Instruction manual

112
ORP Low Alarm
This error message indicates the ORP reading is below the user-programmed maximum allowable
value.
Possible Causes Corrective Actions
Assuming you are feeding an oxidizer:
The programmed value is too close to the Go to the ORP Input Page and make sure ORP
set point. that the Low Alarm Limit is at least 50 mV
below the set point.
Chemical supply empty. Replenish chemical supply.
Faulty ORP electrode. Clean and calibrate the ORP electrode as
described in Section 7.4 above. If the
calibration fails, refer to ORP Calibration
Failure troubleshooting above.
Control direction set incorrectly. For oxidizer feed the control direction should
be “force higher”. Go to the ORP Output Page
and make sure that the correct control direction
is selected.
Faulty metering pump/brominator solenoid Repair or replace the metering pump/solenoid
valve. valve.
Blown fuse. Replace fuse (F2).
Faulty metering pump/solenoid valve wiring. Correct wiring.
Faulty ORP output relay. Replace the relay interface board.
Drum Level Low Alarm (one for each used)
This error message appears if either a level switch or level transmitter is putting out a signal that
indicates a low level of solution. This could mean that the level switch is either open or closed, or
that the level transmitter is indicating a volume below the user-programmed low alarm limit.
Possible Causes Corrective Actions
Low chemical level. Replenish chemical supply.
Level switch float is stuck. Clean level switch.
Faulty level switch. Remove level switch from drum and verify
that the switch opens and closes as the float is
moved up and down.
Incorrect setting of the low alarm limit Go to the Level Input Page and make sure that
for the level transmitter. the Low Alarm Limit is set for the correct
value.