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Operating Instructions cont'd - TM-5-6640-213-140034
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TM-5-6640-213-14 Laboratory Air Mobile Aviation Fuel NSN
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Tank
TM 5-6640-213-14
(a) Connect a length of garden hose from
the outlet side of the water connection box (18, fig. 1-4) for use as
a drain.
Close the sink faucet.
(b)
Close the inlet gate valve.
(c)
Close the tank gate valve (16,
(d)
(e)
Open the air bleed valve on the water
tank sight gage.
(f)  Start the pump using the ON-OFF switch
located in a wire mold above and to the left of the sink.
(g) SlOWlY open the sink faucet and allow
the pumped water to force air from the system.
(h) Check the pressure switch to make sure
that the water pump stops operation when the sink faucet is closed
and starts operating when the sink faucet is open.  In the event the
pump fails to respond when the faucet is opened or closed, rotate the
adjustment screw on top of the switch to raise or lower the cutoff
pressure accordingly.
NOTE
To prolong the life of the water pump, make it a
standard practice to place the ON-OFF switch in
OFF position when the water system is not in use.
(3) Utility Equipment and Air System.
(a) Description.
Principal components of the air
system are discussed below.
1.  Pump.  The vacuum-pressure, rotary-type,
power-driven pump is a unit designed to produce a vacuum of 27 inches
(68.6 cm) of mercury (Hg) to meet the macuum filtration requirements
of the laboratory and to produce a pressure of 25 psi (1.76 kg/sq cm)
maximum to meet the Reid vapor pressure (RVP) gage calibration require-
ments of the laboratory.  The pump is located on the bottom of cabinet
(No. 12) on the left-hand side of the laboratory next to the sink cabi-
net and in front of an air surge tank to which the positive pressure
outlet is connected.  Pump data are as follows:
Motor:
General Electric "Form G" Split
phase, 115V, 60 Hz, ac
Vacuum down to 27 in. (68.6 cm)
Pump:
of Hg. Pressure up to 25 psi
(1.76 kg/sq cm)
. . . . . . . . . . . . . . . . . . . . . . . 15 in. long; 8 in. wide, 8-1/2
Dimensions:
in. high," overall (38.1 cm long,
20.3 cm wide, 21.6 cm high)
2-11

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