Final Control; Start-Up, Operation, Shut Down; Initial Start-Up; Switch On Drive - Xylem Lowara LSB Série Instructions De Montage

Installation, Operation and Maintenance Instruction
motor must be connected up in accordance with the
wiring diagram produced by the motor manufacturer.
A protective motor switch must be provided.
In areas endangered to explosion IEC 60079-
14 must additionally be noticed for the electric
installation.
The direction of rotation must only be checked
when the pump is full. Dry running will cause
damage to the pump.

6. Start-up, Operation, Shut down

The plant may only be started up by people
who are familiar with the local safety regulations
and with these
(especially with the safety regulations and
safety instructions given here).

6.1 Initial start-up

Before starting up the pump, check, if the following
points were controlled and carried out:

There´s no need to lubricate the pump before
starting it up.

Pump and suction pipe must be filled completely
with liquid when starting up.

Turn pump unit once again by hand and check
that it moves smoothly and evenly.

Check that lantern guard sheets are mounted and
that all safety devices are operational.

Switch on any existing sealing or flushing pipings.
For quantities and pressures refer to data sheet
and / or order confirmation.

Open valve in suction /intake pipe.

Set discharge side valve to approx. 25% of rated
flow quantity. With pumps with a discharge branch
rated width less than 200, the valve can remain
closed when starting up.

Secure, that unit is electrically connected acc. to
all regulations and with all safety devices.

Check direction of rotation by switching on and off
briefly. It must be the same as the directional
arrow on the drive lantern.

6.2 Switch on drive


Immediately (max. 10 seconds on 50 Hz resp.
max. 7 seconds on 60 Hz currency feed) after
reaching normal operating speed open discharge
valve adjust the required operating point. The
pumping data shown at the type plate resp. in the
data sheet and / or the order confirmation must be
met. Every change is only permitted after talking
with the manufacturer!
Operation with closed valve in the suction and /
or discharge piping is not permitted.
LSB 100-english
Artikel Nr. 771076129
Operating Instructions
page 81

5.5 Final Control

It must be possible to turn the unit easily by hand at
the stub shaft.
On starting-up without back-pressure, the back-
pressure must be produced through throttling at
the discharge side. After reaching full back-
pressure open valve.
If pump does not reach attended head or if
atypical sounds or vibrations do occur:
Switch off pump (see chapter 6.7) and seek for
causes (see chapter 10).

6.3 Restarting

Basically, the same procedure should be followed as
for starting up for the first time. However, there is no
need to check the direction of rotation and the
accessibility of the pump unit.
The pump should only be automatically restarted if it
has been made sure that the pump has remained
filled whilst stand by.
Be particularly careful not to touch hot machine
parts and when working in the unprotected
shaft seal area. Remember that automatically
controlled systems may switch themselves on
suddenly at any time. Suitable warning signs
should be affixed.

6.4 Limits of Operation

The operating limits of the pump / unit regarding
pressure, temperature, performance and speed
are shown in the data sheet and / or order
confirmation and must be observed under any
circumstances!

Do not exceed the output given on the motor
name plate.

Avoid sudden
(temperature shocks).

The pump and motor should run evenly and
without vibrations; check at least once a week.
6.4.1 Flow min. / max.
If no other data are given in the curves or data sheets,
the following is valid:
Q = 0,1 x Q for for short time operation
min BEP
Q = 0,3 x Q for continuous operation
min BEP
Q = 1,2 x Q for continuous operation *)
max BEP
Q = Flow in efficiency optimum
BEP
*) on condition that NPSH
facility
Model LSB
changes in temperature
> (NPSH + 0,5 m)
pump