RECD installation service for DG setChoosing an is not simply a matter of deciding between a large company and a local technician. The more important question is whether the person or team performing the work understands the selected RECD, the DG engine, the existing exhaust arrangement and the manufacturer's installation requirements.

A certified or manufacturer-supported technician may offer stronger product-specific knowledge, while an experienced local technician may provide faster regional service and lower travel costs. The right choice depends on the project's technical complexity, warranty conditions, site location and support requirements. CPCB has published a procedure for emission-compliance testing of Retrofit Emission Control Devices for diesel power-generating-set engines up to 800 kW gross mechanical power. The procedure was revised on July 24, 2023. For 2026 projects, installation decisions should be based on the specific DG and RECD model, with current official requirements verified separately.

Certified Technician vs Local Technician

certifiedThe word can mean different things depending on the supplier.

A technician may be:

Employed directly by the RECD manufacturer
Authorized by the manufacturer
Trained by a manufacturer or service partner
Experienced through independent field work
A local mechanical or exhaust specialist

Likewise, being a local technician does not automatically mean poor installation quality.

documented competence, product familiarity and responsibilityThe comparison should therefore focus on , rather than job title alone.

What Should a Technician Know Before Starting?

Before anyone comes to the site, the technician or service provider should have access to:

DG manufacturer
Engine manufacturer
Engine model
Gross mechanical power
DG rating
Existing exhaust dimensions
RECD manufacturer
Exact RECD model
Installation requirements

A technician who receives this information in advance can prepare the correct tools, fabrication components and installation approach.

1. Manufacturer-Supported Technicians

A manufacturer-supported technician can be particularly useful when the RECD installation is product-specific.

Potential advantages include:

Product Familiarity

The technician may already know the exact model, mounting arrangement and installation instructions.

Documentation Access

The technician may have access to manufacturer-specific installation procedures.

Warranty Coordination

If the installer is authorized, the customer may have a clearer route for resolving installation-related warranty questions.

Technical Escalation

If an unusual problem occurs, the technician may be able to consult the manufacturer directly.

These advantages can be valuable for complicated or high-value installations.

However, customers should verify the technician's actual authorization rather than relying on a verbal claim.

2. Authorized Service Partners

A manufacturer may use authorized installation or service partners rather than sending its own employees to every location.

This can provide a useful middle ground:

Regional service availability
Manufacturer-backed technical procedures
Local response
Product-specific training

Before selecting such a provider, ask:

“Are you officially authorized or trained by the RECD manufacturer for this product?”

Request written confirmation where appropriate.

3. Experienced Local Technicians

A local technician can be a practical choice when the person has relevant DG exhaust and retrofit experience.

Potential advantages include:

Faster site visits
Lower travel costs
Knowledge of local contractors
Easier scheduling
Quick response for minor fabrication work

However, local experience with general DG exhaust systems does not automatically mean experience with your specific RECD.

Ask for examples of similar installations.

4. Product Experience Matters More Than Job Title

Instead of asking only:

“Are you certified?”

ask:

“Have you installed this exact RECD model or a comparable model on a similar DG?”

Then ask:

What engine power range?
Which exhaust arrangement?
How was fabrication handled?
Who performed commissioning?
What documentation was provided?

This gives you a much better indication of practical competence.

5. Check Manufacturer Instructions

The installer should work according to the applicable product documentation.

Request:

Technical datasheet
Installation manual/instructions
Mounting requirements
Exhaust connection details
Maintenance guidance

CPCB's RECD procedure establishes a technical testing and type-approval framework, including parameters associated with exhaust-system performance.

The installer should therefore follow the product-specific requirements rather than applying the same method to every DG.

6. Exhaust Expertise Is Important

A good RECD installer should understand the existing exhaust arrangement.

The team may need to assess:

Pipe diameter
Flanges
Silencer
Pipe routing
Bends
Supports
Available space
Maintenance access

CPCB's published testing documentation includes exhaust back pressure as a relevant parameter.

That makes proper exhaust assessment an important installation consideration.

