Pumping Technology
OMEGA GLANDED PUMPS
INSTALLATION AND OPERATION MANUAL
IMPORTANT INFORMATION
These instructions must be read and understood before installing,
commissioning, operating or maintaining the equipment.
This installation guide gives basic instructions which are to be observed during installation, operation and maintenance
of the pump. It is therefore imperative that this document be read by the responsible person/operator prior to the
installation and always be kept available at the site. It is not only the general safety instructions under the main heading
“Safety” that are to be observed, but also the specific information provided under the other main headings.
SAFETY
DANGER Warns of the risk of electric shock, if the precautions are not observed.
DANGER Warns of the risk of damage to persons, property or the unit, if the precautions are not
observed.
CONSTRUCTION AND APPLICATION
Smedegaard Omega pumps are of the in-line type construction with the motor mounted directly to
the pump body. The pumps are suitable for commercial and industrial heating systems, district heating
schemes, water treatment plants, general water transfer duties and refrigeration plants.
PUMP MEDIUM
Clean, thin, non-aggressive and non-explosive fluids (similar viscosity and specific gravity to water)
without any solids or fibres.
Antifreeze without any mineral oil (special model upon request).
Note: If any liquid other than water is being pumped, we recommend that you contact
Smedegaard, or their representative, as the pump characteristics may change.
TECHNICAL DATA
Electrical data see nameplate
Max. working pressure
10 bar
NPSH requirements see pump performance in Omega range leaflet
Temperature -15oC to +120oC
AIRBORNE SOUND PRESSURE LEVEL
950 rpm max. 65 dB(A)
1450 rpm 0.12 kW to 1.5 kW - max. 47 dB(A), 3 kW to 7.5 kW - max. 60 dB(A), 11 kW to 45 kW - max. 69 dB(A)
2900 rpm 0.12 kW to 3 kW - max. 53 dB(A), 4 kW to 11 kW - max 62 dB(A), 15 kW to 45 kW - max. 78 dB(A)
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INSTALLATION
Fig. 1
Where provided, the threaded tappings in the base of the pump are for the attachment of a foot plate
for floor mounting and are not designed for the purpose of wall mounting. Where the pump is to be
mounted with the head in a horizontal position, the weight of the pump must be taken into consideration
so as to avoid the risk of the failure of the fixings and the consequential danger of damage or injury.
The pump can be installed with the pump shaft vertical or horizontal (see Fig.1). Direction of flow
through the pump casing is indicated by an arrow.
Ensure pipework alignment is correct and the pump and pipework is adequately supported. Sharp bends
should be avoided adjacent to the pump.
If pump is mounted in vertical pipework, flow should be upwards. If flow is downwards (not
recommended) it must be ensured that no air is able to collect in the pump body.
Pumps should never be allowed to operate for a long period in a closed valve condition.
To avoid accumulation of impurities in the pump, ensure that it is not mounted at the lowest point in a
system.
It is recommended that isolating valves are fitted on either side of the pump.
The system should always be thoroughly flushed out to clear any solder, steel wool, plaster or any other
foreign matter that may be lodged in the pump.
To avoid this risk of the accumulation of air within the pump body the pump should not be situated at the
highest point of the system. This may be critical in the case of HWS (bronze) pumps.
Twin headed pumps fitted into horizontal pipework and with horizontal motor shaft, then fit an automatic
air vent into the top casing.
If the head is mounted in the horizontal position then rotate the head to ensure the air vent is at the top.
See Fig 2.
Filler Pipe
Open
Fig. 2
Open
Closed
Closed
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Air Venting
Closed Circuits
Open valves on suction and discharge, allowing water to enter the pump casing.
Open the air vent screw on the pump seal chamber (see Fig. 2) and allow all the air to escape.
Close the air vent screw.
Open Circuits - Flooded suction
Proceed as for closed circuits above but with discharge valve closed.
Open Circuits - Suction lift, with foot valve (see Fig. 3).
Break the pipework at a suitable place on the discharge side of the pump.
Open suction and discharge valves and fill pump and pipework to level of break.
Open the air vent screw on the pump seal chamber (see Fig. 2) and allow all the air to escape from this
area. Close the air vent screw.
The water level in the pipe should remain constant, proving that the foot valve is holding.
Reconnect the pipework.
It is very important that the pump is fully vented otherwise the mechanical seal can be damaged.
ELECTRICAL CONNECTION AND DIRECTION OF ROTATION
Motors should always be connected, through a suitable starter, to the mains supply.
Ensure that the electrical supply available agrees with the motor details shown on the nameplate.
Connection details are shown inside the terminal box cover. Refer to the motor data plate to check for
star/delta connection. If the pump is supplied with an inverter fitted, then refer to the inverter operating
and maintenance instructions.
