Chapter 4 Routine Maintenance
Your spectrophotometer is durable and reliable, so routine maintenance is minimal. This section includes
complete instructions for:
•
Routine care, cleaning and maintenance of the instrument and cells
•
Replacing the tungsten lamp
•
Changing the fuse and voltage setting
This section also includes a list of replacement parts and accessories.
WARNING
Operating the instrument with the cover off exposes the operator to potentially dangerous
voltages and ultraviolet (UV) radiation. Therefore, it is recommended that only authorized
service representatives perform procedures requiring removal of the instrument cover and
replacement of electrical components. To protect both yourself and the instrument, be
sure to contact an authorized service representative to perform any service procedure not
listed in this section.
Routine care
Routine care for your spectrophotometer does not require a lot of time. To help minimize maintenance
time and to increase the life and performance of your instrument, please follow these guidelines:
•
To prevent dust from accumulating on and in the instrument, always replace the dust cover when the
instrument is not turned on. The dust cover, supplied with the instrument, is resistant to most aqueous
solutions.
•
Do not use or store the instrument in a corrosive environment.
•
Gently wipe the outside of the instrument with a soft cloth to remove any dust or spills. Water,
isopropyl alcohol and other common laboratory-cleaning agents may be used if necessary.
•
Always clean up spills to prevent or minimize damage to the instrument. If concentrated acids or
bases, or any hydrocarbon materials, are spilled on the instrument, be sure to clean up the affected
area
immediately
.
•
Use water, alcohol or other common laboratory-cleaning agents to clean the keyboard. It is
recommended that you clean spills off the keyboard as soon as they occur.
Cleaning
Cleaning and maintenance of cells
Cleaning of cells both inside and out is important not only because any contaminating material may
absorb light, but also because material within the cell may react chemically with subsequent reagents or
standards introduced into the cell. Cleaning methods depend to some extent on the nature of the
contaminating material. Sodium (or ammonium) hydroxide and dilute hydrochloric acid may be used to
remove some acidic and basic contaminants, respectively. Clorox® (undiluted or 1:1) is very effective in
removing proteinaceous and bacterial contaminants. You may also use Cell Cleaning Solution
(332260-169) to clean your cells.
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