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Section V. UNIT MAINTENANCE PROCEDURES
This section contains unit maintenance procedures as authorized by the Maintenance Allocation Chart (MAC)
provided in Appendix B. The maintenance procedures consist of step-by-step instructions and will be
performed by one person unless otherwise indicated in the initial setup.
Read all WARNINGS, CAUTIONS, NOTES and instructions carefully before working on the HWR. Read and
understand all the WARNINGS listed in the front of this manual.
ELECTRIC SHOCK. Do not be misled by the term "low-voltage".
Whenever possible turn off and disconnect the HWR power supply
before performing any work. Potentials as low as 30 V dc can cause
severe electric shock or death under adverse conditions.
HIGH TEMPERATURES (1). Be aware that normal operating
temperatures within the HWR are up to 190 OF (88 OC) and can reach
higher temperatures under abnormal conditions. Use gloves or other
hand protection as necessary. Unprotected exposure to high
temperatures can cause serious burn injuries.
FIRST AID. Never work on the HWR unless there is another person
present who is competent in administering first aid. The absence of
first aid can result in serious personal injury or even death. Refer to
FM 21-11 (First Aid for Soldiers) for appropriate first aid instructions.
DISASSEMBLY. Do not attempt disassembly beyond that which is
necessary for each maintenance task. Unauthorized disassembly
can result in the HWR becoming non-operational.
WORK SURFACE. Always ensure that the work surface is clean and
not obstructed. A dirty or unsafe surface can cause damage to the