Maintenance - Hitachi RAI-50PPD Installation And Operation Manual

MAINTENANCE

4.2 EFFICIENT USE OF COOLING AND HEATING
1 Air flow direction: the appropriate air outlet angle is approx.
35º. If the cooling is not sufficient, change the air flow
direction. Pay attention to dew drop which may occur due to
the long cooling operation with low louvre angle.
35°
Air outlet angle (above center)
2 Air flow volume: "AUTO" should be usually used.
3 Temperature: the recommended set temperature is 27 to 29ºC.
If the cooling is not sufficient, set the lower temperature.
?
N O T E
About Multi-Split system
When the number of indoor unit or the operating mode is changed, the air outlet temperature may be changed and the indoor temperature is changed.
In this case, set as follows.
• During cooling: lower slightly the temperature setting.
• During heating: raise slightly the temperature setting.
5 MAINTENANCE
!
D A N G E R
• Turn OFF the power source before the maintenance work. If not,
it may cause a fire or an electric shock.
• Perform the maintenance work with stable footing. If not, it may
cause falling or injury.
5.1 DAILY MAINTENANCE
5.1.1 Cleaning Air Filter
1 Open the air inlet grille.
While sliding the knobs on both side of the air inlet grille in
the arrow direction, open the air inlet grille.
Air inlet grille
2 Remove the air filter.
Hold the lower side of the air inlet grille and release the filter
lock. While sliding the air filter in the arrow direction, release
4 PMML0477 rev.0 - 07/2017
COOLING
35°
Louver
angle
Knobs
HEATING
1 Air flow direction: the appropriate air outlet angle is approx.
60º. If the heating is not sufficient, change the air flow
direction.
60°
Air outlet angle (above center)
2 Air flow volume: "AUTO" should be usually used.
3 Temperature: the recommended set temperature is 18 to 20ºC.
If the heating is not sufficient, set the higher temperature.
!
C A U T I O N
Hold the air filter and the air inlet grille securely by hand when opening,
closing, attaching or removing them. If not, it may cause the product
falling, resulting in an injury.
?
N O T E
Do not operate the system without the air filter, to prevent the indoor unit
heat exchanger from being clogged.
4 catches on both sides to remove the air filter from the air
inlet grille.
Air inlet grille
Air Inlet Grille
Air filter
Air Filter
3 Clean the air filter.
• Vacuum dust with a cleaner, or wash the air filter with water
or neutral detergent.
• Dry the air filter in the shade.
60°
Louver
angle
Upper part of filter
Upper Part of Filter
Hook
Hook
Hook Hook
Lower part of filter
Lower Part of Filter