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UN-INTERUPTED POWER SUPPLY (UPS)
If required a UPS, or maintained, supply can be incorporated into an installation through the IEC panel
plug on the case. When the mains supply fails this will provide power to the electronic circuits and pump
(not to the fluid heater) to ensure that for 1 hour after a mains power failure the Smoke Screen can
provide a full smoke activation. Enabling the UPS monitoring
system is described in the “Programming”
section. If the UPS supply fails the Smoke Screen operates normally when a mains supply is available.
Mains Power Loss
(No UPS connected)
. When mains power is restored after a temporary power loss
the Smoke Screen will be automatically disabled for 60 seconds to allow the Hold-off PIR to stabilise
and prevent the Smoke Screen from firing in the event of a false panel alarm.
TAMPER
There are 3 tamper circuits on the Smoke Screen, one on each cover (front and fluid) and an
external tamper input on PCB. The external tamper input can be disabled if not in use by placing a
jumper on the pins marked on the photograph in the “Circuit Board Layout” section. A tamper
‘open’ state does not prevent the Smoke Screen from activating.
FLUID MANAGEMENT
Fluid capacity.
The Smoke Screen can be fitted with a 500ml t
ransparent bag containing ‘Smoke
F
luid’.
Fluid monitoring.
The Fluid Level is monitored using an on-board timer that measures the amount of
fluid used by timing consumption when the Smoke Screen is activated. Each time the bag clamp is
unfastened and the fluid bag is replaced the micro switch is cycled which resets the timer and the
Smoke Screen will calculate this as a new fluid bag.
Changing a fluid bag:
Ensure that power is applied to the Smoke Screen. Open the fluid access
panel in the top of the Smoke Screen. Unscrew the bladder neck holder retaining screw and the
bag support screw. Push the fluid
probe into the “out” position in the bag neck (1). Place the other
end of the bag onto the support and insert the retaining screw.
Carefully locate the bag neck in the correct position in the cradle (1 & 2). Close the retaining gate
and insert the retaining screw (3). Ensure the bag neck is held correctly and the fluid micro switch
is activated properly.
ALWAYS REPLACE A FULL FLUID BAG EVERY TIME THE FLUID BAG HOLDER MICRO
SWITCH IS RESET. FAILURE TO DO SO MAY RESULT IN DAMAGE TO THE SMOKE FLUID
PUMP.
WHEN A NEW FLUID BAG IS FITTED POWER MUST BE APPLIED TO THE SMOKE SCREEN TO
RESET THE FLUID TIMER.
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Summary of Contents for SENTINEL S30
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