Figure 2-17. Reduced conversion cycle

TM 5-3655-210-12

Figure 2-17 .

Reduced conversion cycle .

2-8. Transfer of Liquid from the Conversion

b. Set the valves as indicated in Figure 2-16 and

Pressure Vessel to the Storage Pressure

start the driving unit. Refer to Table 2-1 for valve

Vessel

identification.

c. Close valves 1, 3, 5, and 10 (fig. 2-16). Open

a. Set the driving unit for manual operation as

valve 4. Open valves 2 and 10. When liquid carbon

follows: Make certain the motor starting switch (fig. 2-

dioxide appears at valve 10, close the valve and engage

9) and the reversing switch are in the OFF position; and

the clutch to the transfer pump.

the power line connected to the trailer. Disengage all

d. Continue to operate the transfer pump until the

countershaft shifters (1, 2, and 3, fig. 2-3). Turn the

conversion pressure vessel is empty, as indicated by the

motor starting switch (fig. 2-9) to the HAND position.

liquid level gage (2, fig. 2-4).

Turn the reversing switch to one of the ON positions

e. Disengage the transfer pump clutch and close

only long enough to observe the rotation of electric

valves 2 and 10.

motor shaft. The shaft should turn counterclockwise

f. Set the unit for automatic operation, and engage

when viewed from the shaft end of the motor. If the

only the refrigeration clutch (3, fig. 2-3). With all the

shaft rotates in the proper direction, return the motor

liquid contained in the storage pressure vessel, the

starting switch to the OFF position, turn the reversing

valves should be in the normal position as indicated in

switch to the proper ON position. The electric motor can

Figure 2-13.

now be manually operated when the motor starting

switch is turned to the HAND position. To stop the

2-9. Filling Both Pressure Vessels With Liquid

electric motor, throw the motor starting switch and the

Carbon Dioxide

reversing switch to the OFF position. Then' disengage

a. Set the driving unit for manual operation and

all clutches (1, 2, and 3, fig. 2-3).

disengage all clutches as follows: The tractor-trailer

2-16