3M Dynapro ET 350R, Dynapro ET 350L3 Installation Guide

Installing the NEMA 4X Hatch

ET 350 Monitor (Models ET 350R and ET 350L3)

Intended Use

When properly installed using the materials provided, and
according to these instructions, the NEMA 4X Hatch is
intended to provide for the ET 350 monitor (specifically,
ET 350R and ET 350L3 monitors) a NEMA 4X/IP66 seal
on all sides. The ET 350L3 monitor is also UL listed for use
in Pollution Degree 3 environments

Warning

Read and understand all safety information
before installing and using this product.

To reduce the risk of electric shock or fire which
could result in serious personal injury or death:

! Follow all product and accessory installation

instructions.

! Wiring installation should be done by a journeyman

electrician and must comply with federal and local
electrical codes.

! Any servicing or other procedures not described in this

document are to be performed only by 3M Touch
Systems service personnel.

! Properly install the monitor with a NEMA 4X gasket that

is undamaged and effective.

! Properly install the NEMA 4X gasket to achieve a

NEMA 4X/IP66 seal.

! After making an opening, make sure that there are no

metal shavings in the hatch.

! Choose fittings and a power cable that provide

adequate strain relief for communications and power
cables.

! A cable/fitting combination will have to be found that

meets local electrical requirements and the
requirements for a NEMA 4X seal.

! When connecting power with fixed field wiring for the

ET 350L3 monitor and the ET 350R monitor, the power
cable must be double insulated. A clear, flexible
insulator (supplied) must cover the portion of the cable
that is not double insulated when connecting to a
terminal strip connector..

Caution

To reduce the risk of electric shock or fire which
may result in minor or moderate injury or cause
property damage:

! Use round cables that fit the diameter range of the

cable fitting, as shown in Table A, to meet local
electrical requirements and the requirements for a
NEMA 4X/IP66 seal.

Equipment

Materials supplied

The following materials are provided for installing
the NEMA 4X hatch on the ET 350 monitor:

! 1 NEMA 4X hatch (with removable plate

attached

Installing the NEMA 4X Hatch 3M Dynapro ET 350 Monitor (Models ET 350R and ET 350L3)

! 1 NEMA 4X extended hatch cover

! 1 gasket

! 4 #6-32 Phillips screws

Tools required

To install the NEMA 4X hatch, you will need the
following:

! Horizontal work surface with a padded cover or

foam pads to protect the front bezel and the
display of the unit.

! Flat blade screwdriver with 3/16-inch blade

! No. 1 Phillips torque screwdriver

! 1 19/32" (15 mm) open-end wrench

! 1 15/16" (24 mm) open-end wrench

Attaching the gasket

Important

If you ordered the ET 350L3 monitor, the hatch gasket
was attached at the factory. Proceed to “Preparing the
hatch for cables”.

1. Place the monitor face down on a horizontal

work surface (covered with foam pads or other
material to protect the monitor’s bezel and touch
screen), with the access hatch facing you.

! Cable fitting components (3 large sizes and

3 small sizes of each component are provided):

! Locking nut

! O-ring

! Body hex with compression sleeve

! Sealing nut

For details about the supplied cable fitting
components, see Table A.

2. Before removing the gasket backing, position the

gasket over the recessed edge of the access hatch
opening so that you know which way it fits.

Note. The gasket is not rectangular. The side of

the gasket that is placed near the back of the
monitor is shorter than the side that is placed
near the front of the monitor.

Back of monitor

Front of monitor

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19504 (Rev. 1.1) Page 2

Installing the NEMA 4X Hatch 3M Dynapro ET 350 Monitor (Models ET 350R and ET 350L3)

3. Start at one corner and peel away just enough of

the backing to expose about 1 inch of adhesive
on each side of the corner.

Important

! The adhesive under the backing is very delicate. To

be sure that you do not remove the adhesive with the
backing, use a razor knife to separate the backing
from the adhesive.

! Do not remove the entire backing at once. Start at

one corner, lift and peel back some of the backing
only, as described below.

! Do not stretch the gasket. This can cause the

adhesive layer to come away from the gasket.

4. Place the gasket on the recessed edge of the

access hatch, with the backing side down. Line it
up with the edge of the opening in the access
hatch, then gently press the corner with the
exposed adhesive into place. Don’t press it down
firmly, yet.

5. With the gasket gently adhering at the corner,

peel the backing away from the corner carefully,
a little bit at a time, gently pressing the gasket
into place around the edge of the access hatch as
you go along. Don’t press it down firmly, yet.

6. Continue until you have removed all of the

backing and the gasket is lightly tacked into
place around the opening of the access hatch.

7. Make sure that the entire surface of the gasket is

in contact with the recessed edge of the access
hatch, without bumps or ripples.

8. When you are satisfied with the fit, use your

fingers to press the gasket firmly into place all
around the opening of the access hatch.

Preparing the hatch for cables

You can make up to four openings through the back
of the hatch.

Do not make openings in the removable plate, the top
or bottom of the hatch, nor in the extended hatch
cover (if you are using the extended hatch cover).

Important

Be sure that the openings you make are free of burrs and
that the surface around the hole is smooth and free of
debris. This will help ensure that the installed fittings seal
properly.

If you want to make your own cables, refer to pin-outs
in the 3M Dynapro ET 350 Monitor User’s
Installation Guide.

Connecting cables to the hatch

To ensure safe, certifiable connections and a complete
seal using one of the sealed fittings provided
(Table A), follow the steps in this section.

Table A: Supplied cable fittings (large and small)

Small fitting Large fitting

Manufacturer Sealcon Sealcon

Part number CD07CA-BK CD13NA-BK

Round cable
diameter range

Clearance hole
(+0.010" / -0.000")

(+0.25 mm / -

0.000 mm)

Description Straight Straight

0.150 - 0.250"
(3.81 - 6.35 mm)

0.490"
(12.5 mm)

0.250" - 0.450"
(6.35 - 11.43 mm)

0.830"
(21.1 mm)

Open-end
wrench

Torque of
locking nut

Torque of
sealing nut

19/32"
(15 mm)

20 inch-pounds 31 inch-pounds

14 inch-pounds 22 inch-pounds

15/16"
(24 mm)

19504 (Rev. 1.1) Page 3