Gardner Denver Reavell 5236, Руководство по эксплуатации и техническому обслуживанию

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P a g e | 9
General Safety Information
En,v12.0
9 PURGING INSTRUCTIONS FOR GAS INSTALLATIONS
Before any attempt is made to run the compressor on process gas, the operator must be
satisfied that the compressor and its associated pipework is purged free of air and that they are
fully conversant with the operating procedures of the equipment.
If in any doubt as to efficiency of the purging, always repeat the procedure.
When the gas being compressed is flammable, or its purity is important, it must be a plant requirement
to purge the compressor to remove any air in it before letting the process gas into the system. The
compressor should be purged free of air, in accordance with purging procedures which apply to the
whole plant using the inert gas specified, after the compressor has been commissioned on air and
before the process gas is introduced into the system.
The installation should have purging valves fitted to the inlet and outlet lines of the compressor,
permitting the inert gas used for purging to be admitted and discharged before and after the equipment
being purged.
Once this has been acheived the valves should be locked and /or plugged to avoid them being left
open whilst running on gas.
Operators should also be aware that the compressor is not guaranteed leak tight whether in normal
operation or under fault conditions and It is assumed that the compressor is situated in a well ventilated
area with suitable gas leakage detection equipment to minimise possible risks.
Due to the unknown nature of the plant processes involved, Gardner Denver cannot be held
responsible for any heath risk arising from leakage of gas into the atmosphere.
The following comments may help to achieve successful purging of the compressor:-
The use of an Oxygen meter is recommended when purging prior to running on flammable gases.
Feeding the purge gas at pressure (maximum 0.5 bar g) will speed up procedure.
The crankcase will be purged more quickly if the oil filler cap is removed and the rod inside is
depressed to allow the air to escape.
The pipes from the separators to the unloader valves and from the first stage to unloaders (and water
valve if fitted) can be purged by disconnecting them at their far end, allowing the purge gas to pass
through and remove the air,
before reconnecting them.
After any maintenance or repairs have been carried out which involves dismantling and opening up gas
containing parts, the system must always be re-purged.