TM 10-6640-216-13&P
2-12. OPERATING PROCEDURES - continued.
(g)
Slowly open sink faucet to remove entrapped air from water system. Close
faucet.
(h)
Slowly open tank fill gate valve to full open position while checking for
leaks in water system piping.
(i)
Observe the water level gage on side of tank; when tank is full; close tank
fill gate valve.
(j)
Turn off water supply at source.
(k)
Remove garden hose from water supply source and FILL connector. Drain
and store hose in overpack box.
(l)
Close and latch utilities box access door.
(3)
Operate the Water System Using Laboratory Water Tank.
CAUTION
Keep water tank level at least 1/4 full to ensure fail-free operation of
water system.
NOTE
While using the laboratory water tank as the primary water supply
source, monitor the water consumption by observing the water level gage
mounted on side of water reservoir inside cabinet No. 4.
(a)
Verify that the suction/pump gate valve (Figure 2-14) is closed.
(b)
Open suction/tank gate valve.
(c)
Place pump switch in the on position. Pump should run until water
pressure reaches cutoff point (20 psi).
(d)
Open sink faucet to purge air from the system. Pump will start when water
pressure drops to the starting point (10 psi).
(e)
When a solid stream of water is flowing from the faucet, close faucet and
check system for leaks.
(4)
Operate the Water System Directly from Unpressurized Source.
(a)
Unlatch and open utilities box access door.
(b)
Secure 50-foot (15.25 m) garden hose to connector marked SUCTION in
utilities box.
(c)
Secure opposite end of hose to unpressurized water source and open water
source outlet gate valve.
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