ETI NETCOM ADH Use and care manual

South Bend, Indiana USA | networketi.com ADH INSTRUCTION MANUAL | PART NO.24108 REV B
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NETCOM
®MODEL ADH
AUTOMATIC AIR DEHYDRATOR WITH ETHERNET
ADH® NETCOM™ AUTOMATIC AIR
DEHYDRATOR INLET SOLENOID MODULE
REPLACEMENT PROCEDURE
Replacement Kit Part Number 24096
Document Part Number 24108

SAFETY INFORMATION AND WARNINGS
Abnormal Odor or Smoke
In the event of smoke or a burning or
abnormal odor, immediately interrupt
power to the ADH NETCOM with the
POWER switch at the rear of the unit,
unplug the unit, or turn off the circuit
breaker controlling the outlet. Note
that only the AC model of the ADH
NETCOM has an ON / OFF switch.
Lethal Voltages Present
Lethal voltages are present inside the
ADH NETCOM. Service should be
performed by qualified personnel
only. There are no user serviceable
components inside the chassis.
Pneumatics
Each of the air pumps inside the ADH
NETCOM automatic air dehydrator is
capable of generating as much as 24
psig (1,655mbar). Other attached dry
air sources may be capable of
generating even higher pressures.
Proper safety practice requires
treating all pneumatic components
with care. Always vent the system to
atmospheric pressure before servicing
pneumatic components.
Rack Mounting
Before and after rack mounting the
ADH NETCOM, ensure that the rack
is stable. Mounting of the ADH
NETCOM into a rack should be such
that a hazardous condition is not
created due to uneven mechanical
loading. Verify that adequate air
flow and power source capacity is
available to the unit. Ensure that the
ADH NETCOM maximum operating
temperature of 130°F (55°C) will not
be compromised by other
components in the rack. Ensure
reliable earthing of the ADH
NETCOM.
South Bend, Indiana USA | networketi.com ADH INSTRUCTION MANUAL | PART NO.24108 REV B
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South Bend, Indiana USA | networketi.com ADH INSTRUCTION MANUAL | PART NO.24108 REV B
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ADH NETCOM INLET SOLENOID
MODULE REPLACEMENT
PROCEDURE
This procedure addresses the removal and
replacement of the Inlet Solenoid Module in
an ADH NETCOM Automatic Air
Dehydrator. The first section addresses the
replacement of the Inlet Solenoid Module in
the AC and DC models. The second section,
starting on page 6, addresses the
replacement of the Inlet Solenoid Module in
the ADH NETCOM AC NEMA configuration.
It is recommended to read the entire
procedure prior to beginning work.
INVENTORY LIST
Identify the following items in this kit prior
to beginning work.
TOOLS REQUIRED
The following tools are needed to perform
this procedure:
•5/16” Nut driver
•Phillips screwdriver
•Small flat blade screwdriver
•Tubing wrench or vacuum tube pliers
Item
Number
Part
Number
Item
Quantity
Item
Description
11 23270 1 Solenoid
22 24108 1 Instruction Manual (this document)

South Bend, Indiana USA | networketi.com ADH INSTRUCTION MANUAL | PART NO.24108 REV B
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INLET SOLENOID MODULE REMOVAL
AND REPLACEMENT
To replace the Inlet Solenoid Module
(23270) in either an ADH NETCOM with AC
power or an ADH NETCOM with Redundant
DC power, perform the steps below. DC
Refer to Figure 1. To replace the Inlet
Solenoid Module (23270) in an ADH
NETCOM AC NEMA, proceed to page 6.
Figure 1. THE ADH NETCOM AUTOMATIC
AIR DEHYDRATOR INLET SOLENOID
MODULE AND POWER CONNECTOR.
(Front panel of chassis has been removed
for greater clarity.)
(front wall of chassis)
(Canister 2)
(Canister 1)
1. Shut off machine power by placing
power switch in the OFF (O) position.
With the power switch in the off
position, unplug the power cord. If
possible, move the dehydrator to a
work table.
2. Remove the front top machine panel.
Retain the mounting hardware.
3. Loosen the captive screw at each end
of the green power connector. Refer
to Figure 2. As captive screws, they
cannot be removed. Once the end
screws have been loosened,
disconnect the green power
connector.
Figure 2. THE INLET SOLENOID MODULE
POWER CONNECTOR.
“Captive” end screws
cannot be removed.
4. Using a tubing wrench or vacuum
tube pliers, grab hold of each of the
three air hoses about 1 inch in from
the end, then pull gently to disconnect
the hoses from their fittings. Refer to
Figure 3.
5. Using a 5/16” nut driver, loosen and
remove the nuts and lock washers
securing the existing inlet solenoid
module mounting bracket to the
chassis. Retain mounting hardware
for re-use. With the mounting base
and the three air hoses disconnected,
remove the existing inlet solenoid
module from the machine.

