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DEM-F300

Read Instruction manual carefully before use

CIRCUIT DIAGRAM

This image here is for reference purpose only. No notice will
 be given otherwise in case of any change. The actual 
product may vary and we reserve the right of final 
explanation.

Deerma 

Humidifier

Keep your life clean and refreshing all the time.

W ith its micron mist and simply operation so that to deeply moist 

your skin and each corner in your house. You can enjoy each 

wonderful moment when you use it.

PRODUCT STRUCTURE

Atomizer 

Reed switch

Fan

L

N

2

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Regulator

120V~60Hz

Top cover

Air duct plane

Housing part

Concentrator

Active part

Air outlet

Maximum water level

Power button

Power line

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Address: No.4-1 Longhui Road, Malong Village Committee, Beijiao, 
Shunde, Foshan, Guangdong, China   Postal Code: 528311
[email protected] 

FOSHAN SHUNDE DEERMA ELECTRIC APPLIANCES CO., LTD.

CLEANING AND MAINTENANCE

1.Please clean the water container and the water tank on a 
regular basis to maintain the optimal performance. 
2.Please clean the converter and the filter on a regular basis to 
prevent any scale. The scale from a long time can be hard to clean. 
3.Please unplug the machine before cleaning. Please properly 
hold the power plug rather than pull violently when unplug 
the machine.
4.Please avoid using chemical solvents, gasoline, polishing 
powder, etc. to clean the surface of the machine. Please 
clean the machine with clean water rather than detergent. 
5.Please clean each part with a soft towel. If the scale 
cannot be removed, please use the detergent produced or 
authorized by us. Melt the citric acid with 60°C water (mix 
water and citric acid as per 10mL:1g) and keep such mixture 
stay on the scale for 5 minutes. Then fully remove the scale 
with a brush. 
6.Remove the filter from the water tank and keep it in the white 
vinegar for 15 minutes. Gently shake it for about ten times and 
wash it with clean water. The cleaned filter shall have no differ
-ence from the new filter in terms of their functions. 
7.Please empty the water tank and the water container on a 
regular basis to keep the machine clean. 
8.Please clean each part of the machine if it will be idle for 
a long time and dry it. Then put it back to the packing box 
and store in a dry place. 
9.Remove the top cover and water inside the water tank. 
Turn the concentrator anticlockwise as indicated by the 
“lock/unclock” on the internal surface of the water tank and 
remove the concentrator (Please be noted not to lose the 
active internal part); then clean the atomizer as required. 
10.When the cleaning is finished, properly put the concentrator 
on the machine and turn clockwise until it is locked. 

Clean of the atomizer 

NOTE

About the water in the base:

 This humidifier uses ultrasonic ato-

mizer to atomize the water. The water tank serves only as a tran-
sitional water storage tool and it is unavoidable that you may see 
water in the water container in the base. No worry about this.

About mist amount adjustment:

 You may adjust the mist amount 

during use. In case of any water around the machine during your 
use, it indicates high humidity in the room and you may want to 
adjust down the mist amount. 

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