Pro/Forums - View Single Post - New CSP Mag pumps... do they finally have something

ferdb · 02-21-2005, 08:19 PM

I purchased 2 CSP750 MKIIs, one of which had one of the motor mount screws stripped out on arrival. Upon inspection there was very little interference between the hole and the screw threads. Either the screws were not to spec or the holes were drilled too large. I'm not surprised that the motor screws were stripping out with the marginal amount of thread engaging into the metal.

I called c-systems and they promptly sent me a new center section with motor and impeller mounted to the aluminum bulkhead. I rebuilt the motor with the supplied part and installed it a system. It ran for about 2 months before the shaft seal leaked and corroded the motor till it died. I then replaced it with the other CSP-750MII I had, but this one produced a great deal of noise when running. Either the impeller or rotor was hitting something. Other than to make sure it was not hitting the fittings I didn't bother disassembling it. I ran it for about a week and then replaced it with a DDC in frustration.

I would consider that 3 failures out of 3 for the CSP-750 MKII. At least that's my sampling. I have not returned any of these pumps as I'm not interested in constantly replacing failing pumps and I'm fairly certain a cash refund will not be forthcoming.

02-21-2005, 08:19 PM	#37
ferdb Cooling Neophyte Join Date: Sep 2004 Location: texas Posts: 68	I purchased 2 CSP750 MKIIs, one of which had one of the motor mount screws stripped out on arrival. Upon inspection there was very little interference between the hole and the screw threads. Either the screws were not to spec or the holes were drilled too large. I'm not surprised that the motor screws were stripping out with the marginal amount of thread engaging into the metal. I called c-systems and they promptly sent me a new center section with motor and impeller mounted to the aluminum bulkhead. I rebuilt the motor with the supplied part and installed it a system. It ran for about 2 months before the shaft seal leaked and corroded the motor till it died. I then replaced it with the other CSP-750MII I had, but this one produced a great deal of noise when running. Either the impeller or rotor was hitting something. Other than to make sure it was not hitting the fittings I didn't bother disassembling it. I ran it for about a week and then replaced it with a DDC in frustration. I would consider that 3 failures out of 3 for the CSP-750 MKII. At least that's my sampling. I have not returned any of these pumps as I'm not interested in constantly replacing failing pumps and I'm fairly certain a cash refund will not be forthcoming.