27
System Pre-Start Procedures (Continued)
If a leak is encounter, repair the system and repeat the
evacuation process until the recommended vacuum is ob-
tained.
Once the system has been evacuated, break the vacuum
with refrigerant, and complete the remaining “Pre-Start Pro-
cedures" before starting the unit.
Figure 4-1
Typical Vacuum Pump Hookup
Figure 4-2
Evacuation Time-vs-Pressure Rise
200
400
600
800
1000
1200
1400
1600
-10
0
10
20
30
40
50
60
70
80
90
TIME IN MINUTES
PRESSURE IN MICRON
S
Continuously increasing pressure
indicates the presence of leaks,
moisture or both.
State of equilibrium indicates the
true amount of moisture left in
the system. It indicates that no
leaks are present, but further
evacuation is required.
State of equilibrium indicates the
true amount of moisture left in
the system. It indicates that no
leaks are present and the
system is properly evacuated.
Initial evacuation pressure
Summary of Contents for CAUC-C20
Page 8: ...8 Figure 3 2 CAUC C20 Unit Dimensional Data Recommended Clearances...
Page 9: ...9 Figure 3 2 Continued CAUC C25 Unit Dimensional Data Recommended Clearances...
Page 10: ...10 Figure 3 2 Continued CAUC C30 Unit Dimensional Data Recommended Clearances...
Page 11: ...11 Figure 3 2 Continued CAUC C40 Unit Dimensional Data Recommended Clearances...
Page 12: ...12 Figure 3 2 Continued CAUC C50 Unit Dimensional Data Recommended Clearances...
Page 13: ...13 Figure 3 2 Continued CAUC C60 Unit Dimensional Data Recommended Clearances...
Page 24: ...24 Figure 3 7 Typical Interface Connection Diagram for CCAD 20 through 60 Ton Package Chiller...
Page 25: ...25...
Page 33: ...33 Blank...
Page 34: ...34 Figure 5 2 Typical Wiring Schematic for 20 through 60 Ton Units...
Page 35: ...35...
Page 36: ...36 Figure 5 3 Typical Control Panel Connections Diagram for 20 through 60 Ton Units...
Page 37: ...37...
Page 42: ...42...
Page 43: ...43...
Page 44: ...44...
