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OPERATING INSTRUCTIONS
1° Operating conditions
- For clean liquids without abrasives, without suspended solids
non explosive, non aggressive for the pump materials, with a
maximum temperature of 60 °C.
- Installation in correctly ventilated locations protected from the
atmospheric agents, (motor protection IP 44 ) with a maximum
room temperature of 40°C.
- Maximum voltage variation to the nominal value shown on the
name plate : ± 6%.
- Max. start-ups for hour : 40 at regular intervals.
2° Installation
The
close coupled pumps series must be installed with
KF-KFM
the rotor axis horizontal and feed downwards.
Place the pump as close as possible to the suction source.
- Provide ample clearance around the unit for
for easier inspection and maintenance.
3° Pipes
Secure all pipes to support so that they do not carry on stress,
strain or vibration to the pump.
For suction lifts over 5 mt. fit a suction pipe with an inside
diameter larger than the diameter of the pump suction
connection. The pipe diameters never have to be smaller than the
pump connections. The suction pipe must be perfectly airtight
and be led upwards in order to avoid air pockets.
For suction operation fit a food valve with strainer which must
always be immersed.
A strainer should be installed on the suction side of the pump to
prevent foreign particles from entering the pump.
For suction from a storage tank fit a check valve. For positive
suction head operation fit a gate valve. Follow local specifications
if increasing network pressure. Fit a
to adjust delivery, head, and absorbed power.
pipe
Install a pressure gauge. With a geodetic head at outlet over 15
m fit a
between the pump and the gate valve in order
check valve
to protect the pump from water hammering. Ensure the inner
sides of the pipes are clean before connection.
4° Electrical connection
Electrical connection must be carried out by a qualified electrician
in compliance with local regulation.
The unit must be properly earthed (grounded).
Connect the earthing (grounding) conductor to the terminal with
the earth marking.
Compare the mains voltage with the name plate data and connect
the supply conductors to the terminals in accordance with the
appropriate diagram inside the terminal box cover.
Install a device for disconnection from the supply, having a contact
separation of a least 3 mm in all poles.
With three-phased motor
protective device in line with the name plate curred.
Single phase pumps
KFM
connected to the terminals and, with inset thermal protector for
230-240 V ~ 50 Hz.
5° Start-up
Check that the shaft turns by hand.
For this purpose the smaller pumps have a screwdriver notch
on the ventilation side of the shaft end.
A slight initial rotational resistance may be due to the reduced
axial clearance of the impeller of this type of pumps; the impeller
will work loose after a short period of operation.
Never run the pump dry.
Start the pump after filling it completely with liquid through the
relevant priming hole.
motor ventilation,
into
gate valve
the delivery
provide an overload
(series KF)
series are supplied with a capacitor
When operating under positive suction head, fill the pump by
opening the suction gate valve slowly and completely, keeping
the delivery gate valve open to release the air.
With three phase motor check that the direction of rotation is as
shown by the arrow on the pump casing,
connections of the phases.
Check that the pump works within its field of performance,
and that the absorbed current shown on the name plate is not
exceeded.
Otherwise adjust the delivery gate valve, or the sitting of any
pressure switches.
the pumps of the
WARNING:
power input at minimum delivery.
run against a closed valve.
6° Maintenance
When the pump is not used, empty it completely if freezing
may be expected.
Remove the front cover or the drain plug , if available, to empty
the pumps of the
KF-KFM
After a long resting time, before restarting the unit, check that
the impeller is not jammed from incrustation, settling solids
(deposit formation) or other causes. If necessary clean with
suitable actions.
Fill the pump casing completely with liquid.
CAUTION : disconnect the mains before any servicing operation.
7° Dismantling
Close the suction and delivery gate valves and drain the pump
casing before dismantling the pump.
For dismantling and re-assembly see construction in the cross
section drawing.
When ordering spare parts, please refer to data stamped on
name plate and position number of each spare part required in
accordance with the cross section drawing.
2
otherwise reverse the
series have maximum
KF-KFM
These pumps must never be
series.
KFM
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