Sears 2500 - Manual (Page 10)

SUMMER SHUT DOWN:
Unplug transformer, close saddle valve, close bypass damper.
CLEAN PER ABOVE AND LEAVE RESERVOIR EMPTY. (As a
reminder, you may want to put a tag or sticker on the unit indi­
cating it has been shut down for the summer and will require
start up in the fall.)
FALL START UP: ' ~
Plug In transformer, open saddle valve, open bypass damper
and set humidistat to TEST position. Check for proper water
level and media wheel operation. Set humidistat according to
outdoor temperature as instructed on label.
SERVICING THE FLOAT
If the humidifier has been overflowing, the float valve button
may be worn. This button will wear much like a faucet washer.
To service:
1. Disengage quick disconnect.
2. Remove float from humidifier (pull out pivot pin).
3. Service float as shown in illustration at left.
4. Reinstall and test float.
service hints
Frequently what seems to be a major problem can be solved very easily. Listed below are the common concerns with any humidifier.
Check the simple things first. Remove the front panel and see if there is a crusty, white lime build-up on the media pad. The lime build­
up won’t hurt the humidifier, but will reduce its output. Low output might just mean your humidifier needs cleaning. While you’re
cheddng for lime build-up, look to see if the media wheel is turning. If not, check the power supply.
CONDITION WHAT TO CHECK WHAT TO DO
Too little
Humidity
1. Does humidifier need cleaning. 1. Clean humidifier and clean or replace media pad
and reservoir liner.
2. Is media wheel rotating? 2. a. Clean or replace media pad.
b. Check to see if transformer is properly plugged in.
c. Inspect main fuse or circuit breaker.
d. Check to see if media motor is rotating.
e. Humidistat setting too low, turn knob clockwise
to increase humidity.
3. Hurhidistat setting. 3. Set for proper outdoor temperature - lowest 24-hour
temperature.
4. Water to unit. 4. Turn on saddle valve and check for possible
obstruction in water tine. Is water supply connected?
5. Close fireplace damper, seal around doors and
windows.
5. Excessive air loss in house.
6. Is water level correct?
7. Is damper open?
6. Adjust float.
7. Slide damper out for winter operation.
Too much 1. Humidistat setting. 1. Turn knob counterclockwise to decrease humidity.
Humidity 2. Other humidification sources. 2. May be a temporary condition caused by moisture
from laundering, bathing, cooking, etc.
Humidifier 1. Is humidifier level? 1. Level unit.
Overflows 2. Float valve. 2. Service as shown in Fig. 23.
3. Air flow too high. 3. Adjust damper.
Humidifier 1. Mounting or plenum. 1. Tighten all fasteners.
Making Noise 2. Water pressure.
2, A slight sound is normal as water enters humidifier.
3. Media Wheel.
3. Check clearance of media wheel in reservoir.
Humidifier Motor This is a normal condition 1. Turn knob on humidistat to minimum setting.
Comes On When 1. If heating season is over. 2. This is a normal condition since humidistat is
Furnace Isn’t
Running
2. If heating season is just starting. controlling humidifier.
10