Chapter 4 Maintenance
HA-8190V 4-26
4.3 Washing and Cleaning
4.3.1 Discarding Liquid Waste
Discard liquid waste from the bottle for liquid waste before starting the first measurement every day. This instrument
drains liquid waste from two drain joints on the rear panel: “D1” for the optical unit and “D2” for liquid waste. During
measurements, regularly check the volume of liquid waste in the bottle and discard it before the bottle becomes full.
Prepare: Protective gloves
4.3.2 Automatically Washing the Tubes
Wash the tubes once a week. Inaccurate measurement results may be obtained if the tubes are contaminated. This
section describes how to wash the tubes automatically. Automatic tube washing starts with the tubes in which sample
flows and ends with washing solution drainage.
Prepare: Washing solution for tubes, sample tube (see “REFERENCE” above)
, washing rack (label: WASH) and
protective gloves
1 Access the maintenance screen.
a On the standby screen, touch , <7. Maintenance menu>
and <1. Tube wash> in that order.
• The screen shown on the right will appear.
Wear protective gloves to prevent exposure to pathogenic microbes.
Discard liquid waste and used protective gloves in accordance with local regulations for
biohazardous waste.
Wear protective gloves to prevent exposure to pathogenic microbes.
Discard liquid waste, used sample tubes and protective gloves in accordance with local
regulations for biohazardous waste.
REFERENCE:
Use the following sample tubes for automatic tube washing:
• About 15 mm diameter and 75 to 100 mm length
• About 13 mm diameter and 100 mm length
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