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00-02-0657
nd
revision A, 22 September 2008
Keystart 9620 series
catalogue section 40 & 75
Engine & Generator Controls
Installation Instructions
Please read the following information before installing. A visual inspection of this product for damage during
shipping is recommended before installation. It is your responsibility to ensure that qualified mechanical and electrical
technicians install this product. If in doubt, please contact your local Murphy representative.
GENERAL INFORMATION
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GENERAL INFORMATION (cont.) Front view and operation Rear view, connections and settings ELECTRICAL CONNECTION WARNING: DANGER OF INJURY OR DEATH. Keystart 9621 controllers allow connection of high voltage AC circuits. Before connection, disconnection or handling of these units, ensure that all AC and DC power supplies are isolated. Connection to or disconnection from DANGER ! live wiring may also cause damage to the Keystart’s internal components. HIGH VOLTS Electrical conne
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ELECTRICAL CONNECTION (cont.) Terminal functions (cont.) Pin Function Pin Function 3 Start (crank) output With links J2 & J3 ON: DANGER ! Pin 3 gives a positive DC, 16 Amp rated output when the key 13 Generator AC Live HIGH VOLTS is switched to position II (start/crank). To prolong keyswitch 14 Generator AC Neutral contact life, connect a slave relay (with suppressed coil) When configuration links J2 and J3 are fitted (the default factory between pin 3 and the engine starte
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SPEED SENSING AND CALIBRATION Maintenance and Warranty Keystart model 9621 includes a speed sensing input and automatic shutdown protection for engine overspeed faults. Before use, model The Keystart series contains no user-serviceable parts. Maintenance 9621’s speed input must be correctly configured (using circuit-board is therefore limited to the following preventative checks: links J2 and J3) and calibrated (using potentiometers VR2 and VR3). • Check that all electrical connections a
