Commissioning, Startup, Operation, And Shutdown - Lowara SV-B Instalación Funcionamiento Y Mantenimiento

NOTICE:
• Only use dynamically balanced motors with a half-sized key in the shaft
extension (IEC 60034-14) and with normal vibration rate (N).
• The mains voltage and frequency must agree with the specifications on
the data plate.
• Only use single-phase or three-phase motors whose size and power com-
ply with the European standards.
In general, motors can operate under the following mains voltage tolerances:
Frequency Hz Phase ~
50 1
3
60 1
3
Use cable according to rules with 3 leads (2+earth/ground) for single phase
versions and with 4 leads (3+earth/ground) for three phase version.
Electric pump with motor:
Cable gland
Outer cable diameter range in mm
Type
M20 x 1.5, 6–12
SM X
PLM X
LLM X
4.4 Install the pump
4.4.1 Install the pump on a concrete foundation
For information about the pump base and anchor holes, see Figure 13.
1. Put the pump onto the concrete foundation or equivalent metal struc-
ture.
If the transmission of vibrations can be disturbing, provide vibration-
damping supports between the pump and the foundation.
2. Remove the plugs covering the ports.
3. Align the pump and piping flanges on both sides of the pump.
Check the alignment of the bolts.
4. Fasten the piping with bolts to the pump.
Do not force the piping into place.
5. Anchor the pump securely with bolts to the concrete foundation or
metal structure.
4.4.2 Install the automatic air vent
1. Install the automatic air vent and the connected pipe as in Figure 33
The automatic air vent must operate vertically.
2. Fit the pipe into the compression fitting.
3. Tighten the compression fitting to 40N∙m torque.
4. Connect a drain pipe to the higher threaded connection to drain any
leaks into a dedicated tank.
4.4.3 Electrical installation
1. To facilitate the connection, the motor can be rotated to obtain the
most convenient position for the connection:
a) Remove the four bolts that attach the motor to the pump.
b) Rotate the motor to the desired position. Do not remove the cou-
pling between the motor shaft and the pump shaft.
c) Replace the four bolts and tighten them.
2. Remove the screws of the terminal box cover.
3. Connect and fasten the power cables according to the applicable wir-
ing diagram.
For wiring diagrams, see Figure 14. The diagrams are also available on
the back of the terminal box cover.
a) Connect the earth (ground) lead.
Make sure that the earth (ground) lead is longer than the phase
leads.
b) Connect the phase leads.
4. Replace the terminal box cover.
NOTICE:
Tighten the cable glands carefully to ensure protection against cable
slipping and humidity entering the terminal box.
e-SV - English
UN [V] ± %
220 – 240 ± 6
230/400 ± 10
400/690 ± 10
220 – 230 ± 6
220/380 ± 5
380/660 ± 10
M25 x 1.5, 13–18 M32 x 1.5, 18–25
– –
X X
X X
en - Translation of the original instructions
5. If the motor is not equipped with automatic reset thermal protection,
then adjust the overload protection according to the list below.
• If the motor is used with full load, then set the value to the nominal
current value of electric pump (data plate)
• If the motor is used with partial load, then set the value to the oper-
ating current (for example measured with a current pincer).
• If the pump has a star-delta starting system, then adjust the thermal
relay to 58% of the nominal current or operating current (only for
three-phase motors).
5 Commissioning, Startup,
Operation, and Shutdown
Precautions
WARNING:
• Make sure that the drained liquid does not cause damage or
injuries.
• The motor protectors can cause the motor to restart unex-
pectedly. This could result in serious injury.
• Never operate the pump without the coupling guard correctly
installed.
CAUTION:
• The outer surfaces of the pump and motor can exceed 40ºC
(104ºF) during operation. Do not touch with any part of the
body without protective gear.
• Do not put any combustible material near the pump.
NOTICE:
• Never operate the pump below the minimum rated flow, when dry, or
without prime.
• Never operate the pump with the delivery ON-OFF valve closed for lon-
ger than a few seconds.
• Never operate the pump with the suction ON-OFF valve closed.
• To prevent overheating of the internal pump-components, make sure that
a minimum water flow is always guaranteed when the pump is running. If
this cannot be achieved, then a bypass or re-circulate line is recommen-
ded. Refer to the minimal nominal flow rate values given in the Appen-
dix.
• Do not expose an idle pump to freezing conditions. Drain all liquid that
is inside the pump. Failure to do so can cause liquid to freeze and damage
the pump.
• The sum of the pressure on the suction side (water mains, gravity tank)
and the maximum pressure that is delivered by the pump must not exceed
the maximum working pressure allowed (nominal pressure PN) for the
pump.
• Do not use the pump if cavitation occurs. Cavitation can damage the in-
ternal components.
Noise level
For information about noise levels emitted by units equipped with a Lowara
supplied motor, see Table 10.
5.1 Prime the pump: SV-H (Tmax. 150°C)
For information about plug placement, see Figure 15.
Installations with liquid level above the pump (suction head)
For an illustration that shows the pump parts, see Figure 17.
1. Close the on-off valve located downstream from the pump. Select the
applicable steps:
2. Series 1, 3, 5:
a) Loosen the drain plug pin (2).
b) Remove the fill and vent plug (1) and open the on-off valve up-
stream until the water flows out of the hole.
c) Tighten the drain plug pin (2).
d) Replace the fill and vent plug (1).
3. Series 10, 15, 22, 33, 46, 66, 92, 125:
a) Remove the fill and vent plug (1) and open the on/off valve up-
stream until the water flows out of the hole.
b) Close the fill and vent plug (1). Fill plug (3) can be used instead of
(1).
13