Regular inspection allows you to deter- mine the cleaning schedule best suited to your humidifier’s operating conditions.
The frequency for required maintenance will depend most upon the available water supply. In areas where hard water and high mineral content are prevalent, more frequent cleaning and servicing may be required.
At minimum, the humidifier will need to be cleaned at the beginning of every heat- ing season.
CLEANING PROCEDURES
Models HUMBBLBP,
HUMBBSBP, HUMBBLFP, and
HUMBBSFP
1. Turn off all electrical power to the |
humidifier and furnace or fan coil. |
2. Turn off the humidifier’s water |
supply. (See Fig. 4.) |
3. Disassemble the humidifier. |
• To disassemble a Model HUMBBSBP |
humidifier, gently pull the latch that |
secures the access panel. Remove the door |
and slide the evaporator pad assembly out |
of the unit. (See Fig. 8.) |
• To disassemble either a Model |
HUMBBLBP or Model HUMBBLFP |
humidifier, first remove the water supply |
connection to the solenoid valve. Next, |
remove the screw that holds the distribu- |
tor cover to the cabinet, and lift off the |
cover. Disconnect the drain line from the |
sump and loosen the thumbscrew(s) |
holding the sump to the cabinet. Remove |
the sump. Remove evaporator pad |
•If your humidifier is a Model HUMBBLBP or HUMBBLFP, wash the distributor cover, sump cover, and cabinet. Be sure the inlet ports are open and clean. Then, clean the sump with a solution of detergent and water.
5.Clean the internal components of your humidifier. Wash the distribu- tor pan with a mild detergent and warm water. Be sure holes and slots in the pan are clean and unob- structed. Wash the evaporator pad assembly in a detergent solution. If there are scale deposits on the pad, soak it in ordinary household vine- gar. If the pad is covered by a heavy deposit of scale, or if the local water supply has high sulfate or calcium content, replace the pad with a new one. Contact your dealer for replace- ment part.
6.Reassemble your humidifier.
7.Turn on the electrical power and water supplies. Refer to the startup procedures.
Model HUMBBWTR
1. | Turn off all electrical power to the |
| humidifier and furnace or fan coil. |
2. | Turn off the humidifier’s water |
| supply. (See Fig. 4.) |
3. | Drain water from the unit. Place a |
| pail underneath the drain plug |
| located on the bottom of the humid- |
| ifier cabinet. Lift the tab on the drain |
| plug and remove the plug. Allow |
| all water to drain from the unit. |
located on the float arm. Inspect the water opening in the valve body. If the opening is clogged, use a pin to remove the obstruction. Remove any accumulated deposits from the valve body and float arm.
7.Clean the water pan and unit cabi- net. Tilt the water pan and lift it from the unit. Wash the pan with warm, soapy water. Flex the pan to loosen accumulated scale. Wash the unit interior, removing any accumulated deposits. Inspect the drain line to in- sure that no blockage has occurred. Clean as required. (See Fig. 12.)
8.Reassemble your Model HUMBBWTR humidifier. Reinsert the water pan and drain plug. Ensure that the overflow tube is inserted into the hole at the bottom of the cabinet. Attach the float arm to the valve body by aligning the holes on both parts and reinserting the pin. Do not force or bend the pin. The float arm should have free
PIN
assembly. (See Fig. 6 or 7, according to |
the model you own.) |
• To disassemble a Model HUMBBSFP, |
the pad assembly can be removed from the |
side access door or the front cover. When |
removing the side door, lift the pad assem- |
bly up by holding the tabs and slide the |
assembly out. When removing the front |
| (See Fig. 12.) |
4. | Remove the front door from the |
| humidifier. Rotate the latches one- |
| half turn, then pull the door forward. |
5. | Remove and inspect the evaporator |
| pad assembly. Lift the bearing from |
| its retainer. (See Fig. 10.) Pull the |
| assembly away from the motor to |
| disengage the assembly shaft from |
FLOAT ARM
HIGHER LOWER
VALVE BODY
VALVE SEAT
cover on Model HUMBBSFP, disconnect |
the quick connects to the solenoid valve, |
unscrew the 4 screws to the front cover, |
snap loose the top and bottom catches, and |
lay the front cover aside. Once the front |
cover is off, lift the pad assembly up and |
twist it out. The pad assembly consists of 4 |
parts; the distributor pan, frame, sump, and |
the evaporator pad. Pull the distributor pan |
apart from the frame and the evaporator |
pad can be removed. Do not force the evap- |
orator pad in or out without removing the |
distributor pan, as this will distort the pad. |
4. Clean the humidifier’s external |
components. |
• If your humidifier is a Model |
HUMBBSBP humidifier, wash the access |
door and outlet drain portion of the cabi- |
net. Make sure the drain is open. |
the motor coupling. Remove assem- |
bly through the access opening. |
Inspect the evaporator pad. If the pad is heavily loaded with scale, or if the local water has a high sulfate content, replace the pad. Contact your dealer for replace- ment part.
NOTE: For best performance, the evap- orator pad should be replaced before each heating season.
6.Inspect the float assembly. Remove the float arm from the valve body by sliding out the pin and lifting off the float arm. (See Fig. 11.) Inspect the rubber valve seat located inside the float arm. If the seat appears to be nicked or worn, invert the seat or re- place it with the spare valve seat
Fig. 11—Float Arm Removal
HUMIDIFIER HOUSING |
|
WATER PAN |
|
OVERFLOW TUBE | DRAIN PLUG |
|
Fig. 12—Cleaning Water Pan and Unit Cabinet
9.Turn on electrical power supplies. Refer to startup procedures listed on page 2.