Re-Start Up Procedures:
1. Inspect the control panel and main power supply for condition and proper electrical connections.
Use of a lockout tag out procedure is highly recommended during inspection of the electrical and
mechanical components.
2. Aerator inspections, most situations where the aerobic system has set idle for a long period of time
(months or years) the aerator needs to be thoroughly inspected. Both the linear and rotary aerators have an
intake filter, the linear intake filter is under the top mounted cover and can be serviced by removing a
single screw in the top of the housing. The rotary compressor air filters are easily accessible for service by
removing the top
plate from the filter body and removing them from the filter body at the intake on top of
the aerator. Check for missing felts that must be on the filter body to prevent dust and debris from
entering the intake and plugging the internal muffler felt. Our rotary vane compressor has two end caps,
these end caps are sealed with O-rings and hold a muffler on each end cap.Now make a visual inspection to
the O-ring for cracks and signs of air leaks and replace and replace them if necessary. These mufflers may
be plugged or deteriorated and may need replacement.
3. If a rotary vane aerator has sat idle for several months the motor may hum for a when power is first
turned on and then trip the breaker, if this happens (make electrical power to the system is turned off)
place a medium size screwdriver through the ventilation grill on the end of the motor and gently attempt to
rotate the motor. This must be done before electrical power is turned on.
4. Proper airflow is crucial to the operation of your Clearstream therefore an inspection visual or audible
means for the airflow to the aeration chamber is a must. Use of a Clearstream model A2800 Air Tester is
recommended. Clearstream has a diffuser system that can get plugged when not in use for extended
periods. During normal operation, the diffuser system has a constant air flow which keeps the aerobic
bacteria supplied with oxygen, but once the system is shut down the bacteria will plug the diffuser.
Replacement of the diffuser speeds up return of aerobic bacteria to the Clearstream and prevents damage to
the aerator from back pressure and overheating.
5. Have all tanks completely pumped out and immediately start refilling through trash tank until the
treatment plant is full to the outlet weir.
6. Power up the control panel and observe aerator for proper audible condition. All systems vary, but the
motor may sound overloaded for a few seconds until the water is pushed out of the line and the
Clearstream is operating properly. Inspect the alarms
the aerator alarm and the high-water alarm. Both the visual and audible devices for each of these
conditions should be in working order.
7. Your Clearstream is now ready for use. If you have not read the operating instructions, please do so
before proceeding.
NCD 1000-1500 SERIES OWNERS MANUAL PAGE 8
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