Computer Hirsch

Repair of a defective limit switch of your Dunkermotoren venetian blind drive D249 / D349 We offer the repair of a defective limit switch for the upper or lower end position. It comprises the inner limit switches of the venetian blind drives. A defect becomes apparent by the following conditions: – The upper or lower end position can no longer be set. – The blind does not move more to the lower end position but stops before. – Die Jalousie bleibt in der unteren Endlage nicht mehr stehen. The blind has not reached its lower end position. The blind does not stop at the lower end position. – The blind moved back up to the stop via the lower end position. – In the downward movement, the blind passed the lower end position up to the upper stop and is blocked by the mushroom switch that has been approached the wrong way round.