Note On The Use Of A Flame Arrester - Binder VDL Series Operating Manual

Extracted vapors or the occasionally used inert gas can endanger health and / or have a corrosive effect
on the oven and pump.
Danger of damage to health by release of extracted vapors.
Corrosion on the chamber and the pump. Damage to health.
 Remove the extracted vapors and/or inert gas via a suitable conduit from the pump
module into e.g., a fume extractor facility.
 Directly connect the conduit to the corresponding pump outlets.
You can connect a laboratory cooling system to the emission condenser of the vacuum pump
VP4.
To operate the chemical membrane pumps VP4 (MZ2C EX) please refer to the enclosed
pump manufacturer's operating manual.
Confirm that the vacuum source is designed for a gas inlet temperature corresponding to the
used drying temperature, or take appropriate measures to cool down the extracted vapor be-
fore its entry into the vacuum source.
The ATEX Directive 2014/34/EU compliant vacuum pump offered by BINDER is designed for a gas
inlet temperature of 40 °C / 104 °F max. Do NOT exceed this temperature. If the gas inlet temperature
is too high and then becomes even warmer by compression in the pump, the resulting temperature (of the
gas-solvent mixture inside the pump) could exceed the solvent's temperature class and auto-ignition tem-
perature .
The maximum permissible ambient temperature of the vacuum pump supplied by BINDER is 40 °C /
104 °F.

6.5.4 Note on the use of a flame arrester

A flame arrester is not mandatory for VDL applications (TRBS 2152-4:2012). A pump designed for Zone 1
is equipped with a temperature sensor on the bearing which, in the event of a fault, causes the pump to
shut down immediately.
In general: In case of a risk of ignition before or after the vacuum pump, the operator must provide suita-
ble flame arresters in accordance with EN 12874. The suitability (chemical resistance, sufficient flow and
safety against clogging) must be ensured before commissioning.
VDL (E3.1) 06/2020
WARNING
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