Aiphone LEF Series - User Manual

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LEF Series

OPEN VOICE SELECTIVE CALL INTERCOM

LEF-3

(3-call master)

LEF-5

(5-call master)

LEF-10

(10-call master)

LEF-10S

(10-call master w/all call)

INSTALLATION & OPERATION MANUAL

1 SYSTEM OUTLINE & COMPONENTS

834920 0505 N

Models:

• LEF intercom

(LEF-3, 5,10 or 10S)

• Packet of screws

•

Installation & Operation Manual

 System outline

The LEF is a flexible Open Voice Selective Call Intercom system which integrates any combination of master and

sub stations. The system features selective calling from any master with handsfree reply, call-in and LED from a

variety of sub stations, selective door release, and a variety of other optional features.

 Package contents

* LEF-5W, LEF-10W & LEF-10SW:

w/Terminal Box prewired

LE-D

LT-1

15~33mfd,

EL-9S

PS12

LEF-10S

LE-A

LE-AN

BG-10C

LE-A3

LE-AN3

LEF-10

LEF-5

LEF-3

LE-DA

8ohm horn

17 12

(

)

(

)

(

)

Multi-cond.

cable

RY-PA

WARNING

(Negligence could result in death or serious injury.)

•

PRECAUTIONS

Do not dismantle or alter the unit. Fire or electric shock could result.

Do not connect any non-specified power source to the +, - terminals, and do not install two power supplies in parallel to a single input.

Fire, damage to the unit, or system malfunction could result.

Keep the unit away from water or any other liquid. Fire or electric shock could result.

When existing doorbell wires are used, it is possible that they contain AC voltage. Electric shock or unit damage could result. Make

sure doorbell transformer is disconnected before re-using those wires. Only a qualified Technician should do the installation.

Do not use DC power supply with a voltage other than what is specified. Fire or electric shock could result.

CAUTION

(Negligence could result in injury or damage to property.)

•

Before turning on power, make sure wires are not crossed or shorted. Fire or electric shock could result.

Do not install the unit in a location subject to constant vibration or impact. If dropped, injury or unit damage could result.

When mounting the unit on a wall, install the unit in a convenient location, but not where it could be jarred or bumped. Injury could result.

For DC powered systems, use Aiphone power supply model specified with system. If non-specified product is used, fire, malfunction, or

unsatisfactory system performance could result.

During an electrical storm, unplug the power supply from the AC outlet. If not, power surge damage to the equipment could result.

Do not install the unit in any of the following locations. Fire, electric shock, or unit trouble could result.

* Places under direct sunlight, or near heating equipment that varies in temperature.

* Places subject to dust, oil, or chemicals.

* Places subject to moisture and humidity extremes, such as a bathroom, cellar, greenhouse, etc.

* Places where the temperature is quite low, such as inside a refrigerated area or in front of air conditioner.

* Places subject to steam or smoke, such as near heating or cooking surfaces.

* Where interference generating devices such as dimmer switches, alarm panels, or fluorescent light fixtures are closeby.

GENERAL PRECAUTIONS

•

Keep the intercom wires more than 20 inches (50cm) away from AC 100~240V wiring. AC induced noise and/or unit malfunction could

result.

In areas where broadcasting station antennas are close by, the intercom system may be affected by radio frequency interference.

The unit will be inoperative during a power outage.

The unit is for inside use only. Do not install outdoors.

Main Page

Other manuals for Aiphone LEF Series

Installation Manual8 pages

Instructions16 pages

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Summary

PRECAUTIONS AND SYSTEM COMPONENTS

Safety Warnings and Precautions

Covers critical safety warnings, cautions, and general precautions for installation and operation.

SYSTEM FEATURES AND WIRING GUIDELINES

Wiring System Types and Reference Chart

Explains different wiring system types and provides a wire reference chart for conductors and gauges.

INSTALLATION AND WIRING PRECAUTIONS

Critical Installation Safety Guidelines

Highlights essential safety precautions for installing the LEF system to prevent damage or injury.

WIRING TERMINALS AND TONE ADJUSTMENT

Terminal Definitions and Wiring Diagrams

Defines terminal functions and illustrates wiring for LEF master stations and sub stations.

WIRING CONFIGURATIONS AND EXAMPLES

All-Master System Wiring Configuration

Details the wiring configuration for an LEF all-master system and cable requirements.

