MODEL YB8 MAINTENANCE
April 1999/Manning Environmental Inc.
Page C-11
Troubleshooting
Troubleshooting instructions are based on a logical sequence of events leading to a malfunction. If trouble
occurs, look for the simplest solution first such as whether the power supply is connected. Are any
connections loose or wires broken? Review the problem, normal operating procedures, and then check one
possibility at a time starting with the easiest t o verify. If the malfunction continues, call t he Manning
Environmental, Inc. Service Department at 1-800-863-9337. We can often assist over the phone. We can
also advise on whether or not certain repairs are best done in the field or in our factory.
Note: Follow instructions in the Maintenance section when removing the controller (see page 3-4)
Problem Possible Cause Remedy
System Non- Circuit Breaker Turn on/off switch back to on.
Responsive Tripped
Loose Connection Check connectors on circuit board. Tighten if necessary.
Controller Lock- Push the hard RESET button located on the lower left side
Up of the processor board. Note: Re-enter configuration data
Controller Failure Remove and replace controller.
(*99) and stepper motor data (*90).
Works Faulty Wiring Check wiring, starting with power connections.
Inconsistently
Controller Failing Remove and replace controller or failed board.
Weak Draw Intake Hose Check hose for pinch or damage. Replace if damaged.
Pinched
Hose or Line Flush with water to clear clog.
Clogged
Air Leak Check pump tubing for damage.
Peristaltic Pump Check pump for proper operation including: Drive belt is
Failing intact, Drive pulleys are rotating, Rollers are rotating freely,
Impediment in pump tubing, Motor not humming.
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