NO.
|
Fault
|
Reason
|
Solve
|
1
|
No laser output
|
Laser Power supply problems
|
Check both ends of the laser tube metal clip is
off; check laser power input and output lines
|
2
|
Laser output
&testing are
not stable
|
Power supply voltage is too low, or
voltage instability
|
Plus AC power supply, stable power output
|
3
|
Optical spot is not round
|
Optical element offset
|
Adjust optical path
|
4
|
No dispersion medium in sample cell
|
Put dispersion into windows cell. Then check
|
5
|
Background
1st level signal
is too strong
|
Optical alignment shifted
|
open the cover, then lightly
adjust detector
|
6
|
Individual signal beating is not stable when testing
|
Outside interference,
loose connectors,
earth wire and power wire are twining
|
1) The other appliances than 1 meter away
2)Check the grounding reliability and ground wire
position
3)check if connect between the signal cable and
plug-in
|
7
|
Background signal discontinuities
|
Probe connectors loose
|
Check probe connectors
|
8
|
NO Ultrasonic
|
Keyboard/button failure
Fuse off,
Electrical components burn
|
1)Checking Ultrasonic button,
2)Change ultrasonic fuse
3)Check if electrical components working
|
9
|
NO Stir
|
Keyboard failure,
Fuse off,
Electrical components burn
|
1)Checking Ultrasonic button,
2)Change ultrasonic fuse
3)Check if electrical components/power supply wire
working
|
10
|
No Circulation or not smooth
|
Gas is not drained
|
Intermittent start circulating pump, remove the pump
air
|
11
|
Accumulation of particles in the pump
|
Turn on the pump housing clean and reset the pump
chamber
|
12
|
Circulation pump not working,
or big noise
|
Head wear serious, leading to increased friction during rotation
|
Replace the new pump head, regular wash cycle
pump
|
13
|
No Communication
|
Communication port, communication cable fault
|
Check the communication cable and plug, or
replace communication port
|
14
|
Background signal too high
|
Sample cell pollution
|
Cleaning sample cell according to manual
|
15
|
No Concentration shows when test
|
No good test for background
Sample cell pollution
|
Re-test background
Cleaning sample cell according to manual
|
16
|
Test results are not stable
|
Preheating time is too short
|
Extend preheating time to 15 minutes
|
Power and voltage are fluctuation
|
Plus AC to stable
|
Sample dispersion is not sufficient;
low concentration
|
Extended ultrasonic time, Plus dispersant;
Appropriate to increase the concentration
|
Signal interference
|
Exclude interference source; check the ground
|
17
|
Low accuracy for testing results
|
Wrong gears
|
check if gears is match with measurement range
|
Samples cell position shift
|
Re-calibration sample cell position
|
Sample distribution over the range
|
Choose the right gear
|
18
|
Laser output
becomes weak,
Spot is not
round
|
Too much dust particles in the optical parts
|
Clean optical heads according to the manual
|