ADVANCED WIRING CONFIGURATIONS

LEF-10 S AND LEF-10 WIRING EXAMPLES

SYSTEM OPERATIONS AND CORE FUNCTIONS

Making and Receiving Calls

Explains how to initiate calls to other stations and how to receive calls from subs or masters.

Door Release and All Call Operation

OPERATION PANELS AND TROUBLESHOOTING

Troubleshooting Single-Master Systems

Provides solutions for common problems encountered in single-master LEF intercom systems.

TROUBLESHOOTING COMMON PROBLEMS

Communication and LED Issues

Offers solutions for problems related to call tone, communication, and LED indicator functionality.

Noise, Feedback, and Wiring Errors

Addresses issues like AC hum, feedback, and common wiring errors in the LEF system.

TECHNICAL PRECAUTIONS AND SPECIFICATIONS

Important Technical Precautions

Summary

PRECAUTIONS AND SYSTEM COMPONENTS

Safety Warnings and Precautions

Covers critical safety warnings, cautions, and general precautions for installation and operation.

SYSTEM FEATURES AND WIRING GUIDELINES

Wiring System Types and Reference Chart

Explains different wiring system types and provides a wire reference chart for conductors and gauges.

INSTALLATION AND WIRING PRECAUTIONS

Critical Installation Safety Guidelines

Highlights essential safety precautions for installing the LEF system to prevent damage or injury.

WIRING TERMINALS AND TONE ADJUSTMENT

Terminal Definitions and Wiring Diagrams

Defines terminal functions and illustrates wiring for LEF master stations and sub stations.

WIRING CONFIGURATIONS AND EXAMPLES

All-Master System Wiring Configuration

Details the wiring configuration for an LEF all-master system and cable requirements.

ADVANCED WIRING CONFIGURATIONS

LEF-10 S AND LEF-10 WIRING EXAMPLES

SYSTEM OPERATIONS AND CORE FUNCTIONS

Making and Receiving Calls

Explains how to initiate calls to other stations and how to receive calls from subs or masters.

Door Release and All Call Operation

OPERATION PANELS AND TROUBLESHOOTING

Troubleshooting Single-Master Systems

Provides solutions for common problems encountered in single-master LEF intercom systems.

TROUBLESHOOTING COMMON PROBLEMS

Communication and LED Issues

Offers solutions for problems related to call tone, communication, and LED indicator functionality.

Noise, Feedback, and Wiring Errors

Addresses issues like AC hum, feedback, and common wiring errors in the LEF system.

TECHNICAL PRECAUTIONS AND SPECIFICATIONS

Important Technical Precautions

The LEF Series Open Voice Selective Call Intercom is a versatile communication system designed for both residential and commercial applications, integrating master and sub stations to provide selective calling, hands-free reply, and various optional features. This system is available in several models: LEF-3 (3-call master), LEF-5 (5-call master), LEF-10 (10-call master), and LEF-10S (10-call master with all-call functionality).

Function Description

The core function of the LEF intercom system is to facilitate open voice selective communication between multiple stations. Masters can selectively call any sub station, and sub stations can initiate calls to masters. The system supports hands-free reply from sub stations, enhancing convenience.

Key operational features include:

Selective Calling: From any master station, users can select and call a specific sub station or another master station.
Hands-Free Reply: Sub stations can reply to master calls without needing to press any buttons, offering ease of use.
Call-in and LED Indication: Sub stations can initiate calls to master stations, which are indicated by an electronic tone and a lit LED on the master, remaining lit for approximately 20 seconds.
Door Answering: Master stations can answer calls from door stations, which are indicated by an electronic call tone and an LED. If a BG-10C adaptor is included, a 4-stroke chime tone can be heard through inside stations. For PanTilt MK door stations, a MYH-CU monitor will turn on for about 45 seconds.
Door Release: LEF-5, LEF-10, and LEF-10S models offer selective door release. Once communication is established with a door station, pressing the "KEY" button releases the corresponding door strike. This requires an RY-PA relay for each door.
All Call (LEF-10S only): The LEF-10S master station includes an "ALL CALL" button, enabling announcements to be made to all stations in the system. The BG-10C adaptor is required for this feature to be operable.
Privacy Feature: The "PRIV" button allows a calling master to enter "privacy" mode, cutting off the "listen" mode. To release from privacy, the "TALK" button must be pressed momentarily.
Background Music and Chime Distribution: With the BG-10C adaptor, music can be selectively distributed to all LEF station speakers, controlled by switch settings. When a call is initiated, the music mutes automatically. When a door station calls in, a chime tone is transmitted to selected inside stations.
External Signaling: The system supports external signaling when door or sub stations call, requiring an RY-AC/A relay and an external device.
Horn Speaker Integration: An AH-108 8Ω horn speaker with an LT-1 matching transformer and NP-25V capacitor can be integrated for enhanced audio output.

