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PowerGuard Lite
Flat Battery Protection System
User & Installation Guide
Version 2.2
Merlin Equipment Ltd
Unit 4, Cabot Business Village
Poole
Dorset BH17 7BA
United Kingdom
T: +44 (0) 1202 697979
www.merlinequipment.com
Merlin Equipment: PowerGuard Lite manual V2.2 10/15
Page 1
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Summary of Contents for Merlin PowerGuard Lite
- Page 1 PowerGuard Lite Flat Battery Protection System User & Installation Guide Version 2.2 Merlin Equipment Ltd Unit 4, Cabot Business Village Poole Dorset BH17 7BA United Kingdom T: +44 (0) 1202 697979 www.merlinequipment.com Merlin Equipment: PowerGuard Lite manual V2.2 10/15 Page 1...
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Page 2: Declaration Of Conformity
Part Numbers: 19-4015 Merlin PowerGuard Lite – 12V 19-4016 Merlin PowerGuard Lite – 24V 19-4017 Merlin PowerGuard Lite – OEM Version (CPU Only) Are in conformity with the requirements of the following Directives of the European Union: EMC Directive 2004/108/EEC... - Page 3 Your attention is drawn to “ and “ statements throughout this manual. Caution!” “ refers to practices that may cause damage to the PowerGuard Lite or your electrical system. Warning! “ ” identifies practices that may cause injury or death.
- Page 4 Many thanks for your recent purchase of a Merlin PowerGuard Lite. PowerGuard Lite is a flat battery protection device designed to prevent 12 and 24V battery banks running flat. Please note that contactors used are specific to voltage so ensure that the part number ordered is correct for either 12 or 24V DC systems (The control unit may be used on 12 or 24V systems and are adjusted using an internal link).
- Page 5 4. Inhibit Function PowerGuard Lite is fitted with an Inhibit Function. When there is +12V/24V on this wire, the PowerGuard Lite will not disconnect the batteries regardless of battery condition. We normally recommend the Inhibit wire to be connected to the engine ignition switch.
- Page 6 PowerGuard Lite Contactor main terminals. A linking cable from the other main contactor terminal should then be made up to the battery positive terminal. This cable should be the same size and specification as the existing cabling.
- Page 7 9. Adjusting Settings The battery disconnect (‘cut-out’) voltage threshold and timer are user/installer adjustable. To access the controls, remove the four screws from the PowerGuard Lite CPU and remove the unit’s cover. Within, you will see the Printed Circuit Board (PCB).
- Page 8 . 10. 12/24V Operation PowerGuard Lite is shipped as a 12 or 24V kit. However, OEM versions may need adjusting to operate on 12 or 24V systems.
- Page 9 Merlin Power Systems will repair or replace faulty product during this period at its sole discretion subject to the failure not being a result or caused by any of the following conditions: 1. Reverse polarity, connection to the incorrect voltage or reverse contactor polarity.
- Page 10 FORM OF ACTION, SHALL NOT EXCEED THE PURCHASE PRICE OF THE MERLIN PRODUCTS DESCRIBED HERE IN. Merlin Equipment Limited reserves the right to revise and improve its products as it sees fit. This publication describes the state of this product at the time of its publication and may not reflect...
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