TUBING AND FITTING S.
This task covers:
Tool kit, service, refrigeration unit
Power off at power source.
All panels and doors on unit removed. See paras 4-17 and 4-19.
General Safety Instructions:
Disconnect input power to the air conditioner before performing any internal
maintenance. Voltages used can kill. Shutting the unit off at the control panel
does not disconnect unit power.
The refrigeration system contains a number of pieces of copper tubing in a variety of
material grades, sizes, lengths, and shapes; and a number of elbows, tees, and
adapters in several sizes. Observe the following when replacing any piece of tubing or
any fitting in the system.
(1) Check tubing and fittings for signs of leakage. If leakage is suspected, perform a leak test. See para 5-8.
(2) Check that tubing is not kinked or mashed closed.
(3) Install all panels and doors. See paras 4-17 and 4-19.