Hach DR300, Service Manual

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Section 4 Inspection
4.1 Visual check
Examine the parts that follow for damage or scratches:
• Housing upper and lower part
• Seal
• Battery cover
• Display window
• Keypad
• Cell compartment
• Springs into the cell compartment
Replace scratched or damaged parts if necessary.
This inspection task is also available as a service video on HSO. HSO full access
requires login credentials. First log into HSO and afterwards click on
https://support.hach.com/app/answers/answer_view/a_id/1024331 . Select the desired
service video.
Note: Following hyperlink without being logged will end in a permission denied information
screen.
4.2 Clean the instrument
Clean the exterior of the instrument with a moist cloth and a mild soap solution and then
wipe the instrument dry as necessary.
4.3 Clean the cell compartment
C A U T I O N
Chemical exposure hazard. Obey laboratory safety procedures and wear all of the
personal protective equipment appropriate to the chemicals that are handled. Refer to the
current safety data sheets (MSDS/SDS) for safety protocols.
Items to collect:
• Distilled water
• Lint-free cloth
• Compressed air (oil free)
Based on the degree of contamination, clean the cell compartment:
• Use air to blow out dust.
• Use a lint-free cloth with a soft surface to wipe out dust and deposits.
• Moisten a lint-free soft cloth with distilled water. Use this damp cloth to wipe out
deposits.
This inspection task is also available as a service video on HSO. HSO full access
requires login credentials. First log into HSO and afterwards click on
https://support.hach.com/app/answers/answer_view/a_id/1024331 . Select the desired
service video.
Note: Following hyperlink without being logged will end in a permission denied information
screen.
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