40
30
10
20
0
10
-10
-30
0
10
20
30
(LOW )
(BLUE HOSE)
(LOW PORT)
(RED HOSE)
(HIGH PORT)
(YELLOW HOSE)
(HIGH)
(LOW )
50
60
40
70
20
30
80
30
10
90
20
35
0
100
110
10
-10
-30
-60
120
0
-60
10
20
250
30
VAC
50
60
70
20
30
80
90
35
100
110
120
250
REF
(HIGH)
(VACUUM PUMP)
(REFRIGERANT TANK)
(SCALE PLATFORM)
(KEYPAD)
(VACUUM GAUGE)
500
400
600
300
200
100
800
0
900
1800
(Figure 1)
700