Pipe Connection - salmson NEXIS-V 2 Instalacion Y Puesta En Servicio

ENGLISH
10 - Tube liner
1 1- Flange
12 - Pump housing
13 - Base plate
FIG. 2 and 3
1 - Strainer
2 - Pump suction valve
3 - Pump discharge valve
4 - Check valve
5 - Drain + priming plug
6 - Air bleed screw + Filling plug
7 - Tank
8 - Foundation block
10 - Lifting hook
6.2 Design of product
- NEXIS pumps are vertical high pressure non-self priming pumps
with inline connection based on multistage design.
- NEXIS pumps combine use of both high efficiency hydraulics and
motors (if any).
- All metallic parts in contact with water are made of stainless steel.
- For models equipped with heaviest motor (> 40 kgs), a specific
coupling allows to change the seal without removing the motor. A
cartridge seal is then used in order to ease maintenance.
- Special handling devices are integrated in order to facilitate
pump installation.
7. INST LL TION ND ELECTRIC L CONNECTION
Installation and electrical work in compliance with any local codes
and by qualified personnel only.
W RNING ! Bodily injury !
Existing regulations for the prevention of accidents must be
observed.
W RNING ! Electrical shock hazard !
Dangers caused by electrical energy must be excluded.
7.1 Commissioning
Unpack the pump and dispose of the packaging in an environmen-
tally-responsible manner.
7.2 Installation
The pump must be installed in a dry, well-ventilated and frost-free
place.
C UTION ! Possible damage of the pump ! Dirt and solder
drops in to the pump body can effect the pump operation.
- It is recommended that any welding and soldering work be done
before installing the pump.
- Thoroughly flush the system out before installing the pump.
- The pump must be installed in an easily accessible position to
facilitate inspection or replacement.
- For heavy pumps, install a lifting hook (FIG. 2 - rep. 10) above the
pump in order to ease its disassembly.
W RNING! Risk of accident by hot surfaces!
The pump must be positioned so that someone cannot
come into contact with the hot pump surfaces while opera-
tion.
- Install the pump in a dry place protected from frost, on a flat con-
crete block using appropriate screws. If possible, use an insulating
material under the concrete block (cork or reinforced rubber) to
avoid any noise and vibration transmission into the installation.
W RNING! Risk of fall!
The pump must be correctly screwed to the ground.
- Place the pump where it will be easy to reach, to facilitate inspec-
tion and removal work. The pump must always be installed per-
fectly upright on a sufficiently heavy concrete base.
C UTION! Risk of parts inside the pump!
Take care to remove closure members of the pump housing
before installation.
NOTE: Each pumps could be tested regarding hydraulic fea-
tures in factory, some water may remain in them. It is recom-
mended for hygienic purposes, to carry out a rinsing of the
pump before any using with potable water supply.
- The installation and connection dimensions are given § 5.2.
- Lift the pump carefully by using the integrated rings, if necessary
with a hoist and suitable slings according to the current hoist
guidelines.
W RNING! Risk of fall! Take care to pump fixations especially
for the highest pumps whose centre of gravity may lead to
risk during pump handling.
W RNING! Risk of fall! Use integrated rings only if they are
not damaged (no corrosion ...). Replace them if needed.
W RNING! Risk of fall! The pump must be never carried by
using motor hooks : these are only designed to lift the motor
alone.

7.3 Pipe connection

- Connect the pump to the pipes by using only counterflange
accessories supplied with the product.
C UTION! Tightening of screws or bolts must not exceed 10
daN.m for PN25 configuration.
Use of impact wrench is prohibited.
- The circulation sense of the fluid is indicated on the identification
label of the pump.
- Pump must be installed in such a way that it is not stressed by the
pipework. The pipes must be attached so that the pump does not
bear their weight.
- It is recommended that isolation valves be installed on the suction
and discharge side of the pump.
- Use of expansion joints may mitigate noise and vibration of the
pump.
- As regards the nominal cross-section of the suction pipe, we rec-
ommend a cross-section at least as large as that of the pump
connection.
- A check valve could be placed on the discharge pipe in order to
protect the pump against hammer shock.
- For direct connection to a public drinking water system, the suc-
tion pipe must also have a check valve and a guard valve.
- For indirect connection via a tank, the suction pipe must have a
strainer to keep any impurities out of the pump and a check
valve.
7.4 Motor connection for bare-shaft pump (without motor)
- Remove coupling guards.
NOTE: Coupling guards can be removed without entirely
unscrewing screws.
- Install the motor on the pump by using screws (FT lantern size – see
product designation) or bolts, nuts and handling devices (FF
lantern size – see product designation) provided with the pump:
check motor power and dimension in SALMSON catalogue.
NOTE: Depending on fluid characteristics, motor power could
be modified. Contact SALMSON Customer Services if needed.
- Close the coupling guards by screwing all screws provided with
the pump.
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