aldes VEX 790T Handbuch für Montage und Wartung - Seite 15

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Maintenance Period

Every year:

- Check tension of the drive belt and be sure the belt is running properly (for units with rotary type heat exchanger)

- Paint the exterior surface of casing to prevent corrosion on metal surfaces of the unit.

- Clean fan propeller and fan shaft of the fan.

- If the unit has damper, check the connection of damper, set screw and rigging.

- Check all electrical connections and isolation.

- Check if there is any damaged cable connections.

- Check if there is any damaged on all gaskets around door and buffer. Check the situation of all isolation materials. Check all

connections to prevent fracture and leakage, and if there is any repair it.

Every 3-6 months:

- Check all electrical connections.

- Check the accumulated dirt on coils.

- If the unit has damper, clean damper and its components.

- Clean or change clogged or dirty fi lters.