South Bend, Indiana USA | networketi.com ADH INSTRUCTION MANUAL | PART NO.24108 REV B
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Figure 3. DISCONNECTING THE AIR
HOSES.
Position tubing wrench or
hose pliers at these points.
6. Install the new mounting bracket with
the new inlet solenoid module over
the Pem® studs from which the
original module mounting bracket
was removed. Secure the mounting
bracket to the chassis using the two
nuts and lock washers removed in
step 5 and torque to 10 in/lb.
7. Reconnect the three air hoses to the
corresponding fittings on the new
module from which they were
removed from the original module in
step 4. Refer to Figure 4. The top
hose runs to Canister 2. The lower
left hose runs to Canister 1. The
lower right hose runs from the
compressor. Make sure each hose fits
tightly onto the fitting.
Figure 4. THE INLET SOLENOID
MODULE AIR HOSE CONNECTIONS.
From the Compressor
To Canister 2
To Canister 1
8. Connect the green power connector
from the new inlet solenoid module
where the original power connector
had been, then tighten the two captive
end screws to secure it in place.
9. Reinstall the forward top panel using
the hardware removed in step 2.
10. Restore machine power.

South Bend, Indiana USA | networketi.com ADH INSTRUCTION MANUAL | PART NO.24108 REV B
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To replace the Inlet Solenoid Module (23270)
in an ADH NETCOM AC NEMA, perform the
steps below.
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.
Figure 1. DISCONNECTING THE ETHERNET
CABLE,
THE POWER CABLE CONNECTOR, AND
THE GROUND WIRE.
Disconnect
both ends,
then remove
orange
ethernet cable.
Loosen both captive screws,
then disconnect connector.
Loosen
screw,
then
remove
ground
wire.
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. Loosen the captive screw at each end
of the green power connector. Refer to
Figure 2. As captive screws, they
cannot be removed. Once the end
screws have been loosened, disconnect
the green power connector.
Figure 2. THE INLET SOLENOID MODULE
POWER CONNECTOR.
“Captive” end screws
cannot be removed.

South Bend, Indiana USA | networketi.com ADH INSTRUCTION MANUAL | PART NO.24108 REV B
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6. Using a tubing wrench or vacuum tube
pliers, grab hold of each of the three
air hoses about 1 inch in from the end,
then pull gently to disconnect the
hoses from their fittings. Refer to
Figure 3.
7. Using a 5/16” nut driver, loosen and
remove the nuts and lock washers
securing the existing inlet solenoid
module mounting bracket to the
chassis. Retain mounting hardware for
re-use. With the mounting base and
the three air hoses disconnected,
remove the existing inlet solenoid
module from the machine.
Figure 3. DISCONNECTING THE AIR HOSES.
Position tubing wrench or
hose pliers at these
points.
8. Install the new mounting bracket with the
new inlet solenoid module over the Pem®
studs from which the original module
mounting bracket was removed. Secure
the mounting bracket to the chassis
using the two nuts and lock washers
removed in step 7 of this section and
torque to 10 in/lb.
9. Reconnect the three air hoses to the
corresponding fittings on the new module
from which they were removed from the
original module in step 6 of this section.
Refer to Figure 4. The top hose runs to
Canister 2. The lower left hose runs to
Canister 1. The lower right hose runs
from the compressor. Make sure each
hose fits tightly onto the fitting.
Figure 4. THE INLET SOLENOID MODULE
AIR HOSE CONNECTIONS.
From the Compressor
To Canister 2
To Canister 1

South Bend, Indiana USA | networketi.com ADH INSTRUCTION MANUAL | PART NO.24108 REV B
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10. Connect the green power connector
from the new inlet solenoid module
where the original power connector
had been, then tighten the two captive
end screws to secure it in place.
11. Reinstall the front cover removed in
step 4 of this section. If it was placed
upside down on the lid of the unit
during this procedure, carefully turn the
cover back over and work it back into
position, past the wires and other
components in the enclosure. Reinstall
the four corner screws securing the
front cover to the chassis.
12. Reconnect the ground wire by inserting
it behind the retaining screw from
which it was removed, then tighten the
retaining screw. Reconnect the green
power connector by holding it in place
then tightening the two captive screws
removed in step 3 of this section.
Reconnect both ends of the orange
ethernet cable removed in step 3 of this
section. It does not matter which end of
the ethernet cable goes into which
receptacle.
13. With the ground wire, power connector
and ethernet cable connected, close
the NEMA enclosure and secure the
two latches. Secure the lid in place by
reinstalling the captive screws in the
two outer corners of the lid.
14. Restore machine power by plugging
the unit back in.
QUESTIONS AND COMMENTS
For technical help, questions, or
comments concerning this or any
ETI, Inc., product, contact the
Customer Service Department
between 8:00 a.m. and 5:00 p.m. EST.
DISCLAIMER
ETI, Inc. makes no representations or
warranties, either expressed or implied
with respect to the contents of this
publication or the products that it
describes, and specifically disclaims any
implied warranties of merchantability or
fitness for any particular purpose. ETI,
Inc. reserves the right to revise this
publication and to make changes and
improvements to the products
described in this publication without the
obligation of ETI, Inc. to notify any
person or organization of such
revisions, changes or improvements.
No part of this manual may be
reproduced or translated in any form or
by any means, electronic or mechanical
including photocopying and recording,
for any purpose without the express
written consent of ETI, Inc.
The ETI logo, We Manage Heat, and
ADH are registered trademarks of ETI,
Inc. NETCOM is a trademarknc. NETCOM is
Copyright © 2012 ETI, Inc. All rights
reserved.