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6
Operation
Before start-up, compare all the details relating to material, pressure, temperature and installation
position with the layout plan for the pipeline system.
Remove any dirt and residues from the pipelines and valves in order to prevent leaks.
Check the following points prior to start-up:
All assembly and installation work is completed.
The operating position of the valve is correct.
The blocking bushing was removed prior to start-up.
The safety guards are in place.
7
Maintenance and service
7.1
Safety during cleaning
Take note of the specifications in the safety data sheet and the general occupational health and
safety rules if degreasers are used for process-related reasons for the cleaning of bearing parts,
fittings and other precision parts.
7.2
Maintenance
The maintenance intervals must be defined by the user according to the operating conditions.
The recommendations for the functional checking of the valves are to be taken from section 7.2.1
"Inspection and maintenance intervals" in these operating instructions.
7.2.1
Inspection and maintenance intervals
Inspection
Correspondence to
design drawing,
specifications,
type approval,
marking,
Suitability
(medium, size, temperature,
pressure, setting)
Visual inspection
of the valve for damage
of the marking for legibility
Correspondence of the
technical data for the valve to
the documentation
Leak-tightness
between bonnet and lower
part
of the valve seat
at the gland packing
Opening and closing of the
valve
Static pressure test with clean
water or another suitable liquid
Visual examination of the plant
components for cracks,
inadmissible changes in shape
or leaks
30
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Operating instructions
During
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10 years
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