3. Special maintenance Instructions
Pre-formed diaphragm (119, 169, 260)
When fitting the diaphragm be sure to observe the correct mounting position of the loop (see spare parts drawings
of the pilot units on pages S.11, S.13, S.15, S.17)
Diaphragm plate (107, 154, 276)
When tightening the closing cap (103, 167), hexagon nut (123, 280), and union piece (258) the diaphragm plate
should be secured against distorsion by spanner SW 24.
load limiting
pressure gauge
measuring line
start-up
valve
load limiting pressure
set point screw
outlet pressure
set point screw
vent line
inlet pressure
gauge
dosing screw
Pilot RMG 630a
bleed
line
Main Regulator
inlet pressure p
outlet pressure p
e
a
Filter
Fig. 1:
Basic Diagram of Pilot RMG 630 a with a main regulator.
630.20 p.3
- Dosing screw
The dosing screw is delivered with a basic adjustment set by RMG. For reducing the amplification
turn the dosing screw anti-clockwise.
bleed line only for
regulators RMG 502/503
Control
unit
Load limi-
ting unit
