Xylem LOWARA Manuel
Presfix Fill Set
1
Operating and Maintenance Instructions
EC Declaration of conformity
Xylem Water Solutions UK Limited declare that the Presfix pressurisation set conforms to the requirements of
the Machinery Safety Directive 2006/42/EC.
Conforming to the UK Health & Safety Requirements 2008 No.1597
Water supply (Water fittings) regulations 1999
Code of practice for heating and chilled water systems BS7074 (parts 1, 2 & 3)
Signed: Position: Engineering manager Date: 20-04-2016 Revision B
Clive Willmott
Introduction
This leaflet contains information to enable the safe installation and operation of the products mentioned above.
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 instruction where electrical hazard is involved.
Safety instruction where noncompliance could cause damage to the equipment.
Instruction for safe use
This product has been designed for the pressurisation of sealed heating, chilled water and closed-
condenser water systems to the operating conditions shown.
This product should not be installed until this leaflet has been studied carefully.
Handling, transportation and installation of this equipment should only take place with the proper
use of lifting equipment.
This product must be stored in a frost-free dry environment.
Noise Emissions
This equipment operates at a noise level lower than 70dBA.
Protection degree IP2X
Installation
The Presfix Fill unit is despatched mounted on a wooden pallet and covered in a protective film, it is recom-
mended that the unit be retained in the protective packaging until the product is to be installed.
The unit will arrive pre-packaged and wired ready for installation.
This product has been fully run tested at our works under simulated site conditions.
The unit should be sited in a dry clean well-ventilated area with good all round access.
Electrical connections
The input supply to the switched spur is fed from the main pressurisation unit output terminals 1,2&3. This
output is only active when the main pressurisation unit is calling for water top up.
The low water cut out float switch is wired back to the main pressurisation unit terminals 43&45
Drawing M10127-1 attached gives connection details. The cable must be of adequate size to
carry the motor full load current. This is shown on the duty plate. All non power caballing should
be limited to 2.5mm².
All connections must be made using the appropriate wiring drawings for the equipment being
installed, with particular attention being paid to the supply voltages.
The supply voltage is shown on the set duty plate.
Never operate this product with the control panel or switched spur lid removed.
It is essential that this equipment is earthed to the building earth system.
The base frame must be earth bonded directly to the building earth system.
All wiring should be arranged such that it enters the control boxes through the appropriate
cable glands.
Water supply and system connection
Connect the Presfix Fill set ½”BSP ball valve (left side of break tank) to a suitable water supply, incorporating
an approved stop cock.
If the pressure available at the ball valve is below 0.3 bar, a low pressure orifice must be
obtained and fitted.
Extend the ¾” plastic overflow pipe from the Presfix break tank to a position where an overflow
will be noticed and rectified. Ensure the warning pipe is able to handle the incoming water
volume, if this is not the case then a reducing valve should be fitted to the incoming water supply.
Connect the pressurisation port ½” BSP (right hand side of unit) to the main system expansion vessel Fill
point , details of connection point will be found in the main pressurisation unit O&Ms
Note: This product has a type AB air gap and contains a weir which is intended to spill over if a catastrophic
failure occurred, If it is not acceptable to spill water directly to the floor then this product should be mounted
on a try which should then have a discharge connection to drain.
2
3
Commissioning
1. Commissioning should be carried out in conjunction with the main pressurisation set commissioning de-
tails. Fill the main system with water via the quick fill filling loop to the system fill pressure, this
filling loop must comply with local water authority bylaws and contain double check valves. The
filling loop must be completely removed after the system has been filled.
The pressurisation unit/Fill set must never be used to fill the system.
The maximum running time for pumps fitted to the Fill set must not exceed 4 hours in any 24
hour period.
2. Turn on the water supply feeding the Fill set break tank.
Water treatment crystals/chemicals must never be introduced to the system via the break tank.
3. Check that the pump has been fully evacuated of all air by removing the bleed screw from pump and
allow water to escape until no air is present. Replace bleed screw.
Operation
Switch the main power supply to the pressurisation system to the on position. Turn the switched spur situated
at the front of the Fill unit to the on position.
.
When the main pressurisation unit senses that the system is low on water it will give a 230v supply to the Fill
set and start the Fill set pump, this will pump water into the pressurisation set vessel which will be sitting at at-
mospheric pressure, when the main vessel senses that it now has the correct water content it will switch off
the supply to the Fill set pump. The Fill set will remain inactive until another signal is given from the main
pressure set to call for more water.
Flow regulating valve
The Fill set has a flow regulating valve which should be set to approximately 5l/m this is to ensure that the
break tank inlet water supply can keep up with demand. This can be adjusted to give a larger volume pro-
vided the main water supply can keep up.
Low level float switch
The low level float switch in the Fill unit will monitor the break tank water level and signal the main pressurisa-
tion to switch off the power to the Fill unit preventing the pump from running dry.
Maintenance
Routine check (3 monthly intervals)
1. Check that the pump seal is not leaking.
2. Check the pump is not seized and develops the correct pressure.
3. Check that the pump operates without undue noise or vibration.
4. Check that the motor runs without overheating.
Routine check (6 monthly intervals)
1. Check the break tank is clean and that the correct water level has been maintained.
2. Check that all screws are tight on electrical components.
3. Check that the earth connections are tight and making good contact.
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 UKLIT0124 P04/16
4
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