Steam.
Fast 
Model SF - 450
Professional Style Steamer
Dear Consumer
Thank you for purchasing the SteamFast Professional Style steamer.
If tap water is being used, in order to prolong the life of your steamer, we recommend that the unit be drained after each use. This will reduce lime buildup within the u n i t . If used in a hard water area the use of distilled water is encouraged. If you chose to use distilled water it will not be necessary to drain the unit.
Your SteamFast steamer is equipped with a thermostat control that will shut the steamer off when the temperature reaches 250°F. The steamer will automatically begin heating again when the temperature drops below 250° F.
Should the water tank run dry while the unit is in operation, we recommended that it be turned off immediately. If the steamer is not turned off immediately, the thermostat will cause the unit to shut off, however, damage may occur to the unit.
In the event that the steamer is left in operation without water or the thermostat should fail to operate properly, the unit's fuse will burn out at 302° F causing the steamer to shut off.
Top Innovations, Inc.
400 NW Platte Valley Dr.,
Riverside, MO 64150
web site: www.topinnovations.com