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Safety valves
1 All adjustments or repairs are to be done by an
authorized representative of the valve supplier.
2 Only trained and technically competent personnel
should consider overhaul, re-set or performance
testing of safety valves.
3 The safety valve is supplied with either a lead
security seal or crimped cover to deter
unauthorised access to the pressure regulation
device.
4 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.
5 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.
6 Safety valves must be frequently tested and
regularly maintained.
7 The set pressure should be periodically checked
for accuracy.
8 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.
9 The frequency of tests is influenced by factors
such as the severity of the operating environment
and aggressiveness of the pressurised medium.
10 Soft seals and springs should be replaced as part
of the maintenance procedure.
11 Do not paint or coat the installed safety valve.
Selective catalytic reduction
The SCR catalytic converter contains vanadium
pentoxide, a chemical known to the State of
California to cause cancer.
The SCR catalytic converter is fitted in the silencer
and does not constitute a health hazard during normal
use and handling.
When carrying out work on the SCR catalytic
converter which may result in exposure to dust, safety
precautions must be taken. Such work includes, for
example, opening the silencer machining and
scrapping the SCR catalytic converter.
Safety precautions when working on the SCR
system
Inhalation: If dust is inhaled, the person should be
provided with fresh air immediately. Seek medical
attention.
Eye contact: Rinse eyes with water immediately.
If irritation persists, seek medical attention.
Skin contact: Wash with water and soap. Remove
contaminated clothes.
Ingestion: If large amounts have been ingested,
drink plenty of water and induce vomiting. Seek
medical attention.
Environmental hazards
Vanadium pentoxide is toxic to water organisms
and can cause detrimental long term effects to
water environment.
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