Xylem Lowara Scuba Manuale utente
Rain Water Scuba Pump
Operating, Installation and Maintenance Instructions
1
EC Declaration of conformity
Xylem Water Solutions UK Limited declares that the Rain Water Scuba Submersible Pump models: SC205,
SC207, SC209, SC211, SC407, SC409, and SC411 fitted with 1 ¼” BSP female suction port in accordance
with the following directives: 2006/42/EC
Conforms with the essential health and safety requirements of the Machinery Directive and its amending
directives.
Signed: Position: Engineering manager Date: 20 - 04 - 2016 Revision A
Clive Willmott
Introduction
This leaflet contains information to enable the safe use, installation and operation of the products mentioned
above, used in conjunction with the recovery of rain water. The following instructions must be read and
understood by all persons responsible for the installation, operation and maintenance of this product.
Warning Symbols
Safety instructions where noncompliance would affect safety.
Safety instructions where electrical hazard is involved.
Safety instructions where noncompliance could cause damage to the equipment.
1. Handling
The pump should be serviced by qualified personnel only, and after being disconnected from the
power supply. The product must be handled and lifted with care using suitable lifting equipment
attached to the lifting eyes at the top of the pump. Impacts may cause damage without any visible
external signs.
2. Applications
The pump is design to handle recovered rainwater which has passed through as filter with a
maximum particulate size < 1.25mm.
2
3. Working Limits
Maximum temperature of pumped liquid: 40°C
Maximum immersion depth: 20M
Maximum number of starts per hour, evenly distributed:
25 for motor powers up to 0.9kW
20 for motor powers above 0.9kW
EN 60335-2-41 must be observed when operating electric pumps in rainwater tanks.
4. Installation
We recommend the installation of a check valve on the suction side of the pump to aid priming and
to avoid air locking. Care must be taken not to damage the power cable when lowering the pump
into tank/well. Tie the cable to the delivery pipe at 1 metre intervals.
4.1 Installing the electric pump in a tank or reservoir
The tank or reservoir must be large enough to prevent an excessive number of starts per hour
(see working limits (par. 3).
4.2 Drop cable
If the pump is connected to a plastic delivery pipe, a steel or nylon drop cable must be used,
secured to the appropriate fastening hole in the pump head.
4.3 Tank installation
There must be suitable means of protecting the pump from dry running. Suction filters must be
checked and cleaned at 6 monthly intervals to prevent dry running due to filter blockage.
Dry running will seriously damage the pumps bearings and bushing. Never test the pump out of
the water.
5. Electrical Connection
5.1 Connection
Single phase versions have enclosed capacitor.
Three phase version have been linked internally with windings set for 380-415V at the factory.
The pump must be connected to the three phase power line through a suitable control panel.
5.2 Overload protection
Single phase pumps are equipped with a built – in overload protection (automatic reset).
Three phase pumps require an external protection consisting of a magnetic-thermal overload cut
out and thermal relay set to the rated current of the pump.
6. Safety Instructions
• Pay attention to the working limits (par. 3) improper use may damage the pump and other
property and cause injury to people.
• The pump is not designed to handle flammable or hazardous liquids.
• Make sure the rated voltage matches the mains voltage.
• The mains connection and grounding must be performed by a (qualified electrician)
• For connection to the mains use a multiple-pole switch with at least 3mm distance between
contacts.
• Do not allow the pump to run dry or operate out of the water.
• Do not use the power supply cable to lift or move the pump.
• The drop cable must be of suitable length for the installation/tank depth.
• The pump may fall into the tank, a safety cable must be used.
• Operate the pump within the working limits.
3
7. Maintenance
Make sure the pump is unplugged or, for three phase pumps the main switch is disconnected be-
fore carrying out any maintenance operations. Periodically check the delivery pressure and current
adsorption. A delivery pressure decrease may indicate pump wear or a blocked suction filter. In-
creased current absorption indicates abnormal mechanical friction in the pump or motor.
8. Troubleshooting
Fault Possible Cause Remedy
Pump fails to start
Power supply failure
Control panel fuse blown
MCB tripped
Reinstate incoming power supply
Replace power supply fuse
Reset MCB
Pump fails to stop System pressure low due
to large leak Switch unit off until leak is repaired
Pump switches on
and off quickly
Air in system
Vessel pre-charge incorrect
Purge air from pumps and pipework
Check vessel pre-charge and charge as
necessary with Nitrogen or dry air
Pump runs but will
not make pressure
Pump air locked
Non-return valve jammed
Incorrect rotation
Passing too much water
Suction filter blocked
Check pump is primed
Clean/ replace valve
Check phase sequence for three phase pump
Check system for leaks
Clean/ replace filter
Pump overheating Pump partially seized Remove pump and check for foreign objects
Xylem Water Solutions UK Limited
Millwey Rise Industrial Estate, Axminster, Devon EX13 5HU - UK
Tel: 01297 630230 Fax: 01297 630270
www.lowara.co.uk www.xyleminc.com
Lowara is a trademark of Xylem Inc. or one of its subsidiaries. © 2016 Xylem, Inc.
Lowara reserve the right to make modifications without prior notice.
Code UKLIT0144 P04/16
4
Rain Water Scuba Pump Parts / Associated Accessories
1 SC Pump
2 Pump Body with 1 1/4” Female Suction Port
3 1 1/4” NRV (Non Return Valve) Suction filter
accessories
are not
included with
the pump
4 Suction Hose (length to suit application)
5 Suction Strainer (minimum mesh size 0.25mm)
6 Ball Float
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