Pentair Pool Products Nocchi R2T, Use And Maintenance Manual

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Danger If the temperature of the pumped fluid is
above 65°C, it is necessary to take
appropriate measures to position the pump
in order to avoid accidental contact with
operators.
The machine has been designed, manufactured and protected
to be installed with the motor axis arranged vertically and the
motor, in the upper position, located horizontally.
The machine has been designed, manufactured and protected
to be placed on overhead pipes able to tolerate the weight of
the machine (without supporting base).
The machine has been designed, manufactured and protected
to be supplied with electric energy having the following
characteristics:
- 230 V, 50 Hz, three-phase
- 400 V, 50 Hz, three-phase
Different voltage and frequency values are available on
request
1.8 Non recommended use
The machine has not been designed, manufactured or
protected for the uses not specifically listed under section
“Recommended use”
In particular the machine has not been designed,
manufactured or protected to transfer, circulate or increase the
pressure of the following fluids:
- Explosives
- Corrosive fluids
-
Fluids derived from crude oil or mixtures containing
derivatives of crude oil
- Mixtures containing materials or suspended fibres
- Sea water
For special uses, contact our technical department
1.8.1 Liability arising from non recommended use
NOTE
PENTAIR WATER ITALY shall not be liable
for damages to people, animals or property
deriving from non recommended use
1.9 Warranty
NOTE
Installation, adjustment and maintenance
operations that have not been authorised
and/or performed by unskilled personnel
will invalidate the warranty
1.10 Assistance
Warning If the pump has been used with noxious or
toxic fluids, the pump will be classified as
polluted and PENTAIR WATER ITALY Srl
will have the right to refuse offering its
assistance for the pump.
For all assistance requests, contact:
PENTAIR WATER ITALY Srl – Servizio Assistenza
Via Masaccio, 13
56010 Lugnano - PISA - ITALY
Tel. 050/71.61.11 - Fax 050/70.31.37
1.11 How to use the documentation
supplied
Operators should carefully read the documentation supplied
before performing any operation on the machine.
The documentation supplied should be kept along with the
machine until it is dismantled, so that it is available in case of
need.
If the used machine is sold, it will be necessary to supply all
the documentation enclosed.
2. DESCRIPTION
2.1 Description
2.1.1 Architecture and operating principles
The machines are horizontal, centrifugal and single stage
electropumps with mechanical sealing and suction and delivery
on-line flanged mouths.
Machines are directly coupled to an asynchronous three-phase
electric motor with 2 (R2T-R2TD) or 4 (R4T-R4TD) poles,
closed casing and external ventilation.
Twin models contain two twin pumps and a single delivery and
suction mouth, each coupled with its electric motor.
These machines are not self-priming.
2.1.2 Machine frame
The pump body and the motor stool are made of cast iron
GG20.
The shaft is made of stainless steel AISI 420.
The impeller, the impeller guide ring, the conical bushing and
the nut of the conical bushing are made of stainless steel AISI
304.
The mechanical sealing of the machine consists of sliding
backfaces in tungsten carbide.
Suction and delivery mouths are flanged (DN40÷100).
The electric control motor is asynchronous with closed casing
and 2 or 4 pole external ventilation, IP54 protection degree and
Class F insulation. The motor has a V18 manufacturing form
with counterclockwise direction of rotation (viewed from the
cooling fan side).
2.2 Technical characteristics
Dimensions and weights of machines
See "Product Specifications"
Electric data
See "Product specifications" and nameplate
Pressure
- maximum operating pressure: 6 bar
- minimum suction pressure: depending on NPSH values
increased by a safety factor of 0.5 m water gauge (see
PRODUCT SPECIFICATIONS - PERFORMANCES).
2.2.1 Noise
The maximum continuous noise equivalent to weighed noise A
of acoustic vibrations generated by the machine: 82 dB (A)
2.2.2 Liability
PENTAIR WATER ITALY declines any liability in the event of
failure to comply with the values indicated in this paragraph.