Why corrections matter in engineering content
People use project records to make decisions: whether a pressure reduction is worth trying, what size of compressor suits a blasting job, whether a leak programme is likely to pay. A wrong figure can lead a plant engineer to undersize a machine, set a pressure too low or expect a result the system cannot deliver. Quietly editing the page afterwards hides the fact that earlier readers were misled.
Our approach is simple. Small typing errors are fixed without fuss. Anything that could change a reader’s understanding or decision is corrected visibly, with a short note. Records we can no longer stand behind are taken down, with a notice where that is appropriate.
Correction, update or withdrawal: which applies?
| Type | When it applies | Examples | What the reader sees |
|---|---|---|---|
| Editorial fix | A typo or wording issue that does not change meaning | Spelling, a broken link, formatting | The fixed text, no notice needed |
| Correction | A published statement was wrong or misleading | Wrong pressure, bar and psig confused, misidentified equipment, a claim without evidence | Corrected text plus a dated correction note |
| Update | New information adds to a record that was right when written | A later persistence check, extra operating hours, changed permission | New information marked with its date |
| Withdrawal | The record cannot be defended or must be removed | Unreliable source data, consent withdrawn, unsafe advice | Removal, with a notice where lawful and safe |
Common errors in compressed-air project records
Some mistakes appear again and again in technical writing about compressors. We check for them before publication and correct them when found afterwards:
- Pressure units mixed: bar and psi, or gauge and absolute. 1 bar is 14.5 psi, so 7 bar(g) is 101.5 psig, not 100 psia.
- Flow references confused: free air delivery (FAD) against displacement, cfm against m³/min, or normal against actual conditions.
- Power figures quoted without a boundary: compressor package only, or including dryer, fans and ventilation.
- Savings calculated on the wrong basis: a percentage of one machine presented as a percentage of the station, or a modelled figure presented as measured.
- Equipment misidentified: wrong make, model or rating from an unclear nameplate.
- Rules of thumb treated as results: for example, the typical figure of about 7% more power per extra bar used as if it were a measured saving.
- A customer quote or outcome published without clear permission.
How serious is the error?
We classify each issue by its potential effect on the reader, not by how awkward it is for us. The classification decides how quickly we act and what notice we give.
- Editorial: no change in meaning. Fix at the next edit.
- Minor technical: a clarification that would not change a decision. Correct and note briefly.
- Material technical: could change equipment selection, settings or expected performance. Correct promptly with a visible note.
- Safety-related: could lead to unsafe practice, such as pressure testing advice or a missed protection setting. Correct or remove immediately, with a clear notice.
- Consent or privacy: a client, person or site is identifiable without permission. Remove the detail at once.
- Authenticity: the underlying evidence is unreliable. Withdraw the record pending review.
How errors come to light
Errors are found in many ways: a customer or reader pointing one out, a service engineer reviewing older pages, a recalibrated instrument changing earlier readings, a corrected logger export, new information from a manufacturer, or a client changing their permission. We welcome all of them. Anyone who spots a problem can contact us by phone, WhatsApp or email, and we will look at it on its merits.
When an issue is raised, we record what was reported, by whom (kept private), the date, and the evidence offered. A service engineer then reviews the claim against the original records before any change is made.
How we make a correction
- Check the original source: survey sheets, logs, service reports, photographs and calculations behind the published claim.
- Decide whether the published statement is wrong, incomplete or still correct, and classify the issue.
- Write the corrected wording and check every related statement on the page, including tables, captions and FAQs.
- Look for the same error on other pages that reuse the figure or project.
- Publish the correction with a short, dated note explaining what changed.
- Keep a private copy of the previous version and the reasons for the change.
A correction note is plain and factual. For example, a dated note might read: “Correction: the operating pressure was previously shown as 10 bar; the site records show 7 bar (101.5 psig). Related flow figures have been checked and are unchanged.”
The note sits close to the corrected statement, not hidden at the foot of the page, and it carries the date of the change. Where a correction affects a table, the note names the row or value concerned. We do not reword the rest of the page at the same time, because mixing a correction with general editing makes it harder for readers to see what actually changed.
