Wilkerson DE5 - Manual (Page 13)

Instruction Manual / DE3, DE4 and DE5
Wilkerson Compact Heatless Air Dryers
MODELS DE3, DE4 AND DE5 TROUBLESHOOTING GUIDE
D PROBLEM: ALARM WILL NOT CLEAR
POSSIBLE CAUSE CHECK CORRECTIVE ACTION
D1 Wet air condition not corrected. See Section "A" of
Troubleshooting Guide.
D2 Sensor not dried out. Allow several minutes for To speed up alarm clearing,
sensor to dry out after correcting bleed some air through tire valve
dryer problem. Alarm should clear. at bottom of sensor housing.
Alarm should clear in less than
than 60 seconds.
D3 Bad humidistat board. Disconnect humidity cable from Replace humidistat board.
sensor. Alarm should clear.