Hitachi YUTAKI Serie Manuel D'utilisation page 26

CommISSIonInG
11 COMMISSIONING
When installation is completed, perform test run according to the
following procedure, and hand over the system to the customer.
Confirm that the electrical wiring and the refrigerant piping are
correctly connected.
!
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 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 outdoor 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.
12 MAIN SAFETY DEVICES

Compressor Protection
High Pressure Switch:
This switch cuts out the operation of the compressor when the discharge pressure exceeds the setting.

Fan Motor Protection
When the thermistor temperature is reached to the setting, motor output is decreased.
The other way, when the temperature becomes lower, limitation is cancelled.
Model
for Compressor
Pressure Switches
High
low
for control
fuse
1~ 230V 50Hz
3n~ 400V 50Hz
CCP Timer
Setting Time
for Condenser fan motor
Internal Thermostat
for Control Circuit
fuse on PCB
16 PMML0372B rev.1 - 03/2016
All manuals and user guides at all-guides.com
RAS-(4-6)WHVNPE
- Automatic reset, non-Adjustable (each one for each compressor)
Cur out mPa
Cut-In mPa
Cut-out mPa
Cut-In mPa
-
A 50
A --
-
min.
- Automatic reset, non-Adjustable (each one for each motor)
A
• 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 outdoor units are correct.
• Check whether or not the electrical wiring of the indoor units and the
outdoor units are connected properly.
!
C A U T I O N
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 Catalogue of the unit and ensure that the
components comply with national and local codes.
RAS-(4-6)WHNPE
4.15
3.20
0.30
0.20
--
2 X 20
non-Adjustable
3
5
RAS-(8-10)WHNPE
--
2 X 40