39
Measure the superheat at the compressor suction line at least 6 inches (152 mm) away from the com
-
pressor. Compare suction pressure and temperature reading between the dap4 and the manifolds. If
the difference between the manifold reading and dap4 reading is more than 5%, check for the EEV wir
-
ing and any possible alarms on dap4, or EEV driver. Measure sub-cooling at the liquid line.
When charging is complete, add the correct amount of oil, if the line run exceeds longer than 20m or
66ft. This procedure must be conducted with the system running at high load (compressor at full speed).
ALWAYS use original Danfoss POE oil 160SZ from new cans.
Oil addition is calculated based on refrigerant charge, shown in the table below:
Additional Oil Required (oz)
Note: Additional oil is only needed if pipe run is longer than 20m or 66ft.
Total Refrigerant Weight
(lbs.)
Danfoss Variable Speed
Compressor
Danfoss Fixed Speed
Compressor
20
12
6
30
18
9
40
25
12
50
31
15
60
37
18
70
43
21
80
49
25
90
55
28
100
61
31
110
67
34
120
74
37
130
80
40
140
86
43
150
92
46
160
98
49
170
104
52
180
110
55
190
117
58
200
123
61
210
129
64
220
135
67
230
141
71
240
147
74
250
153
77
Содержание gForce Ultra
Страница 1: ......
Страница 58: ...58 8 CONTROLS Refer to dap4 IOM for controls and control logic...
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Страница 64: ...gFUltra_IOM 09 2020...