ETI NETCOM ADH NEMA Assembly Replacement Procedure page 3

HUMIDITY SENSOR ASSEMBLY REMOVAL AND
REPLACEMENT
To replace the Humidity Sensor Assembly (23368) in either an
ADH NETCOM Automatic Air Dehydrator with AC power or an
ADH NETCOM with Redundant DC power, perform the steps
below. Refer to Figure 1a or 1b, respectively, for AC and DC unit
illustrations.
1. Shut off machine power by unplugging the unit.
2. Open the two front door latches, loosen the two captive
screws in the corners of the housing opposite the hinges,
then open the NEMA box. Place an object underneath the
door once open to help support it during this procedure.
3. Remove the orange Ethernet cable on the left by
disconnecting both ends, then removing it. Set aside for
re-use. Remove the power cable connector on the right by
loosening the captive screw on each end of the green
connector, then unplugging the connector. Disconnect the
ground wire by loosening the ground wire retaining screw,
then carefully removing the ground wire. Refer to Figure 1.
Disconnect both ends, then remove
orange Ethernet cable.
Loosen both captive
screws, then disconnect
connector.
Figure 1. DISCONNECTING THE ETHERNET CABLE,
THE POWER CABLE CONNECTOR, AND THE GROUND WIRE.
MODEL ADH NEMA
Loosen screw, then remove
ground wire.
3
4. Remove and retain the four mounting screws from the
four corners of the protective front cover, then slowly lift
the front cover, carefully flip it over, then set it down,
upside down, to rest on the inside of the enclosure door.
Be careful as there are still many wires connected
between the enclosure and the front cover and there isn't
a lot of slack. Note that the two upper front cover
mounting screws are located in plain sight in the top
corners of the front cover, while the two lower front cover
corner mounting screws are located down in the front
"well" of the unit. Use a long-handled screwdriver to
remove them.
5. For greater access during this procedure, disconnect the
"Y" hose assembly at the point of the outlet port as shown
in Figure 2.
Disconnect the "Y" hose
assembly here.
Figure 2. "Y" HOSE ASSEMBLY DISCONNECT POINT.
6. Disconnect the humidity sensor terminal block from the
electrical connector by loosening the captive screw at
either end of the connector then disconnecting the
terminal block. Refer to Figure 3.
Humidity Sensor Assembly
Humidity sensor
electrical connector
Figure 3. THE ADH NETCOM AC NEMA AUTOMATIC AIR
DEHYDRATOR HUMIDITY SENSOR ASSEMBLY AND ELECTRICAL CONNECTOR.
HUMIDITY SENSOR ASSEMBLY REPLACEMENT PROCEDURE | PART NO.
HUMIDITY SENSOR ASSEMBLY
REPLACEMENT PROCEDURE
Humidity Sensor Assembly
24105 REV B.0