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VDL (E3.1) 10/2020 Page 29/196
• Bypassing or changing protective systems, operation of the chamber without the designated protective
systems
• Establishing or disconnecting an electrical connection in the presence of an explosive atmosphere
• Non-observance of messages regarding cleaning and disinfection of the chamber.
• Wiping the chamber with a dry cloth, generating static charge
• Spilling water or cleaning agent on the chamber, water penetrating into the chamber during operation,
cleaning or maintenance.
• Cleaning activity while the chamber is turned on.
• Operation of the chamber with a damaged housing or damaged power cord
• Continued operation of the chamber during an obvious malfunction
• Insertion of objects, particularly metallic objects, in louvers or other openings or slots on the chamber
• Human error (e.g. insufficient experience, qualification, stress, exhaustion, laziness)
To prevent these and other risks from incorrect operation, the operator shall issue operating instructions
(chap. 2.3). The operator is also recommended to create Standard Operating Procedures (SOPs) (chap.
2.6, certain example avoidance measures are provided here).
Explosion hazard due to
formation of explosive
atmosphere in the pres-
ence of hot surfaces
during air supply
Serious injury or death
from burns and / or explo-
sion pressure.
Observe the safety instructions in the operating
manual and follow the instructions for correct air
supply (breaking the vacuum).
The “Manual ventilation” plug (7) must not be re-
moved while the drying process is still running. If
the drying process has not been completed, the
interior of the chamber must have cooled down
sufficiently before air supply and opening the
door.
Normal operation with
high concentration of in-
ert gas
Danger of suffocation.
Death by suffocation.
On the chamber side, gassing with inert gas is
automatically interrupted when the ambient pres-
sure is reached.
Observe the warnings in the Operating Manual
and follow the instructions for installation, tech-
nical ventilation measures, and decommission-
ing.
Respect the relevant regulations for handling in-
ert gas.
Explosion hazard due to
mechanical spark for-
mation in an explosive
atmosphere by inserting
or removing the slide-in
modules in the pres-
ence of an explosive at-
mosphere
Serious injury or death
from burns and / or explo-
sion pressure.
Observe the warnings in the Operating Manual
and follow the instructions for inserting or remov-
ing the expansion racks.
Explosion hazard due to
mechanical formation in
an explosive atmos-
phere due to rust
Serious injury or death
from burns and / or explo-
sion pressure.
Observe the warnings in the operating instruc-
tions and follow the instructions for checking the
chamber and expansion racks for corrosion.
Do not use corroded components. Never allow
rust to permeate into the chamber.
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