Sears 303.147012 manual Setting, Turn off water at humidifier saddle valve, As advised Above

SPLASH INSIDE HUMIDIFIER:

This humidifier depends on the difference of air pressu re between the supply air plenum and the return air plenum to propel air through the humidifier. Some furnaces have higher pressures than others, This could result in air traveling at high speed through the humidifier. This can cause droplets of water to be picked up and splashed against the inside of the humidifier case. Eventually a

coating of lime will build up. It could, in extreme cases, cause leaking of water from the humidifier.

TO REDUCE SPLASH:

Partially close the damper located in the collar on the return air plenum. Some experimenting may be necessary to find the proper

setting.

maintenance

CLEANING AND SERVICE INSTRUCTIONS:

CAUTION: Before performing service, inspection, or maintenance:

[] 1 Turn off electricity at furnace, humidifier, and humidistat.

2 Turn off water at humidifier saddle valve.

3Wear safety glasses.

This humidifier is an appliance that evaporates water in large quan- tities. The dissolved minerals normally found in tap water in vary- ing degrees are left as lime deposits on the media pad and other parts in contact with the water. Deposit build-up will reduce hu- midifier output. Annual cleaning and replacement of the media pad is recommended. Since water conditions vary, it may be nec- essary to service more or less often. Establish your own service schedule. Ease of service has been foremost in the design of this humidifier following the steps below:

servicing the media pad

1 Lift Offfront panel.

2 Remove media pad by lifting bottom edge up slightly and pivoting out. Inspect and replace if badly b_ocked with mineral deposits. (Media Pad available from Seam, Stock No. 42-14711 .)

3 If necessary, clean inside of humidifier case (especially lower drain area) with water and vinegar solution, detergent and water, or Sears All-Purpose Humidifier Cleaner, Stock No. 42-14713.

4 Install media pad by sliding top edge up and pivot- ing bottom edge into position.

[] 5Replace front panel.

6 Turn on water and electricity and test operation by observing if water is flowing to drain while furnace is running and humidistat is set to =test" position.

[] 7 Set humidistat according to outdoor temperature as instructed on operating instruction label. Unit is back in operation.

periodic preventative maintenance

Periodic inspection and preventative maintenance of these com- ponents is important for continued, efficient operation of the hu- midifier. Refer to exploded view for location of components.

distribution trough

[] 1 Lift Off front panel.

[] 2 Loosen the (2) #6 outer screws on top of the hu-

midifier. Remove and clean the distribution trough and pad set.

Replace pad set (Pt. No. 35587901) if badly soiled.

[] 3 Reassemble pad set and distribution trough and se-

cure with the (2) #6 screws.

drain tube

I_ 1Using spring hose clamp pliers, expand hose clamp

and remove drain tube.

[] 2 Clear internal lime and calcium deposits by flexing or striking on hard surface.

[] 3 Flush with water under pressure.

4 Reinstall drain tube and hose clamp.

solenoid water filter

[] 1 Remove water line at solenoid.

[] 2 Remove nylon elbow inlet fitting filter/orifice assem- bly from solenoid valve by unscrewing (turn counter-clockwise).

_3i Check for clogging by blowing through one end. If clogged, replace with new fitting assembly, Part No. 05291201.