Carrier 60 Installation And Service Instructions Manual

Also see for 60: Manual Service manual

Contents

Carrier 60 Installation And Service Instructions Manual Manual pdf 33 page image

Thermistor — The resistance at various temperatures forthe thermistor are given in Tables 12A and 12B.THERMISTOR REPLACEMENT, 30HK, HL UNITSThermistors are installed directly in fluid circuit. Drainfluid before removing.Proceed as follows (see Fig. 22):1. Remove and discard original thermistor and coupling.IMPORTANT: Do not diassemble new coupling. In-stall as received.2. Apply pipe sealant to 1 ⁄4 -in. NPT threads on replacementcoupling and install in place of original. Do not use a pack-ing nut to tighten coupling. This damages the ferrules (seeFig. 22).3. Insert thermistor T1 into coupling body to its full depth.Tighten packing nut finger tight to position ferrules, thentighten 1 1 ⁄4 turns more using a back-up wrench. Ferrulesare not attached to the sensor, which can be withdrawnfrom coupling for service.THERMISTOR REPLACEMENT, 30HW UNITS — To re-place the thermistor, follow these steps:1. Disconnect the existing thermistor from the S1 and S2terminals of the temperature controller (located in the con-trol section of the control box).2. Remove the thermistor from the well in the cooler leaving-fluid cacity.3. Insert the replacement thermistor into the thermistor well.4. Run thermistor wires into the control box and connect tothe S1 and S2 terminals of the temperature controller.Fig. 22 — Thermistor33