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Installation and Operating Instructions
ATTENTION
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DANGER
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WARNING
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WARNING
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WARNING
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DANGER
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Central ventilation unit – KWL 470 W/W ET
Damage to the heat exchanger due to the use of aggressive cleaning agents.
Aggressive cleaning agents can damage the heat exchanger.
> Do not use aggressive cleaning agents.
4. Clean the heat exchanger with a vacuum cleaner with a brush nozzle or with water.
5. During installation, place the heat exchanger on the guide rail and push up to the stop. Ensure that the receptacle
seals are not damaged!
6. Reattach the unit door and tighten by hand using screws. Do not use a cordless screwdriver or the like!
9.4
Condensate drain maintenance
The condensate drain must be checked for functionality and, if necessary, replaced as needed and at least every 6
months.
Carry out functional inspection as follows:
– For users
1. Dismantle siphon.
Reverse order of installation, see chapter 4.3 „Install ball siphon", page 12.
2. Clean siphon with water.
3. Re-install siphon, see chapter 4.3 „Install ball siphon", page 12.
– For electricians only
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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.
3. Pour some water into the condensation tray with a watering can.
4. Check whether the water drains via the condensate hose and clean the condensate drain, if necessary.
9.5
Standstill and disposal
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Danger to life due to electric shock
When dismantling, live parts can be exposed, which can result in electric shock if touched. Before dismant-
ling, isolate the unit from the mains power supply and protect against being switching on again!
Parts and components of the fan, whose service life has expired, e.g. due to wear and tear, corrosion, mechanical load,
fatigue and/or other effects that cannot be directly discerned, must be disposed of expertly and properly after dis-
assembly in accordance with the national and international laws and regulations. The same also applies to auxiliary
materials in use. Such as oils and greases or other substances. The intended and unintended further use of worn parts,
e.g. impellers, rolling bearings, filters, etc. can result in danger to persons, the environment as well as machines and
systems. The corresponding operator guidelines applicable on-site must be observed and used.
Please think of the environment, you can make a significant contribution to the environmental protection by returning
batteries and accumulators!
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