Startup And Operation; Abnormal Operation - Calpeda CA Instrucciones De Uso

name-plate data and connect the supply conductors
to the terminals in accordance with the appropriate
diagram inside the terminal box cover.
ATTENTION: never allow washers or other
metal parts to fall into the internal cable
opening between the terminal box and
stator. If this occurs, dismantle the motor to
recover the object which has fallen inside.
If the terminal box is provided with an inlet gland, use
a flexible power supply cord of the H07 RN-F type with
section of cable not less than (par. 13.1 TAB 1).
If the terminal box is provided with an inlet bushing,
connect the power supply cord through a conduit.
For use in swimming pools (not when persons are in
the pool), garden ponds and similar places, a residual
current device with IΔN not exceeding 30 mA must be
installed in the supply circuit.
Install a device for disconnection from the mains
(switch) with a contact separation of at least 3 mm in
all poles.
With a three-phase motor install an overload protection
device with curve D appropriate for the rated current
of the pump.
Single-phase CAM, are supplied with a capacitor
connected to the terminals and (for 220-240 V - 50 Hz)
with an incorporated thermal protector.

7. STARTUP AND OPERATION

7.1. Preliminary checks before start-up of the
pump
Do not start-up the device in case of damaged parts.
7.2. First starting
OFF
ATTENTION: never run the pump dry. Start the
pump after filling it completely with liquid.
When the pump is located above the water level
(suction lift operation) or with a positive suction head
which is too low (less than 1 m) to open the non-return
valve, fill the pump through the priming hole.
When the liquid level on the suction side is above
the pump (inflow 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.
Before starting, check that the shaft turns by hand. For
this purpose use the screwdriver notch on the shaft
end on the ventilation side.
Slight initial rotational resistance may be due to
the reduced axial clearance of the impeller of
this type of pump; the impeller will work loose
after a short period of use.
When starting, with a three-phase motor, check
that the direction of rotation is as shown by the
arrows on the lantern bracket.
Otherwise, disconnect electrical power and reverse
the connections of two phases.
Check that the pump works within its
field of perfor-mance and that the absorbed current
shown on the name-plate is not exceeded. Otherwise
adjust the delivery gate valve or the setting of any
pressure switches.
These pumps must never be run against a closed
valve.
CA Rev4 - Operating Instructions
Never run the pump for more than five
minutes with a closed gate valve.
7.3. Self-priming
(Capability to clear the air in the suction pipe when
starting with the pump located above the water
level).
Conditions for self-priming:
• suction pipe with connections perfectly airtight and
properly immersed in the water to be lifted;
• pump casing completely filled with clean cold
water berfore starting.
The pump is not self-priming with liquids
i
containing oil, alcohol or foaming substances.
The check valve prevents reverse siphoning through
the pump when the pump is stopped and retains water
in the pump for the next start.
Without a foot valve or a check valve on the suction
connection the filling operation must be repeated
before each start-up.
ATTENTION: avoid a prolonged operation with
unprimed pump, without water delivery from the
completely opened outlet.
If the pump does not prime in 5 minutes: stop the
motor, remove the priming plug and add more
water.
If necessary, repeat the priming operation after the
pump has been first emptied and then completely filled
with clean cold water.

7.3.1. Abnormal operation

Never run the pump for more than five
minutes with a closed gate valve.
Prolonged operation without a change of water in the
pump causes dangerous increases of temperature and
pressure.
Prolunged operation with a closed delivery port
causes breakage or damage to parts of the pump.
When the water is overheated due to prolonged
operation with a closed port, stop the pump before
opening the gate valve.
Do not touch the fluid when its temperature is
higher than 60 °C.
Do not touch the pump when the surface
temperature is higher than 80 °C.
Wait until the water has cooled inside the pump before
starting again or opening the draining and filling plugs.
7.4. Switch off of the pump
ON
The appliance must be switch off every time
there are faults. (see troubleshooting).
The product is designed for a continuous duty, the
switch off is performed by disconnecting the power
supply by means the expected disconnecting devices.
(see paragraph "6.5 Electrical connection").
GB
Page 11 / 64