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VDL (E3.1) 10/2020 Page 50/196
NOTICE
Danger by stacking.
Damage to the chambers.
∅ Do NOT place vacuum drying ovens on top of each other.
Permissible areas
The VDL vacuum drying oven may be installed in areas in which explosive atmospheres may occur on a
rare and temporary basis. The entire chamber with the exception of the power plug is classified in category
3 in relation to the environment. The chamber plug (power plug) is unprotected, therefore the electrical
connection must be established outside a zone. With optional analog output: The plug connection of the
analog output is unprotected and must therefore be established outside a zone.
VDL vacuum drying ovens are not intended for installation in a Zone 1 or 0. The chamber must not be
installed or operated in an occasionally or continuously / for long periods / frequently potentially explosive
area. Measures must be taken to prevent the spread of explosive atmospheres to unprotected areas.
Spreading of an explosive atmosphere to the unprotected areas must be reliably prevented. Observe the
information on zone classification (chap. 3.5).
Observe the instructions on extraction (technical ventilation, chap. 5.2.2). When installed as intended, there
is no Zone 1 or 0 in the vicinity of the chamber.
DANGER
Explosion hazard by penetration of an explosive atmosphere to unprotected areas.
Serious injury or death from burns and / or explosion pressure.
∅ Do NOT operate the chamber in occasionally or continuously / for long periods / fre-
quently potentially explosive areas. It is not intended for installation in a zone 1 or 0.
Make sure that there are NO combustible dusts in the vicinity of the chamber
Make sure that air-solvent mixtures are NOT occasionally or continuously / for long pe-
riods / frequently in the vicinity of the chamber.
Strictly observe the relevant legal regulations about how to select an appropriate loca-
tion.
The operator is responsible for the correct installation of the pump or other equipment (zone classification).
Sufficient extraction (technical ventilation, chap. 5.2.2) also in the event of an error (e.g. damage / overfilling
the condensate catchpot of the pump, or spilling or dropping containers or material to be loaded with sol-
vents) must be provided.
The operator is responsible to use suitable pumps for pumping from zone 0 or 1.
Follow country-specific regulations for explosion protection.
If you ordered the optional pump module with chemical membrane pump, the vacuum pump will be deliv-
ered in a separate box and must be fitted into the module and connected at the place of installation (chap.
6.5.3).
Electrical connection
To completely separate the chamber from the power supply, you must disconnect the power plug. Install
the chamber in a way that the power plug is easily accessible and can be easily pulled in case of danger.
It is also possible to use a customer’s explosion-protected emergency stop switch or a comparable power
disconnector.
The chamber plug (power plug) is unprotected because it must be disconnected in case of an emergency
to completely separate the chamber from the power supply. therefore, the electrical connection must be
established outside a zone.
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