Case studies 01 September 2023

19 50 kg (2.2 kW) to 5 ton (7.2MW) motor/reducer/ventilator assemblies

Number of project hours: 290 hours

4 technicians

Client expectation

Each year, out client, a ready-to-use cement, aggregates and concrete manufacturer, undertakes technical stoppages in order to maintain its ovens. Indeed, the cement manufacturer takes advantage of these 3-week stoppages to replace a large number of machines and thus overhaul the dismantled equipment. In order to be totally trouble-free with their running and restarting, he wished to work with a reliable partner who would:

take responsibility for the overall operation
know how to manage the electrical and mechanical parts of the drive system
provide a technical guarantee for operations allowing secure restarting
comply with the safety regulations

DV GROUP Solution

Satisfied with our expertise and our offer, our client chose to grant us the exclusivity of the replacement / overhauling of machines during its technical stoppages. This time, for our fourth collaboration, the experts from our electro-mechanical agency in Saint-Priest were mobilised for 3 weeks to process 19 machines (moto-reducers, moto-ventilators and motors) from 50 kg (2.2 kW) to 5 tons (7.2MW) and to keep to the deadline set by our client.

Work carried out

DV GROUP technical solution:

Disassembly/reassembly of 19 motor/reducer/ventilator assemblies

Site management
Implementation of safety regulations
Implementation of appropriate lifting means and transport
Electric cable dismantling / mechanical disassembly and reassembly
Swapping of couplings and hydraulic couplings
Laser alignment of direct drives and pully/belt systems
Machine trials
Site cleaning

Overhauling of 5 moto-ventilators and moto-reducers in the workshop

Monitoring of the electrical part (insulation, resistances, shock wave, index)
Monitoring of the mechanical part (bearing seats, joints, interlocking)
External and internal depollution via cleaning and steaming
Dynamic balancing of the turbines
Monitoring of reducers: lubrification, waterproofing, gearing
Changing of the bearings and SKF range joints
Anti-flash finish
Empty and loaded testing on the trial platform

Gains et bénéfices client

Global offer from DV GROUP: total management, from site preparation to a technical validation report and feedback on the experience at the end of the stoppage
Control of procedures and of the environment
Compliance with the budget and deadlines
Technical security
Establishment of a climate of trust: frequent, on-going exchanges and support from a dedicated DV GROUP contact

Expertise

We provide you with engineering, maintenance and control solutions based on our knowledge of your processes.

Our expertise

The group

Case studies