Shellab SWB30-2 - Manual (Page 12)

Microprocessor Control Water Baths 12
MAINTENANCE
Warning: Prior to any maintenance or service on this unit, disconnect the power cord from the power
supply and the drain water from the tank. Before reattaching the unit to its power supply, be
sure all volatile and flammable cleaners are evaporated and dry.
Avertissement: Avant d'effectuer toute maintenance ou entretien de cet appareil, débrancher le cordon
secteur de la source d'alimentation. Avant de reconnecter l'appareil sur le secteur,
s'assurer que tous les produits de nettoyage volatiles et inflammables sont complètement
évaporés.
Cleaning
To clean the water bath, perform the following steps:
1. Clean the water bath with mild soap and water solution. DO NOT USE chlorine-based bleaches, as
they will damage the tank interior. DO NOT USE spray cleaners that may contain solvents, which
could leak through openings and cracks and harm electrical part coatings. Failure to do this may
permanently damage the unit.
2. Rinse the water bath with clean water and wipe dry with a soft cloth. Stainless steel does not rust, but
foreign materials in the tank may rust or leave rust spots. If corrosion is seen, scrub out the stains
with a mild abrasive, never steel wool.
Heating and Water Level
The heating element of this bath does not contact the tank bottom, thus will not burn out if the tank is allowed
to run dry. However, a tank going dry during operation can strain interior surfaces so this should not be
allowed to occur. During operation a minimum of 5cm (two inches) of distilled water should be in the tank.
Check water bath water level frequently, add water as needed. Please note that at higher operating
temperatures, or in applications where a cover is not used, more frequent water level checking is required.
Test-tube Racks
If the water bath tank boils dry while containing plastic-ware, the plastic will melt. If you intend to use test-
tube racks that are wire or plastic-coated wire that may wear and expose metal, damage may occur to the
tank. It is recommended that all-plastic racks be used, and that the tank never be allowed to boil dry.
Section
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