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AC Power
Primary power required for the MS-4424 is 120 VAC, 50/60 Hz, 1.2 amps and primary power for the MS-
4424E is 220/240 VAC, 50 Hz, 0.6 amps. Overcurrent protection for this circuit must comply with Article
760 of the National Electrical Code (NEC) and/or local codes. Use #14 AWG or larger wire with 600 volt
rating.
Battery Power
Observe polarity when connecting battery. Connect battery cable to J9 on the main board using the plug-
in connector provided. See Appendix A for calculation of correct battery rating.
CAUTION: Batteries contain sulfuric acid which can cause severe burns to the skin and
eyes, and can destroy fabrics. If contact is made with sulfuric acid, immediately flush skin
or eyes with water for 15 minutes and seek immediate medical attention.
Voltmeter/Ammeter
To monitor battery voltage and battery charging current, a 4XMMF is required. To install the power meter
module, remove the jumper labeled "AMP" and connect cable assembly P2 to pin connector J2 and cable
assembly P3 to pin connector J3 on the main board. Secure the 4XMMF to the backbox with the two screws
provided. On some models, it will be necessary to install the meter bracket with the nuts and bolts provided.
Figure 3.5-2: Diagram of the 4XMMF Voltmeter Connected to the Main Board
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J2
J9
J3
MS-4424 15153:F1 06/18/97
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