BINDER VD 23 - Manual (Page 33)

VDL (E2.1) 04/2014 page 33/107
When placing several units of the same size side by side, maintain a minimum distance of 250 mm / 9.8 in
between each unit. Wall distances: rear 100 mm / 3.9 in, sides 135 mm / 5.3 in. Spacing above and be-
hind the unit of at least 100 mm / 3.9 in must also be maintained.
CAUTION
Danger by stacking.
Damage to the units.
∅
Do NOT place vacuum drying ovens on top of each other.
To completely separate the unit from the power supply, you must disconnect the power plug. Install the
unit in a way that the power plug is easily accessible and can be easily pulled in case of danger.
Do not install or operate the vacuum drying oven VDL in potentially explosive areas.
DANGER
Explosion hazard.
Danger of death.
∅
Do NOT operate the unit in potentially explosive areas.
 KEEP explosive dust or air-solvent mixtures AWAY from the vicinity of the unit.
If no pumps are used for pumping from zone 0 or zone 1, we recommend an explosion-preventing decou-
pling (explosion barrier, flame arrester, flame flash-through barrier acc. to EN 12874) between the inner
chamber and the vacuum pump. For installing a flame arrester, please contact the BINDER INDIVIDUAL
team.
Follow country-specific regulations for explosion protection.
Before commissioning the unit, connect the vacuum drying oven to the compressed air supply.
Without the necessary compressed air connection, the unit will not have a current to operate.
If you ordered the option “vacuum module with chemical membrane pump”, the pump will be delivered in a
separate box and must be fitted into the module and connected at the place of installation (chap. 15.3).
During operation a fire extinguisher must be available.
The maximum permissible ambient temperature of the vacuum pumps delivered by BINDER is 40 °C /
104°F.
Notes when using inert gas:
When operating the VDL safety vacuum drying oven with inert gas, correctly follow the technical ventila-
tion measures, as described in the guideline BGI/GUV-I 850-0 on safe working in laboratories (formerly
BGR/GUV-R 120 or ZH 1/119 laboratory guidelines issued by the employers’ liability insurance associa-
tion) (for Germany).
During operation with inert gas, the unit is supplied with an oxygen displacing gas (e.g. N
2
). Inert gases in
high concentrations are hazardous to health. They are colorless and almost odorless and therefore practi-
cally imperceptible. Inhalation of inert gases can cause drowsiness up to respiratory arrest. When the O
2
content of the air decreases below 18%, there is risk of death from lack of oxygen. Any gas that might
escape has to be led out via good room ventilation or a suitable exhaust system.