TM 10-6640-216-13&P
2-12. OPERATING PROCEDURES - continued.
(b)
(c)
(d)
(e)
(f)
(g)
(h)
(i)
(j)
(k)
Place VAC-AIR switch on.
Observe manometer pressure scale. Manometer should indicate 0 psi. If
pressure greater than 0 psi, turn manometer pressure regulator valve to
left until 0 psi is indicated.
Remove plug from gage connector.
Secure RVP gage to gage connector.
Adjust manometer pressure regulator valve, as indicated on manometer, to
level specified in ASTM Test Method D-323.
If RVP gage reading differs from manometer reading by 1 percent or less,
RVP gage is accurate i.e. gage correction factor must not be greater than
0.05 psi for 0 to 5 psi gage or 0.15 psi for 0-15 psi gage.
If reading differs more than 1 percent, gage is considered inaccurate and
must not be used.
Reduce air pressure to 0 psi by adjusting manometer pressure regulator.
Place VAC-AIR switch off.
Remove RVP gage and install plug in gage connector.
(3)
Vacuum System Operation.
(a)
Open door of cabinet No. 9.
(b)
Place VAC-AIR switch on.
(c)
Observe air vacuum gage on pump and adjust vacuum level as specified by
applicable ASTM Test Method. If vacuum is less than desired, turn knob on
pump vacuum regulator to the right to increase vacuum; left to decrease
vacuum.
(d)
Open and close vacuum stopcock as needed.
d.
B/2 Anti-Icing Additive Test Kit Operation. The kit is portable and self-contained. It
consists of the carrying case, refractometer, a separatory funnel, support base with rod and
ring, aluminum dishes, piston pipets, a graduated cylinder and a bottle with screw cap. Set up
and operate kit as follows:
(1)
Using a clean, dry container, procure a 1-pint (0.4731) sample of fuel to be
tested.
(2)
Set up the separatory funnel with its support base, rod and ring (see Figure
2-16, Detail A).
(3)
Fill an aluminum dish one half full of water.
2-43
