REMOVAL - TM-55-1905-223-24-170266

TM 55-1905-223-24-17

(b) Connect the high pressure gauge (3, FIGURE 4-16) hoseline (5) to the gauge port

connection on the compressor discharge valve (1, FIGURE 4-17).

FIGURE 4-18) on a portable vacuum pump (8).

(d) Connect the discharge line.(7) of the vacuum pump to an empty R-22 refrigerant

container (6). Make sure hand-wheel, gauge port, valves (1, 3) are closed by

turning fully clockwise.

(2)

Remove cap (10) from suction valve and cap (4) from discharge valve for access to

valve stems.

(3)

Close both suction and discharge valves by turning valve stems fully clockwise. This

will isolate the compressor from the rest of the system.

(4)

Slowly open the handwheel gauge port valves (1, 3) counterclockwise 1/2 to 1 turn.

This will allow the refrigerant to escape from the compressor and through the gauge

manifold.

(5)

Open the valve (5) on the empty container (6) by turning counterclockwise.

(6)

Start and run the portable vacuum pump (8).

(7)

While the vacuum pump is running, watch the pressure on the combination gauge (2).

When pressure has dropped to 1 or 2 psig on gauge (2), close hand wheel gauge port

valves (1, 3) and stop the vacuum pump. This will leave a slight positive charge on the

compressor.

(8)

If gauge pressure increases rapidly, repeat steps a.(5) through (8) above until 1 or 2

psig is maintained on combination gauge (2).

(9)

Close valve (5) on container (6) by turning fully clockwise.

WARNING

Purge hoselines before disconnecting. Residual freon in lines can cause personal

injury.

(10) Disconnect all manifold gauge hoselines (5, 6, 7, FIGURE 4-16).

WARNING

Purge hoselines before disconnecting. Residual freon in lines can cause personal

injury.

(11) Disconnect vacuum pump discharge line (7, FIGURE 4-18) from container (6).

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