WORLD SERVICE ORGANIZATION
CALIBRES NO. 12 - PAGE 1/1
CALIBRES NO. 12
CS08-19-C-012-E A
Made by: pelrom
Date: 15.04.04
Calibres 725, 2520
REPLACEMENT OF THE CALIBRE 725 BY 2520
Problem
Unstable amplitude and irregular running.
Solution
Introduction of the calibre 2520.
Justification
An improvement to the wheel train and an increase in the moment of inertia of the balance have a
positive effect on the rate.
INTERCHANGEABILITY
Interchangeability
The calibre 2520 is based on the current version 725. The
complete movements
are interchangeable.
The technical guide
2520,
with interchangeability specifications for the spare parts, is available from
Omega.
Maintenance and lubrication specifications for the calibre 725 remain the same for the calibre 2520.
To ensure the quality and proper functioning of the movement, only Omega labelled components must
be used.
Spare Parts
In the case that a spare part of calibre 725 is marked “NO MORE AVAILABLE” in the following list,
the complete movement would have to be exchanged with calibre 2520.
Standard replacement
Omega will replace calibre 725 with calibre 2520 at a special exchange price.
The movements must be returned to Omega SA, Spare Parts International, 2500 Bienne 4,
Switzerland.
