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Manual Murphy MC-900 Series

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  • Murphy MC-900 Series - page 1

    SERIES MC-900 MURPHYMA TIC ® MANUAL GENERA TOR ENGINE CONTROL SYSTEM DESIGN, INST ALLA TION AND OPERA TING MANUAL MC-9142N Revised 12-00 Section 40 ( 00-02-0202) ...

  • Murphy MC-900 Series - page 2

    T able of Contents Section 1: Introduction page 1 1-1 System ............................................................................................................................................... 1 1-2 Models .................................................................................................................................... ...

  • Murphy MC-900 Series - page 3

    Section 1: Introduction 1-1 System. 1-1.1 The MURPHYMA TIC ® Manual Generator Engine Control System, Series MC-900 is designed to meet the requirements of the engine control and shutdown for manual start generator engines. By combining one of the MC-900 series controls with generator instruments, a complete engine generator control panel can be pr ...

  • Murphy MC-900 Series - page 4

    3-2 MC-900. 3-2.1 Control / Display Module. The Control / Display Module, figure 3-2.1, includes the control and test switches, the solid state logic elements and shutdown T A TTLET ALE ® lights that make up the generator engine control for a four cycle engine. 3-2.1.1 Mode Selector Switch, OFF-RUN-ST AR T : (a) OFF; turns off the control system a ...

  • Murphy MC-900 Series - page 5

    or Start and no shutdown T A TTLET ALE ® circuit is latched on. This can be used to signal that the generator engine is ready to start or is running. 3-3 MC-900-2. 3-3.1 Control / Display Module. The Control / Display Module, figure 3-2.1, is also used as on the Model MC-900-2. 3-3.2 Relay Module. The Relay Module, figure 3-3.2, includes all of th ...

  • Murphy MC-900 Series - page 6

    4 5-1/2 in. (140 mm) 3-3/4 in. (95 mm) 3/16 in. (5 mm) dia. 4 places 5-5/8 in. (143 mm) 2-13/16 in. (71 mm) 3 in. (76 mm) 3-3/8 in. (86 mm) 6-3/4 in. (171 mm) 9-3/8 in. (238 mm) 6 in. (152 mm) 4-15/32 in. (114 mm) Mounting Holes 1/8 in. (3 mm) diameter 5 in. (127 mm) maximum between MC-900 and relay module 1-7/8 in. (48 mm) clearance 1-1/2 in. (38 ...

  • Murphy MC-900 Series - page 7

    5 15 26 4 27 28 4 29 30 31 32 33 34 FUSE B+ OUT B– TO HOURMETER B GROUND MAGNETIC PICKUP LOW OIL PRESS. GROUND HIGH WATER TEMP. SPARE #1 SHUTDOWN INPUT SPARE #2 SHUTDOWN INPUT SPARE #3 SHUTDOWN INPUT SPARE #4 SHUTDOWN INPUT 35 36 37 38 39 40 41 42 43 44 45 46 OVERCRANK LIGHT OUTPUT OVERSPEED LIGHT OUTPUT LOW OIL PRESS. LIGHT OUTPUT HIGH WATER TEM ...

  • Murphy MC-900 Series - page 8

    6 15 26 4 27 28 4 29 30 31 32 33 34 FUSE B+ OUT B– TO HOURMETER B GROUND MAGNETIC PICKUP LOW OIL PRESS. GROUND HIGH WATER TEMP. SPARE #1 SHUTDOWN INPUT SPARE #2 SHUTDOWN INPUT SPARE #3 SHUTDOWN INPUT SPARE #4 SHUTDOWN INPUT 35 36 37 38 39 40 41 42 43 44 45 46 OVERCRANK LIGHT OUTPUT OVERSPEED LIGHT OUTPUT LOW OIL PRESS. LIGHT OUTPUT HIGH WATER TEM ...

  • Murphy MC-900 Series - page 9

    7 across the coil to suppress reverse voltage that is generated whenever the inductive load is de-energized. This will protect the electronic components in the MC-900 and should prevent operating malfunction due to noise. The “rule of thumb” for sizing the reverse diode is to use one with a PIV (Peak Inverse V oltage) rating equal to the operat ...

  • Murphy MC-900 Series - page 10

    8 been adjusted for proper running speed, turn Mode Selector switch OFF . (e) All lights on the back of the MC-900 should go off and the engine stop. If engine does not stop, check run solenoid to be sure it has returned to the stop position. 4-4.3 Overspeed Switch Setting; T o set the speed switch, proceed as follows: (a) T urn Mode Selector switc ...

  • Murphy MC-900 Series - page 11

    7-1.2 Other tools which may be required are: 7-1.2.l AC/DC V oltmeter for taking voltage readings and an Ohmmeter for testing resistance of wires and connections. 7-1.2.2 Jumper wires with alligator clips to bypass or simulate circuit closures. DO NOT USE THESE JUMPER WIRES TO CHECK IF VOL T AGE IS PRESENT A T A TERMINAL BY DRA WING AN ARC TO GROUN ...

  • Murphy MC-900 Series - page 12

    Input 13.8 V oltage 27.6 Input 13.8 V oltage 27.6 Input 13.8 V oltage 27.6 Input 13.8 V oltage 27.6 10 1 13.8 27.6 13.8 27.6 13.8 27.6 13.8 27.6 4 0 00 00 0 00 5 13.8 27.6 0 0 0 0 13.8 27.6 6 0 0 13.8 27.6 13.8 27.6 0 0 7 0 00 00 0 00 8 0 00 00 0 00 9 0 00 00 0 00 10 0 0 0 0 0 0 13.8 27.6 1 1 00 0 0 000 0 1 2 00 0 0 000 0 1 3 00 0 0 000 0 1 4 00 0 ...

  • Murphy MC-900 Series - page 13

    Section 8: Replacement Parts 8-1 Replacement Parts 8-1.1 T able 8-1 covers all of the replaceable components of the MC-900 Series Generator Engine Controls. The part numbers shown are Frank W . Murphy Mfr . part numbers and may not appear on the individual parts. 8-1.2 Each complete control is made up of a Control / Display Module, a Relay Module a ...

Manufacturer Murphy Category Portable Generator

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A manual, also referred to as a user manual, or simply "instructions" is a technical document designed to assist in the use Murphy MC-900 Series by users. Manuals are usually written by a technical writer, but in a language understandable to all users of Murphy MC-900 Series.

A complete Murphy manual, should contain several basic components. Some of them are less important, such as: cover / title page or copyright page. However, the remaining part should provide us with information that is important from the point of view of the user.

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2. Contents - index of all tips concerning the Murphy MC-900 Series, that we can find in the current document
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5. FAQ - Frequently Asked Questions
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