Air Handlers
20
5.2 Trial Run
5.2.1 Preparative for Trial Run
(1) Never power on the unit until all the installation work has been done.
(2) All the control circuit and wiring has been connected correctly and soundly. Valves
on the gas and liquid line should be completely open.
(3) All the scattered objects should be removed, especially metal filing, thrum and
clip.
(4) Check if the unit appearance and piping system has been damaged during
transportation or handling.
(5) Check if the terminals are loose and the phases are correct.
5.2.2 Trial Run
(1) Trial run can be operated by professional personnel only after above items have
been checked (items to be checked as per actual condition).
(2) Power on the unit and press ON/OFF button to activate.
(3) After compressor starting up, please immediately stop the unit when abnormal
sound emits.
(4) Trial run under several modes and check if the unit operates normally.
