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Les langues disponibles
Installation and Operating Instructions
CHAPTER 9
SERVICE AND
MAINTENANCE
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DANGER
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WARNING
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WARNING
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WARNING
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WARNING
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ATTENTION
Central ventilation unit – KWL 470 W/W ET
8.6.10
Heat exchanger
Define heat exchanger type:
• Aluminium
• Plastic
• Enthalpy
8.6.11
Save / Restore
Save or restore unit and user settings:
• Commissioning settings
• Save commissioning settings
• Restore commissioning settings
• User settings
• Save user settings
• Restore user settings
• Restore factory settings
9.1
Unit maintenance
The unit must be checked for contamination and dirt (visual inspection) as needed or at least every
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Danger to life due to electric shock
An electric shock can result in death or serious injuries.
> Before opening the unit, the unit must be fully isolated from the power supply.
> The unit may only be opened by an authorised electrician.
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Risk of burns due to hot surfaces!
Hot surfaces can cause serious burns.
> Allow unit to cool down for at least 5 minutes or wait until the fans are turned off.
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Risk of injury due to rotating fans!
Rotating fans can injure limbs and cause serious injuries.
> Before working on the unit, wait until the fans are turned off.
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Risk of injury due to the panel or unit door falling down!
The panel or unit door can fall down when removing and cause serious injuries.
> Wear protective footwear.
> Carefully remove the panel or unit door with both hands.
1. Unhook the panel (magnetic) upwards.
2. Loosen and remove the screws in the unit door.
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Risk of injury due to the high weight of the heat exchanger!
The heat exchanger can fall down and cause serious injuries when removed from the unit.
> Wear protective footwear.
> Carefully remove the heat exchanger from the unit with both hands.
3. Remove heat exchanger.
Damage to the unit due to the use of aggressive cleaning agents.
Aggressive cleaning agents can damage the unit.
> Do not use aggressive cleaning agents.
4. Remove dirt with a damp cloth and a small amount of washing-up liquid.
9.2
Filter maintenance and replacement
9.2.1 Filter maintenance
The filters must be checked as needed or at least every 6 months for contamination and dirt (visual inspection) and, if
necessary, replaced, see chapter 9.2.2 „Filter replacement", page 28.
The maximum service life of the filters is 1 year. The filters must then be replaced.
9.2.2 Filter replacement
The need to change the filters is displayed:
– via the easyControls 3.0 software by the symbol
– via the control element KWL-BE Touch by the symbol
– via the control element KWL-BE Eco by LED lighting up.
The arrangement of the air filters can be found on the unit label. When installing the filter, the air direction according to
the unit label must be observed, which is indicated by arrows on the filters.
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28
EN
year.
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