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Malfunction 2. Ventilation Air Fan Does Not Operate in Auto Mode cont'd - TM-9-4520-271-140117
Malfunction 3. Combustion Air Fan Does Not Operate in Manual Mode cont'd - TM-9-4520-271-140120

TM-9-4520-271-14 Improved Army Space Heater (IASH) Electric Powered Multi-fuel 140 000 BTU Model H-140 Manual
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TM 9-4520-271-14
0012 00
INITIAL SETUP:
Test Equipment
References  Continued
Multimeter (item 1, WP 0058 00)
WP 0028 00
WP 0033 00
WP 0049 00, table 1
Tools and Special Tools
FM 4-25.11
None
Materials/Parts
Personnel Required
None
One
Equipment Condition
References
None
WP 0005 00
WP 0026 00
WARNING
Heat exchanger overheating may damage the ASH and under some conditions a safety hazard may result.
An overheat shutdown occurs when the combustion air and ventilation air fan assemblies are turned off at
the same time when in the heating modes. Always set the control panel MODE SWITCH to the VENT
position for at least 2 minutes when shutting down the ASH from the heating modes.
FOR ARTIFICIAL RESPIRATION, REFER TO FM 4-25.11, FIRST AID.
Electrical high voltage cannot be seen but can kill you. Electricity is unlike most other dangerous things
you can come in contact with because it gives no warning and no symptoms to be wary of. Its effect is
immediate. It can kill you, render you unconscious, or severely burn you.
To ensure your safety and that of other maintenance personnel, always observe the following precautions:
DO NOT perform any maintenance on electrical equipment unless all power is removed.
BE CERTAIN that there is someone assisting you who can remove power immediately.
TROUBLESHOOTING PROCEDURES
Continued
Malfunction 3. Combustion Air Fan Does Not Operate in Manual Mode
0012 00-15






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