(Ref. Fig. 501/TASK 38-31-00-991-017) R **ON A/C 106-149, 301-399, 401-499,
 (Ref. Fig. 501A/TASK 38-31-00-991-017-A)
 **ON A/C 001-049, 051-051, 056-056,

 Subtask 38-31-00-710-053
 A. Do this test. NOTE : Make sure that the access panel 172AR is closed or the limit
____ switch 44MG is pushed and hold in during the test.
 -------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
1. On the altitude pressure switch
 43MG:
 - set the altitude to 15250 ft.
 (4648.11 m).
 2. In all lavatories:  In the vacuum toilet system:
 - push each flush switch 51MG  - the vacuum generator 37MG starts to
 with a time delay of 15 +3 -3  operate.
 s.  - approx. 0.2 l (0.05 USgal) of water
 flows into the toilet bowl.
 - air flows out of the ventilation port
 of the vacuum generator.
 - the toilet flush valve opens and the
 suction removes the water.
 3. In two lavatories:  In the vacuum toilet system:

 Flush Cycle Schmatic R Figure 501/TASK 38-31-00-991-017
R 1EFF : 001-049, 051-099, 101-105, 151-199, 1 38-31-00Page 506 1201-299, 1May 01/05 1 1 1CES 1

 Flush Cycle Schmatic
 Figure 501A/TASK 38-31-00-991-017-A

R 1EFF : 106-149, 301-399, 401-499, 1 38-31-00Page 507 1 1 Aug 01/05 1 1 1CES 1

 -------------------------------------------------------------------------------
ACTION RESULT -------------------------------------------------------------------------------
-push the flush switches 51MG within 15 s.
-within 10 s after the flush cycle starts, push the flush switch 51MG in the same and/or a different lavatory again.
4. On the altitude pressure switch 43MG:
 -set the altitude to 16000 +700-700 ft. (4876.71 +213.35 -
213.35 m).
 5. In one lavatory:
-push the flush switch 51MG.
6. On the altitude pressure switch 43MG:
 -set the altitude to 12000 ft. (3657.53 m).
 7. In a different lavatory:
-push the flush switch 51MG.
-the vacuum generator 37MG starts tooperate.
 -approx. 0.2 l (0.05 USgal) of water flows into one toilet bowl.
 -air flows out of the ventilation port of the vacuum generator.
 -
the toilet flush valve (of the same toilet) opens and the suction removes the water.

-
the vacuum generator continues tooperate (first flush cycle notfinished).

-a second or additional flush cycle does not start.
 -the next flush cycle sequence is prevented for approx. 15 s after the first flush cycle starts.
In the vacuum toilet system:
-the vacuum generator 37MG will not operate.
 -approx. 0.2 l (0.05 USgal) of water flows into the toilet bowl.
 -the toilet flush valve opens and the water drains out of the toilet bowl.
In the vacuum toilet system:
-the vacuum generator 37MG starts to operate.
 -approx. 0.2 l (0.05 USgal) of water flows into the toilet bowl.
R 1EFF : 001-049, 051-051, 056-056, 1 38-31-00Page 508 1 1 May 01/05 1 1 1CES 1

 -------------------------------------------------------------------------------
ACTION RESULT -------------------------------------------------------------------------------
-air flows out of the ventilation port of the vacuum generator.
 -the toilet flush valve opens and the suction removes the water.

R **ON A/C 052-055,
R Subtask 38-31-00-710-053-B
R A. Do this test.
R NOTE : Make sure that the access panel 172AR is closed or the limit
____ R switch 44MG is pushed and hold in during the test.
R -------------------------------------------------------------------------------R ACTION RESULT R -------------------------------------------------------------------------------
R 1. On the altitude pressure switch
R 43MG:
R - set the altitude to 17250 ft.
R (5257.70 m).

R 2. In all lavatories:
R - push each flush switch 51MG
R with a time delay of 15 +3 -3
R s.
R
R
R
R
R

R 3. In two lavatories:
R - push the flush switches 51MG at
R the same time.
R
R
R
R
R
R
R

In the vacuum toilet system:
-the vacuum generator 37MG starts to operate.
-approx. 0.2 l (0.05 USgal) of water flows into the toilet bowl.
-air flows out of the ventilation port of the vacuum generator.
-
the toilet flush valve opens and the suction removes the water.

In the vacuum toilet system:
　
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