Required maintenance for stored pumps
Required maintenance for stored pumps
(OP)
My company bought some KSB horizontal booster pumps with two Centrilift submersible well pumps to be installed in a water project. Due to some reasons the project was suspended for one year , all pumps are already stored in warehouses , Please , I need to know what type of maintenance or how we have to protect the pumps during the 1 year suspension period . any procedure or instructions we have to follow ?





RE: Required maintenance for stored pumps
RE: Required maintenance for stored pumps
With this new development you could have at best... 2 or 3 months left on the warranty once the pumps are commissioned
I would check with the manufacturer, get their specific recommendations and ask how much would it cost to extend the warranty until the pumps are commissioned. i.e. buy an insurance policy from the manufacturer for the equipment.
Otherwise, if they were not involved in the process and the pumps get somehow damaged... most likely they will claim the pumps were not properly stored and therefore the warranty is void... OR, most likely: expired before even starting.
saludos.
a.
RE: Required maintenance for stored pumps
Bearing housings as well as the wetted end of all pumps contain a level of vapor space inhibitor (VSI)oil. Not a big deal on bearing housings but it does require that pump case flanges be sealed with the appropriate flange and gasket...not the wooden shipping flange cover.
Exposed shafting and coupling hubs are protected with a cosmoline like grease. The stuff I'm use to using is in a spray can.
Pumps are rotated a few turns each week and the shaft position is documented.
Electric motor space heaters, if equipped, are energized.
When dealing with a large number of pumps, they may be connected to a temporary oil mist system, especially if stored outdoors.
Larger equipment such as compressors may also be N2 purged.
Collect, label and collate any manufacturers documentation attached to the equipment. Also account for the boxes that are attached to the pumps. They usually contain the coupling spacer.
RE: Required maintenance for stored pumps
RE: Required maintenance for stored pumps
Rumour has it that too frequent manual rotation of sleeve bearings can be counter productive. We all know that the majority of the wear during operation occurs during starts. When you manually rotate, it could be equivalent or more severe than a start since there is no oil film developed. At least that is what one nuke plant concluded after examining a sleeve bearing motor that failed shortly after being removed from spares and put in service. I remember a report stating there were some particles that caused the failure and they blamed those particles on the manual rotation during storage. Apparentlyl the drain/flushes performed prior to putting the motor into operation weren't enough to remove particles formed during manual rotation. I just figured I'd mention it. But most people still manually rotate.
=====================================
Eng-tips forums: The best place on the web for engineering discussions.
RE: Required maintenance for stored pumps
RE: Required maintenance for stored pumps
Phitsanulok
Thailand
RE: Required maintenance for stored pumps
When you go to install them make sure that the motor oil/water is full and turn the pump over by hand to make sure its free. Also meg the motor, but you should have not problems.