INTRODUCTION
Thank you for choosing Merlin PowerGuard Pro!
PowerGuard Pro is a remote battery switching system. This allows you to mount battery master
switches in convenient locations such as dashboards or helm panels without needing to run
heavy duty cables throughout the vehicle/boat.
PowerGuard Pro is also a Flat Battery Protection System. Using sophisticated battery
monitoring techniques, PowerGuard Pro detects when batteries start to run low. When the
batteries have run below a certain level for a pre-set period of time, the battery will be
disconnected. Note: on the primary battery circuit, this is inhibited from happening when the
engine ignition is switched on.
PowerGuard Pro will operate on certain hybrid and electric vehicles and those fitted with both
standard lead/acid, AGM, Gel and Lithium-Ion Batteries.
Please take the time to read and understand this manual before installation and use.
CONTENTS
WARNING.......................................................................................................................................... 2
PRECAUTIONS ................................................................................................................................... 3
APPROVALS AND CONFORMITY ......................................................................................................... 4
CERTIFICATE OF CONFORMITY ....................................................................................................... 4
INTRODUCTION ............................................................................................................................. 5
CONTENTS ......................................................................................................................................... 5
INSTALLATION ................................................................................................................................... 7
POSITIONING OF PARTS ................................................................................................................. 7
FIRST FIX INSTALLATION ................................................................................................................ 7
ECU INSTALLATION ........................................................................................................................ 8
WIRING SCHEMATICS .................................................................................................................... 9
NOTES ......................................................................................................................................... 12
SET UP AND ADJUSTMENTS ............................................................................................................. 13
PROGRAMMING .............................................................................................................................. 15
POWERGUARD PRO OPERATION ..................................................................................................... 16
AFTER INSTALLATION ...................................................................................................................... 16
PRODUCT SPECIFICATIONS .............................................................................................................. 17
PRODUCT ACCESSORIES................................................................................................................... 17
WARRANTY ..................................................................................................................................... 18
REF: QSF-030
Issue: D
Merlin Equipment Ltd
PowerGuard Pro - User and Installation Guide
Page: 5 of 18
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