I installed my current Circulating Pumps CP53 CH pump 10 years ago and it is still going strong, although to make it last I have used the slowest speed setting of 1. My previous pump only lasted about 5 years, also set on speed 1, consequently I am thinking of replacing the pump as in the past I have had a pump fail 3 days before Christmas
There is a Circulating Pumps CP53 available on the net, but according to the Circulating Pumps website they have not been allowed by the EU to manufacture one since January 2013, and consequently that pump is at least 3 years old. I am tempted to buy that pump rather than the CP50 as I wonder if lowering the energy consumption may affect the life of the pump. The other thing that I note is, that the original CP53 pump came in a sealed box, but having had a look at the CP50 in Plumb Centre, it does not appear to come in a sealed box.
Consequently, I was wondering if anyone has experience of, or comment on the new low energy Circulating Pumps CP50? I am only concerted about the life of the pump and not operating costs.
EDIT:
The axis on Performance Curve supplied with the original CP53 are Q(m3/hr) against H(m) but the graph on:-
http://www.pumpsalesdirect.co.uk/media/wysiwyg/datasheets/cp50.pdf
Appears as Q/m3/hr against H/m, so I assume that is a typing error. Note m3=m cubed.
It appears from the graphs that:-
For the CP50: the maximum height on speed setting 1 is 1.2 m
For the CP53: the maximum height on speed setting 1 is over 4 m
Although the maximum flow rates at speed 1, are the about the same when H = 0.
There is a Circulating Pumps CP53 available on the net, but according to the Circulating Pumps website they have not been allowed by the EU to manufacture one since January 2013, and consequently that pump is at least 3 years old. I am tempted to buy that pump rather than the CP50 as I wonder if lowering the energy consumption may affect the life of the pump. The other thing that I note is, that the original CP53 pump came in a sealed box, but having had a look at the CP50 in Plumb Centre, it does not appear to come in a sealed box.
Consequently, I was wondering if anyone has experience of, or comment on the new low energy Circulating Pumps CP50? I am only concerted about the life of the pump and not operating costs.
EDIT:
The axis on Performance Curve supplied with the original CP53 are Q(m3/hr) against H(m) but the graph on:-
http://www.pumpsalesdirect.co.uk/media/wysiwyg/datasheets/cp50.pdf
Appears as Q/m3/hr against H/m, so I assume that is a typing error. Note m3=m cubed.
It appears from the graphs that:-
For the CP50: the maximum height on speed setting 1 is 1.2 m
For the CP53: the maximum height on speed setting 1 is over 4 m
Although the maximum flow rates at speed 1, are the about the same when H = 0.
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