Xylem Lowara Scuba Manuale utente

Rain Water Scuba Pump

Operating, Installation and Maintenance Instructions

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.

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.

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

e-mail: [email protected]

www.lowara.co.uk www.xyleminc.com

Lowara reserve the right to make modifications without prior notice.

Code UKLIT0144 P04/16

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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