NOSHOK NEMA 4 User Manual

NEMA 4 ENCLOSURES FOR 1900 & 1950 SERIES

PLASTIC ENCLOSURES

DESCRIPTION

These enclosures are designed for applications requiring a water resistant
instrument enclosure. The enclosures are fabricated of polycarbonate and are
designed to withstand NEMA 4X/IP65 wash-down applications. The
enclosures must be drilled to accept conduit fittings or other types of wiring
connectors. The enclosures can be used free-standing, or securely fastened to

mounting surface.

a

ENC2 DIMENSIONS In inches (mm)

ENC3 DIMENSIONS In inches (mm)

ORDERING INFORMATION

PART NUMBERDESCRIPTION

Plastic Enclosure for single units

Plastic Enclosure for units with a PS3 attached

ENC2

ENC3

ENC2 INSTALLATION

It is recommended to wire the unit before mounting it in the enclosure to
ensure good electrical connections. The following steps outline the most
common sequence for installing a unit without a PS3 attached.

1. Determine the location of the conduit fitting and drill the necessary hole.

Install the fitting and bring the wiring into the enclosure.

2. Slide the panel gasket over the rear of the unit to the back of the bezel

3. Assemble nut fastener and mounting screw onto both sides of the mounting

clip. The tip of the screw should not project from the hole in mounting clip.

4. Install the unit through the opening in the front of the lid until the bezel

flange contacts the panel.

5. Slide the mounting clip over the rear of the unit until the mounting clip is

against the inside of the enclosure. The mounting clip has latching

features which engage into mating features on the unit’s

housing.

Note: It is necessary to hold the unit in place when

sliding the mounting clip into position.

6. Alternately tighten each screw to ensure uniform

gasket pressure. Visually inspect the front panel

gasket. The gasket should be compressed to about

75 to 80% of its original thickness

torque is 28 to 36 in-oz.). If not, gradually turn

mounting screws to further compress the gasket.

7. If the gasket is not adequately compressed, and the

mounting screws can no longer be turned, loosen the

mounting screws and check that the mounting clip is

latched as close as possible to the inside of enclosure.

Repeat the procedure for tightening the screws.

(Recommended

.

8. Connect the necessary wires to the unit for the application desired.

9. Assemble the enclosure with the screws
provided. Alternately tighten each screw
to ensure uniform gasket pressure.

1

2

ENC3 with PS3 Installation

Installing a unit with a PS3 attached requires some planning. It is
recommended that the unit with the PS3 attached be temporarily installed
in the enclosure to determine the best location for the conduit fitting to avoid
interference with the PS3.

1. Determine the location of the conduit fitting and drill the necessary hole.

Install the fitting and bring the wiring into the enclosure.

2. Slide the panel gasket over the rear of the unit to the back of the bezel .

3. Remove the common and V+ screw terminals from the rear of the unit (save

for later use) and replace them with the stand-offs (supplied with the

PS3).

4. Assemble nut fastener and mounting screw onto both sides of the mounting

clip. The tip of the screw should not project from the hole in mounting clip.

5. Install the unit through the opening in the front of the lid until the bezel

flange contacts the panel mounted gasket.

6. Slide the mounting clip over the rear of the unit until the mounting clip is

against the inside of the enclosure. The mounting clip has latching

features which engage into mating features on the unit’s housing.

Note: It is necessary to hold the unit in place when

sliding the

mounting clip into position.

7. Alternately tighten each screw to ensure uniform gasket pressure. Visually
inspect the front panel gasket. The gasket should be compressed to about 75
to 80% of its original thickness (Recommended torque is 28 to 36 in-oz.).
If not, gradually turn mounting screws to further compress the gasket.

8. If the gasket is not adequately compressed, and the mounting screws can no
longer be turned, loosen the mounting screws and check that the mounting
clip is latched as close as possible
to the inside of enclosure.
Repeat the procedure for
tightening the screws.

9. Mount the PS3 and optional sensor wires needed, to the stand-offs using
the screw terminals from the unit with the supplied square washers.

10. Connect AC power to the terminal block of the PS3.

11. After all electrical connections have been made, assemble the enclosure
with the screws provided. Alternately tighten each screw to ensure uniform
gasket pressure.

DIMENSIONS In inches (mm)

DESCRIPTION

This enclosure is designed for use with the 1900 & 1950 units.
The enclosures are large enough to accommodate a Power Supply
(PS3) attached to the unit. These rugged enclosures are fabricated of formed
steel with all seams welded to withstand NEMA 4/IP65 wash-down
applications. The kits are coated with a durable black polyurethane finish.

The holes for conduit fittings or other types of wiring connectors can be
drilled through the removable rear access panel, or through the enclosure itself.

The enclosures can be free standing or securely fastened to a mounting
surface with the brackets and hardware found in the mounting kit (provided
with the enclosure). The brackets also allow the enclosure to be raised and/or
tilted from the mounting surface in order to achieve the most favorable
operating position. Provided are four self-stick foot pads that can be applied to
the bottom of the enclosure to protect the mounting surface. The foot pads are
particularly useful for free standing installations.

PART NUMBER

ENC1

DESCRIPTION

NEMA 4/IP65 ENCLOSURE

ORDERING INFORMATION

ENC1 - STEEL ENCLOSURE

PS3