eta 251.262 User Manual

COMMUNICATION TECHNIQUE
TECHNISCHE MITTEILUNG
TECHNICAL COMMUNICATION
ETA SA Manufacture Horlogère Suisse
Customer Service | Bahnhofstrasse 9 | P.O. Box 359 | 2540 Grenchen | Switzerland
Phone +41 (0)32 655 27 77 | Fax +41 (0)32 655 84 30 | etacs@eta.ch | www.eta.ch
13 ¼´´´ ETA 251.262
CT 251262 FDE 471844 07 05.07.2011
13 ¼´´´ Ø 30,00 mm
Hauteur sur mouvement Höhe auf Werk Movement height 5,00 mm
Hauteur sur pile Höhe auf Batterie Height on battery 5,00 mm
Nombre de rubis Anzahl Rubine Number of jewels 27
Fréquence Frequenz Frequency 32’768 Hz
Les travaux de réparation et de révision ne doivent être effectués que par du personnel dûment formé.
Reparatur- und Revisionsarbeiten dürfen nur von ausgebildetem Fachpersonal ausgeführt werden.
The repair and reconditioning work must only be performed by properly trained personnel.

eta 251.262 Specifications

General

Brand	eta
Model	251.262
Category	Watch
Language	English

Summary

13 1/4" ETA 251.262 Technical Overview

Repair and Reconditioning Personnel

Ensures repair and reconditioning work is performed by trained personnel only.

General Information and Safety Precautions

General Information and Technical Communication Study

Emphasizes studying the technical communication before starting work.

Eye Protection Requirement

Mandatory eye protection for all interventions and work on the movement.

Environmental Protection Requirements

Legal provisions for waste handling, disposal, and environmentally harmful substances.

Explanation of Symbols

Clarifies symbols used, including warnings for material damage.

Component List and Materials

List of Components (Detailed)

Comprehensive list of parts with article numbers and descriptions.

Component Illustrations and Materials

Visual representation of components and materials for identification.

Assembly Procedures

Handsetting and Electronic Module Assembly

Step-by-step guide for assembling the handsetting and electronic module.

Electronic Circuit and Motors Assembly

Procedure for assembling the electronic circuit and motors.

Chronograph Part Assembly

Instructions for assembling the chronograph mechanism components.

Calendar Mechanism Assembly

Guide for assembling the calendar mechanism.

Lubrication and Torque Specifications

Lubrication Recommendations

Specifies recommended oils and greases for various components.

Minimum Torque for Loosening

Provides the minimum torque value for loosening specific parts.

Counter Wheel Configurations

Electrical Tests and Measurement

Electrical Test Diagrams

Illustrations showing points and setup for electrical tests.

Electrical Test Procedures and Parameters

Detailed procedures, parameters, and conditions for electrical tests.

Chronograph Hand and Time/Date Correction

Chronograph Hand Initialization

Procedure for setting chronograph hands to zero after battery change or disturbance.

Time and Date Correction

Instructions for correcting time, date, and chronograph counters.

Hand Fitting Dimensions

Document Modification History