Sensor Repair - Wahl ST2200 User Manual

ST2200 Soldering Iron Tester User Manual
6.3

Sensor Repair

Sensors for the ST2200 are very sturdy and will give long life if not subjected to
excessive force during use. All sensors are repairable in the field. (with the
exception of model WST-01 (Discontinued.) See section 5.2 for repair and
tooling kits.
6.3.1 WST-02, WST-02B Repair, Band Replacement
All instruction reference Figure 4.
1. Remove two screws from bottom end of sensor, then turn over and remove two
screws from top of sensor.
2. Place sensor in holder per Steps A and B. Insert plug removal tool in sensor
strap and strike with small hammer until plug falls out of sensor body. It may
help to cut the bands to obtain clearance for the removal tool.
3. Repeat for other end of strap.
4. Remove old sensor strap.
5. Insert new strap per Step C and fasten with 2 screws on top of sensor. Arrow
point must face direction shown.
6. Bend bands over edge of housing per Step D. Hold firmly against side while
pushing plastic plug to bottom of hole.
7. Cut excess lead per Step E, then push cut lead into screw hole and install two
screws to secure per Step F.
6.3.2 WST-03 Repair, Wire Replacement
All instructions refer to Figure 4.
1. Remove the two screws that secure the Wire Mounting Posts.
2. Note the orientation of the Wire Mounting Posts.
3. Remove the Wire Mounting Posts and Wire Sensing element.
4. Install the replacement element with the same orientation as the one removed.
The Wire Mounting post marked with a "+" is to be positioned nearest to the "+"
identification on the sensor body. See Step G.
5. Carefully tighten the screws taking care not to damage the Wire Element. It
may be necessary to hold the posts with pliers to prevent movement when
tightening screws.
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