Hitachi UTOPIA RASC Series Installation And Operation Manual page 41

INSTALLATION OF
REMOTE CONTROLLER
14. INSTALLATION OF REMOTE CONTROLLER
14.1. INSTALLATION OF REMOTE CONTROL SWITCH <PC-ART>
PC-ART
15. TEST RUNNING
When installation is completed, perform test run according to the following procedure, and hand over the system to the customer.
Perform test run regarding indoor units one by one in order, and confirm that the electrical wiring and the refrigerant piping are
correctly connected.
Test run should be performed according to the "Test Run Procedure" on next page.

WARNING:
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 the terminal of the electrical parts. 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.
Check to ensure that the stop valves of the RASC unit
−
are fully opened, and then start the system.
Check to ensure that the switch on the main power
−
source has been ON for more than 12 hours, to warm
the compressor oil by the oil heater
Pay attention to the following items while the system is
running:
Do not touch any of the parts by hand at the discharge
−
gas side, since the compressor chamber and the pipes
at the discharge side are heated higher than 90°C.
DO NOT PUSH THE BUTTON OF THE MAGNETIC
−
SWITCH(ES), it will cause a serious accident.
Do not touch any electrical components for more than
−
three minutes after turning OFF the main switch
Confirm that the gas line stop valve and the liquid line
−
stop valve are fully open.
Confirm that the leakage of the refrigerant does not
−
exist. The flare nuts are sometimes loosened by
vibration during transportation.
Check that the refrigerant piping and the electrical
−
wiring conform to the same system.
Confirm that the dip switch setting on the printed
−
circuit board of the indoor units and the RASC units
are correct.
Check whether or not the electrical wiring of the indoor
−
units and the RASC units are connected as shown in
the chapter ELECTRICAL WIRING".
All data related to Installation about Remote Control Switch for PC-ART are in the specific
Installation Manual. Please refer to Installation Manual PMML0177A

CAUTION:
Confirm that field-supplied electrical components (main
switch fuse, fuse-free breaker, earth leakage breakers,
wires, conduit connectors and wire terminals) have been
properly selected according to the electrical data given in
the Technical Catalog of the unit and ensure that the com-
ponents comply with national and local codes.
PMML0140A rev.1 - 07/2009
41