Murphy HD9063 Series manual

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Table of contents for the manual

  • Page 1

    HD-96044N page 1 of 4 Installation and Operation Instructions for Dual Set Point Speed Switch HD9063 Series HD-96044N Revised 03-01 Section 20 ( 00-02-0179) Please read the following information befor e installing . A visual inspection of this product for damage during shipping is recommended before mounting. It is your responsibility to have a qua[...]

  • Page 2

    HD-96044N page 2 of 4 Crank Disconnect Relay An understanding of the crank disconnect function for your par- ticular system is critical to speed switch installation. It is also important to consider the 5 A current limitation of K1 relay con- tacts. Figure 1 illustrates the use of a low-current pilot relay to operate the high-current starter soleno[...]

  • Page 3

    HD-96044N page 3 of 4 CAUTION: PERFORM THE WIRING OPERA TION WITH THE PO WER SOURCE “OFF” MAGNETIC PICKUP INSTALLATION A magnetic pickup is an AC generator . It is normally installed into the flywheel housing of an internal combustion engine, so that the starter ring gear acts upon it to generate a voltage pulse each time a gear tooth passes th[...]

  • Page 4

    HD-96044N page 4 of 4 ADJUSTING THE SPEED SWITCH Adjustment of the Dual Set point Speed Switch is performed when the system is otherwise operational in all respects. See Figure 6 for location of Crank Disconnect, Underspeed and Overspeed potentiometers. Crank Disconnect Set Point Adjustment 1. If engine serves as a backup for an electric pump or ot[...]