Compressor Installation Comments

Not really. We have three 75hp compressors at work feeding into one receiver. Only trick is getting the start/stop load/unload setpoints setup the way we like them. So one runs continuously loaded, one runs and loads/unloads (they have automatic unloaders) as needed, and the third will autostart if pressure drops too far (unusual load or one of the other compressors fails).

daestrom

Running three compressors into one receiver shouldn't be a problem. Un less the site has scope for complex automation (nice, but when does that happen?) do as you have suggested. The only aside is something you haven't mentioned. What is your air board like. To have three units it would be best to have full isolation. isolation will have to be remote from the compressors for safety, with pipwork venting for maintenance.

If the system can cope, fit non return valves after the isolation valves, and have your interlocking as part of a changeover scheme/ booster scheme. Then you'll have more robust system all round,

We generally use 2 or 3 compressors into dual air receivers (so thatwe can have one out for insurance inspection with no loss of facility) judicious use of plumbing makes a very flexible system. ( Could be a damned sight better ) (Receivers at 3000psi, air system at 540psi through reducing valves, 3 compressors on a Main Standby Out of Service scheme, with run time changeover between the two in service, as well as changeover for fault ( every bloody week).

Air Blast CB's use much air...............................

Neil

Runnig three compressors into one receiver shouldn't be a problem. Un less the site has scope for complex automation (nice, but when does that happen?) do as you have suggested. The only aside is something you haven't mentioned. What is your air board like. To have three units it would be best to have full isolation. isolation will have to be remote from the compressors for safety, with pipwork venting for maintenance.

If the system can cope, fit non return valves after the isolation valves, and have your interlocking as part of a changeover scheme/ booster scheme. Then you'll have more robust system all round,

We generally use 2 or 3 compressors into dual air receivers (so thatwe can have one out for insurance inspection with no loss of facility) judicious use of plumbing makes a very flexible system. ( Could be a damned sight better ) (Receivers at 3000psi, air system at 540psi through reducing valves, 3 compressors on a Main Standby Out of Service scheme, with run time changeover between the two in service, as well as changeover for fault ( every bloody week).

Air Blast CB's use much air...............................

Neil

Runnig three compressors into one receiver shouldn't be a problem. Un less the site has scope for complex automation (nice, but when does that happen?) do as you have suggested. The only aside is something you haven't mentioned. What is your air board like. To have three units it would be best to have full isolation. isolation will have to be remote from the compressors for safety, with pipwork venting for maintenance.

If the system can cope, fit non return valves after the isolation valves, and have your interlocking as part of a changeover scheme/ booster scheme. Then you'll have more robust system all round,

We generally use 2 or 3 compressors into dual air receivers (so thatwe can have one out for insurance inspection with no loss of facility) judicious use of plumbing makes a very flexible system. ( Could be a damned sight better ) (Receivers at 3000psi, air system at 540psi through reducing valves, 3 compressors on a Main Standby Out of Service scheme, with run time changeover between the two in service, as well as changeover for fault ( every bloody week).

Air Blast CB's use much air...............................

Neil

Existing receiver has two single phase units mounted on top. They operate duty/assist/standby. They will only be required as standby when we install the new compressor. The new one is three phase, star/delta start and is a screw compressor. Is there any problem with having different types of compressor on the same air receiver, eg. screw, piston, vane. There will be no air isolation between the receiver and the existing compressors, only electrical isolation. In effect we will be pressurising the receiver and the high pressure air end of the existing compressors from the new compressor.

What you are doing will work fine, but if your new compressor is a lot larger than your current capacity, you will likely find that it will short-cycle. This will contribute to a shortened life and extra maintenance over time. If this is a concern, you should save your pop cans and scrap aluminum and copper and buy the company a larger receiver.

One customer we have didn't want a larger receiver so they added a larger air line encircling (overhead) the production floor. The piping actually serves as added capacity to their receiver.

Check you power... Will the third compressor over tax your electrical? Check this before you install your third compressor.

-Rick

We have enough power. Separate supply being run for new compressor. Thanks.