7. Compare Fabrication Capability

Sometimes the main difference between two technicians is not the RECD itself but their ability to complete the associated fabrication work.

Ask whether the team can handle:

Flanges
Pipe sections
Bends
Mounting brackets
Supports
Welding
Site modifications

A technician who can coordinate fabrication and installation may reduce the need to manage several contractors.

8. Warranty Is a Major Differentiator

Before hiring a local technician, determine how the installation affects the product warranty.

Ask the manufacturer or supplier:

“Is installation by this technician accepted under the product warranty?”

Then clarify:

Authorized installer requirement
Installation documentation
Warranty start date
Installation-related exclusions
Responsibility if a problem occurs

If the warranty specifically requires manufacturer-authorized installation, this should be respected.

9. Commissioning Responsibility

One common area of confusion is commissioning.

The product may be installed by one party but commissioned by another.

Ask:

Who performs commissioning?

Who signs the commissioning report?

Who is responsible if an issue is identified during commissioning?

Is commissioning included in the installation quotation?

A clearly defined handover process reduces disputes.

10. Documentation Separates Professional Service From Informal Work

A reliable installation should leave a record.

After completion, request:

Installation report
Commissioning report
RECD model
Serial number
DG identification
Installation date
Warranty information
Maintenance instructions

A technician who cannot provide any documentation may not be suitable for a formal industrial project.

11. Local Does Not Automatically Mean Less Reliable

A local technician can be a strong option when the person has relevant experience and a clear relationship with the equipment supplier.

For example, local support can provide:

Quick site attendance
Lower travel cost
Faster emergency response
Easier follow-up visits
Better familiarity with local industrial facilities

The key is to verify competence and product support.

The correct question is not:

“Is the technician local?”

It is:

“Can this technician install and support this specific RECD correctly?”

12. Certified Does Not Automatically Mean Better

Similarly, a technician described as “certified” should still be evaluated.

Ask:

Certified by whom?
For which product?
When was the training completed?
Does the certification cover installation?
Is the certification currently valid?
Can supporting proof be provided?

A certificate without relevant product experience is not necessarily enough.

13. Ask for Similar Project Experience

A good selection method is to ask for experience with similar applications.

For example:

DG power: 250–300 kW

RECD model: ______

Installation environment: Industrial facility

Then ask:

“Have you completed installations of a similar type?”

Relevant experience can be more informative than a general number of years in business.

14. When a Certified/Manufacturer-Supported Team Is Preferable

A manufacturer-supported or authorized team may be preferable when:

The RECD is unfamiliar
The installation is technically complex
The DG is high-value
Extensive fabrication is required
Warranty conditions are strict
Multiple DGs are involved
The project is compliance-sensitive

The additional service cost may be worthwhile if it reduces installation uncertainty.

15. When a Local Technician May Be Practical

A capable local technician may be suitable when:

The RECD manufacturer permits independent installation
The technician has demonstrated relevant experience
The installation is straightforward
The warranty does not require a specific installer
Local response time is important
Fabrication is a major part of the project

Before choosing this option, obtain confirmation from the product supplier regarding warranty and installation requirements.

16. Consider Total Cost, Not Technician Charges Alone

The cheaper technician may not be the cheaper project.

Compare:

Technician fee

Travel

Fabrication

Equipment handling

Commissioning

Future service

A manufacturer-supported installer may charge more upfront but provide better warranty coordination or documentation.

A local technician may charge less while reducing travel expenses.

Compare the complete package.

17. Installation for Industrial DG Sites

RECD system for industrial generatorsFor an , technician selection becomes more important when the site has:

Multiple generators
Restricted access
Complex exhaust systems
Production shutdown windows
Safety requirements
Multiple service contractors

Industrial installations benefit from clear coordination between the facility, RECD supplier, fabricator and installer.

The technician should understand the site's operational restrictions before work begins.

18. Check Safety Competence

Before allowing outside technicians onto an industrial site, verify that they can follow the facility's safety procedures.

