HF scientific AccUView UV %Transmission Monitor - Manual (Page 34)

10.3 Diagnostic Chart
Symptom Cause Cure
Lower display shows MA 4-20 mA loop open Check wiring. See sections 3.3.4
and 7.2
Lower display shows DESC Desiccant pouch bad Change desiccant pouch. See
section 9.2
Lower display shows LAMP Lamp failed Replace lamp. Refer to section 9.3
Lower display shows FLOW
(if flow option installed) Sample flow has stopped Restore flow.
Lower display shows CLN Ultrasonic cleaning failure Refer to section 8.2
Lower display shows CAL Err
after a calibration. 100% T Calibration failure Refer to section 5.2
Lower display shows TECO Temperature Compensation
Calibration failed
Contact HF scientific service dept.
for more information.
Lower display shows FAIL Major system fault Refer to section 10.1 & 10.2
Readings are lower than expected (1) Bubbles in solution
(2) Condensate or leaky
cuvette
(3) Flow through cuvette
dirty
Instrument out of calibration
(1)Ensure that the drain vent is
open and is not obstructed.
See section 3.2.2.
(2)Apply backpressure. See section
3.2 and figure 4
(3) For sever cases of bubbles a
stilling chamber is available.
Call HF scientific.
Part# 20106
Check flow through cuvette for
condensate or leaks.
Clean cuvette. See section 9.1
Recalibrate. Refer to section 5
Readings are erratic (1) Bubbles in solution
(2) Debris in flow through (1) See above
(2) Clean debris from cuvette
Readings are lower than expected Instrument out of calibration Recalibrate. Refer to section 5
10.4 Technical and Customer Assistance
If for any reason assistance is needed regarding this instrument please do not hesitate to
contact either the HF scientific Technical Service Department or the HF scientific
Customer Service Department. Contact information is shown on section 10.2.
AccUView (6/10)
Rev. 4.0 29