Title: Avtrekksvifter punktavsug.pdf
The fan should be cleaned when necessary, at least 1/year to avoid imbalance and unnecessary damage to the bearings. A filter will prolong the time interval between each cleaning of the fan. (It is sometimes recommended to install a filter guard). The fan bearings are maintenance free and should only be replaced if damaged. Do not use a high- pressure cleaner (steam jet) when cleaning the fan. Ensure that the fan impeller's balance weights are not moved or the fan impeller distorted. Listen for abnormal operating noise.Resetting of the thermal trips Manual thermal trips (SP1) are reset by disconnecting the mains for approx. 10-20 min.Fans with external leads for thermal trips (TK) are reset from the external motor protection. This protection may not have automatic resetting.Make sure the fan has not been blocked or that the motor protection has tripped. Contact the supplier if the motor does not start after controlling and/or resetting the motor protection.