Why a relocated compressor is not automatically a good fit
A compressor, dryer or receiver that served one plant well was matched to that plant’s demand, pressure, climate, electrical supply and room. When the asset moves, every one of those conditions can change. The machine is the same; the duty is new.
Typical differences we see when equipment moves between sites in Telangana, Andhra Pradesh and other states include:
- Demand profile: a base-load machine at the old site may become a trim or standby machine at the new one, or the reverse.
- Pressure: the new plant may need 8.5 bar (123.3 psig) at the header where the old one ran at 7 bar (101.5 psig). Each extra bar costs about 7% more power and may exceed the package rating.
- Ambient and cooling: a machine moved from a ventilated shed to a closed room in a 45 °C Indian summer can trip on high discharge temperature.
- Power supply: voltage, fault level, starter type and cable size at the destination may not match the motor and starter you are moving.
- Air quality: a compressor that fed general plant air may now feed a pharma or food line that needs a defined ISO 8573-1 class.
Relocation is therefore an engineering decision first and a logistics job second.
Is the machine worth moving?
Before paying for dismantling, cranes and transport, confirm that the asset is worth relocating. A short suitability review at the source site saves money and avoids moving a problem to a new plant.
| Question | What we look at | Red flag |
|---|---|---|
| Does the capacity suit the new demand? | FAD at the required pressure against measured or estimated demand at the destination | Machine will run mostly unloaded or will be permanently short |
| Is the airend healthy? | Running hours, discharge temperature trend, noise, vibration, oil condition, overhaul history | Rising temperature, bearing noise or overhaul already due |
| Is the motor and starter suitable? | Nameplate voltage and kW, starter type, insulation test results | Mismatch with destination supply or poor insulation |
| Are parts still available? | Make, model, serial and controller version | Obsolete controller or hard-to-source airend |
| Is the dryer sized for the new conditions? | Rated flow, inlet temperature, ambient correction | Dryer overloaded in summer at the new site |
| Is the receiver documentation complete? | Nameplate, design pressure, safety valve, inspection records | Missing records or corrosion |
If several red flags appear, compare the move with a used or new machine sized for the destination. Sometimes a refurbished unit or a new compressor is the better lifecycle choice, and the old machine can be redeployed as standby elsewhere or retired.
What to record at the old site before removal
The single most common relocation mistake is disconnecting a machine without capturing how it was running. Once it is on a truck, that evidence is gone. Before removal, record:
- Running and loaded hours, last service date and the parts changed.
- Discharge temperature, oil pressure, unload and load pressures, and motor current at normal load.
- Fault and alarm history from the controller.
- Controller, VSD, sequencer and dryer settings, photographed or backed up.
- Photographs of the piping, cabling, drains and foundations as connected.
- Known defects, oil leaks and pending repairs.
This becomes the “as-left” baseline. When the machine starts at the new site, you can compare readings and tell quickly whether a change is caused by the new installation or by the move itself.
How to remove, preserve and transport the equipment
Good removal protects the machine from damage, contamination and corrosion during transit and storage. A practical sequence is:
- Isolate electrically and pneumatically under the site’s permit-to-work system, and vent all stored pressure, including the receiver, separator tank and dryer.
- Drain condensate and, where the transport time or storage period is long, decide whether to drain or retain the oil based on the manufacturer’s preservation advice.
- Blank all open ports, inlet and discharge connections to keep dust and moisture out. Dust is a serious risk on Indian roads and dusty sites.
- Secure loose parts, control panels and coolers; lock rotating parts where advised.
- Lift only at the designated lifting points with suitable equipment and a lift plan.
- Tie down on the vehicle so the package frame, not the canopy or cooler, takes the load.
- If the equipment will be stored, keep it covered, dry and off the ground, and rotate the airend periodically where the maker recommends it.
Receivers and pressure vessels need extra care. Damage, dents or corrosion found after transport should be assessed before the vessel is returned to pressure.
Engineering the destination installation
The new installation should be designed for the new duty, not copied from the old layout. Points to check:
- Room and ventilation: enough cooling air for the compressor and dryer, with hot air ducted out so it does not recirculate. Allow for peak summer ambient.
- Foundations and access: level base, clearance for cooler cleaning, filter changes and airend removal.
- Electrical: correct cable size, protection settings, earthing and starter for the destination supply, checked by a competent electrician.
- Piping: correct header size, drop legs, isolation valves and a bypass where needed, so pressure loss is kept low.
- Air treatment: dryer and filters suited to the new air-quality class and the new inlet temperature.
- Condensate: working drains and an oil–water separator for oil-injected systems.
- Controls: where the machine joins a multi-compressor system, set its role (base, trim or standby) and pressure band so it does not fight the existing machines.
Recommissioning at the new site
Recommissioning proves the relocated equipment works safely and meets the new duty. It is not just pressing start.
- Pre-start checks: oil level, belt or coupling condition, rotation direction, drain function, safety valve, guards and emergency stop.
- Electrical checks: supply voltage, phase sequence, insulation resistance and protection settings.
- Controlled first start, watching for leaks, abnormal noise, vibration and temperature rise.
- Load and unload test across the set pressure band.
- Safety shutdown test: high discharge temperature and other protections should operate as designed.
