Hitachi YUTAKI M RASM-2VRE Instruction Manual page 32

COMMISSIONING

DSW7: Additional setting 4
Factory setting
Compatibility with ATW-RTU-04 (When
cooling mode operation is needed)

DSW15 & RSW2/ DSW16 & RSW1: Not used
Factory setting
(Do not change)

DSW18: Not used
Factory setting
(Do not change)

SSW1: Remote/Local
Factory setting
(Remote operation)
Local operation

SSW2: Heat/Cool
Factory setting
(Heat operation)
Cool and Heat operation in case of Local
10.5.3 LED indication
Name Colour
LED1 Green Power indication
LED2 Red Power indication
LED3 Red Heat pump operation (Thermo ON/OFF)
LED4 Yellow Alarm (flickering with 1 sec interval)
LED5 Green Not used
LED6 Yellow H-LINK transmission
LED7 Yellow H-LINK RCS transmission
20 PMML0506 rev.1 - 09/2019
Remote
Local
Remote
Local
Heat
Cool
Heat
Cool
Indication
11 COMMISSIONING
11.1 BEFORE OPERATION
!
C A U T I O N
• Supply electrical power to the system for approximately 12 hours
before start-up after a long shut-off. Do not start the system
immediately after power supply, it may cause compressor failure
because the compressor is not well-heated.
• When the system is started after a shut-off longer than approximately
3 months, it is recommended that the system be checked by your
service contractor.
• Turn OFF the main switch when the system is to be stopped for a
long period of time: as the oil heater is always energized even when
the compressor is not working, there will be electricity consumption
unless the main switch is turned OFF.
11.2 PRELIMINARY CHECK
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 correctly
connected.
YUTAKI M units must be configured by the installer to get the
perfect setting and the unit working.
11.2.1 Checking the unit
• Check external appearance of the unit to look for any
damage due to transportation or installation.
• Check that all the covers are totally closed.
• Check that the recommended service space is respected
(see "6.1 Service space").
• Check that the unit has been correctly installed.
11.2.2 Electrical checking
!
C A U T I O N
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 and sensors .
• 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
this document, 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 unit are connected as shown in
the corresponding chapter.
• Check to ensure the electrical wiring of the unit is connected as
shown in the chapter.