07-00283 C 12-02 Copyright 1999, Dri-Eaz Products, Inc.
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3.
Start the unit.
Turn the switch to "On" to start the unit.
Look through the process outlet grills to check the rotor
rotation. The rotor should start turning clockwise as you
view it through the process outlet grills. If the unit does
not start, refer to the Troubleshooting section.
MAINTENANCE
The DriTec Desiccant requires very little regular mainte-
nance. Check the following points every 30 days when using
the unit on a regular basis or as needed.
Clean the Air Filter
Remove the filter from the filter shroud by inserting a
finger or screwdriver into the access hole at the bottom of
the filter shroud and pushing up. To clean the filter use a
light vacuum, or wash with water and mild detergent. Spray
directly against the foam in the direction of the air flow.
Begin at the top of the filter and work down. Allow the filter
to drain before reinstalling it in the filter shroud.
Check Reactivation Outlet Temperature
After the unit has been operating for 30 minutes, the
temperature at the outlet of the reactivation air stream should
be about 30°F (17°C) higher than the temperature of the
room air. Check this outlet temperature with a thermometer.
If the outlet temperature varies significantly from the above,
see the section on Troubleshooting.
Warning!
Always
ensure that correct voltage is used. Failure to do so
could cause an electrical shock or fire hazard.
Check the Rotor Air Seals
1. Turn off all power to the unit (see ELECTRICAL
DANGER note.) Unscrew the four fasteners holding on the
front panel and remove to expose the front side of the desic-
cant rotor.
2. (DriTec 325 only.) Remove the two control panel
screws and let the panel hang loosely. It is not necessary to
disconnect any wires.
3. Place a 5" high block of wood under the front edge of
unit for support. Remove the cover screws and lift the cover
straight up, being careful not to damage any foam edge seal.
4. Air flow through the rotor is controlled by a system of
air seals. Inspect the air seals for any signs of abrasion or
cuts. Be sure the outer surface of the seals are smooth. If the
seals must be replaced, please contact the Dri-Eaz Service
Department.
Check the Rotor
1. With the cover removed, pull back the tensioner to
loosen the drive belt. Check the drive belt for signs of wear.
The belt should be flexible. Replace the belt if it is stiff or
cracked.
2. Remove the belt from the drive sprocket on the motor.
Turn the rotor by hand and make sure it turns smoothly,
though with some drag. If the rotor does not turn smoothly,
the seals may be worn.
3. Check the rotor for passages clogged by dirt or dust.
To inspect the passages, hold a 60 watt bulb behind the ro-
tor. If the passages are clear, the light from the lamp should
shine through the rotor. If any part of the rotor is plugged
you will see a dark area. Inspect and clean the rotor once per
year when operating under normal conditions, and more if
the unit is operating in a dusty environment. Despite the in-
line filter the rotor can pick up dirt and dust, resulting in
reduced water extraction.
4. Clean the rotor if it seems dirty or clogged. Use a vac-
uum with a soft-bristled dusting brush attachment. Vacuum
both surfaces of the rotor.
5. If you cannot clear the rotor using the vacuum, you
may use compressed air to help the process. Do this careful-
ly so that you do not damage the rotor. The compressed air
should be dry and free of oil. Do not use a pressure higher
than 30 PSIG. Use compressed air on one side of the rotor
and the vacuum on the other side. Do not hold the com-
pressed air closer than 12 inches from the face of the rotor.
Do not wash the rotor with any solvent. Improper cleaning
can permanently damage the rotor.
6. If the rotor is still is still plugged, please call the Dri-
Eaz Service Department.
Maintenance Quick Reference Summary
Air Filter
Inspect and clean as necessary
Reactivation Outlet Temperature
Should be approximately 30°F (17°C) higher than the
ambient air temperature in the room.
Seals
Check for excessive wear
Rotor
Fuse Diagram for DriTec 325 only.
The DriTec 150 does not include a fuse.
Warning
Replacement fuses should have the same amperage, max-
imum voltage, and interrupt capacity ratings.
