Mister-
MINI
®
Humidifier
Installation, Operation, & Maintenance Manual
13
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Maintenance
The following symptoms indicate that cleaning the solenoid valve is required:
• Sluggish valve operation
• Excessive noise
• Constant water spray
• Streaming water
To clean the solenoid valve:
1. Turn the power to the furnace OFF.
2. Turn the humidistat to the lowest position.
3. Turn off the water supply at the saddle valve.
4. Remove the screw securing the cover of the humidier to the housing.
5. Remove the cover assembly from the humidier by tilting outward.
6. Be careful not to kink the water supply line or cause undue strain on the wiring.
7. Remove the solenoid valve assembly from the cover using a Phillips head screwdriver.
8. Using a 3/4” wrench, remove the brass nozzle adapter from the OUT port of the valve body. Remove the compression
tting from the IN port of the valve.
9. Remove the coil from the assembly by turning the valve body counter clockwise.
10. Clean and remove all particulates from the brass ttings, lter, plunger/spring assembly and orices in the valve
body using a 50/50 solution of white vinegar and water.
11. Reassemble the parts, paying careful attention to the diagram below for the correct placement.
12. After completing the assembly, operate the unit to be sure it is functioning properly and check for leaks.
Coil Assembly
Valve Body
Spring O-Ring
Plunger
Solenoid Valve Assembly
1/8” NPT to 1/4”
Brass Compression
Fitting
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