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Positive displacement pump rust removal

PFBlowerinstall

Industrial
Mar 12, 2022
7
I have a question regarding PD blower. Maybe someone can advise. I have a roots PD blower (616 dvj) I purchased new. The unit sat for a good year or so - covered with a tarp and now im needing to clean it up (Without taking it apart) any experience with this process. quickest methods that won’t harm the lobes0B892845-E4E3-4EEB-9A82-B477E1F6987B.jpeg
 

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I would turn the rotors by hand to oil and make sure everything was free to rotate. Then spray oil into the inlet while running so that the oil suspends the rust dust and and carries it out the exhaust
 
Since it sat for a year, cleaning it without disassembling it requires a careful approach. Here’s a suggestions , that should be effective and gentle on the lobes. . 1. Use compressed air to blow off any dirt, dust, or debris from the blower, especially from the inlet and exhaust areas. This is an easy way to start without disassembling anything. 2. Once it’s clean, lubricate the moving parts with a light oil or lubricant recommended by the manufacturer to ensure smooth operation and prevent corrosion. By using these methods, you should be able to clean it up without damaging the lobes. Always avoid harsh chemicals or abrasive tools to ensure you don’t affect the performance of the blower.
 
@Compositepro thank you! Yes the shaft does rotate freely by hand. What kind of oil would you recommend for rust removal?
It’s going to be hard to run the unit without it being connected to a power source. Turning it by hand is a chore.
Because of accessibly, I am currently soaking the lobes in Evapo-rust. The alternate method (using soaked paper towels and magnets to hold in place) The outside flanges cleaned up nice with some 120 grit.
Any other suggestions welcome. Thank you in advance
 
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Since it sat for a year, cleaning it without disassembling it requires a careful approach. Here’s a suggestions , that should be effective and gentle on the lobes. . 1. Use compressed air to blow off any dirt, dust, or debris from the blower, especially from the inlet and exhaust areas. This is an easy way to start without disassembling anything. 2. Once it’s clean, lubricate the moving parts with a light oil or lubricant recommended by the manufacturer to ensure smooth operation and prevent corrosion. By using these methods, you should be able to clean it up without damaging the lobes. Always avoid harsh chemicals or abrasive tools to ensure you don’t affect the performance of the blower.

Since it sat for a year, cleaning it without disassembling it requires a careful approach. Here’s a suggestions , that should be effective and gentle on the lobes. . 1. Use compressed air to blow off any dirt, dust, or debris from the blower, especially from the inlet and exhaust areas. This is an easy way to start without disassembling anything. 2. Once it’s clean, lubricate the moving parts with a light oil or lubricant recommended by the manufacturer to ensure smooth operation and prevent corrosion. By using these methods, you should be able to clean it up without damaging the lobes. Always avoid harsh chemicals or abrasive tools to ensure you don’t affect the performance of the blower.
@Angelina12 thank you for the suggestion, I will definitely use compressed air and look into a suitable lubricant.
 
Update on using evapo-rust. Letting the soaked paper towels sit on the effected areas using magnets for six hours. I am still looking to further clean the Blower. Any and all suggestions welcome. Thank you in advance.
 

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@Compositepro thank you! Yes the shaft does rotate freely by hand. What kind of oil would you recommend for rust removal?
It’s going to be hard to run the unit without it being connected to a power source. Turning it by hand is a chore.
Because of accessibly, I am currently soaking the lobes in Evapo-rust. The alternate method (using soaked paper towels and magnets to hold in place) The outside flanges cleaned up nice with some 120 grit.
Any other suggestions welcome. Thank you in advance
It will definately be hard to turn by hand.
 
end result: I reached out to PDL blowers out of Gainesville, Georgia. They were kind enough to instruct me the proper way to remove surface rust from the lobes.
It was VERY simple.
A few hours of scrubbing work dry Scotch Brite pads (no oil or chemicals needed for cleaning)
View attachment RPReplay_Final1740467567.mov
and the lobes cleaned up PERFECT. And to ensure easy, turning slip plate, graphite lubricant. I
Have attached the video of the Roots 616 DVJ Blower rotating by hand with ease.
Thank you to everyone who replied and commented.
 
Hi,
It's never good to have rotating equipment sat in WH for a long period of time. Regular rotation by hand is necessary to avoid mechanical damage.
Pierre
 
Hi,
It's never good to have rotating equipment sat in WH for a long period of time. Regular rotation by hand is necessary to avoid mechanical damage.
Pierre
Mainly to reduce the chance of brinelling any ball or roller bearings.
 

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