BINDER VD 23 - Manual (Page 24)

VDL (E2.1) 04/2014 page 24/107
2.1 Safety equipment
• Pressure control device
The VDL vacuum drying oven is equipped with a pressure control device with atmospheric pressure
compensation and has a set switch point of 125 ± 25 mbar / 3.69 ± 0.74 inHg). In the event of malfunc-
tion, some procedures would become an ignition source. Due to monitoring by the pressure control de-
vice such actions will only initiate if the pressure in the drying chamber is not higher than 125 ± 25
mbar / 3.69 ± 0.74 inHg.
The heating is released when a vacuum of 125 ± 25 mbar / 3.69 ± 0.74 inHg) or below is
obtained. It will activate only then.
• Safety device class 2
This safety device protects the VDL vacuum drying oven, its environment and the charging material
against impermissible excess temperatures. When correctly set to the maximum permissible drying
temperature it prevents exceeding the maximum drying temperature in case of a fault (chap. 12).
• Sweeping the area for electrical equipment and the preheating chamber with compressed air
The area for electrical equipment and the preheating chamber are protected against explosion by a
technical ventilation system, which reliably prevents the penetration of explosive atmosphere to electri-
cal or electronic parts of the VDL safety vacuum drying oven (protection against solvent-containing
ambient air).
• Flame protection gasket
In case of an explosion, the flame protection gasket prevents any flames from emerging directly
through the door gap..
• Spring-mounted safety glass panel and splinter protection
The VDL vacuum drying oven is equipped with a
large-surface area safety valve.
The inspection window, consisting of ESG glass
(toughened safety glass), is spring-mounted and
serves as a safety valve in the event of explosion.
The additional plastic panel provides splinter-
protection.
Figure 3: Safety glass panel