Field Controls TM-2000 - Manual (Page 6)

Page 6
MAINTENANCE
P ERIODIC
The TM-2000 humidifier requires little maintenance, however it is important to follow these recommendations.
1. Water quality varies considerably across the country. The water inlet filter, and spray atomizing nozzle may become
clogged during operation. The frequency of this occurrence will depend on the quality of your water. The spray
characteristics should be checked periodically to verify that a fine mist is being produced. During a normal operating
cycle, remove the remote bracket (leave the speed nuts in place on the plenum). Verify that a fine mist is being
produced when the TM-2000 has been activated by the warm air flow.
2. If the spray is weak or comes out in a narrow stream, it is an indication that the nozzle and inlet filter must be
replaced. Neither of these parts can be cleaned without causing damage which will impair humidifier operation. Use
only genuine Field Controls replacement parts. Replace the nozzle and inlet filter as often as necessary.
CAUTION: Close the saddle valve completely and disconnect the transformer from the receptacle prior to any
service to the TM-2000.
3. To replace the nozzle, unscrew it from the nozzle adapter by securely holding the nozzle adapter with one wrench and
loosen the nozzle with a separate wrench. Replace with a new nozzle using Teflon tape or other pipe thread sealant
on the male pipe threads.
4. Replace the remote bracket onto the plenum as it had originally been attached.
5. To replace the water inlet filter, it is necessary to first remove the water supply tube from the water inlet fitting. Screw
a small screw into the existing filter, and then pull the screw outward. This will pull out the filter element, which will
allow the replacement with a new element. Then re-attach the water supply tube to the water inlet fitting.
6. Open the saddle valve completely and place the "ON/OFF" switch in the "ON" position.
S EASONAL
At the conclusion of the heating season, the following steps should be taken to ensure proper performance when
humidification is desired once again.
1. Close the saddle valve completely.
2. Place the "ON/OFF" switch in the "OFF" position and disconnect the transformer from the receptacle.
3. Disconnect and drain the plastic tubing from the saddle valve to the water inlet, and from the water outlet to the
remote bracket (nozzle inlet).
4. Check the drain tube connected to the remote bracket to ensure that it is empty.
5. Remove the remote nozzle bracket from the plenum, and replace the nozzle following the previously described
procedure.
6. Replace the water inlet filter following the previously described procedure.
7. Remount the remote bracket to the plenum and re-connect the plastic tubing, while leaving the saddle valve closed,
and transformer disconnected.
TROUBLESHOOTING GUIDE
Refer to the previous sections for optional suggestions and control components which may be required. The components
include a Humidistat and an Air Booster Activator. The Humidistat will allow power supply to the TM-2000 only when there
is a call for humidity. The TM-2000 will still be activated only by the warm air flow. The Air Booster Activator recognizes
when the blower is on and supplies power to the TM-2000 only during this time. This can be used to prevent TM-2000
operation when the blower is off.
1. TM-2000 will not come on.
a. Check electrical receptacle for power.
b. Check air flow temperature within the plenum. If not 120
o
F, adjust furnace blower "ON" to a higher temperature,
or attempt to locate a position which will satisfy the temperature requirement.
2. TM-2000 comes on after furnace blower shuts off or TM-2000 remains on after blower shuts off.
a. Install an optional Air Booster Activator to prevent TM-2000 operation when the blower is off.
b. The furnace blower controls can be adjusted to ensure that the blower operates for a longer period of time, or the
TM-2000 can be electrically interconnected to the furnace blower motor circuit.
3. A light dust appears on furniture, registers, etc.
a. Some areas have high calcium, and mineral content in the water supply. The dust created as the water
evaporates will not adversely affect any household effects. The problem can be minimized by installing an in-line
water filter in the water supply line. The filter should be of the type which uses replaceable cartridges. Check your
local hardware store.