TapFlo CTV Series, Руководство Iom

Страница: 7 / 38

1. INSTALLATION
IOM manual CTV vertical centrifugal pumps
7
Be careful that nobody passes under the pump when lifted.
Never try to lift the pump by the manifolds or hoses attached to the pump.
1.5. Installation
➢
The CTV pump must be installed vertically and can be used in sumps, tanks and similar
containers
➢
For a safe “outside tank” installation (e.g. overflow orifice) always consult us for
arrangement of necessary modifications.
➢
Install the pump on a rigid support and fasten the pump by the baseplate.
1.6. Environment
➢
There should be enough space in the vicinity of the pump in order to operate, maintain
and repair it.
➢
The area in which the pump is operated, must be sufficiently ventilated. Excessive
temperature, humidity or dirt may affect the pump operation.
➢
Behind the cooling fan of the motor there must be sufficient room for the hot air to
escape the motor.
1.7. Suction and discharge piping
A pump is generally part of a piping system that can include a number of components such
as valves, fittings, filters, expansion joints, instruments, etc. The way the piping is arranged
and the positioning of the components has a great influence on the operation and the lifetime
of the pump. The pump cannot be used as a support for the components connected to it.
The flow of liquid from the pump must be as even as possible. It is advisable to avoid any
tight bends or drastic reductions of diameters that may cause flow resistance in the
installation. In case of diameter reduction, it is advisable to use appropriate conical reductions
(possibly concentric on discharge side) at changes of diameter and at a minimum distance
from pump connections of five diameters.
1.7.1. Connection of discharge pipe
If the discharge height is more than 2 meters, a check valve should be installed in the
discharge line (see installation example, chapter 1.7
Example of installation.
The check-valve protects the pump from any backflow.
No stress or tension is allowed on the discharge pipe (it is recommended to use a flexible
hose between the pump outlet and fixed piping).
1.7.2. Connection of suction pipe
Use of an extension pipe is possible for the CTV pump to allow emptying of a tank from a
lower level. During operation, the liquid level can drop below the impeller (pump casing).
However, at start-up the level must always be over the impeller (pump casing). See installation
example, chapter 1.9
Example of installation