Hitachi CHROMASTER 5160, Instruction Manual

Page: 547 / 1022

4.3 Periodic Checks
No. Check Item
Frequency of
Check
Check Procedure Remarks
1 Drain tray Daily Check the drain tray, and wash it when
needed.
2 Lighting of lamp Daily Check that “Xe” is indicated on LEDs.
3 Liquid leakage Daily Visually check that liquid is not leaking
from the mobile phase bottle, tubing
and waste bottle.
4 Fluorescence
intensity check
Daily Press A/Z key, and check if FL
indication is zeroed.
5 Lifetime of lamp Monthly 1) Check lamp for service life by
energy check, or by cumulative
lamp turn-on time.
2) Check if baseline drifts considerably
(or if baseline fluctuates or noise
becomes high).
See 3.3
6 Leak sensor Monthly 1) Drip water onto the leak sensor and
confirm the occurrence of an error.
2) After confirmation, wipe off water.
See 4.2.5
7 Wavelength
accuracy
Yearly Check wavelength by using bright line
of Hg lamp at 254 nm.
See 4.2.4
NOTE
: First adjust the xenon lamp position (see 6.2.1 (3)), then
make an energy check of the xenon lamp and a
wavelength accuracy check using the Hg lamp.
Correct measurement results will not be obtained
unless the lamp position is adjusted.
4.3.1 Xe lamp energy check
Check the energy level of the Xe lamp at a wavelength of
254 nm (see section 3.3.7).
NOTE
: When the energy level of the Xe lamp has decreased
by 50% or more in comparison with the level at initial
use, the useful life of the lamp is considered to have
ended. The lamp life can be judged by the energy
level, or by baseline fluctuation (fluctuation of data
and/or noise).
4.3.2 Wavelength accuracy check using Hg lamp
Check the wavelength accuracy by means of the bright line of
the Hg lamp at 254 nm (see section 3.3.6).
“GOOD” will be indicated on the display when wavelength error
is within
±
3 nm; “FAIL” will be indicated if the error exceeds
±
3 nm.
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