ETI NETCOM ADH Use and care manual

South Bend, Indiana USA | networketi.com ADH INSTRUCTION MANUAL | PART NO.24098REV B
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NETCOM
®MODEL ADH
AUTOMATIC AIR DEHYDRATOR WITH ETHERNET
ADH®NETCOM™ AUTOMATIC AIR DEHYDRATOR
COMPRESSOR ASSEMBLY
REPLACEMENT PROCEDURE
Replacement Kit Part Number 24085
Document Part Number 24098

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.24098REV B
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South Bend, Indiana USA | networketi.com ADH INSTRUCTION MANUAL | PART NO.24098REV B
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ADH NETCOM COMPRESSOR
ASSEMBLY REPLACEMENT
PROCEDURE
This procedure addresses the removal and
replacement of the Compressor Assembly in
an ADH NETCOM Automatic Air Dehydrator.
The first section addresses the replacement
of the Compressor Assembly in the AC and
DC models. The second section, starting on
page 6, addresses the replacement of
the Compressor Assembly 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
•Tie wrap cutting scissors
•Small flat blade screwdriver
•Tubing wrench or vacuum tube pliers
Item
Number Part Number Item Quantity Item Description
2321611 1
Compressor Module
22 23159 1
Mounting Plate
33 24098 1
Instruction Manual (this document)
412200 4
Flat washers
NOTE:
The this kit will have a solid rubber mount
attached to the compressor which replaces
the EZ mount bracket. It is recommended
that the wire tie remain loose until after the
mount is installed in the unit to allow easier
installation.
Original 2 Hole Mount
4 Hole EZ Mount
Solid Rubber 4 Hole Mount, replaces EZ
Mount Bracket

South Bend, Indiana USA | networketi.com ADH INSTRUCTION MANUAL | PART NO.24098REV B
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COMPRESSOR ASSEMBLY REMOVAL AND
REPLACEMENT
To replace the compressor (23216) in either
an ADH NETCOM with AC power or an ADH
NETCOM with Redundant DC power,
perform the steps below. Refer to Figure 1.
To replace the compressor (23216) in an
ADH NETCOM AC NEMA, proceed to page
6.
Figure 1. THE ADH NETCOM AUTOMATIC
AIR DEHYDRATOR COMPRESSOR
ASSEMBLY.
Compressor Power Connector
Compressor Assembly
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 POWER CONNECTOR END
SCREWS.
“Captive” end screws
cannot be removed.
4. Using a 5/16” nut driver, loosen and
remove the nuts and lock washers
securing the existing compressor
mounting bracket to the chassis.
Retain the mounting hardware for re-
use.
5. Using a tubing wrench or vacuum
tube pliers, hold the air hose about an
inch in from the end of the hose (in
front of canister 2), then pull gently to
disconnect the air hose from the
fitting. Refer to Figure 3. With both
the mounting base and the air hose
disconnected, remove the existing
compressor from the machine.
Figure 3. DISCONNECTING THE AIR HOSE.
Canister 2
(reference)
Place wrench
about an inch
from the end
to remove or
replace hose.

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6. The mounting hole “footprint” of the
replacement compressor assembly
mounting bracket most likely does not
match the mounting hole footprint of
the original bracket. Either way, the
original mounting bracket hole
configuration must be re-used when
installing the new compressor. On
units using the 2-hole mounting
bracket (23159), that original mounting
bracket (or the replacement provided in
the kit) must be used again. In this
case, cut the tie wrap securing
the new compressor to its
mounting bracket, remove the two
screws securing the existing
compressor to its mounting bracket,
then attach the new
compressor to the original mounting
bracket using the two screws and the
slotted mounting holes used on the
original mounting bracket.
7. Connect the air hose to the same
compressor fitting from which the
original hose was removed in step 5.
8. With the new compressor installed on
the mounting bracket with the
matching mounting hole footprint,
install the mounting bracket with the
new compressor onto the Pem® studs
from which the original compressor
mounting bracket was removed.
Secure the mounting bracket using the
nuts and lock washers removed in step
4. If using the original 2-hole mounting
bracket, torque the two nuts to 10 in/lb.
If using the mounting bracket that came
with the new compressor, torque the
four nuts to 4 in/lb.
Connect the new compressor green
power connector to the same place from
which the original compressor power
connector was removed in step 3, then
tighten the two end screws to secure it in
place.
Reinstall the forward top panel using the
hardware removed in step 2.
Restore machine power.
9.
10.
11.

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To replace the compressor (23216) 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 POWER CONNECTOR END
SCREWS.
“Captive” end screws
cannot be removed.

South Bend, Indiana USA | networketi.com ADH INSTRUCTION MANUAL | PART NO.24098REV B
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6. Using a 5/16” nut driver, loosen and
remove the nuts and lock washers
securing the existing compressor
mounting bracket to the chassis.
Retain the mounting hardware for re-
use.
7. Using a tubing wrench or vacuum
tube pliers, hold the air hose about an
inch in from the end of the hose (in
front of canister 2) then pull gently to
disconnect the hose from the fitting.
Refer to Figure 3. With the mounting
base and the air hose disconnected,
remove the existing compressor from
the machine.
Figure 3. DISCONNECTING THE AIR HOSE.
Place wrench
about an inch
from the end
to remove or
replace hose.
Canister 2
(reference)
the two screws and the slotted
mounting holes used on the original
mounting bracket.
Reconnect the air hose which was
removed in step 7 of this section to the
compressor fitting.
With the new compressor installed on
the mounting bracket with the matching
mounting hole footprint, install the
mounting bracket with the new
compressor where the original assembly
had been. Secure the compressor
mounting bracket using the nuts and
lock washers removed in step 6 of this
section. If using the original 2-hole
mounting bracket, torque the two nuts
to 10 in/lb. If using the mounting
bracket that came with the new
compressor, torque the four nuts to 4 in/
lb.
Connect the new compressor green
power connector to the same place
from which the original compressor
power connector was removed in step 5
of this section, then tighten the two end
screws to secure it in place.
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.
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.
1. The mounting hole “footprint” of
the replacement compressor
assembly mounting bracket most
likely does not match the
mounting hole footprint of the
original bracket. Either way, the
original mounting bracket hole
configuration must be re-used
when installing the new
compressor. On units using the
2-hole mounting bracket, that
original mounting bracket must
be used again. In this case, cut
the tie wrap securing the new
compressor to its mounting
bracket, remove the two screws
securing the existing compressor
to its mounting bracket, then
attach the new compressor to the
original mounting bracket using
8.
9.
10.
11.
12.
13.

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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 trademark of ETI,
Inc.
Copyright © 2012 ETI, Inc. All rights
reserved.
14. 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.
15. Restore machine power by plugging
the unit back in.