13
3.1.2 Yearly inspection
Yearly inspection
Inspection item
Inspection standard
Measures against
abnormality
Mercury collector
tube
There shall be no dirt on the
quartz tube or no discoloration of
the quartz wool.
Replacement of mercury
collector tube
Absorption cell
There shall be no dirt.
Disassembling cleaning or
replacement of absorption
cell
Flow rate
There shall not be a variation of
0.02 L/min. or more in the flow
rate.
Needle cleaning or pump
replacement
Detector output
(Ref)
Shall be 4+/-0.5 V on the
maintenance screen of WA5Win.
Wiping of dirt on lamp, lens,
etc.
Adjustment of optical system.
Detector output
(Sig1, Sig2)
Shall be 4+/-0.5 V on the
maintenance screen of WA5Win.
Cleaning or replacement of
absorption cell unit. Wiping of
dirt on cell window and
phototube.
Activated carbon
filter
There shall be no breakage or
discoloration.
Replacement
Air pump
There shall be no abnormal
sound. It shall be possible to
adjust the flow rate to 0.5 L/min.
at the time of the instrument
check.
Replacement
Electronic cooler
Shall be the room temperature
minus 8
°
C or less.
Repair
