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4
How to Maintain Your Humidifier
NOTE: The model number of your unit should be handwritten on the
cover of this manual.
MODEL 45 MODEL 90 MODEL 190
Replacement Pad Replacement Pad Replacement Pad
#A04-1725-033 #A04-1725-034 #A04-1725-034
1. Turn the water off at the saddle valve by turning the T handle clock-
wise ( ).
2. For models 45 and 90, remove the humidifier cover (A) by lightly pry-
ing down and out on the bottom lip of the cover. For model 190,
remove the cover (A) by lifting upward on the bottom of the unit.
3. Remove the drum assembly (B) by lifting the drum shaft from the bear-
ing (C) and pulling it out of the motor coupling. Next, remove the drum
from the unit.
4. Remove the rubber valve seat (D) from the valve by grasping it
between your thumb and forefinger and lifting it upward.
5. Raise the float up to remove the water pan (E) for cleaning.
6. Refer to the diagram below for disassembly (and reassembly) of the
drum.
7. Clean all parts in a 50/50 solution of vinegar and water. (For stubborn
deposits, it may be necessary to soak parts over night.)
8. For reassembly, reverse steps 1 through 6. To ensure proper humidi-
fier operation, see “How to Check the Humidifier for Proper Operation”
at the top of page 3.