1. INSTALLATION
IOM manual CTM mag drive pumps
7
1.6.2.
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 CTM pumps are single-stage centrifugal type, thus non 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. The suction piping must be without air inlets
that are more probable with long suction lines or if suction occurs with negative head. Critical
points in these terms are also the seals between flanges and the seals of the valve stems.
Even a bit of air let into the suction line can cause serious operating problems that can make
the pump stop.
1.7.
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.
1.7.1.
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.
1.7.2.
Electrical safety
Do not carry out any maintenance or/and operation on the pump while it is running or before
it has been disconnected from the power supply. Avoid any danger caused by electric power
(for details see current regulations in force). Check that electrical specifications on the motor
nameplate are equivalent to the power supply to which it will be connected.
1.7.3.
Chemical hazard
Whenever the pump is to be used for pumping a different liquid, it is essential to clean the
pump beforehand in order to avoid any possible reaction between the two products.
Before pump disassembly clean it thoroughly.
1.7.4.
Dry running
Do not start nor carry out running tests before filling the pump with liquid. Always avoid dry
operation of the pump. Start the pump when it is completely filled and with the valve on the
discharge side almost completely closed.
