replaced or recharged��
Verification of the content of FM200
®
in the containers
may be achieved through either liquid level detection or
container weighing�� If containers show a extinguishant
loss of more than 5% or a pressure loss (adjusted for
temperature) of more than 10%, the container should be
refilled or replaced��
Container Weighing
Where a Client does not wish to use an approved
distributors maintenance contract or the specialised
liquid level detection equipment, then containers must be
weighed to establish the FM200
®
content�� The weighing
procedure is as follows:
Remove all manual controls, pressure actuators
and pressure actuation pipe or tubing and flexible
electrical connectors��
Disconnect and remove discharge piping / discharge
hoses from container valves��
Fit anti-recoil caps onto container valves��
Remove containers from bracketing and weigh
containers�� Any container showing more than the
maximum allowable weight loss must be recharged
by a qualified recharge agent��
Record weight of container on record tag��
Replace containers in bracketing and remove anti-
recoil caps��
Reconnect discharge piping / discharge hoses and all
control heads, pressure actuators, pressure actuation
pipe or tubing and flexible electric connectors��
Using the Liquid Level Measuring Device
The liquid level measuring device is used to determine
the liquid FM-200
®
level in 106, 147, 180 and 343 litre
container assemblies�� During a maintenance examination,
the measuring device will enable a service representative
to convert a linear measurement to agent weight in
order to determine if the tank has any weight loss�� This
measurement is accomplished without removing the FM-
200
®
tank from the fire suppression system��
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74
SECTION 8 - MAINTENANCE
FM-200® (UL/FM)
14A-07H
02
2010-03
