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a) Close the fill (3) or gauge plug (1).
Installations with liquid level below the pump
(suction lift)
For an illustration that shows where pump plugs are,
see
Figure 23
on page 408.
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 water 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 down-
stream.
b) Remove the gauge plug (1) until water 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 direc-
tion.
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 elec-
tric control panel, exchange the position of two
of the three wires of the supply cable.
For the wiring diagrams, see
404.
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:
• The pump is correctly connected to the power
supply.
• The pump is correctly filled according to instruc-
tions in Fill the pump (chapter 5).
• The on-off valve located downstream from the
pump is closed.
1. Start the motor.
2. Gradually open the on-off valve on the dis-
charge side of the pump.
At the expected operating conditions, the pump
must run smoothly and quietly. If not, refer to
Troubleshooting
on page 24.
6 Maintenance
Figure 20
on page
Precautions
Electrical Hazard:
Disconnect and lock out electrical power
before installing or servicing the unit.
WARNING:
• Maintenance and service must be
performed by skilled and qualified
personnel only.
• Observe accident prevention regula-
tions in force.
• Use suitable equipment and protec-
tion.
• 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 pump-
ed liquid and on the operating conditions of the
pump.
Contact the local sales and service representative
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 re-greaseable bearings
• Regrease at 4000 operating hours, but at least
once per year. Clean lubrication nipples (SN)
first.
• Use NLGI Grade 2 grease or equivalent.
Contact the local sales and service representative
for any requests or information.
Motor bearings
After approximately five years, the grease in the mo-
tor bearings is so aged that a replacement of the
bearings is recommended. The bearings must be re-
placed after 25000 operating hours or according to
the motor supplier maintenance instructions, which-
ever is shorter.
Motor with regreasable bearings
Follow motor supplier maintenance instructions.
Coupling
Check the clearance in the coupling elements regu-
larly, at least once a year. We recommend checking
every 1000 operating hours or every three months,
whichever comes first.
6.2 Inspection checklist
Check the coupling
Check the mechanical
seal
en - Original instructions
Check the flexible ele-
ments of the coupling.
Replace the relevant
parts if there is any sign
of wear and check the
alignment.
Check for leakage of the
mechanical seal. Re-
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