Hitachi SET FREE Serie Manual De Instrucciones página 17

TRANSPORT, LIFTING AND HANDLING OF THE UNITS
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D a n G e r
Pressure Vessel and Safety Device: This air conditioner is equipped
with a high pressure vessel under PED (Pressure Equipment
Directive). The pressure vessel has been designed and tested before
shipment according to PED. Also, in order to prevent the system
from an abnormal pressure, a high pressure switch, which needs no
field adjustment, is utilized in the refrigeration system. Therefore,
this air conditioner is protected from abnormal pressures. However,
if abnormally high pressure is applied to the refrigeration cycle
including the high pressure vessel(s), it will result in serious injury
or death due to explosion of the pressure vessel. Do not apply a
pressure higher than the following pressure to the system, by
modifying or changing the high pressure switch.
start-up and operation: Check to ensure that all the stop valves are fully opened and no obstacle exists at the inlet/outlet sides
before start-up and during the operation.
maintenance: Periodically check the high pressure side pressure. If the pressure is higher than the maximum allowable pressure,
stop the system and clean the heat exchanger or remove the cause.
maximum allowable Pressure and High Pressure Cut-out Value:
refrigerant
R410A
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n o t e
The label indicating compliance with the directive on pressure equipment,
the vessel category and capacity is located on the vessel itself.
Location of high pressure switch
High pressure switch
Accumulator
5 transPort, liftinG anD HanDlinG of tHe Units
5.1 transPort of oUtDoor Unit
Corrugated paper
frame
Do not remove
corrugated paper
frame and plastic
bands
Transport the product as close to the installation location as practical
before unpacking
When using a crane, hang the unit according to the description
of the label attached to the outdoor unit.
The unit shall not be handled by one person. Do not use the PP
band to move the unit although the unit is packed by PP band.
Additionally, do not touch the heat exchanger with bare hands.
The fin of heat exchanger may cause injuries.
The corrugated paper frame is not sufficiently strong. Therefore
7 PMML0479 rev.2 - 02/2018
maximun allowable Pressure (mPa)
4.15
Compressor
Apply rope on the cloths
or corrugated papers
more than 15 mm in
thickness.
Wooden base
!
D a n G e r
Do not handle, modify or change the high pressure switch in the
air conditioning unit. If abnormally high pressure is applied to the
elements in the air conditioning unit refrigerant cycle, including the
high pressure vessels, these could explode resulting in serious
injury or loss of life.
High Pressure switch Cut-out Value (mPa)
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n o t e
The high pressure switch is marked on the electric circuit diagrams of the
outdoor unit as PSH and is connected to the printed circuit board PCB1
of the unit.
Structure of High Pressure switch
Contact point
Connected to the electrical switch
follow the instructions below in order to prevent the unit
deformation.
• Do not step or put any material on the product. It may cause
injury.
• Apply two sling belts onto the outdoor unit, when lifting it with
a crane.
• To protect the unit, do not remove any packing.
• Do not stack or put any material on the product.
• Apply wire ropes on both sides of the unit as shown in the
figure.
!
C a U t i o n
Do not place other material on top of the outdoor units during transport
and storage.
4.00 ~ 4.10
Pressure detected