Deerma DEM-F800 [4/8] Cleaning and maintenance
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Deerma DEM-F800 [4/8] Cleaning and maintenance

Deerma DEM-F800 [4/8] Cleaning and maintenance
1. In order to maintain the optimum performance of the
humidifier, clean the sink and water tank of the humidifier
regularly.
2. Prevent the transducer and the filter from accumulating dirt,
and clean them frequently; it is difficult to clean stubborn dirt
after a long time.
3. Before cleaning, power off and disconnect the power plug.
When unplugging, hold the power plug tightly instead of
pulling the power lead.
4. Do not clean the machine surface with chemical solvents,
gasoline, polishing powder and other substances, and do not
clean the machine with any detergent freely; it is best to clean
with clear water.
5. Use soft cloth for routine cleaning of all parts. If the scale in
the sink cannot be removed by routine cleaning, use the
detergent produced or supervised by our company. Dissolve
the citric acid with 60℃ hot water (the ratio of water to citric
acid is 10mL : 1g), pour it to the scaling part, soak it for 5
minutes, then gently scrub the scaling surface with a brush until
the scale is removed.
6. Remove the filter from the water tank lid, soak it in the
edible white vinegar for 15 minutes, gently shake dozens of
times, and then clean with clear water. The function of the
cleaned filter is indistinguishable from the new one.
7. Regularly change the old water in the sink and water tank to
keep the humidifier clean.
8. When the machine is not used for a long time, please clean
all parts and put them in the original packing box or place
them in a dry place after drying.
Cleaning and Maintenance
Turn on the switch but there is no mist
Cause: The power supply is not connected or faulty
Solution:
Reconnect the power supply. If the machine still
works abnormally, please contact Deerma after-sales
service center in time.
Fault Analysis and Removal
Note: If the fault cannot be removed after the above
phenomenon analysis, please contact the maintenance point
or dealer of our company. Non-professional personnel shall
not disassemble and assemble the machine.
A small amount of mist
Cause: There is much scale or too much impurity
in the water.
Solution:
Clean the atomizer plate and change clean water.
Abnormal noise
Cause: The water in the tank is too little, and the
surface is unstable.
Solution:
Fill the sink with water, and place the humidifier
on a firm surface
Solution:
Clean the surface of the atomizer plate with clear water,
or clear the foreign bodies in the air inlet screen.
There is no mist after power-on
Cause: Check whether the bottom air inlet screen is
blocked by foreign bodies, or whether there is a large
amount of scale on the atomizer plate.
Tips
About usage: Remove the nozzle cover before filling
water into the water tank, turn the water tank upside
down and open the water tank lid to fill water, or fill
water from the side water filling nozzle, tighten the
water tank lid and install the water tank on the base,
and then the machine can be used normally.
About the accumulated water in the base: the
humidifier scatters the liquid water into water mist by
the vibration of the ultrasonic atomizer plate, and the
water tank is only a transitional water storage tool.
The sinks of all humidifier bases will accumulate
water, please feel free to use.
About mist amount adjustment: The humidifier can
adjust the fog amount. If there is water around the
machine during use, it will indicate that the room
humidity is too high. Please adjust the fog amount
appropriately.

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