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  TM 10-1670-265-12&P
T.O. 13C7-1-21
4-18. ASPSU - Aline (Cont)
4-18
ALINEMENT (Cont)
3.
ASPSU alinement check (Cont).
f.
Observe altimeter and FIRE indicator (7). Place ALT. DECR. switch (8) to up position, read and record the
altitude at which the FIRE indicator lights.
The FIRE indicator should light within the following tolerances:
Dz Firing Altitude
Fire Altitude Tolerances
9,900 feet
+ 250 ft.
9,000 feet
+ 250 ft.
7,000 feet
+ 250 ft.
5,000 feet
+ 250 ft.
3,500feet
+ 150ft.
1,000 feet
+ 150 ft.
4.
ASPSU Alinement.
a.
Return ASPSU TEST switch (6) to the OFF position. Turn PUMP switch (3) to the off position.
b.
Place PRES. DUMP switch (9) to the up position to depressurize chamber. Place AC POWER switch (1) to
the OFF position.
WARNING
Always insure that the ASPSU test set is depressurized before attempting to open chamber door
as personnel injury may result.
c.
Raise the ASPSU test set pressure chamber door.
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4-38
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