Bentone BG 700, Инструкция по установке и обслуживанию

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16 Bentone BG700M,800M,950M
General
4.1.2 Functional description of gas flow
When the valves V1 and V2 are closed, chamber A is under inlet pressure.
A hole D in the ilter housing connects min. pressure switch with chamber
A. If the inlet pressure applied to the pressure switch exceeds the incoming
reference value, it switches through to the automatic burner control. After
release by the automatic burner control, valves V1 and V2 open. The gas
low through chambers A, B and C of the GasMultiBloc.
4.1.3 Operating method of valve-regulator
combination on valve V1
A regulator, compensating for residual pressure is integrated in valve V1
(pressure regulating part). Armature 7 is not connected to valve plate unit
3. When it opens, armature 8 pretensions compression spring (V1) 5 and
releases the valve plate unit. When the valve closes, the armature acts
directly on the valve plate unit. The output pressure upstream of valve V2 is
deined by pretensioning regulator spring 8 (tension spring) via setting screw
17. The output pressure acts via opening E on the working diaphragm 21
of the regulator part. In regulated state, setting spring inlet pressure and
pressure of working diaphragm are in force equilibrium. The compensating
diaphragm ensures the fast closing function of valve V1 and a high regulating
quality.
4.1.4 Operating method of valve V2
Armature 14 of valve V2 is connected to valve plate unit 12. When it opens,
armature 14 pretensions compression spring 13. The max. valve opening
can be set by limiting the armature stroke by means of the main volume
restrictor 18.
4.1.5 Min. opening (residual stroke) of valve (0.5
to 1.0 mm)
Main volume restrictor 18 is set by rotating the adjusting plate or the
hydraulic brake. The fast and/or slow opening characteristic is inluenced by
setting fast stroke 19 at the hydraulic brake under the cover.
4.1.6 Closing function
When the supply voltage to the solenoid coils of valves V1 and V2 is
interrupted, they are closed within < 1 s by the compression spring
MB-DLE405-412.....B01