Starts at low level, stops at high, Starts at high level, stops at low, Single magneto shutdown – Murphy DF Series User Manual

Page 4: Dual magneto shutdown, Typical wiring service parts

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DF-94063N page 4 of 4

TYPICAL WIRING

SERVICE PARTS

N.O.

C

N.C.

HIGH

N.O.

C

N.C.

LOW

MOTOR

DF755

#1

DF755

#2

Starts at Low Level, Stops at High

Start motor when predetermined low level is reached and stop when high
level is reached. Keeps tank level within selected limits. Motor starter
equipped with H.O.A.

MOTOR

N.O.

C

N.C.

HIGH

N.O.

C

N.C.

LOW

DF755

#1

DF755

#2

Starts at High Level, Stops at Low

Start motor when predetermined high level is reached and stop when low level
is reached. Motor starter equipped with H.O.A.

Single Magneto Shutdown

Wiring of magneto to N.O. switch terminal will shut down engine at prede-
termined high level, shown below. Wire to N.C. terminal to shutdown on
low level.

N.O.

C

N.C.

6

2

3

5

Magneto

Magneto

1

4

Jumper #2 & #5

Model MS2120

Dual Magneto Shutdown

Shutdown dual magneto engines using Murphy MS2120 Magnetic Switch.
Diagram below shows hookup for low level shutdown. Wiring changes and
mounting locations are necessary for high level shutdowns.

DF755

Description Part

Number

Cover (aluminum)

15050081

Case (aluminum)

15050082

Cover Screws (3), #6–32 x 5/16 round head

80040607

SPDT snap-switch and movement assembly/repair kit (5 amp)

15000122

Screws (3) for switch assembly to case, #6–32 x 1/4 round head

80040605

Diaphragm repair kit

15000123

Bottom Plate (1 NPT connection)

15050083

Bracket and movement repair kit

15000313

SPDT snap-switch and insulator repair kit (5 amp)

15000121

DF755EX

Cover (aluminum)

15050154

Case (aluminum)

15050155

Gasket

15050305

SPDT snap-switch and movement assembly/repair kit (5 amp)

15000118

Screws (2) for switch assembly to case, #6–32 x 1/4 round head

80040605

Actuator assembly/repair kit

15000119

Diaphragm repair kit

15000123

Bottom Plate (1 NPT connection)

15050083

Screw (1), #8–32 x 1/4 round head

80040814

Terminal cup washer

00000827

Plug 1/8 plastic pipe hex (DF755EX)

86060203

Connector, 1/4 tube x 1/8 pipe male (DF756)

85030402

Plug 1/2 NPT hex (brass)

86060801

SPDT snap-switch and insulator repair kit (5 amp)

15000117

DF757

Cover (aluminum)

15050081

Case (aluminum)

15050594

Cover Screw (3), #6–32 x 5/16 round head

80040607

SPDT snap-switch and bracket assembly/repair kit (5 amp)

15000174

Screws (2) for switch bracket and assembly to case (#6–32 x 1/4 round head) 80040605
Spring and piston assembly/repair kit

15000190

Diaphragm repair kit

15000123

Bottom Plate (1 NPT connection)

15050083

SPDT snap-switch and insulator repair kit (5 amp)

15000230

MAGNETO

N.O.

C

N.C.

CONTROL SYSTEMS & SERVICES DIVISION
P.O. Box 1819; Rosenberg, Texas 77471; USA
+1 281 633 4500 fax +1 281 633 4588
e-mail [email protected]

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-mail [email protected]
www.murphymex.com.mx

FRANK W. MURPHY, LTD.
Church Rd.; Laverstock, Salisbury SP1 1QZ; U.K.
+44 1722 410055 fax +44 1722 410088
e-mail [email protected]
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-mail [email protected]
www.murphyswitch.com

In order to consistently bring you the highest quality, full featured products, we reserve the right to change our specifications and designs at any time.

MACQUARRIE CORPORATION
1620 Hume Highway
Campbellfield, Vic 3061; Australia
+61 3 9358 5555 fax +61 3 9358 5558
e-mail [email protected]

FW Murphy
P.O. Box 470248
Tulsa, Oklahoma 74147 USA
+1 918 317 4100
fax +1 918 317 4266
e-mail [email protected]
www.fwmurphy.com

R

E

G ISTERE

D

USA–ISO 9001:2000 FM 28221

UK–ISO 9001:2000 FM 29422

Printed in U.S.A.

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