ETI NETCOM ADH Manual de uso y cuidado

South Bend, Indiana USA | networketi.com ADH INSTRUCTION MANUAL | PART NO.24108 REV B

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

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

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

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

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

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

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

reserved.

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