Trion CB777, 707 and 500 Humidifier Series Parts
Trion 707 Series Service Issues
Water quality is a major problem causing corrosion and mineral build-up. Using a food service quality water purifier with scale treatment will keep the 707u clean. The purified water will eliminate the white mineral dust that falls from the evaporating air and it removes odors and corrosives such as chlorine and sodium.
Common problems with the 707 series are:
- Gap between impeller and motor needs adjustment.
- Motor corrosion from hard water.
- Not draining the 707 off season causes motor seizure.
- Impeller and Pump Cap clog.
Instructions for setting gap: Trion Impeller Adjustment
These photos show a 707u used in a humidor. The photo on the right shows the 707u motor assembly. The motor still runs fine but the aluminum motor cap is heavily corroded from chlorine and has a heavy crust of lime.
|The filtration process of stripping the water of minerals can leave water acrid. The acrid water will cause corrosion. A simple combination filter will remove the minerals, remove the odors, and treat the water with a softener that corrects the high PH.
Photo left shows the impeller pump clogged from the minerals. Removing the pump cap results in sediment falling out. This sediment caused un-balance. To clean the impeller, remove the pump cap. The cap is pressed-in and should simply pull-out. Run the cap under hot water if its stuck.
The unbalance caused the impeller to became loose. The setscrew appeared rusted but it was the brown mineral build-up. The impeller clearance from the base needs to be set to 1/16". The set screw was re-secure using a 1/16" allen wrench.
The Photo on the left shows the top of the impeller. Minerals have been centrifugally separated from the water. Use a pipe cleaner to clean the 6 small holes.
At Bel-Aire we use an automotive parts washer with humidifier cleaning detergent. The re circulating pump cleans the most difficult humidifiers or electronic air cleaners.
Water Treatment & Filtration
Humidifier Reservoir Treatment
Corrosion has been major problem with steam humidifiers which are related to water supply chlorine and minerals.
The NuCalgon 4296-60 primarily used for keep condensate pan drain lines clear can also be used to treat humidifier. Pan-Treat tablets can be used to condition humidifier water in order to prevent odors and deposit build-up.
Pan-Treat is formulated with ingredients proven effective in cleaning and preventing these deposits, and its use will eliminate the extra maintenance costs associated with odors, mineral build up, plugged drains and overflows.
Easy to use and safe, water soluble, non-corrosive, non-toxic and biodegradable.Â Use 2-4 tablets every four to six weeks as needed. Clean and rinse out the humidifier's reservoir on a regular basis.