Checks Prior To The Test Run; Check Points; Check Procedure - Hitachi RCI-1.0FSR Service Manual

6 Commissioning

Checks prior to the test run

6.1 Checks prior to the test run
• Once installation is complete, carry out the test run in line with the procedure described below. The system can be
handed over to the client once the test has been correctly completed.
• Prior instructions to carry out the test run:
1 Verify the check points described in Check points.
2 Carry out the check procedure described in Check procedure.
3 Carry out the test run on the indoor units individually and in order.
4 Check that the wiring and refrigerant piping connections are connect.
5 Start the indoor units individually and in order. Check that they are correctly numbered.
6 Carry out the test in line with the instructions given in section Test procedure using the remote control.
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C A U T I O N
• Bear the following in mind while the system is running:
- Do not touch any component in the discharge gas area. The compressor chamber and the piping are at temperatures of over
90ºC. They may cause burns.
- Do not touch the magnetic breakers. This could cause a serious accident.
• Wait for more than three minutes before touching electrical components after turning off the main switch.
• Check that the gas and liquid line stop valves are fully open.

6.1.1 Check points

• Do not start the system until all of the check points have been verified.
1 Use a multimeter to measure the resistance between earth and the electrical component terminal. Check that the
resistance is above 1 MΩ. Otherwise, do not start the system, locate the electrical leak and repair. Do not apply
voltage to transmission terminals 1 and 2.
2 Check that the outdoor unit stop valves are fully open. If so, start the system.
3 Check that the power supply switch has been on for over 12 hours to heat up the compressor oil.

6.1.2 Check procedure

Check:
1 The gas and liquid line stop valves are fully open.
2 That there are no refrigerant leaks.
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N O T E
Flare nuts may sometimes loosen due to vibrations during transportation.
3 Refrigerant piping and wiring form part of the same system.
4 The setting of the DIP switches on the printed circuit board of the indoor units is correct. Pay particular attention to
the set different in height between the indoor and outdoor units. See the wiring diagrams for further details.
5 The power supply switch has been on for over 12 hours to heat up the compressor oil.
6 The wiring is correctly connected. See the wiring diagrams for further details.
7 Each terminal (L1, L2, L3, N or L1 and N) is correctly connected to the power supply.
8 The field-supplied electric components (main power switch protection fuse, circuit breaker without fuse, residual
current breaker, wires, piping connectors and wire terminals) have been selected correctly in line with the electrical
data given in the technical catalogue and in national and local regulations.
9 The power supply wiring terminal connection (L1 to L1 and N to N). Check the connection of the terminal boards
running at 380 Vac. An incorrect connection may damage components.
10 Intermediate wire terminals between the indoor unit (operational line: terminals of every terminal board for 12 V) fit
correctly. An incorrect connection may damage components.
11 The crankcase checker has been on for more than four hours. The device will not work unless it has been on for
more than four hours.
176 SMGB0137 rev.0 - 05/2021