Before Operation - Hitachi RAI-50PPD Installations- Und Betriebshandbuch

BEFORE OPERATION

During operation:
• Avoid an extended period of exposure to a direct air flow.
• Do not insert fingers, rods or other objects into the air outlet
or inlet. As the fan is rotating at high speed, it will cause
injury. Before cleaning, be sure to stop the operation and turn
the breaker OFF.
• Do not use any conductor as fuse wire. This could cause a
fatal accident.
• During thunderstorms, disconnect and turn off the circuit
breaker.
• Do not attempt to operate the unit with wet hands. This could
cause fatal accident.
• Do not direct the cool air coming out from the air conditioner
to household heating appliances (stoves, electric kettles,
ovens, etc.), as this may affect their operation.
• Please ensure that the outdoor mounting frame is always
stable, firm and without defects. Otherwise, the outdoor unit
may collapse and cause damage and injury.
• Do not splash or direct water to the body of the units when
cleaning them, as this may cause short circuit.
• Do not use any aerosol or hair sprays near the indoor unit.
4 BEFORE OPERATION
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C A U T I O N
• Supply electrical power to the system for approximately 12 hours
before start-up after long shutdown. Do not start the system
immediately after power supply, it may cause a compressor failure,
because the compressor is not heated well.
• Make sure that the outdoor unit is not covered with snow or ice. If
covered, remove it by using hot water (approximately 50ºC). If the water
temperature is higher than 50ºC, it will cause damage to plastic parts.
4.1 EFFICIENT USE OF INDOOR UNIT
• Do not leave a window or a door open.
The operating efficiency will be decreased.
It may cause dew condensation of the indoor unit. (Ventilate
a room sufficiently too.)
• Attach a curtain or a blind to a window.
Direct sunlight is prevented and the cooling efficiency will be
increased.
• Do not use heating appliances during the cooling operation
as possible.
The cooling efficiency will be decreased. It may cause dew
condensation and dropping dew.
3 PMML0477 rev.0 - 07/2017
Their chemicals can adhere to the fins of the heat exchanger
and block the flow of evaporation water to the drain pan.
Water will drop on the tangential fan and splash out from the
indoor unit.
• Switch off the units and turn off the circuit breaker during
cleaning.
• Do not climb on the outdoor unit or put objects on it.
• Do not put water containers (like a vase) on the indoor unit. If
water drips into the unit, it will damage the inside and cause
short circuit.
• When operating the unit with the door and windows opened
(relative humidity constantly above 80%) and with the air
deflector facing down or moving automatically for a long
period of time, water will condense on the air deflector
and drip down occasionally. This will wet your furniture.
Therefore, do not operate under such condition for an
extended time.
• The preset room temperature cannot be achieved if the
amount of heat in the room exceeds the cooling or heating
capacity of the unit (for example, if more people enters in the
room, if heating equipment is used, etc.).
• When the system is started after a shutdown 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 stopped for a long
period of time. If the main switch is not turned OFF, electricity is
consumed, because the oil heater is always energized during
compressor stopping.
• Use a circulator if warm air stays around ceiling.
The comfortability will be increased. Contact your distributor
for the detail.
• Change the air flow direction downward if the ceiling surface
gets dirty.
It is recommended to change the air flow direction by approx.
30º downward from the levelness.
• Turn OFF the main power source if the indoor unit is not
used for a long time.
If not, the standby electricity charges will have to be paid
even if the indoor unit is unused.