Xylem LOWARA ESH ATEX Manuel D'installation, D'exploitation Et De Maintenance page 29

Installations with liquid level below the
pump (suction lift)
For an illustration that shows where pump plugs
are, see Figure 22.
1. All pipe system empty:
a) Open the on-off valve located
upstream from the pump.
b) Remove the fill plug (3) and the
gauge plug (1). Use a funnel to fill
the pump through the fill hole until
the liquid flows out of this hole.
c) Tighten the fill plug (3) and the
gauge plug (1).
2. Filled discharge pipe system:
a) Open the on-off valve located
upstream from the pump and open
the on-off valve downstream.
b) Remove the gauge plug (1) until
liquid flows out of this hole.
c) Tighten the gauge plug (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, see the
Installation and operating
instructions manual 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] (Refer to PD CLC/TR 60079–32–
1:2015) are used.

The maximum liquid temperature (tmax)
stated on the pump nameplate must
never be exceeded.

The combination of the pump and the 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 filled according to
instructions in Fill the pump.

The on-off valve located downstream from
the pump is closed.
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
Troubleshooting.
6 Maintenance
Precautions
Electrical Hazard:
Disconnect and lock out electrical
power before installing or servicing
the unit.
WARNING:

Maintenance must only be carried
out by Xylem or the Authorised
Distributor.

Observe accident prevention
regulations in force.

Use suitable equipment and
protection.

Make sure that the drained liquid
does not cause damage or
injuries.
6.1 Service
If the user wishes to schedule regular
maintenance deadlines, they are dependent on
the type of pumped liquid and on the operating
conditions of the pump.
Contact Xylem or the Authorised Distributor for
any requests or information regarding routine
maintenance or service.
Extraordinary maintenance may be necessary to
clean the liquid end and/or replace worn parts.
Pumps with greased for life bearings
Pumps with greased for life bearings do not
require any scheduled routine maintenance.
Pumps with regreaseable bearings

Regrease at 4000 operating hours, but at
least once per year. Clean lubrication
nipples (SN) first.

Use NLGI Grade 2 grease or equivalent.
Motor bearings
After approximately five years, the grease in the
motor bearings is so aged that a replacement of
the bearings is recommended. The bearings
must be replaced after 25000 operating hours or
according to the motor supplier maintenance
instructions, whichever is shorter.
Motor with regreasable bearings
Follow motor supplier maintenance instructions.
Coupling
Check the torsional backlash every 1000 hours
of operation, or every three months, whichever
the earliest.
To measure the torsional backlash:
1. Rotate one of the two half couplings
without forcing as far as it will go.
en - Original instructions
29