Murphy HD9063 Series Crank Disconnect Set Point Adjustment, Warranty, Adjusting the Speed Switch

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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

or

Underspeed Potentiometer

Potentiometer

(HD9063-USOS)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Overspeed Potentiometer

 

 

 

 

RE A

SE

 

 

 

 

RE A

SE

 

 

 

 

C

 

 

 

 

 

C

 

 

 

 

I

N

 

 

 

 

 

I

N

 

 

Crank

 

 

 

 

 

 

 

 

 

 

 

 

Overspeed

Disconnect

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EXT.

 

 

 

 

LED

or

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MAG.

 

 

 

 

 

 

 

 

 

 

 

PICKUP

 

 

 

 

 

Underspeed

 

NC

 

 

 

 

 

 

EXT.

 

NC

LED

 

NO

 

 

EXT.

 

 

TEST

 

NO

 

 

 

 

 

 

 

 

 

 

 

C

 

 

POWER

 

 

 

 

 

C

 

 

 

 

 

(+) ( ) (+) ( )

 

 

 

 

 

 

 

1

2

3

4

5

6

7

8

 

9

10 11 12

Figure 6

Crank Disconnect Set Point Adjustment

1.If engine serves as a backup for an electric pump or other motor driven device, turn off the associated electric motor.

2.Reset any associated switches.

3.Ground engine ignition system or shut off fuel to engine to dis- able engine from starting.

4.Loosen locknut on Crank Disconnect set point potentiometer and turn potentiometer fully clockwise.

5.Operate electrical switch(es) as appropriate so that engine will begin to crank.

6.While engine is cranking, slowly turn Crank Disconnect Set point potentiometer counterclockwise until Crank Disconnect LED lights (Figure 6). Engine should stop cranking.

7.Now turn the potentiometer clockwise 1/16 turn.

8.Enable engine and allow it to start, verifying that starter disengages. If starter motor stays engaged too long, lower set point slightly by turning potentiometer counterclockwise in increments of no more than 1/16 turn. Re-test after each adjustment by starting engine, and continue adjustment until starter disconnects as soon as engine starts.

If starter motor does not stay engaged long enough, raise set point slightly by turning potentiometer clockwise in increments of 1/16 turn. Re-test after each adjustment.

9.Tighten locknut on Crank Disconnect set point potentiometer.

NOTE: A starter protection feature prevents starter from being engaged until engine almost completely stops after running.

Overspeed and Underspeed

Set Point Adjustment

OVERSPEED

1.Loosen locknut on Overspeed set point potentiometer and turn potentiometer fully clockwise.

2.Start engine and run at highest normal operating RPM.

3.Slowly turn Overspeed adjustment potentiometer counter- clockwise until overspeed switch trips or engine shuts down. The LED light should flash.

4.Turn potentiometer approximately 2° clockwise, then

tighten locknut.

5.Reset switches as applicable and restart engine.

NOTE: An overspeed test switch connected as shown in Figure 3 provides a means for decreasing set point for test purposes.

6.If a test push button is installed, press push button and verify that overspeed LED (Figure 6) flashes and engine shuts down or switch trips.

UNDERSPEED

NOTE: Underspeed is available on HD9063-USOS models only.

1.Loosen locknut on Underspeed set point potentiometer and turn potentiometer fully counterclockwise.

2.Start engine and run at lowest normal operating RPM.

3.Slowly turn Underspeed adjustment potentiometer clockwise until underspeed switch trips or engine shuts down. The LED light should flash.

4.Turn potentiometer approximately 2° counterclockwise, then tighten locknut.

5.Reset switches as applicable and restart engine.

NOTE: An overspeed test switch connected as shown in Figure 3 provides a means for decreasing set point for test purposes.

6.If overspeed test push button is installed, press push button and verify that overspeed LED (Figure 6) flashes and engine shuts down or switch trips.

Warranty

A limited warranty on materials and workmanship is given with this FW Murphy product. A copy of the warranty may be viewed or printed by going to www.fwmurphy.com/support/warranty.htm

FW Murphy

P.O. Box 470248

Tulsa, Oklahoma 74147 USA +1 918 317 4100

fax +1 918 317 4266 e-mailsales@fwmurphy.com www.fwmurphy.com

CONTROL SYSTEMS & SERVICES DIVISION P.O. Box 1819; Rosenberg, Texas 77471; USA +1 281 633 4500 fax +1 281 633 4588 e-mail sales@fwmurphy.com

MURPHY DE MEXICO, S.A. DE C.V.

Blvd. Antonio Rocha Cordero 300, Fracción del Aguaje San Luis Potosí, S.L.P.; México 78384

+52 444 8206264 fax +52 444 8206336 Villahermosa Office +52 993 3162117 e-mailventas@murphymex.com.mx www.murphymex.com.mx

FRANK W. MURPHY, LTD.

Church Rd.; Laverstock, Salisbury SP1 1QZ; U.K. +44 1722 410055 fax +44 1722 410088 e-mailsales@fwmurphy.co.uk www.fwmurphy.co.uk

MURPHY SWITCH OF CALIFORNIA

41343 12th Street West

Palmdale, California 93551-1442; USA

+1 661 272 4700 fax +1 661 947 7570 e-mailsales@murphyswitch.com www.murphyswitch.com

MACQUARRIE CORPORATION 1620 Hume Highway Campbellfield, Vic 3061; Australia

+61 3 9358 5555 fax +61 3 9358 5558 e-mailmurphy@macquarrie.com.au

 

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R

 

 

 

 

 

 

E

 

 

GISTER

 

 

 

 

 

 

USA–ISO 9001:2000 FM 28221

UK–ISO 9001:2000 FM 29422

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Contents Specifications Power SupplyFrequency Signal DescriptionCrank Disconnect Relay Overspeed and Underspeed RelayHD9063 and HD9063-USOS MountingMagnetic Pickup Installation see Figure Gap AdjustmentWiring Magnetic Pickup InstallationCrank Disconnect Set Point Adjustment Overspeed and Underspeed Set Point AdjustmentWarranty Adjusting the Speed Switch