Hitachi CHROMASTER 5160, Instruction Manual

Page: 929 / 1022

4.2 Periodic Maintenance
Estimated periodic maintenance is based on full operation of 8
hours daily and 20 days monthly with standard assay.
No. Check Item Frequency Procedure
1 Liquid leak check Daily Refer to 4.2.1
2 Washing the flow path As required Refer to 4.2.2
3 Cleaning As required Refer to 4.2.3
4 Waste solution tube Daily Refer to 4.2.4
5 Liquid leak sensor Monthly Refer to 4.2.5
6 Drain tray As required Refer to 4.2.6
4.2.1 Liquid Leak Check
Visually check that liquid is not leaking through any tube.
4.2.2 Washing the Flow Path
The flow path should be washed on a periodic basis. Bubbles
will be formed if the flow path between the syringe and needle is
contaminated; these bubbles will adversely affect the analytical
reproducibility of the system.
(1) When using an aqueous detergent
At the end of measurement, wash the flow path with distilled
water. If contamination is heavy, fill the syringe with
detergent and leave it overnight. After cleaning the syringe,
rinse it with distilled water. If the instrument will not be
used for a week or loner, wash the flow path adequately
with distilled water and keep the syringe filled with distilled
water. In particular, the syringe and sample loop should be
washed carefully to remove contaminants. And prevent the
inside of flow path from drying out. If the flow path dries
out though contaminated, decontamination may become
impossible.
Table 4-1 Recommended Neutral Detergents
Part No.
Detergent
(brand) Concentratio
n
Precaution
S264000 Extran® 20 to 50 times Dilute the detergent with ion-
exchanged water or distilled
water when using phosphorus-
free neutral detergent (Extran
MA03, etc.).
775-1365 Rinsing liquid Not diluted
4 - 8