Operational Checks And Maintenance; Cleaning, Disinfecting, And Decontaminating; Touch Panel; Decontamination Procedures - Xylem YSI 2500 User Manual

8 Operational Checks and Maintenance

8.1

Cleaning, Disinfecting, and Decontaminating

Proper precautionary lab practices should be followed when handling biological hazards.
Authorized cleaning and disinfecting agents include:
•
Sodium hypochlorite, 0.5% free available chlorine
•
Isopropanol, 70%
•
Ethanol, 70%
•
NaOH, 0.5N
Authorized rinsing agents include:
•
Deionized (DI) Water
•
Distilled Water
•
Purified Water
•
Water For Injection (WFI)—must be cooled

8.1.1 Touch Panel

Clean the touch panel with glass cleaner or isopropanol. Do not use sodium hypochlorite (bleach).

8.1.2 Decontamination Procedures

Wipe the instrument case with mild soap and water, do not immerse. If necessary, isopropanol may be used.
Remove and discard all tubing. New tubing is provided in the preventive maintenance kit. Empty the waste bottle and
wash with authorized disinfecting agent. Remove sample module, Sipper, Test Tube Holders/racks and probes according
to instructions.
Thoroughly clean with authorized disinfecting agent, then rinse with authorized rinsing agent (see Section 8.1). Remove
probes and discard enzyme membranes. Clean enzyme probes with isopropanol only, rinse with authorized rinsing agent
(see Section 8.1). Clean up all spills, then reassemble.
8.2

Daily Maintenance

8.2.1 Empty the Waste Bottle

Carefully pull the waste tube out of the hole in the waste bottle. Unscrew the lid from the waste bottle then lift the waste
bottle out of the bottle tray.
If the 2500 Analyzer is used with hazardous samples, dispose of the waste bottle contents in a manner suitable for
biohazardous waste. The YSI reagents used in the 2500 Analyzer are non-toxic and, unless otherwise specified, consist
of a phosphate salt buffer with small amounts of preservatives. Refer to reagent bottle labels and Safety Data Sheets for
more information.
Rinse and dry only the bottom of the waste bottle cap. Ensure the SMA connector is dry. If the SMA connector gets wet,
dry thoroughly with a lint-free tissue. For best results, let air dry for 2 hours.
Slide the waste bottle back into the bottle tray and screw the lid back onto the bottle. Insert the waste tube into the hole in
the bottle.

8.2.2 Check the Calibrator Bottle

If the fluid level is low or the bottle has been in the instrument longer than the working life (30 days), install a new bottle of
calibrator solution.
After installation, prime the calibrator for 60 seconds (see Section 4.7).
8-1