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HFC-R513A Temperature Pressure Chart
°F
PSIG
°F
PSIG
°F
PSIG
°F
PSIG
6
13.0
46
46.3
86
104
126
195.2
8
14.2
48
48.6
88
108
128
200.8
10
15.5
50
50.9
90
111
130
206.6
12
16.8
52
53.2
92
115
132
212.4
14
18.1
54
55.6
94
119
134
218.4
16
19.5
56
58.1
96
123
136
224.5
18
21.0
58
60.7
98
127
138
230.7
20
22.4
60
63.3
100
132
140
237.1
22
24.0
62
66.0
102
136
142
243.6
24
25.5
64
68.7
104
140
144
250.1
26
27.2
66
71.5
106
145
146
256.9
28
28.8
68
74.4
108
149
148
263.7
30
30.6
70
77.4
110
154
150
270.7
32
32.3
72
80.4
112
159
152
277.8
34
34.2
74
83.6
114
164
154
285.0
36
36.1
76
86.8
116
169
156
292.4
38
38.0
78
90.0
118
174
158
300.0
40
40.0
80
93.4
120
179
160
307.6
42
42.0
82
96.8
122
184
162
315.4
44
44.2
84
100.3
124
190
164
323.4
Routine Maintenance
Lubrication
CAUTION
Improper servicing of the lubrication system, including the addition of excessive or incorrect oil,
substitute quality oil filter, or any mishandling can damage the equipment. Only authorized
and trained service personnel should attempt this service. For qualified assistance, contact
your local Daikin service location.
After the system is once placed into operation, no other additional oil is required except in the event that repair work
becomes necessary to the oil pump, or unless a large amount of oil is lost from the system due to a leak.
If oil must be added with the system under pressure, use a hand pump with its discharge line connected to the backseat
port of the valve in the lubricant drain from the compressor to the sump. See Figure 20 on page 42. The POE oils
used with R-134a/R513A are hygoscopic and care must be exercised to avoid exposure to moisture (air).
The condition of compressor oil can be an indication of the general condition of the refrigerant circuit and compressor
wear. An annual oil check by a qualified laboratory is essential for maintaining a high level of maintenance. It is
useful to have an oil analysis at initial startup to provide a benchmark from which to compare future tests. The local
Daikin service office can recommend suitable facilities for performing these tests.
Table 14 gives the upper limits for metals and moisture in the polyolester lubricants required by Daikin chillers.