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 TM 3-4240-284-20&P
2-7. FUNCTIONAL TEST (CONT).
INDICATION/REMARKS
ACTION
ITEM
LOCATION
Close shelter door and protective
entrance door.
Main fan must start and run.
Set POWER switch (14) to ON.
Pressure circuit
Compartment
Control
MASK indicator light (9) will flaeh.
Module
Warning horn(10) will sound until
shelter is pressurized (approxi-
mately 30 seconds).
MASK light (9) will go off and
Allow horn to silence automati-
Warning horn (10) will silence. when
cally. This will indicate proper sys-
tem operation.
Propper shelter pressure is reached.
ENTRANCE LOW PRESSURE
light (11) will light twhen filter until is
started and then go off when pro-
per protective entrance pressure is
reached.
When loss of power to the collec-
tive protection equipment occurs
with the compartment control
module POWER switch in the ON
position, the MASK light (9) will
flash and warning horn (10) will
sound.
MASK light (9) will flash.
open shelter door.
warning horn (lo) will eoundo
Button will stay in pressed positbn.
Press HORN OFF button (20).
Warning horn willstop sounding
MASK light (9) will light and etay
on.
2-6
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