Table of Contents
Advertisement
Service and Maintenance
Figure 88. Pressure curve — 75 tons high efficiency
500
450
400
350
300
250
200
90
100
110
Note: Full load acceptable subcooling range: 13-23°F
Figure 89. Pressure curve — 75 tons eFlex variable speed
75T eFlex Variable Speed - circuit 1 only
(Use 75T Standard Capacity for circuit 2)
550
500
450
400
350
300
250
90
100
110
Note: Full load acceptable subcooling range: 13-23°F
Compressor Oil
Refer to
Table 69, p. 126
for the appropriate scroll
compressor oil charge. Remove and measure oil from any
compressor replaced. Adjust oil in replacement
compressor to prevent excessive oil in system. Anytime a
compressor is replaced, the oil for each compressor within
the manifold must be replaced.
The scroll compressor uses Trane OIL00079 (one quart
container) or OIL00080 (one gallon container) without
124
75T High Efficiency
120
130
140
150
Suction Pressure, PSIG
120
130
140
150
Suction Pressure, PSIG
105 F Ambient
95 F Ambient
85 F Ambient
75 F Ambient
65 F Ambient
160
170
180
105 F Ambient
95 F Ambient
85 F Ambient
75 F Ambient
65 F Ambient
160
170
180
substitution. Discoloration of the oil indicates that an
abnormal condition has occurred. If the oil is dark and
smells burnt, it has overheated because of the following:
•
Compressor operating at extremely high condensing
temperatures
•
High superheat
•
A compressor mechanical failure
•
Occurrence of a motor burnout.
RT-SVX063G-EN
Advertisement
Table of Contents
