Alco Cartridge-style Low Pressure Control
Cut Out Pressures
Apply data from compressors 1 and 2 for a
2-compressor rack; data from compressors
1 through 3 for a 3-compressor rack; and so on.
Note:
These Alco Low Pressure Controls
have a fixed 10 psig differential.
September 1, 1997
P/N 401789
7 - 3
HUSSM ANN CORPORATION • BRIDGETON, M O 63044-2483 • Printed in USA
R-404A/R507
Design
Compressor Capacity
Suction Largest
to
Smallest
Temp
1
2
3
4
5
6
ÞF
psig
-33
5
6
7
8
9
10
-30
6
7
8
9
10
11
-28
8
9
10
11
12
13
-25
10
11
12
13
14
15
-23
11
12
13
14
15
16
-21
12
13
14
15
16
17
-20
13
14
15
16
17
18
-16
15
16
17
18
19
20
-15
16
17
18
19
20
21
-10
20
21
22
23
24
25
7
35
36
37
38
39
40
10
38
39
40
41
42
43
12
40
41
42
43
44
45
14
43
44
45
46
47
48
15
44
45
46
47
48
49
16
45
46
47
48
49
50
20
50
51
52
53
54
55
23
53
54
55
56
57
58
25
56
57
58
59
60
61
R22
Design
Compressor Capacity
Suction Largest
to
Smallest
Temp
1
2
3
4
5
6
ÞF
psig
-33
5
6
7
8
9
10
-30
5
6
7
8
9
10
-28
5
6
7
8
9
10
-25
5
6
7
8
9
10
-23
5
6
7
8
9
10
-21
6
7
8
9
10
11
-20
7
8
9
10
11
12
-16
9
10
11
12
13
14
-15
10
11
12
13
14
15
-10
12
13
14
15
16
17
7
25
26
27
28
29
30
10
28
29
30
31
32
33
12
30
31
32
33
34
35
14
32
33
34
35
36
37
15
33
34
35
36
37
38
16
34
35
36
37
38
39
20
38
39
40
41
42
43
23
40
41
42
43
44
45
25
42
43
44
45
46
47
30
50
51
52
53
54
55
35
56
57
58
59
60
61
40
64
65
66
67
68
69
45
71
72
73
74
75
76
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