HE420A,B AND HE460A,B STEAM POWER HUMIDIFIERS
69-1112—1
6
Every 1 to 4 Months
(Depending on Water Quality)
WARNING
Voltage Hazard.
Can cause electrical shock and
equipment damage.
Disconnect power and shut off water
supply before installing or servicing.
IMPORTANT
Never oil any part of the humidifier.
Use the following procedure to clean your
Honeywell humidifier:
1. Unplug the humidifier and fan control.
2. Disconnect the wires from the humidity
control external screw terminals.
3. Turn off the water supply.
4. Disconnect the water feed tubing at the
float valve.
5. Disconnect the overflow at the humidi-
fier.
IMPORTANT
Allow water to cool before
continuing.
6. Use a quarter and very slowly turn the
automatic flushing timer indicator
clockwise. This will activate the drain
valve and allow water to flow from the
humidifier reservoir to the drain.
7. Remove the humidifier from the
mounting.
8. Use running tap water to flush loose
minerals from the reservoir.
9. Carefully rub minerals off of the float,
heater and safety float switch.
NOTE:
Steel wool or other scouring
pads can be used on the
reservoir walls and other
parts.
10. Remove the valve arm by pulling out
the cotter pin attachment. Inspect the
arm for mineral buildup and deteriora-
tion.
NOTES: Replace the float valve when
it shows any signs of deterio-
ration.
The float valve should shut off
the water at 2-3/8 in. (60 mm).
11. Reset the water level:
CAUTION
Flooding Hazard.
Inadequate support of the float
arm can lead to valve seat damage
resulting in water leakage.
Support the float arm during adjust-
ment.
a.
Set the humidifier reservoir on a
level surface.
b.
Attach the water feed line and
allow the unit to fill until the float
valve shuts off the incoming flow
of water. The water level should
be between 2-1/4 in. (57 mm)
and 2-1/2 in. (64 mm) deep. If
water level is correct, skip to
step 12.
c.
Adjust the water level in small
increments. Raise the water level
by pushing down on the center of
the float arm. Lower the water
level by pressing the float down
with one hand and pulling up on
the center of the float arm with
the other hand.
TURN CLOCKWISE VERY SLOWLY
SLOT FOR COIN
COIN
M10552
