Pentair Pool Products Nocchi R2T, Use And Maintenance Manual

Page: 9 / 24

To connect the machine to the mains, perform the operations
described here below:
- Make sure that the motor is suitable to the mains voltage and
frequency
- Cut the electric system off by using a cut-off switch
- Loosen the screws that fix the cover to the terminal block
- Insert the supply cable into the cable holder.
- Connect the phases and the ground to the terminals following
the instructions shown on the diagram inside the terminal
block.
- Reposition the cover of the terminal block with the related
gasket
- Tighten the screws that fix the cover to the terminal block
- Insert the electric supply by using the cut-off switch
- Supply one current impulse to the machine
- Check the direction of rotation of the motor
A- If the direction of rotation complies with the direction of the
rotation indicated by the arrows shown on the machine
head, the connections are correct
B- If the direction of rotation is opposed to the one shown by
the arrows present on the machine head, perform the
following operations:
-- Cut the electric system off by using the cut-off switch
-- Loosen the screws that fix the terminal block cover in
position
-- Invert the connection of the two phases
-- Reposition the terminal block cover with the related
gasket
-- Tighten the screws of the terminal block cover
4. OPERATION
Warning Always start the machine after filling it with
fluid, as explained under sections
“Operation”.
4.1 Start-up
Perform the following operations to start the machine for the
first time:
- Open the gate on the suction line
- Start the machine
-
Slowly open the gate on the delivery line to avoid water
hammering on the delivery line
- Adjust the thermal relay depending on the current absorbed
by the motor
- Adjust the enabling and disabling pressure of the pressure
switch that controls the operation of the machine
4.2 Checking the frequency of starts and
stops
To check the frequency of starts and stops, perform the
following operations:
-
Check the operation of the machine for an hour
- If the number of starts/stops is above 40, adjust the control
equipment in order to reduce the frequency
Danger For high temperature fluids it is necessary
to allow the fluid contained in the machine
to cool before loosening the screws that fix
the machine to the pipes
Warning Always check that the machine is filled.
Never start the machine without fluid, as
indicated under section “Operation”.
5. MAINTENANCE
5.1 Lubrication
The gasket on the shaft is self-adjusting. The sealing surfaces
are resistant to wear and are lubricated by the pumped fluid.
The bearings of the machine are lubricated by the pumped
fluid.
The ball bearings of the motor are self-lubricated with grease
resistant to heat.
Warning If the machines are installed, used and
serviced in accordance with the
instructions and directions given in this
manual, they do not require lubrication.
Follow the instructions and directions
given in this manual
5.2 Temporary disabling
To disable the machine for a long period of time, perform the
following operations:
- Cut the electric system off by using a cut-off switch
- If ambient temperature falls below the freezing temperature of
the pumped fluid, perform the following operations:
A- If the whole system has to be disabled:
-- Drain the system
B- If it is not necessary to drain the whole system:
-- Close the gates on the delivery and suction lines
-- Allow all the fluid to de-flow from the drainage cap of the
machine
-- Store the drainage cap for future use without
disassembling it from the machine
Danger When using high temperature fluids, allow
the fluid contained inside the machine to
de-flow before removing the cap and
draining the fluid
Warning Before restarting the machine, fill it as
indicated under sections “Operation”.
5.3 Periodical inspection
At regular intervals, perform the following inspections:
- Hydraulic performances
- Lack of fluid leaks
- Motor overheating
- Relay tripping time
- Start-up frequency
- Correct operation of automatic controls
- Vibrations
- Noise
A- If check-ups do not reveal the presence of abnormal
conditions, continue to use the machine until the next
check-up