TROUBLE SHOOTING GUIDE
TROUBLE SHOOTING PHL, PHI, AND PHE DRYERS
FAILURE TO SHIFT LIGHT ON:
DRYING TOWER LOW PRESSURE UNDER 70PSI
NO AIR COMING INTO DRYER
INLET VALVE NOT OPENING
AIR ON TO INLET VALVE (VALVE CLOSES WITH AIR ON) AQUAMATIC VALVES ONLY
PURGE VALVE STUCK OPEN
REPRESSUEAZION VALVE DID NOT OPEN IF UNIT IS EQUIPPED WITH ONE
PRESSURE SWITCH DID NOT CLOSE
NO POWER FROM CONTROL BOARD TO PRESSURE SWITCH
REGENERATING TOWER HIGH PRESSURE OVER 40PSI
MUFFLER STOPPED UP
PURGE VALVE NOT OPENING
NO SIGNAL FROM CONTROL PANEL FOR PURGE VALVE TO OPEN
REPRESSUEAZION VALVE DID NOT CLOSE IF UNIT IS EQUIPPED WITH ONE
AIR ON TO PURGE VALVE (VALVE CLOSES WITH AIR ON) AQUAMATIC VALVES ONLY
PRESSURE SWITCH DID NOT CLOSE
NO POWER FROM CONTROL BOARD TO PRESSURE SWITCH
INLET VALVE NOT CLOSING OR LEAKING
OUTLET CHECK VALVE OR ACTUATED VALVE LEAKING
PURGE CHECK VALVE LEAKING
DEPRESSURIZATION VALVE DID NOT OPEN (IF DRYER IS EQUIPPED WITH THEM)
AIR IS ON AND GOING THROUGH CONTROL AIR FILTER
GENERAL ITEMS TO CHECK
PURGE ADJUSTMENT VALVE SET TO 40-45 PSI
MINIMUM INLET PRESSURE 75PSI