Edwards-signaling 439DEX Manuel d'utilisateur télécharger pdf

438DEX and 439DEX Fire Alarm Bells

Installation Sheet

Description

Edwards' catalog series 438DEX and 439DEX fire alarm bells

are heavy duty, diode polarized, vibrating bells intended for

use in compatible fire alarm systems and other applications

requiring electrical supervision of signaling circuit field wiring.

The 438DEX series of bells are AC-powered and the 439DEX

are DC-powered. The bells are electro-mechanical devices and

utilize solid state components. These appliances must be

installed in accordance with the applicable requirements in the

latest editions of the NFPA codes and standards, and the local

authority having jurisdiction.

Both series of the bells are listed for installation in the following

hazardous locations: Class I, Divisions 1 and 2, Groups B, C

and D, Class I, Zones 1 and 2, Groups IIA and IIB, Class II,

Divisions 1 and 2, Groups E, F and G and Class III, Zones 1

and 2.

Installation

The following items (not supplied) are required for installation

of the bell:

• 3/4 in. National Pipe Taper (NPT) conduit to contain

signaling circuit wires.

• One 3/4 in.-14 NPT nipple

• One conduit outlet box suitable for use in the hazard

• Two fasteners up to 3/8 in. diameter and washers suitable

for securing bell to mounting surface

• Four wire nuts

Caution: Do not apply power to the bell until installation has

been completed and the cover has been secured on outlet box.

The bell can be mounted to any solid surface.

To install the bell:

1. Refer to Figure 1 on page 2. Remove the gong support

bolt, remove the gong and set it aside. Bring the bell wires

through the nipple and secure the nipple onto the bell

(being careful not to twist or crimp the wires). Feed the bell

wires into the outlet box and secure the outlet box onto the

nipple (again being careful of the wires). Secure the 3/4 in.

NPT conduit onto the outlet box.

2. Place the bell against mounting surface and mark

mounting hole positions, the dimensions are shown in

Figure 2. Install fasteners with washers through mounting

brackets and secure bell to surface.

3. Replace the gong in its original orientation and secure.

4. Remove the cover from the conduit outlet box. Feed the

signaling circuit field wires through the conduit and into

and out of the outlet box along with the four bell wires.

Caution: Wire run must be broken to provide electrical

supervision.

5. Connect the signaling circuit wires to the bell wires per the

applicable wiring diagram. For 438DEX series AC bells,

see Figure 3. For 439DEX series DC bells, see Figure 4.

Make wire connections using wire nuts. Also, refer to the

applicable installation instructions for wiring connections

used in the fire alarm control panel for additional wiring

connection details. Connect only two wires per wire nut at

each connection. Do not twist wires together.

6. Replace the cover on outlet box.

7. Apply power to the fire alarm control panel. Initiate an

alarm to activate the bell and verify that it sounds. Then

reset the panel to silence the bell and return to the

supervisory mode.

WARNING: This device will not operate without electrical

power. As fires frequently cause power interruptions, we

suggest you discuss further safeguards with your local fire

protection specialist.

1 2 3 4

Résumé du contenu

Page 1 - Installation Sheet

Page 2 - Maintenance

2 / 4 P/N P-047550-0587 • REV 6.0 • ISS 04NOV11 Maintenance Examine the bell annually for accumulation of dirt and clean when necessary. WARNING:

Page 3 - Contact information

P/N P-047550-0587 • REV 6.0 • ISS 04NOV11 3 / 4 Specifications Catalog number Voltage Alarm current 438DEX Series 120 VAC 0.041 A (RMS) 439DE

Page 4

4 / 4 P/N P-047550-0587 • REV 6.0 • ISS 04NOV11

Modèles reliés 438DEX

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Edwards-signaling 439DEX Manuel d'utilisateur

Naviguer en ligne ou télécharger Manuel d'utilisateur pour Sécurité Edwards-signaling 439DEX. Edwards Signaling 439DEX User Manual Manuel d'utilisatio

Résumé du contenu

Modèles reliés 438DEX

Commentaires sur ces manuels

Produits connexes et manuels pour Sécurité Edwards-signaling 439DEX