eta 252.411 User Manual

COMMUNICATION TECHNIQUE
TECHNISCHE MITTEILUNG
TECHNICAL COMMUNICATION
ETA SA Manufacture Horlogère Suisse
SC Product Communication | Bahnhofstrasse 9 | 2540 Grenchen | Switzerland
Phone +41 (0)32 655 71 11 | Fax +41 (0)32 655 71 74 | contact@eta.ch | www.eta.ch
11 ½´´´ ETA 252.511
CT 252511 FDE 412647 03 20.02.2012
11 ½´´´ Ø 25,60 mm
Hauteur sur mouvement Höhe auf Werk Movement height 3,00 mm
Hauteur sur pile Höhe auf Batterie Height on battery
No. 370: 3,15 mm
No. 399: 3,75 mm
Nombre de rubis Anzahl Rubine Number of jewels 11
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.
1023
cor.
fus. hor.
252 511
252 511
SWISS V8
ELEVEN 11 JEWELS
M3
M1
M2
M4
M5
M6
R
1 imp. = 0,33 s/month
C
+
PL T
C
–
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
1
I
II
III
IV
2
3
4
5
6
7
8
9
10
11
12
31

eta 252.411 Specifications

General

Brand	eta
Model	252.411
Category	Watch
Language	English

Summary

General Information and Safety

General Information

General advice and information before starting work on the watch movement.

Environmental Protection Requirements

Legal provisions for waste handling and disposal of harmful substances.

Eye Protection Obligation

Mandatory eye protection for all interventions on the watch movement.

Explanation of Symbols

Warning about material damage and necessary precautions.

List of Components

Component Details

Detailed list of parts with article numbers, descriptions, and assembly information.

Component Illustrations

Visual Identification of Parts

Illustrations of various watch components for identification and reference.

Basic Movement Assembly

Assembly Sequence

Step-by-step instructions for assembling the basic watch movement with component references.

Handsetting Mechanism Assembly

Assembly Sequence

Step-by-step instructions for assembling the handsetting mechanism.

Time-Zone and Date Mechanism Assembly

Assembly Sequence

Step-by-step instructions for assembling the time-zone and date mechanism.

Electronic Module Assembly

Assembly Sequence

Step-by-step instructions for assembling the electronic module.

Electrical Tests

Tests with Battery

Procedure for performing electrical tests with the watch battery installed.

Tests Without Battery

Procedure for performing electrical tests without a battery, using external power.

Test Procedures and Parameters

Detailed steps, settings, and remarks for electrical tests.

Instructions for Use

Watch Appearance and Features

Description of the watch's perpetual calendar display and crown positions.

Crown Operation Guide

Instructions for operating the watch crown for various functions.

Time Zone Correction

How to adjust time zones using the crown.

Time and Second Correction

Procedure for setting hours, minutes, and seconds with stop-second function.

Calendar Correction

Methods for checking and correcting the date, month, and annual cycle.

Repair Directives

Fitting Hands and 12 o'clock Contact Detection

Procedure for fitting hands and checking the 12 o'clock contact using a voltmeter.

Battery Change and Calendar Correction

Battery Replacement and Initial Settings

Steps for replacing the battery and initial watch setup.

Month Correction Procedure

How to correct the month display after battery replacement.

Annual Cycle Correction Procedure

How to correct the annual cycle display after battery replacement.

Casing Guidelines

Handling Precautions

Guidelines to avoid altering quartz frequency and damaging electronic module during casing.

Rate Adjustment and Checking

Rate Adjustment Method

Procedure for adjusting the rate using programmed settings (Inhibition/EEPROM).

Checking Rate with Instrument

Method for checking the watch rate using a controlled battery and instrument.

Checking Rate Without Instrument

Method for checking the watch rate over one month without specialized equipment.

Manual Rate Correction

Rate Correction Procedure

Step-by-step guide to manually correct the watch rate using external power.

Hand Fitting Heights and Dimensions

Component Height Specifications

Table detailing dimensions for fitting hands and component heights over the dial seat.

Document Version History

Version Comparison Table

Table showing modifications between document versions.