| If the combination moisture indicator and sight glass indicates an accumulation of moisture within the system, which of the listed procedures would be the most practical to follow? |
| A) Secure the system, disassemble and de-ice the thermostatic expansion valve. |
| B) Using a vacuum pump, draw the entire system down to 1,270 microns for a period of three hours. |
| C) Close the king valve, pump down the system, isolate the drier, remove the desiccant core and replace with new drier cartridge. |
| D) Purge the entire system to the atmosphere, replace the drier cartridge, and recharge the system with refrigerant. |
