Air Purge; Using The Vacuum Pump - Carrier 53P100C Owners And Installation Manual

AIR PURGE

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1) Using the vacuum pump

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For air purge, evacuate the air in the connecting pipe and indoor unit by using vacuum pump. For details, please refer to the following procedure.
a. Connect the gauge manifold.
b. Open the low pressure valve and close the high pressure valve of the gauge manifold completely.
c. Operate the vacuum pump during at least 20 minutes until the pressure reaches -101Kpa (-760mm Hg).
d. Close the low pressure valve of the gauge manifold and stop the vacuum pump operation. (If the indicator of gauge manifold is returned
within 1-2minute after stopping the vacuum pump, check the piping connection leakage)
e. Open both the two-way and three-way valve completely.
f. Close both the two-way and three-way valve caps completely.
g. Remove the gauge manifold and vacuum pump.(During the disconnection, please be cautious not to lose any refrigerant and oil)
h. Reinstall the valve caps and service port nuts.
Hex key wrench
Valve cap
Service port nut
Valve core
CAUTION
Refrigerant charging
• In case of refrigerant charging due to refrigerant leak or service refer to the table 1.(page.35)
• Please do not install over 10m between indoor and outdoor unit for 53P100C/H
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low - pressure valve
high - pressure valve
gauge manifold
Valve cap
vacuum pump
Figure 16
2004.3.30, 6:35 PM