- Periodically inspect and clean water inlet screen located at the inlet of the unit (at the hose attachment on the Ultra 600/1300 models-Ultra 250 filter is part of the pump).
- Periodically inspect nozzle to make sure it is clean. Restricted water flow, shut down or interrupted spray pattern is an indication of obstruction in the nozzle.
- DESCALING: hardness or mineral content in water along with steam temperatures will eventually create a coating or build-up of scale in the heating coils. Excessive scale will shorten coil life and interfere with temperature controls. Scale appears periodically. Check for scale build-up on inside of steam connections. When scale has built-up to such a degree that the machine senses accurate low water flow internally, the unit will not light, or will light and shut-off. A test for scale build-up is to remove the nozzle and see if the machine lights, and if it does, then you may need to descale the unit. Other low water issues maybe the cause, such as a bad pump, etc. See DESCALING Section.
- DO NOT EXPOSE THE MACHINE TO FREEZING TEMPERATURES:
This can ruin the coils, pumps and flow switch. Winterize the machine when necessary. This can be done by running anti-freeze or windshield wiper fluid through the garden hose, as you do when you descale a machine. See DESCALING Section. The Ultra 250, 600 and 1300 models require 1 to 2 gallons of fluid to completely fill the coils and water system. When you are ready to resume using the machine, flush thoroughly and dispose of the anti-freeze carefully before heating the system.