New Pump: Must Break Cplng to Install. Recommendations?
New Pump: Must Break Cplng to Install. Recommendations?
(OP)
I will be working in an overseas plant in a few weeks, replacing oil and cooling water pumps in new skids over there.
New skids will consist of new pumps, motors, filters, instruments, controllers, heat exchangers, etc - plus all the associated piping, tubes, and wiring. (I wish we had room to build everything off-site, ship the skid, then install the assembled and tested unit - but there is no room to lift, move and install the skid as an assembly.
So, everything has to unbolted from teh shipping containers, moved by hand, chainfalls, and rollers to the location in the basement, then re-assembled.
Assuming everything else goes as planned (har, har), my real concern is re-establishing the alignment between the pump motors, the pump coupling, and the piping to the pump suction.
In previous jobs, the pump/seal/coupling/motor assembly arrived as a unit on the bedplate, and could be aligned and grouted on the bedplate. After it was in place, then the suction and discharge piping was built back to the pump flanges so there was no forces transferred back the pump seals.
Here? Do I start with the bolting the pump back to the new foundations "as perfect as possible" ... then start re-bolting up and aligning the other parts (coupling and seal, then motor) "out" from the pump? Or should the coupling be last thing to go in?
The shipping skids are not going to be used in the new installation, we will be modifying the existing equipment skids to hold the new pumps and motors.
New skids will consist of new pumps, motors, filters, instruments, controllers, heat exchangers, etc - plus all the associated piping, tubes, and wiring. (I wish we had room to build everything off-site, ship the skid, then install the assembled and tested unit - but there is no room to lift, move and install the skid as an assembly.
So, everything has to unbolted from teh shipping containers, moved by hand, chainfalls, and rollers to the location in the basement, then re-assembled.
Assuming everything else goes as planned (har, har), my real concern is re-establishing the alignment between the pump motors, the pump coupling, and the piping to the pump suction.
In previous jobs, the pump/seal/coupling/motor assembly arrived as a unit on the bedplate, and could be aligned and grouted on the bedplate. After it was in place, then the suction and discharge piping was built back to the pump flanges so there was no forces transferred back the pump seals.
Here? Do I start with the bolting the pump back to the new foundations "as perfect as possible" ... then start re-bolting up and aligning the other parts (coupling and seal, then motor) "out" from the pump? Or should the coupling be last thing to go in?
The shipping skids are not going to be used in the new installation, we will be modifying the existing equipment skids to hold the new pumps and motors.





RE: New Pump: Must Break Cplng to Install. Recommendations?
Have a good machinist align the motor to the pump.
Install the coupling.
Bill
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"Why not the best?"
Jimmy Carter
RE: New Pump: Must Break Cplng to Install. Recommendations?
If it were me doing it I would put alignment marks on the pump and motor shaft/bases etc so when I came to re-assemble the parts I would have a very good guide as to how they were before and as the previous poster said mount the pump first then align the motor
regards
desertfox
RE: New Pump: Must Break Cplng to Install. Recommendations?
Johnny Pellin
RE: New Pump: Must Break Cplng to Install. Recommendations?
RE: New Pump: Must Break Cplng to Install. Recommendations?
RE: New Pump: Must Break Cplng to Install. Recommendations?
Yes, good point about doweling the pump and motor to the foundation, then disconnecting the two, moving them, then remounting it with the dowel pins as a guide. But we are required to reuse the old equipment frame and foundations that are in the plant now - our shipping skid was just for shipping the new eqpt. (Drat....)
Temperatures will be relatively low - under 120 - 150 F operating levels.
RE: New Pump: Must Break Cplng to Install. Recommendations?
RE: New Pump: Must Break Cplng to Install. Recommendations?
RE: New Pump: Must Break Cplng to Install. Recommendations?
1.level and grout skid
2.bolt pump to skid
3.install and align coupling/motor
4.provide proper suction/discharge pipe support close to pump (thermal expansion piping moves away from pump)
5.install piping
6.repeat allignment when pump is at operating temperature.
RE: New Pump: Must Break Cplng to Install. Recommendations?
RE: New Pump: Must Break Cplng to Install. Recommendations?