Appleton Instruction Sheet: 501490, Appleton Intraground N2 Series Control Stations Manuals & Guides

INSTRUCTION SHEET

501490

Installation and Maintenance Instructions

N2D and N2DC Series

Control Station Enclosures

Applications

N2D and N2DC Series Pushbutton and Selector Switches are used in

conjunction with contactors or magnetic starters for remote control of

motors. They provide circuit control and/or selection. Pilot lights provide

visual assurance that an electrical function is being performed at a

remote or local location. They are suitable for use in Class I, Division

2, Groups B, C and D; Class II, Groups E, F and G; Class III; NEMA 3,

4x, 12, 7BCD (Division 2) and 12 hazardous (classified) areas as

defined by the National Electrical Code, as well as in damp or corrosive

locations indoors or outdoors.

EGS Electrical Group • 800-621-1506 • www.appletonelec.com Rev. B 12/03/02

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N2 Series (Factory Sealed)

Explosion-Proof (Div. 2)

Class 1, Div. 2, Groups B, C, D

NEMA 7BCD (Div. 2)

Dust-Ignition-Proof (Div. 1 & 2)

Class II, Div. 1 & 2, Groups E, F, G

NEMA 9EFG (Div. 1 & 2)

Class III, (Div. 1 & 2)

NEMA 3, 4X, 12 (Raintight & Watertight)

Compliances



UL Standard 698.

1. Loosen cover screws then carefully lift off the

cover and set it aside to prevent damage to

gasket and control devices. Do not remove

control devices from cover.

2. Select a suitable mounting location that will

provide strength and rigidity for supporting all

contained wiring and control. Install conduit in

the entrance hubs of the enclosure securely

with a 600 in-lb torque. When using 3/4"

conduit, remove and discard 3/4" to 1/2"

reducer. Use a sealing material around

conduit in outer part of hub to provide

complete corrosion protection.

3. Bonding and grounding requirements:

The National Electrical Code requires that

when more than one conduit enters the

enclosure ground continuity between

conduits must be maintained through proper

grounding. Appleton Type N2DC (feed

thru hub) are supplied with factory installed

bonding wire connected to each metallic

conduit entry. Type N2D (dead end) are supplied

with a green colored grounding screw.

If a separate grounding conductor is used, it must

be connected to the conduit bonding system

using the proper wire size and types as required

by the NEC and any other applicable codes.

4. Pull the necessary control wires and make the

proper electrical connections that will provide

the desired control function of the control device.

Switch units used for the pushbutton stations

or selector switch are marked "N.O." and

"N.C." to indicate normally open or normally

closed contacts of switch. Pilot lights are

furnished with pigtail leads for field wiring by

use of wire nuts.

Place cover on body and securely tighten

screws. Power can now be turned ON, as the

assembly installation is now completed.

WARNING

Make sure that electrical power is off before

starting installation or maintenance.

NOTE: For field installation of control devices,

refer to instruction sheet Dwg. No. 501475.

Instruction for Installation

N2D Pushbutton

and Selector Switch Unilets

CAUTION: Make sure cover gasket and body

surfaces are free of any foreign substances

before assembling cover to body.

Maintenance

A. A schedule for maintenance check must be

made at least once a year. It may be necessary

to inspect frequently as necessary depending

upon frequency of use and environment.

B. If it is necessary to open enclosure for

inspection, always disconnect from the supply

power source before opening cover.

C. Perform visual, electrical and mechanical checks

on all components on a regular basis.



Visually check for undue heating as evidence

by discoloration of wires and other

components, damaged or worn parts, or

leakage evidence by water or corrosion

inside enclosure.



Electrically check to make sure connections

are tight and clean, contacts are properly

making or breaking as required.



Mechanically check that all parts are properly

assembled and all operating mechanisms

are all moving freely.

U.S. Pat. 4,260,863 U.S. Pat. 3,699,276

Patented Canada 1980 Patented Canada 1974

Aluminum grounding grid,

imbedded into the non-metallic

enclosure during molding,

provides complete grounding

system. No field work. No extra

grounding wires or parts required.



N2 series control stations;

body and cover of 30%

glass-reinforced thermoplastic

polyetherimide.

Single Gang

Furnished with a 3/4" to 1/2" reducer.

2.

Seal here

3.

Factory Installed Bonding

Wire (for feed thru hubs)

5.63"

(15.2 cm)

.47"

(1.1 cm)

4.50"

(11.4 cm)

2.19"

(15.5 cm)

Mtg. Holes

2.

Seal here

(4) Screws

1/4"-20 x 7/8 Lg.

Two Re moveable

Mounting Lugs

9/32" Dia. Mtg. Hole

5.63"

(14.2 cm)

6.19"

(15.7 cm)

Hub

Centerline

.94"

(2.3 cm)

3.69"

(9.3 cm)

1.00"

(2.5 cm)

2. TO PROVIDE COMPLETE CORROSION PROTECTION

- AFTER CONDUIT IS INSTALLED APPLY CORROSION

RESISTANT MATERIAL IN HUB RECESS AND

AROUND EXPOSED CONDUIT THREADS.

2.

Seal here

Dead-End

Feed-Thru

EGS Electrical Group • 800-621-1506 • www.appletonelec.com Rev. B 12/03/02

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