Hi there!
I am David Navarro, Maintenance Engineer, with more than 35 years of experience on maintenance in different sectors and industries.
Over the years, I’ve observed how the ranks of maintenance professionals have dwindled, becoming filled with personnel who have far more theory than practice. Generational succession in this field is practically nonexistent. However, the fact that this profession is on the verge of extinction doesn’t mean it isn’t vital to the smooth operation of an industry.
One of the things that brings me the most satisfaction is sharing my experience with others and seeing how this transfer of knowledge helps them in their daily lives. Therefore, I offer my experience to you, selflessly and without profit, with the aim of reviving this profession.
I am open to hear to your case, as long as it does not enter in conflict with my daily activities at Fawema GmbH. Let´s talk.

What is offered?
Maintenance consulting
Strategic maintenance planning
Consulting on operating and maintenance concepts
Fault analysis and root cause analysis
Optimization of maintenance processes
Training of operating and maintenance personnel
Remote video consultation
Who is behind DNtec?
-David Navarro.
-Senior Service Engineer and
Technical Trainer at Fawema GmbH.
-Maintenance Engineer since 1989.
-Available Languages: English, Spanish, German, French, Italian, Portuguese, Catalan.
Strategic Maintenance Planning
Focusing on:
- Which assets matter most to our operation?
- How much risk can we tolerate if something fails?
- When should we maintain, refurbish, or replace assets?
- How do we balance cost, uptime, safety, and performance over years?
Key elements
- Maintenance strategy selection
- Choose the right mix:
- Preventive (scheduled)
- Predictive (condition-based)
- Reliability-centered maintenance (RCM)
- Run-to-failure (where acceptable)
- Choose the right mix:
- Lifecycle planning
- Plan maintenance across the full asset life—from commissioning to replacement.
- Resource & budget planning
- Long-term staffing, skills, tools, spare parts, and capital planning.
- Risk management
- Reduce failures that cause downtime, safety incidents, or regulatory issues.
- Performance measurement
- Use KPIs like availability, MTBF, maintenance cost per unit, backlog health.
Consulting on operating and maintenance concepts (O&M)
Consulting on operating and maintenance (O&M) concepts is advisory work that helps an organization design, improve, or validate how an asset or facility will be operated and maintained—before or during its life in service.
- How the system will be run (staffing, shifts, operating modes, procedures)
- How it will be maintained (maintenance strategies, intervals, responsibilities)
- Who does what (in-house vs contractors)
- What resources are needed (people, skills, tools, spares, systems)
- How performance, safety, and compliance are ensured
It’s the bridge between design and day-to-day operations.
Fault analysis and Root Cause Analysis (RCA)
A common failure observed in the industry, is to pursuit the fault analysis, and not looking for its Root Cause.
There is a huge difference between understanding what failed and how it failed, and understanding why it failed in the first place.
In short, Fault analysis tells you what broke. RCA tells you why it was allowed to break.
Optimization of maintenance processes
What gets optimized:
1. Maintenance strategy
- Remove unnecessary PM tasks
- Shift from reactive to preventive/predictive
- Apply RCM principles
- Align task frequency with actual failure behavior
2. Planning & scheduling
- Better job plans and work packages
- Higher schedule compliance
- Fewer emergency jobs
- Right work, right time
3. Work execution
- Standardized procedures
- Right tools and spares available
- Reduced waiting and rework
- Clear roles and handoffs
4. Spare parts & logistics
- Optimize inventory levels
- Reduce stockouts and overstock
- Improve material staging
5. Use of CMMS / EAM
- Clean asset hierarchy and master data
- Meaningful failure codes
- Accurate time and cost tracking
- Data-driven decision-making
6. Skills & organization
- Right staffing and competencies
- Clear accountability
- Smarter use of contractors
7. Continuous improvement
Feed lessons back into maintenance plans
Use KPIs (MTBF, wrench time, backlog)
Apply fault analysis and RCA
Training of operating and maintenance personnel
1. Operating training
- Normal, start-up, shutdown, and emergency operation
- Understanding system limits and alarms
- Correct responses to abnormal conditions
- Energy efficiency and asset protection
2. Maintenance training
Correct installation, alignment, lubrication, calibrationExperience the fusion of imagination and expertise with Études Architectural Solutions.
Preventive and predictive maintenance tasks
Fault diagnosis and troubleshooting
Use of tools, test equipment, and CMMS/EAM
The activities, content, and information shared on this website are for informational and educational purposes only and are offered on a non-profit basis.
They are not intended for commercial gain or financial benefit.
The main objective of this site is to disseminate knowledge, facilitate access to information of interest, and promote the free and open exchange of ideas.
