HF scientific AccUView Wastewater UV %Transmission Monitor - Manual (Page 35)

10.0 Troubleshooting
10.1 AccUView Wastewater Fault Detection
The AccUView Wastewater performs continuous diagnostic monitoring. In the
AccUView Wastewater there are three levels of fault detection; warnings, errors and
failures. Any faults are displayed in a queue form in the bottom row of the LCD.
A
warning is simply a screen indication of a problem. No alarm is activated. If the
desiccant alarm is turned off and the desiccant becomes saturated, a screen warning of
DESC will appear.
An
error indicates a fault or a problem that usually can be corrected by the operator.
These errors consist of lamp low output (
LAMP), 4-20 mA loop open (MA), bad 100%T
calibration (
CAL Err), if desiccant alarm activated and replacement required (DESC). An
additional message will indicate that the ultrasonic transducer is not making contact or the
flow through has been removed (
CLN). If any of these conditions occurs, the alarm relay
will be activated and the 4-20 mA output will be sent to the ERLV setting. See section 7.2.
If any of these errors occur the instrument will still display readings, however the accuracy
is not known and the instruments readings should not be trusted.
A
failure is a system fault. This is NOT a problem that the operator can correct, and the
unit must be returned to the factory for service. These failures consist of failures in the
CPU, A/D, EEPROM or other devices internal to the instrument (
FAIL). If a failure
occurs, the instrument will not function properly and will display the word FAIL on the
lower row, the alarm relay will be activated and the 4-20 mA output will be sent to the
ERLV setting. See section 7.2 .
If any fault conditions occur, the message indicating the fault will be shown on the lower
row of the display.
At power-up for 30 minutes and at operating temperatures outside of our specifications,
the %T reading may flash. When this happens the reading may be outside of the stated
tolerance
10.2 System FAIL Message
Normally, this condition indicates that the instrument will require servicing. Contact either
the HF scientific Technical Service Department or the HF scientific Customer Service
Department.
HF scientific
3170 Metro Parkway
Fort Myers, Florida 33916-7597
Phone: (239) 337-2116
Fax: (239) 332-7643
Email: [email protected]
www.hfscientific.com
AccUView Wastewater (1/09) 29
Rev. 2.9