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VDL (E3.1) 10/2020 Page 56/196
Fixation on the chamber rear:
• Guide the tube (b) through the cable connector (f) and
push the bracket (e) with the pressure regulator with
its lower two holes onto the two bolts (i) on the rear of
the chamber
• Screw the two nuts (g) onto the bolts (i) and tighten
them
• Tighten the nut of the cable connector (f) which points
to the chamber clockwise with a tool so that it can no
longer be loosened by hand
6.3 Connecting compressed air supply for sweeping the area for electrical
equipment, the preheating chamber, and the controller housing
The compressed air flows through the area for electrical equipment, the preheating chamber, and the con-
troller housing, which prevents a possible concentration of a solvent-containing atmosphere in the presence
of live electrical components and the hot heater surface.
Use only dry compressed air.
In order to avoid that any oil coming from the compressed-air piping
enters the vacuum drying oven, the compressor of the compressed
air system must be equipped with an oil separator, or the com-
pressed air system must be constructed oil-free.
Connection:
Before commissioning, the pressure regulator on the chamber rear
must be connected to a compressed air line (compressed air net-
work).
Connection: Plug connector for DL quick coupling NW5
An inlet pressure of 2 bar must be provided for the compressed air
sweeping. The compressed air supply line provided by the operator
must be equipped with monitoring which clearly indicates a drop
and increase in the inlet pressure outside the permissible tolerance
of ± 0.2 bar.
Figure 12: Compressed air connec-
tion on the pressure regulator
If solvent-containing air penetrates the electrical areas of the chamber or the preheating chamber, explo-
sions may result.
(f)
(g)
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