MCR
P
ROSMOKE
FS
O
PERATION AND
M
AINTENANCE
M
ANUAL
Page 6 of 20
Note
: Observe the minimum and maximum spring compression values. The distance
between the casing and the ceiling is approximate.
Fig. 5. The maximum and minimum distance between the casing and the ceiling and the minimum spring
compression
4. OPERATING PRINCIPLE OF mcr PROSMOKE FS
CURTAINS
When in standby mode, mcr
PROSMOKE FS
rolling curtains are hidden in casings. In
case of fire, they automatically roll out to the predetermined height.
In order to function properly, a
mcr PROSMOKE FS
rolling curtain must be connected
to a mcr 9705-5A or mcr 0204 smoke vent control unit. In order to keep the
mcr
PROSMOKE FS
curtain rolled up, a non-interrupted power supply from the mcr 9705 or mcr
0204 smoke vent control unit is required. If the power supply from the control unit to the
curtain is interrupted for one of the following reasons:
alarm signal,
disconnection or power shortage (including burning out in case of fire) of the
circuit connecting the mcr 9705 or mcr 0204 control unit with the MECU XL
motor control system,
failure of 230 V~ power supply to the mcr 9705 or mcr 0204 and discharged
control unit batteries
– the brake is released and the curtain fabric drops down
in a controlled manner to the required height (until it is fully rolled out).
The mcr 9705-5A control unit interacting with the curtain should be set to the door
control mode, while the mcr 0204 control unit should be set to the curtain mode.
After the mcr 9705 or mcr 0204 control unit is returned to the standby mode, the
curtain fabric rolls up using a 230 V motor. The fabric rolls up until it reaches the height set
by the motor limit switch. When it does, the curtain goes into the mode of keeping the fabric
rolled up.
mi
n
. spri
n
g c
o
mp
ress
io
n
a
p
p
ro
x. 10
mi
n
. a
p
p
ro
x. 75
ma
x. a
p
p
ro
x. 140
ma
x. sp
rin
g c
o
mp
res
sion
a
p
p
ro
x. 75