The direction of rotation is shown with an arrow on the motor cowl and should always be checked after
wiring.
ALL OMEGA RANGE UNITS UP TO OMEGA 10-210 SHOULD ROTATE IN AN ANTICLOCKWISE DIRECTION WHEN VIEWED FROM THE MOTOR NON-DRIVE END.
ALL OMEGA RANGE UNITS OMEGA 12 AND ABOVE SHOULD ROTATE IN A
CLOCKWISE DIRECTION WHEN VIEWED FROM THE MOTOR NON-DRIVE END.
The direction of rotation of three phase motors can be altered by interchanging any two of the three
main connecting leads.
Single phase motors have the direction of rotation pre-set before despatch.
STARTING
THE PUMP MUST NOT RUN WITHOUT WATER.
Open suction valve and close discharge valve. Start the pump and slowly open the discharge valve until
fully open.
The pump should never be allowed to operate for long periods in a closed valve condition.
SERVICE/MAINTENANCE
Motor bearings fitted to Omega pumps are “sealed for life” and do not need greasing. The mechanical seal
fitted to this range of pumps should be checked periodically and replaced if necessary.
We recommend that the casing “O” ring (and circlip when fitted) is replaced when a mechanical seal is
changed.
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FAULT FINDING
Fault
Motor does not start
Cause
Electrical supply isolated
Blown Fuses
Loose electrical connections
Action
Check motor terminals for correct voltage
Replace fuses and check current
Tighten all electrical connections
Motor runs and then cuts out
Undersized wiring
Starter overload tripped
Incorrect motor links
Rewire with larger cable
Check overload sizing with motor F.L.C
Check motor links for star/delta
Pump failing to deliver
Not primed
Suction valve not fully open
Foot valve not fully submerged (open circuits)
Air leaks in suction pipework
Wrong Rotation
Foreign body in pump case
Bleed pump of air
Open Valve
Lower suction pipework
Recheck all joints
Change Rotation (check wiring phases)
Clear obstruction
Pump leaking
Mechanical seal damaged
Casing “O” Ring damaged
Replace seal
Replace “O” ring
Pump unduly noisy
Pipework not supported correctly
Pipework causing undue strain on pump
casing
Cavitation (closed systems)
Cavitation (open systems)
Check pipe supports
Resupport pipework or reinstall pipework
Insufficient flow
Incorrect rotation
Low voltage
Air leaks in suction pipework
Valves not fully open
Partially clogged pump or pipework
Pump too small
Change rotation (check wiring phases)
Check Electrical supply
Recheck all joints
Open all valves
Clear obstructions
Replace pump
Motor does not start but emits a
‘hum’
Foreign body in pump casing
Check motor is free to turn
1 phase motors, faulty capacitor
Pump will operate correctly if ‘spun’ but if it
fails to re-start, replace capacitor
Check the supply phase
3 phase motors, phase dropped
Increase static head
Increase size of suction pipework
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Pumping Technology
EC-DECLARATION OF CONFORMITY
Representative and manufacture:
Smedegaard Pumps Limited
10 Beech Business Park
Bristol Road
Bridgwater
Somerset
UK
TA6 4FF
Machine:
Circulation Pump
Type:
Omega
No:
From 1301-0001 to 1452-9999
Consist of:
Pump, Motor
Manufactured in accordance with the Machinery Directive 2006/42/EC on the approximation of the
laws of machines.
Standards used: EN 12100:2011
-EMC Directive, ie. Council Directive 2004/108/EC of 15 December 2004 to approximate the laws of
Member States relating to electromagnetic compatibility.
Standards used: EN 61000-6-2, EN 61000-6-3
-Low Voltage Directive (2006/95/EC)
Standards used: EN 60 335-2-51:2006, EN 60 335-1:2012
-Commission Regulation (EU) No 640/2009
Implementing Directive 2005/32/EC of the European Parliament and of the Council with regard to eco
design requirements of water pumps.
-Commission Regulation (EU) No 547/2012
Implementing Directive 2009/125/EC of the European Parliament and of the Council with regard to eco
design requirements for water pumps.
13-01-2013
Copenhagendate
Tommy Andersen
Managing Director - Smedegaard Group
Whilst every care has been taken to ensure that data is correct, no responsibility can be accepted for inaccuracies or misprints.
It is SMEDEGAARD’ policy to continually improve and develop the product range.We reserve the right to change specifications without prior notice.
Smedegaard Pumps Ltd - United Kingdom
Tel. +44 (0)1278 458 686 Fax +44 (0)1278 452 454
info@smedegaard.co.uk www.smedegaard.co.uk
T. Smedegaard A/S - Denmark
Tel. +45 43 96 10 28 Fax +45 43 63 17 66
info@smedegaard.dk www.smedegaard.dk
Omega 24/05/2013