Usage Features

The LEF system is designed for straightforward operation with intuitive controls.

Master Station Controls: Master stations feature station-select buttons (1-3 for LEF-3, 1-10 for LEF-5/10/10S), a voice volume control, an "OFF" button (with an ON LED), a "PRIV" button with an LED indicator, and a "TALK" (listen) button. LEF-10S models also include an "ALL CALL" transmit button and LED, and a door release button.
Call Initiation: To call a master or sub, users depress the desired station selector button, then press the "TALK" button to speak. Releasing "TALK" allows listening. For an attention-getter tone, "PRIV" and "TALK" can be pressed together.
Receiving Calls: When a sub station calls, its LED lights up, and a tone sounds. Users depress the lit station selector button, then press "TALK" to speak and release to listen. When another master calls, the responding master answers hands-free, and the "Occupied" lamp illuminates.
Call Tone Adjustment: A 3-position volume switch, located under the directory cover plate, allows adjustment of the call tone volume to low, medium, or high.
Call Tone in Occupied Mode: A selector switch allows users to choose how call tones behave when the master is in occupied mode. Position "B" (factory default for surface mount masters) allows the call tone to be heard at a muted level. Position "A" mutes the call tone at the master while the system is occupied, which is recommended when a BG-10C is included to allow the door chime to be heard throughout the system.
Wiring Flexibility: The system supports various wiring configurations, including loop-wired systems with multi-conductor shielded cable, all-master systems, single-master systems, and intermixed systems. It is recommended to use 3-conductor wiring for sub and door stations, even in single-master homerun systems, to allow for future expansion.

Maintenance Features

The manual provides guidance for installation and troubleshooting to ensure reliable operation and longevity of the system.

Installation Precautions: Users are warned against dismantling or altering the unit, connecting non-specified power sources, or installing two power supplies in parallel. The unit should be kept away from water and liquids. When reusing existing doorbell wires, it is crucial to disconnect the doorbell transformer first. Only qualified technicians should perform installations.
Environmental Considerations: The unit should not be installed in locations subject to constant vibration, direct sunlight, extreme temperatures, dust, oil, chemicals, moisture, humidity, steam, smoke, or near interference-generating devices (e.g., dimmer switches, alarm panels, fluorescent lights).
Surge Protection: For DC-powered systems, using the specified Aiphone power supply is crucial. During electrical storms, unplugging the power supply from the AC outlet is recommended to prevent surge damage. Installing a surge arrester (Aiphone model SA-1) is advised, especially if the power supply lacks a GROUND terminal.
Wiring Best Practices: Intercom wires should be kept at least 20 inches (50cm) away from AC 100~240V wiring to prevent induced noise and malfunction. In areas near broadcasting station antennas, radio frequency interference may affect the system.
Accessing the Unit for Wiring: Instructions are provided for safely opening the unit to make wire connections, including removing the operation plate and lifting the front of the intercom off the back chassis.
Troubleshooting Guide: A comprehensive troubleshooting guide addresses common issues such as no call tone or LED, no communication, multiple LEDs lighting up, door release not working, All Call or chime malfunctions, feedback, weak communication, and AC hum. Solutions include checking jumper installations, wire connections, adjusting volume levels, and ensuring proper wiring separation from AC sources.
Cleaning: The LEF equipment should be cleaned with a soft cloth dampened with a neutral household cleanser. Abrasive cleaners should never be used.
Warranty: The warranty covers defects in material and workmanship for one year under normal use and service. It does not cover misuse, neglect, accident, or alterations outside the factory, nor damage caused by batteries. Warranty service is limited to bench repairs at designated locations.