8
coil sections. Dirt and debris may pass through first section,
become trapped between the row of fins and restrict condenser
airflow. Use a flashlight to determine if dirt or debris has collected
between coil sections. Clean coil as follows:
1. Turn off unit power.
2. Using a garden hose or other suitable equipment, flush coil
from the outside to remove dirt. Be sure to flush all dirt and
debris from drain holes in base of unit. Fan motors are wa-
terproof.
Table 1—Superhea t Charging
O U T ---
DOOR
TEMP
°F
(° C )
EVAPORATOR ENTERING AIR TEMPERATURE ° F ( ° C) WB
50
(10)
52
(11)
54
(12)
56
(13)
58
(14)
60
(16)
62
(17)
64
(18)
66
(19)
68
(20)
70
(21)
72
(22)
74
(23)
76
(24)
55
(13)
9
( --- 1 3 )
12
( --- 1 1 )
14
( --- 1 0 )
17
( --- 8 )
20
( --- 7 )
23
( --- 5 )
26
( --- 3 )
29
( --- 2 )
32
(0)
35
(2)
37
(3)
40
(4)
42
(6)
45
(7)
60
(16)
7
( --- 1 4 )
10
( --- 1 2 )
12
( --- 1 1 )
15
( --- 9 )
18
( --- 8 )
21
( --- 6 )
24
( --- 4 )
27
( --- 3 )
30
( --- 1 )
33
(1)
35
(2)
38
(3)
40
(4)
43
(6)
65
(18)
—
6
( --- 1 4 )
10
( --- 1 2 )
13
( --- 1 1 )
16
( --- 9 )
19
( --- 7 )
21
( --- 6 )
24
( --- 4 )
27
( --- 3 )
30
( --- 1 )
33
(1)
36
(2)
38
(3)
41
(5)
70
(21)
— —
7
( --- 1 4 )
10
( --- 1 2 )
13
( --- 1 1 )
16
( --- 9 )
19
( --- 7 )
21
( --- 6 )
24
( --- 4 )
27
( --- 3 )
30
( --- 1 )
33
(1)
36
(2)
39
(4)
75
(24)
— — —
6
( --- 1 4 )
9
( --- 1 3 )
12
( --- 1 1 )
15
( --- 9 )
18
( --- 8 )
21
( --- 6 )
24
( --- 4 )
28
( --- 2 )
31
( --- 1 )
34
(1)
37
(3)
80
(27)
— — — —
5
( --- 1 5 )
8
( --- 1 3 )
12
( --- 1 1 )
15
( --- 9 )
18
( --- 8 )
21
( --- 6 )
25
( --- 4 )
28
( --- 2 )
31
( --- 1 )
35
(2)
85
(29)
— — — — — —
8
( --- 1 3 )
11
( --- 1 2 )
15
( --- 9 )
19
( --- 7 )
22
( --- 6 )
26
( --- 3 )
30
( --- 1 )
33
(1)
90
(32)
— — — — — —
5
( --- 1 5 )
9
( --- 1 3 )
13
( --- 1 1 )
16
( --- 9 )
20
( --- 7 )
24
( --- 4 )
27
( --- 3 )
31
( --- 1 )
95
(36)
— — — — — — —
6
( --- 1 4 )
10
( --- 1 2 )
14
( --- 1 0 )
18
( --- 8 )
22
( --- 6 )
25
( --- 4 )
29
( --- 2 )
100
(38)
— — — — — — — —
8
( --- 1 3 )
12
( --- 1 1 )
15
( --- 9 )
20
( --- 7 )
23
( --- 5 )
27
( --- 3 )
105
(41)
— — — — — — — —
5
( --- 1 5 )
9
( --- 1 3 )
13
( --- 1 1 )
17
( --- 8 )
22
( --- 6 )
26
( --- 3 )
110
(43)
— — — — — — — — —
6
( --- 1 4 )
11
( --- 1 2 )
15
( --- 9 )
20
( --- 7 )
25
( --- 4 )
115
(47)
— — — — — — — — — —
8
( --- 1 3 )
14
( --- 1 0 )
18
( --- 8 )
23
( --- 5 )
Where a dash ( --- ) appears, do not attempt to charge system under these conditions or refrigerant slugging may occur. Charge must be weight in.
NOTE: Superheat _F(_C) is at low ---side service port.
Ta ble 2—Required Suction--Line Temperature
SUPERHEAT
TEMP(°F/°C)
SUCTION PRESSURE AT SERVICE PORT (PSIG)
107.8 112.2 116.8 121.2 126.0 130.8 138.8 140.8 145.8
0/---18 35 37 39 41 43 45 47 49 51
2/---17 37 39 41 43 45 47 49 51 53
4/---16 39 41 43 45 47 49 51 53 55
6/---14 41 43 45 47 49 51 53 55 57
8/---13 43 45 47 49 51 53 55 57 59
10/---12 45 47 49 51 53 55 57 59 61
12/---11 47 49 51 53 55 57 59 61 63
14/---10 49 51 53 55 57 59 61 63 65
16/---9 51 53 55 57 59 61 63 65 67
18/---8 53 55 57 59 61 63 65 67 69
20/---7 55 57 59 61 63 65 67 69 71
22/---6 57 59 61 63 65 67 69 71 73
24/---4 59 61 63 65 67 69 71 73 75
26/---3 61 63 65 67 69 71 73 75 77
28/---2 63 65 67 69 71 73 75 77 79
30/---1 65 67 69 71 73 75 77 79 81
32/0 67 69 71 73 75 77 79 81 83
34/1 69 71 73 75 77 79 81 83 85
36/2 71 73 75 77 79 81 83 85 87
38/3 73 75 77 79 81 83 85 87 89
40/4 75 77 79 81 83 85 87 89 91
38QRR
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