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8-2. CHECK POINTS FOR TEST RUN
8-2-1. Procedures before test run
(1) Before a test run, make sure that the following work is completed.
• Installation related :
Make sure that the panel of cassette type and electrical wiring are done.
Otherwise electrical functions like auto vane will not operate normally.
• Piping related :
Perform leakage test of refrigerant and drain piping.
Make sure that all joints are perfectly insulated.
Check stop valves on both liquid and gas side for full open.
• Electrical wiring related :
Check ground wire, transmission cable, remote controller cable, and power supply cable for secure connection.
Make sure that all switch settings of address or adjustments for special specification systems are correctly settled.
(2) Safety check :
With the insulation tester of 500V, inspect the insulation resistance.
Do not touch the transmission cable and remote controller cable with the tester.
The resistance should be over 1.0 M". Do not proceed inspection if the resistance is under 1.0 M".
Inspect between the outdoor unit power supply terminal block and ground first, metallic parts like refrigerant pipes or the
electrical box next, then inspect all electrical wiring of outdoor unit, indoor unit, and all linked equipment .
(3) Before operation:
Turn the power supply switch of the outdoor unit to on for compressor protection. For a test run, wait at least 12 hours
from this point.
(4) More than 12 hours later from power supply to the outdoor unit, turn all power switch to on for the test run.
Perform test run according to the “Operation procedure” table of the bottom of this page.
While test running, make test run reports .
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