Troubleshooting – LABEC V-18 User Manual
Page 32

16/18 Manual
29
Troubleshooting
PROBLEM
Possible Cause
Solution
Power cord not connected to outlet
Plug instrument in
Dead Power outlet
Change to a different outlet
Wrong voltage setting
Switch to your local voltage or
call
an
authorized
service
engineer
Instrument
Inoperative
after
switch power on
Internal fuse blown or defective
electronic component
Call
an
authorized
service
engineer
Light beam blocked:
Holder misaligned
Check sample holder
Lamp is old or defective
Replace lamp
Lamp is off alignment
Refer
to
lamp
replacement
instructions in this manual
Instrument cannot
set
100%T
(0.000A)
Defective electronic component
Call
an
authorized
service
engineer
No sufficient warm up time
warm up at least 20 minutes
Use glass cuvette in Ultra-violet
range
Change to quartz cuvette
Significant temperature change
Lamp not adjusted properly
Check lamp if has been properly
installed.
Refer
to
lamp
replacement
instructions in this manual
Lamp old or defective
Replace with a new lamp
Unstable power supply
equip a manostat to make the
voltage stable
Instrument
drift
and noise
Defective or dirty detector or
defective electronic component
Call
an
authorized
service
engineer
Insufficient sample volume
Fill cuvette with more samples
Wrong wavelength setting
Failed to blank (0A/100%T)
Check analytical procedure and
wavelength setting.
Get dark current and calibrate
wavelength in utility menu by
press
【SET】.
Stray sample preparation vapors.
Prepare
sample
away
from
instrument.
Use
proper
ventilation
Bubbles or particles in solution
Check sample preparation and
analytical procedure
Incorrect readings
obtained
Instrument
out
of
electronic
calibration
Call
an
authorized
service
engineer