Figure 4-17. Removal and installation of sight glass
d. Removal. (See figure 4-18.)
(1) Refer to figure 4-18 and install the evaporator coil in the unit.
(2) Perform any further maintenance of refrigeration components required.
(3) If no further maintenance of refrigeration components is required, refer to paragraph 4-8 and purge the
(4) Refer to paragraph 4-4c and check the evaporator coil and the dehydrator for refrigerant leaks. Refer to
paragraph 4-4d and repair any leaks found.
(5) Refer to figure 4-4 and evacuate the refrigerant system.
(6) Refer to paragraph 4-10 and charge the system with refrigerant.
(7) Re-perform the test procedure of paragraph a to check for refrigerant leakage.