Challenge HTJ-2027 Instruction Manual page 5

In use:
Turn control knob (4) to set the vapor release rate depending on requirement,
including dryness or size of room.
When the tank is short of water, the indicator will turn Red once again, and vapor
release will stop. Turn off and un-plug the unit from the wall socket.
How to re-fill with water:
1. Remove the white fog nozzle from the top of the blue water tank. Never
remove or fill the water tank with the fog nozzle attached.
2. Carefully remove the blue water tank from its base, and turn the tank
upside-down.
Note: During this process the flume (in the base unit) will be full of water, lift off
the tank into a towel to catch drips if necessary.
3. Continue as step 3 (See "First time use")
CLEANING
Always unplug the unit from the mains before commencing any cleaning in order
to avoid the risk of electric shock.
Tank cleaning
Remove the water tank (2) from the unit and unscrew the water cap. Wipe away
any limescale present with a clean soft cloth then wash it with clean water. We
recommend cleaning the water tank every 2 to 3 weeks.