BERTHOLD TECHNOLOGIES LB 444 - Shieldings with Pneumatically Operated Lock and Shutter Switch; Figure 4: Shielding Container Type LB 744 X with Pneumatic Locking Drive

04/03 347 LB 444
7
3.2.2 Shieldings with Pneumatically Operated Lock and
Shutter Switch
NOTE: Option not available in the USA.
A pneumatic lock with switch contacts indicating the position of the lock is available as a
special version.
The pressurized air moves the shutter to the OPEN position. If the pressurized air is
turned off or in case of failure the moveable shutter is turned back to the CLOSED posi-
tion by the spiral spring.
Pressurized air
:
min. 4*10
5
Pa (4 kp/cm
2
)
max. 7*10
5
Pa (7 kp/cm
2
)
Shutter switch
:
IP 65
max. 250 V,
40 VA, 1 A
Air quality
clean, as usual for pressurized
air tools, oil free
Temperature range:
-5 to + 60°C
CAUTION-
RADIOACTIVE
MATERIAL
Throttle
valve
Pressurized air
connection
Spring unit
Drive
Shutter
switch
Figure 4: Shielding container type LB 744x with pneumatic locking drive
Do not open spring unit. DANGER!
The pneumatic drive is equipped with a throttle valve. The valve must be set
such that the shielding’s opening and closing process takes at least 2 s; other-
wise the shielding may get damaged!