Dear Sir,
We have a Penlon AV-600 which have worked in good perform for many year.Unfortunately,it seem to have a leakage of drive gas at the exhaust port.we think the valve is malfunction,but we have not any document about it.Would you like to give us some suggestion or related service manual kindly?
We should be grateful if we can receive your reply!
Best regard,
huta
htdocument@126.com