Compressor guides and resources

This is the library of Reddy Compressors guides: how to choose and buy a compressor, what it costs to run, how to maintain it through Indian seasons, how to troubleshoot trips and pressure faults, and where to find calculators, references and the checklists that make an enquiry quick.

Every guide here is written for people who own, run or buy industrial compressors in India: factory owners, plant and maintenance engineers, purchase teams, drilling contractors and project managers. The guides are grouped by the job you are doing, so you can go straight to the one that answers today’s question. Where a decision needs numbers, each guide links to the matching calculator in the compressed air knowledge and calculation centre.

Guides by topic

Start with the group that matches what you need to do: choose a machine, control its running cost, keep it healthy, find a fault, or plan air for a particular industry.

Choosing and buying a compressor

• Industrial air compressor selection guide: the complete method for choosing, sizing and comparing industrial and portable compressors.
• Air compressor buying checklist: what to confirm before you sign an order, from the flow basis to the scope of supply.
• Fixed-speed or VSD compressor: how to choose by your real demand profile instead of the brochure.
• Screw compressor price guide: what decides the price and how to compare quotations fairly.
• Air receiver tank price: what drives the cost of a receiver and what to check in a quotation.
• Compressor AMC price: what an annual maintenance contract covers and what changes its cost.
• Portable compressor lifecycle cost: own or rent: what a diesel machine really costs to own, and when hiring wins.
• Single-screw or twin-screw compressor for DTH drilling: how the two designs compare on drilling rigs.
• Beyond the compressor: the complete compressed air system: why dryers, filters, receivers, piping and controls decide the result.

Running cost, testing and performance

• Air compressor running cost calculator: what your compressor costs each month in electricity, and a fixed-speed versus VSD comparison.
• Compressor pump-up test and capacity check: how to measure what your compressor really delivers.
• Compressor commissioning and acceptance: a 40-checkpoint method for handing over a new or rebuilt machine.
• Standby compressor readiness test: how to prove a backup compressor will take the load when needed.
• 12 compressor myths that waste air and money: common beliefs about size, pressure, leaks and maintenance, checked against the facts.
• Compressed air rules of thumb: sixteen quick estimates, with the physics behind each and where it stops working.
• Running a VSD compressor on a diesel generator: DG set sizing, harmonics, starting and changeover.

Maintenance and seasonal care

• Compressor service kit finder: which kit your machine needs, what should be in it and when to fit it.
• Compressor log book format: daily checks and hour-meter records in printable formats.
• Compressor monsoon care: moisture load, dryers, drains, receivers and electrical damp in the rainy season.
• Separator vessel and air receiver: the two pressure vessels in every oil-injected screw compressor and how to look after them.
• Compressor noise levels: typical dB(A) by type, room acoustics and how to quieten a compressor house.
• Borewell drilling season compressor checklist: pre-season checks for rig compressors and hire planning.

Troubleshooting

• Compressor motor tripping: trips on start or while running, from amps and voltage to star-delta and overload settings.
• Pressure switch settings and safety valve lifting: cut-in, cut-out, differential and a step-by-step diagnosis.
• Compressed air troubleshooting and root-cause diagnostics: low pressure, overheating, water or oil in the air and short cycling.
• Compressor breakdown diagnostics and recovery: first actions when a compressor stops and how to get air back.

Compressed air for specific industries

• Compressed air for data centres: critical air for critical infrastructure.
• Compressed air for smart manufacturing: measured, controlled and reliable utilities.
• Industries we supply: compressed air guides for each industry we work with.

Library, references and enquiry checklists

These pages hold the reference material behind the guides, and the checklists that tell you exactly what to send so that we can quote or advise in one step.

Reference and learning

• Compressed air knowledge and calculation centre: free calculators and worksheets for sizing, energy, piping, moisture and more.
• Compressed air engineering centre: in-depth engineering guides on every part of the system.
• Compressed air learning paths: guides arranged in the order to read them.
• Compressed air FAQ centre: short answers to common questions.
• Technical reference and standards register: the standards and references used across the site.
• Engineering authors and reviewers: how our engineering content is written and checked.

Images and videos

• Compressed air equipment image library.
• Compressed air technical video library.

Finders and enquiry checklists

• Equipment and tool finder: find the right machine or calculator for your job.
• Find my part: identify a compressor spare part and check compatibility.
• Equipment selection enquiry: what to tell us when you need a new or used compressor.
• Temporary air hire enquiry: what to tell us when you need a compressor on rent.
• Service and maintenance enquiry: what to tell us when you need a service visit or repair.
• Spare parts identification enquiry: what to send for a quick spare parts quotation.
• Audit and measurement enquiry: what to send for an energy audit or measurement visit.
• Engineering consultation enquiry: what to send when you need engineering advice on a system.
• Borewell air duty enquiry: the drilling details we need to match air to a borewell.
• Technical document and data submission guide: which documents and readings to share, and how.
• Customer support and project follow-up: get a quote or ask for help.

Frequently asked questions

Where should I start if I am buying my first industrial compressor?

Start with the industrial air compressor selection guide, which explains how to work out the air you need, the pressure, the air quality and the type of compressor, and then use the air compressor buying checklist before you sign an order. Together they cover the questions that most often decide whether a compressor is right for a plant. If your demand varies through the day, read the fixed-speed or VSD guide next.

How do I find out what my compressor costs to run?

Use the air compressor running cost calculator. Enter the motor power, the loaded and unloaded hours, the working days and your own electricity tariff to get the monthly and yearly cost. The same page compares a fixed-speed compressor with a VSD compressor on your demand profile. Electricity is usually the largest cost of owning an industrial compressor, so this number is worth knowing before any repair or replacement decision.

Which guide helps when my compressor keeps tripping?

Read the compressor motor tripping guide first: it separates trips at start from trips while running and shows how to check current, voltage, star-delta timing and overload settings. If the compressor stops on pressure rather than on the motor, the pressure switch settings and safety valve guide gives a step-by-step diagnosis. For any other fault, the troubleshooting and root-cause diagnostics guide covers low pressure, overheating, water and oil in the air.

What should I send to get a quotation quickly?

Each enquiry checklist in this library lists exactly what we need for that kind of request: a new or used compressor, a compressor on rent, a service visit, spare parts, an energy audit or a borewell duty. Sending the compressor’s nameplate photographs, the working pressure, the air demand or the tools in use, the site location and the hours of running helps us reply quickly and accurately.

How Reddy Compressors helps

Reddy Compressors, at Tarnaka in Secunderabad, has worked with industrial compressors since 2002 as an independent multi-brand specialist in new and used compressors, spare parts, service and rentals. Our service engineers cover all major brands across Telangana and Andhra Pradesh, and we supply equipment across India. If a guide raises a question about your own compressor or site, send us the details and we will help.