HEROSE 093 Series, Руководство по эксплуатации

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Operating instructions
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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 gate valves are
given in the table below and are based on the national standards of the country of manufacture.
Inspection and maintenance intervals
Recommended intervals
Description Interval Scope
Inspection

During start-up 
Visual inspection

of the gate valve for damage;

of the valving marking for
legibility;

Installation position;

Leak-tightness

at the packing gland;

between bonnet and body;

of the valve seat;

Test the opening and closing
functions of the gate valve.
Functional testing

Annually 
Test the opening and closing
functions of the gate valve including
a visual inspection.
External inspection

Every 2 years 
Function and tightness test
including visual check.
Internal inspection

Every 5 years 
Replacement of all sealing
elements, including a function and
tightness test as well as a visual
inspection.
Hydraulic test

Every 10 years 
Replacement of all sealing
elements, including a function, leak
and pressure test as well as an
inspection.