Yamato Scientific WS220 Water Purifiers - Manual (Page 9)

5
Before Using this unit
Requirements for Installation
3. Do not use this unit in an area where there is flammable or explosive gas
• Never use this unit in an area where there is
flammable or explosive gas. This unit is not
explosion-proof. An arc may be generated
when the power switch is turned ON or OFF,
and fire/explosion may result. (To know about
flammable or explosive gas, refer to page27
“List of Dangerous Substances”.)
4. Do not modify
• Modification of this unit is strictly prohibited.
This could cause a failure.
5. Installation on horizontal surface
• Set this unit to the flattest place. Not setting
this unit with its 4 legs covered with rubber
contacted to the setting place surface evenly
could cause the vibration or noise, or cause
the unexpectible trouble or malfunction.