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Section 11 Part Replacement
11-2
Reciprocal Shaking Water Baths
Replace Optical Sensor
Replace Temperature Sensor
Replace Heater
Replace "HI Limit" Thermostat
1. Remove connector J303 from CPU board.
2. Remove 2 screws holding optical sensor to bracket. Remove sensor.
3. Reverse above procedure to install new sensor.
1. Remove tray from bath.
2. Remove connector J302 from CPU board.
3. Remove temperature sensor fitting from inside bath pan, by first holding small nut
on fitting firmly with a wrench. Then remove large fitting piece with a second
wrench.
4. Remove rubber grommet from temperature sensor.
5. Carefully slide sensor through the control housing and remove.
6. Reverse above procedure to install new temperature sensor.
7. Recalibrate new temperature sensor. See Temperature Calibration.
1. From inside control housing, remove 2 nuts and disconnect wires from heater
leads.
2. Remove two hex nuts from heater ends using a 13/16"socket and remove heater
3. Reverse above procedure to install new heater.
1. Remove four leads from thermostat terminals.
2. Remove two screws from thermostat bracket and remove bracket
3. Carefully tilt bath on its side.
4. Remove eight screws from bottom plate and remove plate.
5. Remove insulation from bottom of pan and between pan and control panel wall.
6. Loosen two nuts from thermostat bulb bracket.
7. Carefully remove thermostat from control housing by sliding bulb through hole in
control panel wall.
8. Reverse above procedure to install new Hi Limit thermostat. Use extreme care
when installing new thermostat. A sharp bend in the thermostat capillary will crimp
off flow of hydraulic fluid.
Thermo Scientific
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