METHOD FOR PROTECTING A PNEUMATIC CONTROL SYSTEM FROM INGESTED CONTAMINATION

摘要

A pneumatic control system (100) including at least one flow control line (140a, 140b, 140c) having a connecting line (142) connectable to a fluid line (20a, 20b, 20c) of a pneumatically operated machine (18), a vacuum line (146) connectable to a vacuum source (32), a vacuum valve (144) controlling flow between the connecting line (142) and the vacuum line (146), a pressure line (106) connectable to a source of fluid under pressure (34), and a pressure valve (50) controlling flow between the connecting line (142) and the pressure line (106). A pressure manifold (102) defines the pressure line (106) and a first portion of the connection line, and supports the pressure valve (50), and a vacuum manifold (104) defines the vacuum line (146) and a second portion of the connecting line, and supports the vacuum valve (144). The vacuum manifold (104) is adapted for replacement independently of the pressure manifold (102).