Murphy Engine Panels WD300-LV user manual

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WS-93002N
Revised 04-06
Section 30
(00-02-0191)
Murphy W-Series Engine Panels
General Installation Instructions
Read the following information before installing. These installation instructions are typical for a variety of W-Series engine panels and may
not reflect the exact configuration for your panel assembly. It is assumed that the installer is familiar with engine operations and has basic
mechanical and electrical skills. If additional assistance is needed, please call your Murphy dealer or

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INSTALLATION INFORMATION continued Connecting High Temperature Electric Wiring Swichgage instrument 1. Disconnect the battery ground cable or otherwise disconnect LIQUID COOLED ENGINES: electric power from the engine and panel. 1. Drain engine coolant to a level below the temperature sensing con- 2. See the appropriate typical or specific wiring diagram for the nerve nection/plug. This connection is on the engine side of the thermostat center/magnetic switch in your panel. generally near the th

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® Setting the SWICHGAGE contacts Testing the SwichgageInstruments 1. Face mounted contacts are set using a 1/16 in. hex wrench. For face mounted contacts (20P, 20T, 20PW7, etc.): 1 2. Some models such as 20PE, 20TE, etc. may not have field adjust- 1. With the engine running; use a /16 in. hex wrench to rotate the con- ment. Consult the factory if in doubt. tact until it touches the gauge pointer. Do NOT force the contact against the pointer. Engine should shut down and/or alarm should 3. Observ

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TYPICAL WIRING WITH 518PH TATTLETALE CLOSED LOOP CAUTION: This wiring is typical for Murphy W-Series small engine panels. Items shown may or may not be included in your panel; however, the circuit is typical of how the component will be wired if it is included. Refer to installation instructions for the specific component if included. For off-panel items such as shutdown devices, see specific instructions supplied with the device. Tachometer 518PH WIRED CLOSED LOOP MUST specify 12 or 24 VDC B +

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TYPICAL WIRING DIAGRAM WITH 518PH TATTLETALE JUMPERED CAUTION: This wiring is typical for Murphy W-Series small engine panels. Items shown may or may not be included in your panel; however, the circuit is typical of how the component will be wired if it is included. Refer to installation instructions for the specific component if included. For off-panel items such as shutdown devices, see specific instructions supplied with the device. Tachometer 518PH WIRED WITH JUMPER Must specify 12 or 24 VDC

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TYPICAL WIRING DIAGRAM WITH 760A AND 761APH CAUTION: This wiring is typical for Murphy W-Series small engine panels. Items shown may or may not be included in your panel; however, the circuit is typical of how the component will be wired if it is included. Refer to installation instructions for the specific component if included. For off-panel items such as shutdown devices, see specific instructions supplied with the device. Tachometer 760A and 761APH Must specify 12 or 24 VDC. 760A/761APH Spec

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TROUBLESHOOTING TIPS Make sure the voltage and current requirements are within the W-Series ratings. Determine the polarity for the application. Use appropriate wire size for voltage and current. These instructions will assist in the correction of most problems which you may encounter with the panel. Before checking the list, first refer to the wiring connections and operation procedures and make sure the panel is properly installed. If problems persist after making the following checks, consul