5
The pump must be connected to terminals or starting equipment installed at a level at
which it cannot be flooded.
The electrical installation shall be inspected by an autorized electrician.
Electrical connections
NOTE! For safety reasons, the earth conductor in the pump should be longer
than the phase conductors. If the motor cable is accidentally wrenched off, the
earth conductor should be the last to break away from its terminal. This applies
to both ends of the cable.
–
that the cable sheath is not damaged. When fitting a cable which has earlier been
used in the pump, always fit a new rubber bush and cut away a piece of the cable so
that the rubber bush will end up in a new place on the cable.
When changing the cable, check the following to avoid leakage:
–
that the rubber bush and washers in the cable entry are suitable for the cable. See
the list of spare parts.
CAUTION!
If a cable is damaged, it must always be replaced.
The pumps are supplied for direct on-line starting or star-delta starting. See the rating
plate.
7-core cable
1 = star connection
2 = delta connection
Check that the mains voltage, frequency, starting equipment and method of starting agree
with the particulars stamped on the motor rating plate.
N.B. A pump designed for 400 volt can be used in the 380-415 volt range.
A pump designed for 230 volt can be used in the 220-245 volt range.
Connection of stator and motor conductors.
Connect the stator and motor conductors as shown in the diagrams on page 26.
To enable the correct connections to be made, the number of conductors, any monitoring
equipment and the method of starting (see rating plate) must be known.
The following wiring diagrams apply:
CAUTION!
The electrical installation must conform to national and local regulations.
CAUTION! All electrical equipment must always be earthed (grounded).
This applies both to the pump and to any monitoring equipment.
CAUTION! The pump can be provided with control conductors, these are
marked F0, F1 and Di. F0 and F1 are connected to three temperature
sensors incorporated in the motor. Di is connected to a moisture sensor
which is situated in the lower part of the motor/oil compartment, and can be
connected to a cut out relay.
above the centre of gravity of the pump. As the pump is
lowered, it will connect automatically to the discharge
bracket as it reaches the bottom of its travel.
Connect the cables to the starter equipment. The pipes and
valves must be sized to suit the performance of the pump.
See the product sheet for the pump.
Installation of transportable pump
version - P
Arrange the cable run so that the cables will not be kinked or
nipped. Connect the delivery pipe and cable. For further
The starting equipment must be provided with overcurrent protection which should be
adjusted as follows:
1.
Direct on-line starting
Set the overcurrent relay to 10 percent over the current specified on the rating plate.
2.
Star-delta starting
Set the overcurrent relay to the current specified on the rating plate divided by 1.57
(or the specified rated current multiplied by 0.64).
The power supply should be fused with slow-blow fuses.
Changing the cable.
Inspection
Pump section
Inspection
Action in the event of a fault
Cables
Check that the sheath is not damaged. Check that the cables are not kinked or nipped.
Fit a new cable. Correct the fault
Visible parts
Check that all parts are in good condition, and that bolts
Replace worn parts. Tighten
and nuts are securely tightened.
any loose bolts and nuts.
Impeller/wear ring*
Check that the parts are not worn to such an extent that the pump performance is affected.
1. Adjust the wear ring.
Shaft seal
Check that the oil is clean and is not mixed with water. See under ”Changing the oil”.
In the event of slight leakage, change the oil.
Hoses, pipes and valves
Check that the equipment does not leak or is otherwise damaged.
Adjust or replace defective equipment.
*= N.B. All pumps are not equipped with a wear ring.
Starting
jerk
Before starting:
Check the direction of rotation of the pump (see figure). At the
instant of starting, the pump will jerk anti-clockwise when
viewed from above.
Changing the oil
Change of oil is done the same way on cooled and uncooled pumps.
Open oilscrews on both sides (as picture 1 on page 27). Lean pump or only motor on the
side, drain the oil into a clean receptacle. Examine the oil. Fill with new oil (see table on
page 26). Use White Oil with a viscosity of 20 cSt, such as BP Enerpar M002 or
equivalent. Always fit a new seal washers on the oil screws. Assemble in the reverse
order.
Operation
CAUTION!
Under certain operating conditions, the pump temperature may be high.
If the direction of rotation is incorrect, transpose two phases. See under the heading
”Electrical connections”.
CAUTION! The starting jerk may be violent. Don’t hold the pump
handle when checking the direction of rotation. Make sure that the
pump is firmly supported and cannot rotate.
WARNING! Never insert your hand or any other object
into the inlet opening on the underside of the pump
casing when the pump is connected to the power supply.
Before inspecting the pump casing, check that the pump has
been isolated from the power supply and cannot be energized.
Service and maintenance
CAUTION! Before any work is started, check that the pump is isolated
from the power supply and cannot be energized.
The figures within brackets are item numbers and are shown on the sectional drawings
at the end of the manual. Regular inspection and preventive maintenance will ensure
more reliable operation. The pump should be inspected every six months, or more often
CAUTION! When the pump or motor section has been laid on its side, always
secure it with wedges from both sides to prevent it from rolling away.
CAUTION! Before undertaking any service work, make sure that the
pump is thoroughly clean, and bear in mind the importance of observing
good personal hygiene. Follow your local safety instructions.
CAUTION! Parts must be replaced by genuine spares, including
screws, to insure correct strength.
CAUTION! In the event of inward leakage, the oil housing may be
pressurized. When removing the oil plug, hold a piece of cloth over it
to prevent oil from splashing.
NOTE! Old oil should be entrusted to an oil disposal company in accordance
with local regulations.
if the operating conditions are difficult. The cable should be checked more frequently.
For a complete overhaul of the pump, please get in touch with an authorized Pumpex
workshop or your Pumpex dealer.
The manufacturer reserves the right to change the design and specifications.
particulars, see under the heading ”Electrical connections”.
Place the pump on a firm surface which will prevent it from overturning or burrowing down.
The pump can also be bolted down to the base or suspended by the lifting handle slightly
above the bottom.
Hoses, pipes and valves must be sized to suit the pump performance. See the product sheet
for the pump.