User`s guide

PUREGAS, LLC P550W Series Air Dryers User’s Guide
Page 69 of 99 P011658 – Rev. M
9.12 Testing Humidity Alarm and System Shutdown
CAUTION: Be careful when removing Air hose. System is pressurized.
9.12.1 Power the air Dryer OFF.
9.12.2 Depressurize air Dryer (see section 8.3.1 )
9.12.3 Unscrew and remove the
Humidity Sensor from the
Humidity Block.
9.12.4 Power the air Dryer ON.