Hitachi RWM-(H)FSN3E, Руководство по обслуживанию

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8 Commissioning
SMGB0070 rev. 1 - 08/2011
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When installation is complete, perform commissioning according to the following procedure, and hand over the system to
the customer. Perform the commissioning of the units methodically, and check that the electrical wiring and the piping are
connected correctly.
Indoor and outdoor unit must be configured by the installer to get the prefect setting and the unit working.
8.1 Preliminary check
8.1.1 Checking the unit
• Check external appearance of the unit to look for any damage due to transportation or installation
•
Does installation space carry out Hitachi installations (see Unit spaces in outdoor and indoor manual)
8.1.2 Electrical checking
D A N G E R
Do not operate the system until all the check points have been cleared:
• Check to ensure that the electrical resistance is more than 1 MΩ, by measuring the resistance between ground
and electrical parts terminal. If not, do not operate the system until the electrical leakage is found and repaired.
Do not impress the voltage on the terminals for transmission (1 and 2, 3 and 4).
• Check to ensure that the switch on the main power source has been ON for more than 12 hours, in order to give
the oil heater time to warm the compressor.
• In three-phase unit check phase sequence connection on terminal board.
• Check the power supply voltage (±10% of the rated voltage).
• Check that field-supplied electrical components (main switches, breakers, wires, conduit connectors and wire
terminals) have been properly selected according to the electrical specifications given in the unit’s Technical
Catalogue, and check that the components comply with national and local standards.
• Do not touch any electrical components for more than three minutes after turning OFF the main switch
• Check the dip switch settings of the indoor unit and the outdoor unit are connected as shown in the corres
-
ponding chapter.
• Check to ensure the electrical wiring of the indoor unit and the outdoor unit are connected as shown in the
chapter.
• Check to ensure the external wiring is correctly fixed. To avoid problems with vibrations, noises and cut out
wires with the plates.
8.1.3 Hydraulic circuit checking
• Check that the circuit has been properly flushed and filled with water and that the installation has been drained: the
pressure of the heating circuit must be 1.8 bar (at least 1.5 bar)
• Check for any leakage in water cycle
• Make sure the system’s internal water volume is correct (see Technical catalogue)
• Check that the hydraulic circuit’s valves are open.
D A N G E R
Operating the system with closed valves will damage the unit.
• Make sure the water supply pressure is lower than 6 bar.
• Check to see that air purge valve is open.
N O T E
During filling, the air in the circuit may not be able to be removed. Additional air purge in the installation should
be installed.
• Check to see that electrical heater is completely filled with water by operating pressure of safety valve.