ETI NETCOM ADH Bedienungsanleitung

South Bend, Indiana USA | networketi.com ADH INSTRUCTION MANUAL | PART NO.24101 REV B

NETCOM

®MODEL ADH

AUTOMATIC AIR DEHYDRATOR WITH ETHERNET

ADH® NETCOM™ AUTOMATIC AIR DEHYDRATOR

DISCHARGE MANIFOLD WITH SAFETY RELIEF VALVE

REPLACEMENT PROCEDURE

Replacement Kit Part Number 24088

(for use in AC or Redundant DC Units)

Replacement Kit Part Number 24751

(for use in AC NEMA Units)

Document Part Number 24101

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.24101 REV B

ADH NETCOM DISCHARGE MANIFOLD

WITH SAFETY RELIEF VALVE

REPLACEMENT PROCEDURE

This procedure addresses the removal and

replacement of the Discharge Manifold with

Safety Relief Valve in an ADH NETCOM

Automatic Air Dehydrator. The first section

addresses the replacement of the Discharge

Manifold in ADH NETCOM AC and DC units.

The second section, starting on page 7,

addresses the replacement of the Discharge

Manifold in an ADH NETCOM AC NEMA

unit.NE 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:

•Straight slot screwdriver

•1/2” / 9/16” open-end wrench

•Tubing wrench or vacuum tube pliers

•Pipe sealing tape or RTV

•Adjustable wrench

•Long screwdriver

Item

Number

Part

Number

Item

Quantity

Item

Description

23173

(AC/DC)

----- 23549

(AC NEMA)

Discharge Manifold with Safety Relief Valve

(for use in AC / Redundant DC units)

-----

Discharge Manifold with Safety Relief Valve

(for use in AC NEMA units)

2 2410 1 Instruction Manual (this document)

South Bend, Indiana USA | networketi.com ADH INSTRUCTION MANUAL | PART NO.24101 REV B

DISCHARGE MANIFOLD WITH SAFETY

RELIEF VALVE

REMOVAL AND REPLACEMENT

To replace a Discharge Manifold with Safety

Relief Valve (23173) 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 1. To replace a

Discharge Manifold (23549) in an ADH

NETCOM AC NEMA unit, proceed to page

Figure 1. ADH NETCOM AUTOMATIC AIR

DEHYDRATOR DISCHARGE MANIFOLD

WITH SAFETY RELIEF VALVE.

Back wall of chassis.

Discharge Manifold

1. Shut off AC machine power by placing

power switch in the OFF (O) position,

then unplugging the power cord.

Shut off DC machine power by

shutting off the external power supply.

If possible, move the dehydrator to a

work table.

2. Remove the rear top machine panel.

Retain mounting hardware.

3. Using a tubing wrench or vacuum

tubing pliers, carefully remove from

the discharge manifold the upper air

hose to the pressure transducer. Refer

to Figure 2.

4. Using a tubing wrench or vacuum

tubing pliers, carefully disconnect

from the discharge manifold the lower

air hose coming from the humidity

sensor. Refer to Figure 2.

Figure 2. DISCHARGE MANIFOLD AIR

HOSES.

Hose to pressure

transducer. (step 3)

Hose from

humidity sensor.

(step 4)

SafetyS afety Relief

South Bend, Indiana USA | networketi.com ADH INSTRUCTION MANUAL | PART NO.24101 REV B

5. Remove and retain the external outlet

fitting. Refer to Figure 3. Make sure

to save the fitting for re-use during

installation.

6. Remove and retain the screws and

lock washers from above and below

the outlet fitting on the back of the

chassis. Refer to Figure 3.

Figure 3. DISCHARGE MANIFOLD

EXTERNAL COMPONENTS.

Remove

Fitting (step 5)

Remove

screws and

lock washers.

(step 6)

7. With the two air hoses disconnected

and the rear fitting and mounting

hardware removed, remove the

discharge manifold from the machine.

8. Two fittings are included as part of the

replacement kit. These should already

be assembled onto the new manifold.

If not, install the fittings onto the new

manifold as on the original assembly

and apply pipe sealing tape or RTV on

the threads for a more secure fit.

9. Insert the new discharge manifold into

the machine. While holding the

discharge manifold up against the

back wall of the chassis from inside the

machine, from the outside of the

chassis, install the screws and lock

washers from above and below the

fitting which were removed in step 6

and torque to 5 1/2 in/lb. Insert the

fitting receptacle through the back

hole of the chassis as on the original

manifold.

10. Connect the two air hoses removed in

steps 3 and 4 to the new discharge

manifold. Be sure to connect them the

same way they were connected to the

original manifold, with the lower hose

connecting to the pressure transducer

and the upper hose connecting from

the humidity sensor.

11. Reinstall the rear top panel using the

hardware removed in step 2.

12. Restore machine power.

South Bend, Indiana USA | networketi.com ADH INSTRUCTION MANUAL | PART NO.24101 REV B

To replace the Discharge Manifold (23549) 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 screwdriver to

remove them.

5. Note how the three air hoses are

connected to the existing discharge

manifold, then carefully disconnect

the hoses from the existing manifold.

Refer to Figure 2. The hose in the

middle of the back or top side of the

manifold runs from the humidity

sensor. The hose on the left side of

the manifold runs to the pressure

transducer. The hose on the front or

bottom of the manifold runs to the air

out fitting. These three hoses will be

connected to the new discharge

manifold in this same arrangement.

South Bend, Indiana USA | networketi.com ADH INSTRUCTION MANUAL | PART NO.24101 REV B

Figure 2. ADH NETCOM AC NEMA

DISCHARGE MANIFOLD.

6. Remove and retain the two screws and

lock washers securing the discharge

manifold to the chassis. With the three

air hoses disconnected and the

mounting hardware removed, take the

existing discharge manifold out of the

machine.

7. Two fittings are included as part of the

replacement kit. These should already

be assembled onto the new manifold.

If not, install the fittings onto the new

manifold as on the original assembly.

To pressure

transducer

From humidity

sensor

To air out

fitting

Safety

Relief Valve

Carefully connect the air hoses to the

new discharge manifold as they had

been connected to the original

manifold. Refer back to Figure 2 on the

previous page. Connect the hose from

the humidity sensor to the fitting in the

middle of the back or top side of the

new discharge manifold. Connect the

hose to the pressure transducer to the

fitting on the left side of the new

discharge manifold. Connect the hose

to the air out fitting to the front or

bottom fitting of the new discharge

manifold. Make sure all hoses

connections are tight.

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

ground wire 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.

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.

Align the mounting holes of the new

discharge manifold with the Pem®

nuts in the floor of the chassis to which

the original discharge manifold had

been installed. Using the two screws

and lock washers retained in step 6 of

this section, install the new discharge

manifold where the original one had

been, securing the two screws into the

Pem® nuts embedded in the floor of

the chassis. Torque to 8 in/lb.

10.

11.

12.

13.

ADH INSTRUCTION MANUAL | PART NO.24101 REV B

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.

South Bend, Indiana USA | networketi.com

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