ETI NETCOM ADH NEMA Use and care manual

AC POWER SUPPLY MODULE REPLACEMENT PROCEDURE | PART NO. 24732 REV B.0
MODEL ADH NEMA
AC POWER SUPPLY MODULE
REPLACEMENT PROCEDURE
Replacement Kit Part Number 24093
Document Part Number 24732

MODEL ADH NEMA AC POWER SUPPLY MODULE
REPLACEMENT PROCEDURE
AC POWER SUPPLY MODULE REPLACEMENT PROCEDURE | PART NO. 24732 REV B.0
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.
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.
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.
ADH NETCOM AC NEMA AC POWER SUPPLY MODULE
REPLACEMENT PROCEDURE
This procedure addresses the removal and replacement of
the AC Power Supply Module in an ADH NETCOM AC NEMA
Automatic Air Dehydrator. 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:
• Small flat blade screwdriver
• 5/16” Nut driver
• Philips screwdriver
• Long screwdriver
2
PART NO. DESCRIPTIONQTY.
23566
24732
AC Power Supply Module
Instruction Manual (this document)
1
1

Figure 1.A - DISCONNECTING THE ETHERNET CABLE,
THE POWER CABLE CONNECTOR, AND THE GROUND WIRE.
Figure 2. - THE AC POWER SUPPLY MODULE MOUNTING BRACKET.
Figure 1.B - DISCONNECTING THE ETHERNET CABLE,
THE POWER CABLE CONNECTOR, AND THE GROUND WIRE.
AC POWER SUPPLY MODULE REPLACEMENT PROCEDURE | PART NO. 24732 REV B.0
3
Shut off machine power by unplugging the unit.
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.
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
Figures 1.A & 1.B.
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.
Perform the following steps to replace the ADH NETCOM
AC NEMA Automatic Air Dehydrator AC Power Supply
Module (23566)
1.
2.
3.
4.
The AC power supply module is located on the inside of
the front cover. If not already done, place a brace or prop
of some kind under the NEMA enclosure door to support
it during this procedure.
Using the nut driver, remove the four nuts and lock
washers securing the power supply module mounting
bracket to the Pem® studs inside the front cover. Refer to
Figure 2. Retain the mounting hardware.
5.
6.
MODEL ADH NEMA AC POWER SUPPLY MODULE
REPLACEMENT PROCEDURE
Disconnect both of orange
Ethernet cable, then remove from
enclosure.
Loosen both captive
screws, then disconnect
connector.
Loosen screw & remove
ground wire.
Remove and retain the nuts and
lock washers from the four
corners of the bracket

AC POWER SUPPLY MODULE REPLACEMENT PROCEDURE | PART NO. 24732 REV B.0
4
MODEL ADH NEMA AC POWER SUPPLY MODULE
REPLACEMENT PROCEDURE
Once the four nuts and lock washers securing the
mounting bracket to the front cover have been removed,
move the existing power module and mounting bracket
away from other components for greater clearance.
Note the configuration of the five electrical leads
connected to the existing AC power supply module.
Refer to Figure 3 and Table 1. These leads will connect to
the corresponding terminals on the new module. Using a
Philips screwdriver, carefully loosen the set screws
securing the electrical leads to the existing supply
module terminals, then carefully remove the leads from
the existing module. Also at this time, remove the
jumper cable from across terminals 3 and 5 on the top
side of the terminals.
7.
8.
Remove the two screws and lock washers connecting the
power supply module to the mounting bracket.
Refer to Figure 4.
Set aside the mounting bracket and attaching hardware
for re-use.
Using the two screws and lock washers removed in step
9, install the new power supply module to the mounting
bracket and torque to 8 in/lb.
Prior to installing the new power supply module and
mounting bracket, connect the electrical leads and
jumper to the new supply module as they were
connected to the original module. Refer back to Figure 3
and Table 1 on the previous page. Secure each lead and
the jumper across terminals 3 and 5 by placing each lead
behind the mounting screw from underneath then
tightening the mounting screw inside each terminal.
Gently tug on each lead to make sure it is fastened
securely.
Once the five electrical leads and jumper are installed to
the new supply module and the module itself is
connected to the mounting bracket, install the mounting
bracket over the Pem® studs on the inside of the front
cover as the original module had been. Using the nut
driver, install the four nuts and lock washers removed in
step 6 and torque to 10 in/lb.
Reinstall the front cover removed in step 4. 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 ground wire retaining screw. Reconnect the green
power connector by holding it in place then tightening
the two captive screws removed in step 3. Reconnect
both ends of the orange Ethernet cable removed in step
3. It does not matter which end of the Ethernet cable
goes into which receptacle.
With the ground wire, power connector and Ethernet
cable reconnected, close the lid of the NEMA enclosure
and secure the two latches opposite the hinges. Secure
the lid in place by reinstalling the two captive screws in
the two outer corners of the lid.
Restore machine power by plugging the unit back in.
9.
10.
11.
12.
13.
14.
15
16.
Figure 3. - AC POWER SUPPLY MODULE ELECTRICAL CONNECTIONS
Figure 4. - THE AC POWER SUPPLY MODULE MOUNTING BRACKET SECURING SCREWS.
Jumper connects across
terminals 3 and 5.
Insert Philips screwdriver into each access hole to loosen
set screws.
1 2 3 4 5 6 7

For technical help, questions or comments concerning this
product or any ETI product contact Customer Service 8:00 a.m. -
5:00 p.m. Eastern Time.
[email protected]
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ETI
1850 North Sheridan Street
South Bend, IN 46628
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CONTACTING CUSTOMER SERVICE
ETI’s two year limited warranty covering defects in workmanship
and materials applies. Contact Customer Service for complete
warranty information.
LIMITED WARRANTY
ETI 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 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 to notify any person
or organization of such revisions, changes or improvements.
DISCLAIMER
AC POWER SUPPLY MODULE REPLACEMENT PROCEDURE | PART NO. 24732 REV B.0
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MODEL ADH NEMA AC POWER SUPPLY MODULE
REPLACEMENT PROCEDURE
AC Power Supply Module Terminals
1234567
Wire Color
BlackWhite Green / Yellow Not used Black Red Not used
Wire Function
NeutralLine Ground – Ground
(Return)
+24V
(Positive) –
Table 1. - AC POWER SUPPLY MODULE ELECTRICAL CONNECTIONS.