Condensate Drain Maintenance; Metal Tray Maintenance - Helios KWL 340 D Manual

Installation and Operating Instructions
EN
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WARNING
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WARNING
ATTENTION
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WARNING
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WARNING
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WARNING
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Central ventilation unit – KWL 220/340 D
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 unit door falling down!
The unit door can fall down when removing and cause serious injuries.
> Wear protective footwear.
> Carefully remove the unit door with both hands.
1. Loosen and remove the screws in the unit door.
2. Pull out sealing strip (see Fig. 49).
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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.
> Carefully remove the heat exchanger from the unit with both hands.
3. Carefully remove the heat exchanger
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. Re-attach the unit door and hand-tighten with screws. Do not use a cordless screwdriver or similar!
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:
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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 unit door falling down!
The unit door can fall down when removing and cause serious injuries.
> Wear protective footwear.
> Carefully remove the unit door with both hands.
1. Loosen and remove the screws in the unit door.
2. Pour some water into the condensation tray with a watering can.
3. Check whether the water drains via the condensate hose and clean the condensate drain, if necessary.
9.5

Metal tray maintenance

The metal trays should be checked for functionality and cleaned, if necessary, as required but at least every 6 months.
In order to prevent the intake of condensate through the fans, metal trays are mounted in the unit below the left and
right motor unit.
The metal trays prevent the accumulation of condensate in this area and they must be checked for correct
positioning (cf. Fig. 51 and Fig. 52).
Perform visual inspection:
There must be no water in the metal trays.
Dismantle and empty the metal trays, if necessary, and wipe with a dry cloth.
ù from the unit (see Fig. 50). Ensure that the fins are not damaged!
Fig. 49
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Fig. 50
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