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13. TEST OPERATION
Before test operation
WARNING
To protect the compressor at starting time, keep power-ON condition before 12 hours or more.
• Before turning on the power supply, carry out the following items.
1) Using 500V-megger, check there is 1MΩ or more between the terminal block of the power supply and the
earth. If 1MΩ or less is detected, do not run the unit.
2) Check that all the valves of the outdoor unit are fully opened.
• Never push the electromagnetic contactor to carry out a forced test operation.
(It is very dangerous because a protective device does not work.)
<Check list 1>
• Using the “Check list 1”, check there is no trouble in the installation work.
Is capacity of the leak Outdoor total capacity XXXX A Header unit (A) XXXX A Indoor unit XXXX A
breaker appropriate?
Follower unit (B) XXXX A
Follower unit (C) XXXX A
Follower unit (D) XXXX A
Is diameter of the power cable correct? Header unit (A) XXXX mm² Indoor unit XXXX mm²
Follower unit (B) XXXX mm²
Follower unit (C) XXXX mm²
Follower unit (D) XXXX mm²
Is control communication line correct? Indoor –outdoor connection terminals (U1, U2) XXXX
Outdoor–outdoor connection terminals (U5, U6) XXXX
Central control system connection terminals (U3, U4) XXXX
Is power of indoor units supplied collectively?
Is earth grounded?
Is insulation good? XXXX MΩ or more
Is the main power voltage good? XXXX V
Is diameter of connecting pipe correct?
Is the branch kit correct?
Is drain water of the indoor unit arranged so that it flows without accumulation?
Is thermal insulation of pipes good? (Connecting pipes, Branch kit)
Is not short-circuit of discharge air in indoor/outdoor units?
After airtight test for pipes, are vacuuming and adding of refrigerant executed?
Are valves of all the outdoor units fully opened? Gas side Liquid side Balance side
Header unit (A) XXXX XXXX XXXX
Follower unit (B) XXXX XXXX XXXX
Follower unit (C) XXXX XXXX XXXX
Follower unit (D) XXXX XXXX XXXX
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