Maintenance; Scheduled Maintenance; Torque Values; Check The Rotation Direction (Three-Phase Motor) - Lowara ATEX Manual De Instalación, Uso Y Mantenimiento

en - Original instructions
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
upstream until the liquid 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
upstream 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).
Installations with liquid level below the pump
(suction lift)
For an illustration that shows the pump parts, see
1. Open the on-off valve located upstream from the pump and close
the on-off valve downstream. 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 use a funnel to fill the
pump until 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 use a funnel (4) to fill the
pump until water flows out of the hole.
b) Replace the fill and vent plug (1). Fill plug (3) can be used
instead of (1).
5.2 Check the rotation direction (three-phase
motor)
Follow this procedure before start-up.
1. Locate the arrows on the adaptor or the motor fan cover to
determine the correct rotation direction.
2. Start the motor.
3. Quickly check the direction of rotation through the coupling guard or
through the motor fan cover.
4. Stop the motor.
5. If the rotation direction is incorrect, then do as follows.
a) Disconnect the power supply.
b) In the terminal board of the motor or in the electric control
panel, exchange the position of two of the three wires of the supply
cable.
For the wiring diagrams, refer to the manual with the instructions for
installation and operation of the motor.
c) Check the direction of rotation again.

5.3 Start the pump

The responsibility for checking the correct flow and the temperature of
the pumped liquid rests with the installer or owner.
Before starting the pump, make sure that:
•
Only liquids with conductivity >1000 [pS/m] are used (Refer to PD
CLC/TR 60079–32–1).
•
The maximum liquid temperature (tmax) stated on the pump
nameplate must never be exceeded.
•
The combination of e-SV pump and dry-running protection is
described in the Explosion Protection Document according to the
1999/92/EC Directive.
•
The pump does not leak before start and during operation.
•
The pump is vented before start after periods of idling the equipment.
•
The pump is correctly connected to the power supply.
• The pump is correctly primed according to instruction in the
pump.
• In case of long periods of inactivity, priming must have been
performed.
1. Start the motor.
2. Gradually open the on-off valve on the discharge side of the pump.
At the expected operating conditions, the pump must run smoothly
and quietly. If not, refer to
18
Figure 12.

Troubleshooting.

6 Maintenance

Precautions
ELECTRICAL HAZARD:
Disconnect and lock out electrical power before installing or
servicing the unit.
WARNING:
•
•
•
•

6.1 Scheduled maintenance

The pump-motor assembly supplied by Xylem is suitable for a
continuous use of 2 years or 25000 hours of maintenance-free
operation. After this interval, check the hydraulic seals.
For further information, refer to the motor's use and maintenance
manual.
Contact Xylem or the Authorised Distributor for any requests or
information regarding routine maintenance or service.

6.2 Torque values

For information about torque values, see
For information about the applicable thrust and torques on the flanges
by the piping, see
6.3 Replace the electric motor
For any request or for information about motor replacement, contact
Xylem or the Authorised Distributor.
7 Troubleshooting

7.1 Troubleshooting for users

The main switch is on. The pump unit does not start.
Cause
The thermal
incorporated in the pump (if any)
has tripped.
The protective device against dry
running has tripped.
The pump unit starts, but the thermal protector trips a varying time after
Cause
There are foreign objects (solids
or fibrous substances) inside the
pump which have jammed the
impeller.
The pump runs but delivers too little or no liquid.
Cause
The pump
because it is sucking a dense
and viscous liquid.
Prime the
Cause
The pump is clogged.
The troubleshooting instructions in the tables below are for installers
only.
Maintenance and service must be performed by skilled
and qualified personnel only.
Observe the accident prevention regulations in force.
Use suitable equipment and protective material.
Make sure that the drained liquid cannot cause damage
to persons, property or the environment.
Table
Figure 17.
Solution
protector Wait until the pump has cooled
down. The thermal protector will
automatically reset.
Check the liquid level in the
tank, or the mains pressure.
Solution
Contact Xylem or the Authorised
Distributor.
Solution
is overloaded Check
requirements based on the
characteristics of the pumped
liquid and then contact Xylem or
the Authorised Distributor.
Solution
Contact Xylem or the Authorised
Distributor.
14, Table 15 or Table 16.
the actual power