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Section 7
Maintenance
Cleaning Methods
(continued)
Cleaning the Low
Water Level Sensor
Refilling the Tank
7-6
MaxQ 7000
Regardless of the approach utilized, ALWAYS follow the manufacturer's
directions and allow the chemicals to do the cleaning with MINIMAL
scrubbing. Always follow cleanings with a distilled water rinse. Air dry.
Materials Effective in Disinfecting:
• Glutaraldehyde
• Alcohol
Note The use and disposal of these chemicals may be regulated by your
local city codes. Consult those regulations before of disposing of these
materials.
Warning Extreme care must be taken when handling these materials.
Always work in an area with adequate ventilation. Use the precautions as
outlined in the Material Safety Data Sheet (MSDS) and the manufacturer's
instructions for the product being used. In addition, follow the personal
protection index found in the hazardous materials information system
(HMIS) section of the MSDS.
Note This information is intended as guidelines only and the manufacturer
makes no claim as to the suitability to any particular situation. Consult
your staff chemist to determine what would be best for your stainless steel
product and laboratory.
To keep the low-water level sensor operating properly, it must be inspected
weekly and cleaned every 2 weeks. Remove any scale build-up from the
stainless steel screw sensor by scrubbing it with a toothbrush while it is
immersed in water. The sensor is located behind the front splash baffle.
For best operation of the equipment, fill the unit with sterilized distilled
water or equivalent. The acceptable resistivity range is 50K to 1M ohms
(conductivity 1 to 20 micro Siemens). Do not use tap water; it will cause
mineral deposits and possible corrosion. Add a non-chlorine based
fungicide/ bactericide to the tank to increase the useful life of the bath
water.
Caution Using chlorinated tap water or additives that contain chlorine will
void the manufacturer's warranty. Similarly, high purity (deionized) water
that does not fall within a resistivity range of 50K to 1M ohm will void the
manufacturer's warranty. Contact Technical Services with any questions.
s
s
Thermo Scientific
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