Progressing Cavity Pump Maintenance Space
Progressing Cavity Pump Maintenance Space
(OP)
I am working on a construction project with some small progressing cavity pumps. The electrical contractor installed conduits in the footprint where the maintenance technician must stand (i.e., just beyond the stator pull clearance on the discharge side of the pump) in order to remove the stator from the rotor. It has been proposed that since these pumps are small that maybe the normal PC pump stator pull clear area is not as critical as it normally is for the labor intensive rotor-stator change out. I am looking for information on how to clearly describe/quantify/illustrate the level of effort involved in removing a stator from one of these pumps. I am especially interested in worst case scenarios. I do not want to install a pump that will be a problem for the end user. Thank you in advance for any feedback that you may be able to offer!





RE: Progressing Cavity Pump Maintenance Space
We know nothing about your installation, but as a side note, remember these pumps can be installed vertically to help save footprint.
RE: Progressing Cavity Pump Maintenance Space
RE: Progressing Cavity Pump Maintenance Space
When you say 'small', what do you mean?
RE: Progressing Cavity Pump Maintenance Space
DubMac and Bimr: Good points. The manufacturer should be consulted.
TenPenny: The pumps are 3 HP (TYP of 3) and 15 HP (TYP of 2); roughly 3-ft and 5-ft long respectively. I suspect that you are right with respect to the smaller pumps in that they may be able to be swapped out with a functional pump while the pump in need of maintenance can be worked on in a shop where the conditions are more conducive. The larger pump is expected to be more of a headache.
Anybody else out there have any data/studies/references related to the effort (e.g., time, materials, forces, tools involved) in performing a rotor stator swap out for a conventional horizontal installation of a 3 and 15 HP PC pump?
RE: Progressing Cavity Pump Maintenance Space
RE: Progressing Cavity Pump Maintenance Space
Just food for thought.