Depending on the project, these can involve:

PPE
Electrical isolation
Hot-work permits
Working-at-height procedures
Lifting arrangements
Fire-safety controls
Restricted-area access

The facility should communicate its site requirements before the work begins.

19. Verify the Exact Product Before Installation

Regardless of who installs the equipment, confirm:

Manufacturer
Model
Quantity
Product identification
Applicable DG
Supporting technical documentation

This is particularly important if multiple RECD models are supplied by the same company.

Never allow a technician to install an unidentified device simply because it “looks like the right one.”

20. Ask About Post-Installation Support

The installation team should not disappear immediately after handover.

Ask:

Who handles future technical issues?
Is the local technician available for service?
Does the manufacturer provide support?
Are spare parts supplied locally?
How are warranty claims handled?

A clear support model is one of the most useful indicators of a professional installation arrangement.

21. What Should the Installation Quotation Include?

Request a written quotation listing:

Site Work

Site survey
Exhaust measurement
Fabrication
Installation

Technical Work

Mounting
Relevant connection work
Commissioning

Commercial

Labour
Travel
Materials
Taxes
Other charges

Support

Warranty coordination
Post-installation service

This makes certified and local service options much easier to compare.

22. Don't Skip the Site Survey Just Because the Technician Is Experienced

An experienced installer may understand DG systems very well, but site conditions can still differ.

The survey should verify:

Actual exhaust dimensions
Mounting space
Access
Support conditions
Required fabrication

This is especially important when the technician has never visited your particular facility.

23. Understand CPCB-Related Responsibilities

CPCB's RECD procedure provides a framework for testing and type approval of applicable RECDs. It should not be interpreted as a simple installer certification program or as proof that any individual technician is automatically authorized by CPCB.

For this reason, be cautious if an installer claims:

“I am CPCB certified, so any installation I perform is automatically compliant.”

Instead, verify:

Product
Manufacturer
Applicable documentation
Installation requirements
Current regulatory requirements

For 2026 projects, use current official CPCB information and applicable State/UT requirements.

24. Ask These Questions Before Hiring a Technician

1. Who trained or authorized you for this RECD?

2. Have you installed this exact model before?

3. How many similar DG installations have you completed?

4. Do you provide a site survey?

5. Can you perform the required exhaust fabrication?

6. Who performs commissioning?

7. Will the manufacturer recognize this installation for warranty purposes?

8. What documentation will you provide?

9. What post-installation service is available?

10. Who supplies spare parts?

These questions provide a stronger basis for comparing installers.

25. Before the Installation Starts

Confirm:

Exact RECD model verified
Installer identity verified
Authorization/training checked where relevant
Site survey completed
Exhaust dimensions confirmed
Fabrication scope agreed
DG shutdown scheduled
Safety requirements communicated
Warranty conditions confirmed

26. After the Installation

Before accepting the work:

RECD model recorded
Serial number recorded
Exhaust connections inspected
Mounting checked
Relevant controls/connections checked
Commissioning completed
Installation report received
Warranty documentation received
Maintenance instructions received
Service contact recorded

Final Thoughts

competence, product familiarity, warranty requirements, documentation and long-term supportRECD installation service for DG setThe best technician is not necessarily the one with the most impressive title or the lowest rate. It is the one with the right product knowledge, relevant DG experience, clear responsibility and dependable support.Choosing between a certified/manufacturer-supported technician and an experienced local installer should be based on . A certified or authorized team can offer stronger manufacturer coordination and product-specific knowledge. An experienced local technician can provide faster response, lower travel costs and flexible site support. Neither option should be selected solely because of its label. For a , the most important question is whether the installer can correctly assess the DG, follow the selected product's installation requirements, complete the necessary fabrication and provide documented commissioning and support. Before making a 2026 installation decision, verify the current official CPCB information, the exact product documentation and any applicable State Pollution Control Board, Pollution Control Committee or other competent-authority requirements.

RECD Installation Service for DG Set — Certified vs Local Technicians

A Side-by-Side Look at Certified vs Local Installation to Help You Decide What's Right for Your DG Set