5800 Refrigerated Sampler Service Guide - Isco

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5800 Refrigerated Sampler Service Guide Section 3 Refrigeration System a. For 230V units, loosen the screw on the top hold-down tab to free the harness. Smooth Ribbed 115V 230V Top hold-down tab Ribbed Smooth Figure 3-14 Condenser fan connections 3. Remove the three lock nuts holding the fan assembly in place. Remove the fan assembly and vibration cushion. Lock nuts (3) Fan Drip tray Vibration cushion Figure 3-15 Removal/replacement of condenser fan 4. Place the new vibration cushion and fan assembly on the floor of the refrigeration module, aligning the holes in the base over the threaded mounting studs, and secure with the three lock nuts. 5. Route the fan harness around the drip tray and connect to the relay, taking care to connect the ribbed and smooth wires correctly, as shown in Figure 3-14. a. For 230V units, also route the harness wires around the right side of the terminal box and under the top hold-down tab. Tighten the screw. 6. Replace the terminal cover, taking care not to pinch or bind any of the wires. 3-18
5800 Refrigerated Sampler Service Guide Section 3 Refrigeration System 3.4.5 Module Replacement The refrigeration module is designed to be replaced as a complete unit. Unlike the other modules, the refrigeration module is voltage-specific. Be sure to order the replacement module and/or appropriate components for your AC mains power. Table 3-1 on page 3-1 contains part numbers for the refrigeration system and its components. For a complete listing of replacement parts, refer to Appendix B. Required Parts and Tools • Replacement refrigeration module • Nylon cable tie 489-0110-00 (For best results, soak in water for 1 hour prior to use.) • #2 & #3 Phillips screwdrivers • 15 /16" open wrench • 11 /32" open wrench • Wire cutters CAUTION Replacement of individual components may compromise the closed refrigerant system and the protective coatings. Removal 1. Cut the cable tie holding the power cord that runs through the refrigeration assembly. Cut cable tie Figure 3-16 Cut cable tie to free power cord (Full power cord length not depicted) 2. Remove the power cord from the refrigeration assembly. a. Slide the bushing sideways away from the refrigeration module until it is free. Use care to avoid bending the refrigeration tubing. b. Pull the power cord through the module. c. 230V/50 Hz Systems Only — Remove the AC Plug adapter from the end of the power cord by first cutting away the plastic heat shrink tubing. Then pull the adapter off, leaving just the North American 115V plug. 3-19
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