Ps-855b Maintenance Manual [FAST]
This unit is a member of a broader product family, which includes the PS-855A, PS-855C, and PS-855D models, each with specific output characteristics. The PS-855B is specifically defined as a "Power Supply, 5.0 AMP, 5 VDC Output". Its official part number is , and it is also listed under National Stock Numbers (NSN) 6130-01-541-4948 and 6130-01-482-8530 .
Utilize approved safety glasses, gloves, and protective clothing.
The unit must be recharged within 2 hours after discharge to prevent permanent damage to the battery cells. 3. Component Maintenance Manual (CMM) Structure
Relieve hydraulic pressure before disconnecting any lines.
Connect the DMM directly across the power supply terminals (creating a safe short circuit managed by the current limiter). ps-855b maintenance manual
The L3Harris PS-855B is a sophisticated and reliable piece of safety equipment. However, its reliability is entirely dependent on proper maintenance. The L3Harris PS-855B maintenance manual is the definitive source for that maintenance. It contains the knowledge—from detailed test procedures to safety warnings—that keeps this silent sentinel ready to act.
Check internal screw terminals and structural mounting hardware for loosening caused by operational vibrations. 3. Detailed Component Inspections and Calibration
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Power on the PS-855B and allow it to idle for 15 minutes to reach thermal equilibrium. This unit is a member of a broader
Grand Rapids, MI 49512-9704, USA July 30, 2014. [Link] Foreword. This manual provides information intended for use by persons who, PS-850/PS-855 Component Manual | PDF - Scribd
: Revision B (dated July 30, 2014) is a widely cited version. ATA Chapter : Typically found under ATA 24-30-08 .
The PS-855B is engineered for high-performance efficiency. However, its complex hydraulic and mechanical systems require strict adherence to maintenance schedules outlined in the official documentation. The manual is divided into several key sections, covering everything from initial installation to advanced troubleshooting. Hydraulic System Components Electrical Control Units Mechanical Assembly and Bearings Safety Guards and Interlocks 2. Safety Precautions and Protocols
Comprehensive Maintenance Manual & Guide for the PS-855B Proper maintenance of the PS-855B unit ensures operational safety, peak performance, and equipment longevity. This comprehensive guide outlines standard preventative procedures, troubleshooting steps, and component care for technicians and system operators. 1. Safety Protocols and Pre-Maintenance Requirements Fairchild KA3842 PWM)
Clear dust buildup from aluminum heat sink fins using low-pressure compressed air (less than 30 PSI).
If an original component is obsolete (e.g., Fairchild KA3842 PWM), the manual may list direct substitutes (e.g., TI UC3842). Always check the “Alternative Parts” addendum.
: A brief functional test recommended before each flight to ensure the unit is operational. Capacitance Testing
The PS-855B maintenance manual is the same as a user manual. Look for:
Proper techniques to open and service the unit.