LEGRAND DMX3 Maintenance Guide

43
DMX
3
- Maintenance guide
Whenever the product is used / installed in differ-
ent condition than IEC standard, it is recommend-
ed to plan a periodical maintenance according
with this guide, in order to:
- Check the efficiency of product
- Identify parts / accessories damaged
- Prevent emergency
It is recommend to record the maintenance activ-
ity done on every breaker
In the following tables are summarized the level 1
and level 2 maintenance and respective frequency.
Level 1 can be performed by trained customer
technicians and is completely explained in this
maintenance guide
Level 2 is not object of this maintenance guide
and to perform this maintenance level is necessary
to contact LEGRAND service.
Level 1 Maintenance
Maintenance intended to be used by trained and
qualified customer technicians who are familiar
with safety standards requirements for circuit
breaker and distribution system. These level 1 pro-
cedures are explained in this maintenance guide
* must be checked after 200 “draw-out/draw-in” cycles
Level 1 Maintenance - Explained in this maintenance guide
2. Frequency of maintenance
Check
Frequency-time Frequency-cycles
Procedure
1 year 2 years at In
Without
current
Mechanism MCH
- Correct working and lubricating • 5000 5000 MCH-I
- Check the seals • 5000 5000 MCH-II
- Check the position • 5000 5000 MCH-III
Anti-shock opening spring • 5000 5000 SCK
Arc chutes • 1000 - CTS
Main contacts MNC
- Visual • 1000 5000 MNC-I
- sequence • 1000 5000 MNC-II
Draw-out system * DWT
- Check the correct working • 5000 5000 DWT-I
- Insulation shutter • 5000 5000 DWT-II
- Cluster contacts • 5000 5000 DWT-III
- Sliding aux contacts • 5000 5000 DWT-IV
- Lubrication of draw-out chassis • 5000 5000 DWT-V
- Draw-out mechanism • 5000 5000 DWT-VI
Terminals • 5000 5000 TRM
Auxiliary AXL
- Visual check • 5000 5000 AXL-I
- Functional Test: • 5000 5000 AXL-II
Motor drive CC ST UVR ECSR
- Functional test • 5000 5000 ECSR-I
- Lubricating of motor gear • 5000 5000 ECSR-II
Mechanical Accessories MCSR
- Open position lock • - - MCSR-I
- Draw-out shutter lock • - - MCSR-II
Mechanical interlock • 100 100 NTK
Trip Unit • - - PRT

LEGRAND DMX3 Specifications

General

Brand	LEGRAND
Model	DMX3
Category	Industrial Equipment
Language	English