Table of Contents
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1.
General
information
All persons involved with the assembly, operation and/or maintenance of safety shut-off valves must read
and understand all of the following documents:
- Technical product information contained in valves and controls information sheets, e.g. 711.00.
- General operating manual for gas pressure regulators and safety devices – this RMG document
contains information on assembly and operation as well as general information on troubleshooting.
- Operating and maintenance instructions / spare parts 672.20 – this document contains more detailed
information on assembly and operation of safety shut-off valves.
- Actuator RMG 672 is an integral component of the safety shut-off valve and is described in this document,
"Operating and maintenance instructions, spare parts".
There are national laws and regulations for all sorts of jobs on gas pressure governors, from planning to
maintenance. Be sure to comply. (In Germany, for instance, DVGW work sheets G 600, G 459/II, G 491
and G 495.)
Inspection and maintenance intervals depend mostly on operating conditions and the nature and properties
of the gas. There are no general rules or recommendations for intervals. For Germany, we recommend to
consider maintenance intervals as stated in DVGW work sheet G 495 in a first instance. However, in the
mid-term, intervals must be adapted to the requirements of each specific equipment.
During maintenance, components must be cleaned and then checked thoroughly. This is necessary even if
there have not been any unusual observations during operation and/or functional testing. Checks must focus,
in particular, on diaphragms and seals and all movable parts and their respective bearings. Any and all
defective parts must be replaced with new ones. The same applies to O rings removed during disassembly.
Item numbers mentioned in the specific operating and maintenance instructions correspond with the
numbers in the spare parts lists and drawings.
Some parts in the lists and drawings are marked with a letter "W". We recommend to always have a reserve of
those parts in stock for maintenance purposes. Those spare parts are put together in another separate list at
the end of the spare parts list.
The following actuators are used with the following equipments. For all, there are corresponding operating
and maintenance instructions:
1.1
Safety information
In this manual, safety information is highlighted by means of the following titles and eye catchers:
Eye catcher
Danger
!
Caution
!
Note
RMG 402
RMG 408
RMG 503 DN 25/50 - DN 150/300
RMG 530
RMG 711
RMG 721
used for:
danger to life and limb
danger of damage to property and/
or the environment
important additional information
402.20
408.20
503.20
530.20
711.20 and 711.21
721.20
672.20 S.03
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