TapFlo CTX I, Руководство пользователя

Страница: 8 / 39

1. INSTALLATION
IOM manual CTX centrifugal pumps
8
1.7.2.
Connection of suction pipe
The suction piping is very important for the correct operation of the pump assembly. It must
be as short and as direct as possible. If a longer suction line is unavoidable, the diameter
should be large enough, i.e. at least as the inlet connection on the pump, to ensure less flow
resistance. In any case, suction must be carried out properly avoiding any air locks.
The CTX pumps are single-stage centrifugal pumps, thus not self-priming. It will therefore
always be necessary to install a bottom valve in all cases when the static height of the liquid
is lower than the suction height of the pump. It is also crucial that the whole suction line is
filled with liquid prior to starting the pump. The suction piping must be air tight. Critical
points in these terms are also the seals between flanges and the seals of the valve stems.
Even some small air let into the suction line cause serious operating problems that can make
the pump stop. It is recommended to use check-valve in the suction line to avoid siphoning
when the pump stops.
1.8. Health and safety
The pump must be installed according to local and national safety rules.
The pumps are constructed for particular applications. Do not use the pump on
applications different from that for which it was sold without consulting us to ascertain
its suitability.
1.8.1.
Protection
In the interest of health and safety it is essential to wear protective clothing and safety
goggles when operating, and/or working in the vicinity of Tapflo pumps.