If the suction of the range hood in the hotel is insufficient, it will lead to the failure to effectively exhaust the lampblack, which will lead to the decline of indoor air quality and even affect the dining experience of guests. If you encounter this situation, you can take the following measures:

1. Clean the filter of the range hood: If the filter of the range hood is not cleaned for a long time, it will lead to the accumulation of dust and oil stains, which will hinder the discharge of oil fume. Therefore, you need to clean the filter screen of the range hood regularly to ensure its normal operation.

2. Replace the filter with a new one: if the filter is out of date or too damaged to be cleaned, it needs to be replaced with a new one.

3. Check the power cord of the range hood: Sometimes the working reason of the range hood may be due to circuit problems, so you need to check whether the power cord is damaged to ensure the normal operation of the circuit.

4. Add external vents: If the suction of the range hood is still insufficient, the number of external vents can be increased to ensure that fresh air can circulate through the room.

5. Replace the high-efficiency range hood: If the above measures are still ineffective, it may be necessary to replace a more efficient range hood to ensure that the lampblack can be effectively discharged from the room, thus ensuring the indoor air quality and the dining experience of the guests.