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Operating instructions
7
Maintenance and service
7.1
Safety during cleaning
Take note of the specifications in the safety data sheet, the general occupational health and
safety rules and the HEROSE information sheet "Use with oxygen" if degreasers are used for
process-related reasons for the cleaning of bearing parts, unions and other precision parts.
7.2
Maintenance
The maintenance and inspection intervals must be defined by the operating company according to
the operating conditions and the national regulations.
The manufacturer's general recommendations for the maintenance and inspection of the valve are
given in the table below and are based on the national standards of the country of manufacture.
Inspection and maintenance intervals
Description
Inspection
Functional
testing
External
inspection
Internal
inspection
Strength test
22
Recommended intervals
Interval
During start-up
Inspection and maintenance
in accordance with the re-
spective legal regulations.
In Germany, for example,
according to the Operational
Safety Ordinance.
Inspection and maintenance
in accordance with the re-
spective legal regulations.
In Germany, for example,
according to the Operational
Safety Ordinance.
Every 5 years or ≥ 500 load-
ing cycles
Every 10 years
Phone +49 4531 509-0
Scope
Visual inspection
of the valve for damage
of the valving marking for legibility
Leak-tightness
at the packing gland
between body I and body II
of the valve seat
at the ends of the body
at the plug screw
Test the opening and closing functions of the valve.
Test the opening and closing functions of the valve
including a visual inspection.
Function and tightness test including visual
inspection.
Replacement of all sealing elements, including
a function and tightness test as well as a visual
inspection.
Replacement of all sealing elements, including a
function and tightness test as well as an inspection.
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