- Performance run at real demand, recording discharge temperature (typically about 75–95 °C for an oil-injected screw), current, pressure and dryer dew point.
- Comparison with the as-left readings from the old site.
- Handover with updated drawings, settings, and a fresh maintenance plan.
For the detailed acceptance method, see our commissioning, start-up and acceptance page linked below.
Common faults after a move and what usually causes them
| Symptom after relocation | Likely cause | First check |
|---|---|---|
| High discharge temperature trips | Poor ventilation, hot-air recirculation, blocked or damaged cooler | Room airflow, cooler fins, ambient at the inlet |
| Low pressure at users | Undersized header, new pressure losses, machine too small for new demand | Pressure at compressor versus point of use |
| Motor overload or starter trips | Low supply voltage, wrong overload setting, cable too small | Voltage under load, protection settings |
| Water in the air lines | Dryer overloaded at new inlet temperature, failed drain, no drop legs | Dryer dew point, drain operation |
| Oil carry-over | Separator element damaged, wrong oil level, scavenge line issue | Separator pressure drop, oil level |
| Short cycling | Pressure band too narrow, small receiver, control conflict with other machines | Settings, receiver volume, sequencing |
Relocation, redeployment and temporary cover
Relocation often happens while production must continue. If the machine being moved is the plant’s only supply, or if the new site needs air before the installation is ready, plan temporary cover. A rental compressor and dryer can bridge the gap while the relocated equipment is installed and recommissioned. Redeployment of a spare machine to another plant also deserves the same review: a standby unit that sat idle for months may need oil, filters and a check of seals before it takes a duty role.
How Reddy Compressors helps
Reddy Compressors is an independent multi-brand compressed-air specialist based at Tarnaka, Secunderabad, serving industry since 2002. We work on Atlas Copco, Ingersoll Rand, ELGi, KAESER, Chicago Pneumatic, Gardner Denver, Sullair, Doosan, Kirloskar and other makes; we are not an authorised distributor of any brand. We have tie-ups with all major and reputed brands. For relocation and redeployment, our team can:
- Inspect the machine at the source site and give a straightforward view on whether it is worth moving.
- Record the as-left condition and settings before disconnection.
- Support dismantling, preservation and transport planning.
- Review the destination room, piping and air treatment for the new duty.
- Recommission the equipment and record a new baseline.
- Supply rental compressors from our own fleet (50–2,000 cfm, 2–30 bar) as temporary cover, plus spare parts and service or AMC afterwards.
Our service teams of more than 20 service engineers and technicians cover the whole of Telangana and Andhra Pradesh, and we supply equipment, rentals and spares across India. Call +91 99590 60718 or +91 92468 88812, or email reddycompressors@gmail.com.
What to send us
- Make, model, serial number and a nameplate photograph of each item to be moved.
- Running hours and recent service history.
- Current and destination locations, with photos of the new room or site.
- Required flow and pressure at the new site, and the air quality needed.
- Destination power supply details and any timing constraints for production.
Frequently asked questions
Can I move my air compressor to a new factory myself?
Moving the package is possible with a good rigging contractor, but the engineering steps are what protect the machine. Vent all pressure, record settings and condition, blank every opening, lift at the designated points and plan the new room, power and piping before the truck arrives. Recommissioning should then be done by someone who knows the machine, with load, safety and performance checks recorded before the compressor takes full production duty.
What should be checked before relocating a screw compressor?
Check whether its free air delivery at the required pressure suits the new demand, and whether the airend, motor and controller are in good condition. Review running hours, discharge temperature trend, oil condition and overhaul history. Confirm the destination supply voltage and starter suit the motor, and that the dryer and receiver are suitable for the new duty. If major repairs are already due, compare the move with a refurbished or new machine.
Why does my compressor overheat after moving it to a new site?
The usual causes are poorer ventilation, hot exhaust air recirculating to the inlet, a higher room temperature or a cooler damaged or blocked during transport. In Indian summers, a closed room can easily push the machine past its high discharge temperature limit. Check room airflow and ducting, clean the cooler, confirm the oil level and grade, and compare discharge temperature with the readings recorded before the move.
Do I need a new dryer when I relocate a compressor?
Not always. The existing dryer can usually move with the compressor if it is in good condition and sized for the new conditions. Check its rated flow against the compressor output, correct it for the new inlet and ambient temperatures, and confirm the air-quality class the new users need. A dryer that coped at a cooler site may be overloaded in a hot room, which shows up as water in the lines.
How do I keep production running while a compressor is relocated?
Plan temporary air before the machine is disconnected. A rental compressor of suitable flow and pressure, with a dryer where air quality matters, can be connected to the existing header through a temporary tie-in. Once the relocated machine is installed and recommissioned at its new location, the rental unit is removed. Agreeing the switchover sequence in advance avoids pressure dips and unplanned downtime.
What is recommissioning of a compressor?
Recommissioning is the structured start-up of equipment that has been moved, stored or out of service. It covers pre-start mechanical and electrical checks, a controlled first start, load and unload tests, safety shutdown tests and a performance run at real demand. Readings are compared with earlier records, settings are updated for the new duty and a new maintenance baseline is set before handover.
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.