Keeping related pages consistent
A single project may appear on several pages: an evidence record, an industry page, a rental page or a case summary. When one changes, all must change. We keep a simple index of where each project and figure appears, so that a corrected pressure or a withdrawn claim does not survive elsewhere on the site. The same applies to consistent engineering figures we use across pages, such as the typical oil-injected screw discharge temperature of about 75–95 °C or the typical refrigerated-dryer pressure dew point of about +3 °C.
Updates to records that were right when written
Sometimes a record was accurate but is no longer complete. A leak programme may have a later persistence check, a rental job may have been extended, or a client may now agree to be named. These are updates, not corrections. We add the new information with its date and leave the earlier content in place, so readers can see how the picture developed. If an update weakens an earlier result, for example a persistence check showing that leaks returned, we say so plainly rather than leaving only the better figure visible.
When a record is withdrawn
We withdraw a record if its evidence turns out to be unreliable, if the client withdraws consent in a way that requires removal, or if it contains advice that could lead to unsafe practice. Where it is lawful and safe, a short notice explains that the record has been withdrawn and, in general terms, why. We do not replace it with a reworded version that makes the same claim on weaker evidence.
How Reddy Compressors helps
We have been in the compressed-air business since 2002, working from our office at Tarnaka, Secunderabad, with service teams across Telangana and Andhra Pradesh and supply of compressors, rentals and spares across India. We sell, rent and service machines of ELGi, Atlas Copco, Ingersoll Rand, KAESER, Chicago Pneumatic and other makes as an independent multi-brand specialist, not an authorised dealer. We have tie-ups with all major and reputed brands.
The same discipline applies to the reports we prepare for customers. If an audit report, service report or recommendation we have issued is found to contain an error, we will review it against the records and issue a corrected version with the change identified. If you believe anything on our website is wrong, including a figure, a description of our work or a detail about your own site, please tell us and we will check it.
What to send us
- The page address and the statement you believe is wrong.
- What you think the correct information is, and why.
- Any supporting document, reading or photograph you can share.
- Whether the issue involves your own site, staff or consent.
- How you would like us to contact you about the outcome.
Frequently asked questions
How do I report an error on a compressor project page?
Contact us by phone, WhatsApp or email with the page address, the statement you think is wrong and, if possible, the correct information or a supporting document. A service engineer will check the claim against our original records. If it is wrong, we will correct it with a dated note; if it is right, we will explain the basis for it. Your identity is kept private.
What is the difference between a correction and an update?
A correction fixes something that was wrong or misleading when published, such as a mistyped pressure or a saving presented as measured when it was modelled. An update adds new information to a record that was accurate at the time, such as a later follow-up check or an extended hire period. Both are dated, but only a correction admits an earlier error.
Why not simply edit the page without a note?
Because readers may already have relied on the earlier figure. If a pressure, flow or saving changes without explanation, anyone comparing the page with their own notes cannot tell whether they misread it or the page changed. A short dated note shows what was revised and why, which is fairer to readers and builds trust in the rest of the content.
Can a client ask for their project to be removed?
Yes. If a client withdraws permission for their project or details to be published, we remove the identifying information or the whole record as required. We publish project records only with permission and normally in anonymised form, describing the work by sector and region. Removing a record for consent reasons does not imply that the engineering in it was wrong.
Do you correct audit and service reports as well as web pages?
Yes. If a report we issued contains an error, such as a wrong reading, unit or calculation, we review it against the original records and issue a revised version that identifies the change. The earlier version is kept on file so the history is clear. Recommendations that depended on the corrected figure are checked and revised where needed.
What happens if a later check weakens a published result?
We add the later result as a dated update and say plainly what it shows, even if it is less favourable, for example a follow-up leak survey finding that some leaks have returned. Leaving only the better early figure visible would mislead readers. Where the later evidence means the original claim can no longer be supported, the record is corrected or withdrawn.
Related pages
Technical content reviewed by D. Srinivas Reddy, Managing Partner and service engineer, Reddy Compressors. Last updated 17 October 2026. How our engineering content is reviewed.