TYPICAL WIRING
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. |
| HIGH |
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| N.O. |
| C | DF755 |
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| |
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| #1 |
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| N.C. |
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| N.O. |
| C | DF755 |
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| #2 |
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| N.C. |
MOTOR |
| LOW |
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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.
MAGNETO
N.O.
C
N.C.
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.
|
| HIGH |
|
| N.O. |
| C | DF755 |
| #1 | |
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| |
|
| N.C. |
|
| N.O. |
| C | DF755 |
| #2 | |
|
| |
|
| N.C. |
MOTOR |
| LOW |
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.
Model MS2120
Magneto |
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6 | 1 | 2 | 3 | 4 | 5 | N.O. |
Magneto |
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C
N.C.
Jumper #2 & #5
SERVICE PARTS
DF755
Description | Part Number |
Cover (aluminum) | 15050081 |
Case (aluminum) | 15050082 |
Cover Screws (3), | 80040607 |
SPDT | 15000122 |
Screws (3) for switch assembly to case, | 80040605 |
Diaphragm repair kit | 15000123 |
Bottom Plate (1 NPT connection) | 15050083 |
Bracket and movement repair kit | 15000313 |
SPDT | 15000121 |
DF755EX
Cover (aluminum) | 15050154 |
Case (aluminum) | 15050155 |
Gasket | 15050305 |
SPDT | 15000118 |
Screws (2) for switch assembly to case, | 80040605 |
Actuator assembly/repair kit | 15000119 |
Diaphragm repair kit | 15000123 |
Bottom Plate (1 NPT connection) | 15050083 |
Screw (1), | 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 | 15000117 |
DF757
Cover (aluminum) | 15050081 |
Case (aluminum) | 15050594 |
Cover Screw (3), | 80040607 |
SPDT | 15000174 |
Screws (2) for switch bracket and assembly to case | 80040605 |
Spring and piston assembly/repair kit | 15000190 |
Diaphragm repair kit | 15000123 |
Bottom Plate (1 NPT connection) | 15050083 |
SPDT | 15000230 |
FW Murphy
P.O. Box 470248
Tulsa, Oklahoma 74147 USA +1 918 317 4100
fax +1 918 317 4266
CONTROL SYSTEMS & SERVICES DIVISION P.O. Box 1819; Rosenberg, Texas 77471; USA +1 281 633 4500 fax +1 281 633 4588
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
FRANK W. MURPHY, LTD.
Church Rd.; Laverstock, Salisbury SP1 1QZ; U.K. +44 1722 410055 fax +44 1722 410088
MURPHY SWITCH OF CALIFORNIA
41343 12th Street West
Palmdale, California 93551-1442; USA
+1 661 272 4700 fax +1 661 947 7570
MACQUARRIE CORPORATION 1620 Hume Highway Campbellfield, Vic 3061; Australia
+61 3 9358 5555 fax +61 3 9358 5558
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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.
Printed in U.S.A.
