DEL Clean Ozone Laundry Systems Installation & Operations Manual
2
2C.System Shut-Down
The following sequence of steps must be followed
for servicing or for storage.
1. Close the ozone isolation valve on the ozone supply
line.
2. Unplug the ozone generator.
SECTION 3
Maintenance and Troubleshooting
3A.System Electromechanical Overview
Refer to Figure 4 for component locations.
3A-1. Indicator Lights
1. Power: Green light indicates that power is
being supplied to the ozone generator (Cabinet
door must be closed). Generator will not start
until proper vacuum is established (CD-7GL-30
only) or enough water is in the washer (CD-7G-
11 only).
2. Ozone: Green light indicates that power is being
supplied to the high voltage Corona Discharge,
ozone producing circuits.
3. Vacuum (CD-7GL-30 only): Red light indicates
that vacuum is not being applied to the ozone
generator. When sufficient suction is being sup-
plied from the venturi injector during cold water
fill, the red light will turn off.
Note: The red light will be illuminated during
normal operation when cold water is not filling the
washer.
3A-2. Internal Components
1. Corona Discharge (CD) Module: The Generator
module consists of a High Voltage electrode
wrapped around a Teflon core inserted in a
ceramic insulating tube. The assembly is encased
in a thermally protected aluminum heat sink.
2. Power Supply: The fuse protected, self-
regulated, High Voltage High Frequency Power
Supply provides the ideal electrical signal for
efficient ozone production.
3. Air Compressor: Produces and supplies
compressed air to oxygen concentrator.
4. Oxygen Concentrator: Supplies concentrated,
dry, oxygen feed gas to the ozone generator.
5. Lo Limit Vacuum Switch (CD-7GL-30 only): If
the vacuum in the ozone output supply line falls
below 2 in. Hg the switch will open causing the
system to shut down.
6. High Sensitivity Pressure Switch (CD-7G-11
only): If the pressure in the actuating line goes
above 4 inches of water, the switch will close,
turning on the system.
3B. Preventive Maintenance Schedule
The DEL Clean™ Ozone Laundry System
requires very little maintenance beyond general
housekeeping practices.
DAILY:
1. Check ozone generator for proper operation.
2. Make sure green ozone light is illuminated during
cold water fill cycles.
3. Make sure flow meter is indicating proper air flow.
(~7 scfh).
MONTHLY (or as buildup occurs):
1. Clean intake screens.
2. Perform general cleaning of cabinet interior.
3. Visually inspect compressor filter element. Replace
as required.
4. Visual inspection of all plumbing, mechanical, and
wiring in system.
ANNUALLY:
1. Rebuild/replace ozone supply line check valve.
2. Replace oxygen supply line check valve.
3. Replace vacuum switch.
4. Verify oxygen output.
Every 8750 hours of operation:
1. Rebuild air compressor.
7. Ventilation Fan: Provides fresh air and removes
heat from the internal components.
8. Intake Screens: Easily removable screens keep
debris from entering the enclosure. See figure 3.
9. Time Delay Relay: Provides delayed signal to
shut down the Compressor/Oxygen system after
extended loss of vacuum. The potentiometer on
the relay adjusts delay from 1/2 minute to 10
minutes.
10. Dual Pole 25A Relay: Closes the circuit to the
Ozone system and/or triggers the Time Delay
Relay based on signal from the Vacuum switch.
11. Single Pole 30A Relay: Closes the circuit to
Compressor/Oxygen system based on a signal
from Time Delay Relay.
Figure 3: Intake Screen Replacement
