PDC Machines have provided us 2 unit of hydrogen Diaphragm Compressor model number: PDC-13-500-500, that are currently operating continuously for 18,000 hrs which is equivalent almost two years. The machine has been running 24 hours/day and 365 days/year to recycle the hydrogen to our hydrogenation unit.

As far as our maintenance concern, we only are having trouble during commissioning since a lot of dust/rut passing through the pipe. Once it is resolve through proper filtering, the compressor runs smoothly without having any problem. The latest maintenance activity was replacing the drive belt due to belt worn out in June 2003. As for the diaphragm, we have not replace the diaphragms since year 2001.