The instructions that came with my Grundfos pump said horizontal is fine as
long as the electrics are not below the pipes. The pump was a replacement
for a 20 year old pump that was also mounted horizontally.
On 17 Sep 2006 10:10:33 -0700, firstname.lastname@example.org wrote:
Mine was initially mounted with the shaft horizontal.
In ingorance I replaced it twice before the penny dropped that the shaft was
being clagged up.
The next time, now many years ago, I fitted it with the shaft at 45 degrees
which was the best I could do and since then, have had no further problems.
On 2006-09-17 18:10:33 +0100, email@example.com said:
No it isn't.
They can be mounted horizontally in most cases as long as the shaft is
horizontal as well.
All that I have seen do not permit a vertical orientation of the shaft.
The only thing is that they may be slightly more difficult to purge of
air. However, either they will have a small bleed screw on the side
or the design will be such that pump operation will clear out the air.
No it's clear.
You can have the pump at any angle with respect to which way the inlet
and outlet point as long as the shaft is horizontal - i.e. pointing
directly towards you as you look at the side of the pump.
What isn't generally allowed is to have the *shaft* in other than
I think he must have meant the electrical connection box, which all
instructions I've seen have required to be on top, so it doesn't get
I've never done it, but considering the risk of ingress into the live
connections, I'd be more tempted, if pushed, to put the connector
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