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6 Draining of condensate shall be performed daily when
vessel is in use.
7 Installation, design and connections should not be
changed.
8 Bolts of cover and flanges may not be used for extra
fixation.
Safety valves
Operating & Maintenance
Only trained and technically competent personnel should
consider overhaul, re-set or performance testing of safety
valves.
The safety valve is supplied with either a lead security
seal or crimped cover to deter unauthorised access to the
pressure regulation device.
Under no circumstances should the set pressure of the
safety valve be altered to a different pressure than that
stamped on the valve without the permission of the
installation designer.
If the set pressure must be altered then use only correct
parts supplied by Atlas copco and in accordance with the
instructions available for the valve type.
Safety valves must be frequently tested and regularly
maintained.
The set pressure should be periodically checked for
accuracy.
When fitted, the compressors should be operated at
pressures not less than 75% of the set pressure to ensure
free and easy movement of internal parts.
The frequency of tests is influenced by factors such as the
severity of the operating environment and aggressiveness
of the pressurised medium.
Soft seals and springs should be replaced as part of the
maintenance procedure.
Do not paint or coat the installed safety valve (see also
Preventive maintenance schedule).
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