16
4
Description of
pump/accessories
Products delivered
– Complete pump
– 2 flat gaskets,
– Installation and operating in-
structions
Pump description
In the wet-running pump all rota-
ting parts are surrounded by the
flow medium, including the motor
rotor.
A shaft seal, which would be sub-
ject to wear and tear, is not requi-
red. The pumping medium lubrica-
tes the friction bearing and cools
both bearing and rotor.
No
motor overload protection
is
required.
Even the maximum overload cur-
rent cannot damage the motor. The
motor operates non-overloading.
Speed setting (Fig. 8)
The speed of the pump can be
adjusted with a 3-position rotary
button. In position 3 the speed is
approx. 40...50 % of the maximum
speed with the power consumption
being reduced to 50 %.
5
Assembly/
Installation
Installation
Installation and ser-
vice by qualified per-
sonnel only!
– Assembly should only take place
once all welding and soldering
work and the rinsing of the pipe
network has been completed.
Dirt can have an adverse effect
on the functioning of the pump.
– The pump must be installed in
an easily accessible position to
facilitate inspection or replace-
ment.
– It is recommended that shut-off
devices be fitted before and after
the pump. This will save having
to drain and refill the system if
the pump needs replacing. The
fittings are to be installed so that
any water that escapes cannot
drip onto the pump motor or ter-
minal box.
– When installed into the flow pipe
of an open-vented system, the
open
safety
vent
must
be
connected to the system on the
inlet side of the pump.
– Pump to be mounted with the
shaft in the horizontal plane in
such a way that it is not stressed
by the pipework. (Installation
positions in Fig. 2).
ATTENTION!
Rio C 25/..., 30/...
