Pentair Pool Products Nocchi R2T, Use And Maintenance Manual

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Power supply
Electric power supply should have the following characteristics:
- Offer a differential protection
- Offer voltage and frequency values compliant with the values
indicated on the motor nameplate
- Offer a power not below the value indicated on the motor
nameplate
- Be equipped with an appropriate thermal protection
- Be equipped with a thermal relay adjusted according to the
actual current absorbed
- Be equipped with a cut-off switch with protective fuses
- Be equipped with cables with a section suitable to the power
absorbed by the motor
Access
Connect the machine so that it can be easily accessible for
maintenance operations
Supporting system
The machine supporting system can correspond to one of the
following configurations:
- The machine can be connected to a fixed pipe able to
maintain the machine in position
- The machine can be connected to a pipe and rested on a
base with the characteristics indicated in “Product
specifications”, paragraph “Foundations”
- The machine can be connected to a pipe and fixed, by means
of nuts, to a base with the characteristics indicated in
“Product Specifications” , paragraph "Foundations"
3.6 Installations
Danger All installation operations should be
performed while the electropump is
disconnected from the mains.
Warning Do not install the machine in environments
containing gases and/or inflammable or
explosive materials.
Danger Electropumps are designed so that all the
moving parts are rendered inoffensive by
means of protections. Do not use the
electropump if these protections have been
removed or are damaged, since this could
cause serious accidents to people.
Danger The machine supply line should always
have a differential circuit breaker.
3.6.1 Assembly
-
The arrows printed on the machine body indicate the
direction of the flow.
- It is advisable to fit gates downstream and upstream from
the machine.
- The machine should be installed so that the axis of the motor
is between the vertical and horizontal direction in all
positions.
- The motor should never be arranged in a low position to
avoid water entering the motor and the bearings. See the
following figure for reference.
R4T – R2T
R4TD – R2TD
- Install the machine on horizontal or vertical pipes, on the
“delivery” and “return” lines.
- The machines used do recirculate used water should always
be installed on the vertical section of the pipe so that the
water flow is directed upwards.
- The system should also be equipped with an air venting
system on the section of the pipe where the machine is
installed.
- If the machine is installed on a vertical pipe with the flow
directed downwards, the air vent should be fitted on the
highest point of the machine.
-
Do not install the machine in the lowest point to protect it
from deposits.
- To guarantee a regular suction pressure and avoid noise
and cavitation, the pipe connected to the expansion vessel
should be installed before the suction mouth of the machine.
-
Verify that the machine is not subject to tensions caused by
pipes or water temperature variations.
- The machines can be directly inserted in the pipes if these
are appropriately supported. The threaded holes on its base
can be used to fix the machine to a support (see PRODUCT
SPECIFICATIONS – DIMENSIONS AND WEIGHTS).
- To avoid deposits from accumulating in the machine and in
the valves, drain the system before starting the machine.
-
It is advisable to install anti-vibration supports on both
flanges and on the base to prevent vibrations from being
transmitted along the pipes.
3.6.2 Connection of the machine to the pipes
Check valves should be installed both upstream and
downstream from the machine, to avoid having to drain the
whole system when it is necessary to disassemble and remove
the machine.
Before pipes are installed, it is necessary to make sure that
they do not exert mechanical stresses on the machine.
It is necessary to make sure that the diameter of the suction
and delivery pipes is appropriate and that the minimum inlet
pressure is guaranteed (see 2.2 “Technical characteristics”).
To avoid sediments from accumulating inside the machine, it is
advisable to avoid installing the machine in the lowest point of
the system.
Tubes must be installed in a position that prevents air from
accumulating, especially on the suction side.