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8-1
6712FR Refrigerated Sampler
Section 8 Maintenance
This section describes how to maintain and troubleshoot your
6712FR sampler. If you think your unit requires repair, or if you
have questions concerning its operation or maintenance, contact
Teledyne Isco’s Technical Service Department:
Phone: (800) 228-4373
(402) 464-0231
FAX: (402) 465-3022
E-mail: IscoService@teledyne.com
8.1 Maintenance
Checklist
• Clean the condenser coil annually.
• Clean the refrigerator’s air filter every 3 months.
• Clean the refrigerator interior and exterior periodically.
• Inspect the pump tube for wear. Replace it if necessary.
• Clean the pump tubing housing.
• Change the suction line if necessary.
• Clean the bottles, suction line, strainer and pump tube.
• Check the humidity indicator.
• Check the controller’s internal battery status and
replace the battery every five years.
• If the keypad label has bubbles under it, the air inside
the controller has expanded. To release this pressure,
unscrew the flow meter cable or connector cap on the
back of the controller. Push down on the label to force
the air out, then re-tighten the cable connector or cap.
8.2 Cleaning Guidelines
8.2.1 Refrigerator The refrigerator’s exterior may be periodically cleaned with
soapy water using a sponge or nonmetallic brush to keep it free
of corrosive solutions, grease, oil, etc. After cleaning, it should be
wiped dry. Automotive wax may be applied to the interior and
exterior surfaces to make them easier to clean and more
resistant to corrosion. Do not direct a hose spray toward the
underside or into the front grill of the refrigerator. The vacuum
formed plastic refrigerator interior may also be cleaned with
soap and water as necessary.
Because the refrigerator uses a forced-air system, dust and
debris will collect on the condenser coil and surrounding areas. If
the refrigerator is not cleaned periodically, damage due to over-
heated components may result.