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3 - 10 Operation
b) Close the Pilot Gas Supply Valve.
c) Open the Pilot Gas Filter's Bleed Valve. Allow pi-
lot gas system to depressurize through the Pilot
Gas Filter’s Bleed Valve. When pilot gas pres-
sure is sufficiently reduced, the Purge Exhaust
Switching Valves will automatically open to de-
pressurize dryer through Purge Exhaust Muffler.
d) SLOWLY open customer supplied depressuriza-
tion valve to vent the dryer internal air pressure.
e) When all dryer pressure gauges indicate zero
pressure, close the depressurization valve. De-
pressurization is complete.