· Inside the unit there are parts that can become contaminated by oils from the skin. These parts should not be directly handled. When lifting out the elastomeric connectors and the main switch pad, it is recommended that tweezers or sterile gloves be used. 3. Remove the two case bottom screws, located at the LCD-end of the unit and separate the bottom case from the top case. 4. Removing any of the interior components of the unit requires removing the Main PCA. To remove the Main PCA, place the

51, 52, 53, 54 Series II Service Manual Service Centers To contact Fluke, order parts, or locate a Fluke service center, call one of the following telephone numbers: USA: 1-888-99-FLUKE (1-888-993-5853) Canada: 1-800-36-FLUKE (1-800-363-5853) Europe: +31 402-678-200 Japan: +81-3-3434-0181 Singapore: +65-738-5655 Anywhere in the world: +1-425-446-5500 Or, visit Fluke’s Web site at International Symbols Table 1 identifies the international electrical symbols used in this manual. Table 1. Internati

Short (or apply 0 mV) to the copper wires at the Calibrator. 5. Verify the thermometer reads 0.0 oC ± 0.3 oC. 6. If this test fails, reposition the thermocouple wires and Mercury thermometer to the same depth in the ice bath, and repeat steps 3-5. If the test continues to fail, perform the calibration procedure, located after this procedure. 7. Remove the short applied in step 4. 8. Using Table 3, steps 2-5, obtain an output from the Calibrator equal to the values in the “Input Voltage (mV DC)”

2. Place the thermocouple in a known, stable temperature environment (such as an ice bath, lag bath, or a dry well calibrator). 3. Allow the readings to stabilize. 4. In SETUP, change the offset until the primary display reading matches the bath temperature. (See "Changing Setup Options” in the 51/52 Series II Users Manual, and the 53/54 Series II Users Manual.) 51, 52, 53, 54 Series II Service Manual Basic Maintenance Basic maintenance required by the thermometer is discussed in this section. C