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7.0 Troubleshooting
CAUTION:
Disconnect power to the controller before opening front panel!
Troubleshooting and repair of a malfunctioning controller should only be attempted
by qualified personnel using caution to ensure safety and limit unnecessary further
damage. Contact the factory.
7.1 Error
Messages
HIGH ALARM
The summary screen will display an H at the right side of the bar graph if the copper
concentration rises above the high alarm set point.
Possible
Cause Corrective
Action
1. Overshooting set point
Reduce replenishment pump rate.
Increase
solution
flow
through
sensor.
Immerse
sensor
in
area
of
better
solution
movement.
Place
replenishment
line
closer
to
sensor.
2. Pump siphoning
Check all valves.
Re-route
tubing.
3. Output 1 in HAND mode
Go to H O A menu and put in AUTO mode.
LOW ALARM
The summary screen will display an L at the left side of the bar graph if the copper
concentration drops below the low alarm set point.
Possible
Cause Corrective
Action
1. Pump not working
Inspect and repair pump if necessary.
2. No replenishment
Refill chemical supply. Check pump valves.
3. Output 1 in OFF mode
Go to H O A menu and put in AUTO mode.
NO SAMPLE
No sample will be displayed if the measurement signals indicate excess air in the
sample. Perform a self test to verify that the control module passes, which indicates
that the problem is with the sensor (see section 5.2). If the control module fails the
self test, return it for repair.
