System Clean Up (flushing) - continued

TM 5-4120-339-14

(x) Start the pump and flush the line for approximately 10 minutes, then turn the pump off.

(y) Remove the cap from the tubing at point 2. Disconnect the pump discharge line from the tubing at

point 4 and connect it to the tubing at point 2. Cap the tubing at point 4.

(z) Energize the pressure equalizer solenoid valve by applying 24 volts dc across pins C and F of plug

P10.

(aa) Start the pump and flush the line for approximately 10 minutes, then turn the pump off.

(ab) Remove the cap from the tubing at point 5.

(ac) Remove the pup discharge line from the tubing at point 2 and connect it to the tubing at point 5.

(ad) Remove the recovery line from the valve at point 6 and connect it to the tubing at point 2. Close the

valve at point 6.

(ae) Start the pump and flush the line for approximately 10 minutes, then turn the pump off.

(af) De-energize the pressure equalizer solenoid valve by removing the voltage source from pins C and

F of plug P10.

(ag) Disconnect the discharge and recovery lines from the tubing and remove all caps from the tubing.

(4) Refer to figure 4-19 and purge the system with nitrogen at approximately 30 psig (2.11 ks/cm2) as

follows:

(a) Make sure caps are off the tubing at all point and that valves V1 and V6 are open.

(b) Connect the nitrogen line to the tubing at point 1 and release nitrogen into the system for

approximately 5 minutes or until moisture ceases to be discharged from the system.

(d) Release nitrogen into the system for approximately 5 minutes or until moisture ceases to be

discharged from the system.

(e) Remove the nitrogen line from the tubing at point 1 and connect it to the tubing at point 2. Release

nitrogen into the system for approximately 5 minutes or until moisture ceases to be discharged from the system.

(f) De-energize the liquid line solenoid valve and release nitrogen into the system for approximately 5

minutes or until moisture ceases to be discharged from the system.

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