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CB / CB-UL, CBF / CBF-UL (E7) 07/2021 Page 139/197
When operating a chamber with silicon access ports, both silicon plugs must tightly close the access ports.
If the plugs are inserted in a not-gastight manner, or if plugs are missing, CO
2
/ O
2
/ N
2
gas (chamber with
O
2
control) may escape into the environment. The CO
2
control and the O
2
control (chamber with O
2
control)
only turn off when the chamber door is opened.
DANGER
Danger of suffocation and poisoning by high concentration of CO
2
(> 4 Vol.-%).
Death by suffocation.
Tightly close each access port with two plugs during operation.
DANGER
Danger of fire and explosion through contact of combustible materials with O
2
with high concentration of O
2
(> 21 % O
2
).
Serious injury or death from burns and / or explosion pressure.
Tightly close each access port with two plugs during operation.
18.3 Quick sample access (option)
The quick sample access option provides easy access to the sample chamber through a small window in
the glass inner door. This is a useful feature in applications with short incubation times. The window
measures 13 x 25 cm and is located in the bottom corner of the glass inner door.
This quick method of accessing samples is available for both the standard door hinge on the right and the
door hinge on the left.
Figure 31: Glass door (detail, example door hinge on the right) with Quick sample access option
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