Perform  this  step  according  to  company  regulations.  Proceed 
carefully  to  avoid  introducing  air  into  the  transformer.  Use  a 
bucket to collect oil. 
 
2.  Close the valve to which the Hydran 201Ti is mounted. 
3.  Slightly  loosen  the  bleed  screw  on  the  sensor  about  1/8  of  a  turn,  using  the 
supplied 5/32-in Allen key.  Refer to Figure 7-7 
4.  Remove carefully the CPU module.  Refer to section 7.3.2.1 
5.  Disconnect the sensor cable from Hydran 201 sensor connector. 
6.  Remove the  six 1/4-28  cap screws from the adaptor using the supplied  3/16-in 
Allen key. 
7.  Separate the adaptor with sensor from the Hydran 201Ti electronic enclosure. 
8.  Unscrew  the  sensor  adaptor  from  the  valve  using  an  adjustable  wrench.    It  is 
recommended not to use a wrench with jagged jaws as these may damage the 
sensor. 
9.  Use disposable paper to absorb the oil from the sensor. Allow the sensor to drip 
overnight on disposable absorbent paper. 
10. Dispose of the collected oil and paper according to the power utility regulations. 
11. Reassemble the sensor adaptor with the electronic enclosure, as well as the CPU 
module. 
12. Store the H201Ti unit.