Teledyne 6712SR - Manual (Page 149)

8-1
6712SR Refrigerated Sampler
Section 8 Maintenance
This section describes how to maintain and troubleshoot your
6712SR 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: [email protected]
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 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 To keep the refrigerator’s exterior and interior free from cor-
rosive solutions, grease, oil, and other debris, clean it periodically
with soapy water using a sponge or nonmetallic brush. Do not
direct a hose spray toward the underside or into the front grille.
Wipe the refrigerator dry after cleaning. Apply a coat of fiber-
glass wax to the exterior surfaces to make them easier to clean
and to protect them from damage.
8.2.2 Controller When necessary, clean the controller with warm soapy water. To
prevent moisture damage, always cap the connectors at the back
of the controller tightly. Keep the controller power cable con-
nected, or replace the protective cap (shipped with the sampler)
over the power source connector.