[Q&A Question 127] 2017.05.07
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This post was last edited by 955559 on 2017-7-21 22:59. [Q&A Question 127] On 2017.05.07, describe the steps for replacing the filter in the compressor light oil station The reference answers will be visible after responding; scoring is awarded by identifying the key points. (Unless otherwise specified, all questions and answers are based on hydrogenation units.) ) ⑴ When the differential pressure of the lubricating oil filter exceeds the specified value, the filter element should be switched out and cleaned promptly. ⑵First, open the vent valve of the spare filter, then open the connection valve between the two filters or slightly turn the filter switching handle to fill them with oil. ⑶ When oil is discharged from the vent valve, it indicates that the interior is filled with oil; close the vent valve. ⑷Rotate the switch handle to the correct position; once the switching is complete, deactivate the filter to proceed with disassembly and cleaning. Scoring criteria: 2 Wealth points for incorrect responses; *incomplete* answers earn 3–8 points. 10 Wealth points are given for correct answers accompanied by detailed explanations; responses that are correct but lack sufficient details receive 15–20 Wealth points. Please score according to these criteria. 2017 Q&A Summary Thread (updates have begun) http://bbs.hcbbs.com/thread-1657793-1-1.html 2017 Daily Question Summary Thread (updates have begun) http://bbs.hcbbs.com/thread-1657794-1-1.html 2016 Q&A Summary Thread (updates completed) http://bbs.hcbbs.com/thread-1597792-1-1.html
First, activate the backup filter, then disconnect the filter that needs to be repaired.
1) Inspect the spare filter before cutting. 2) Close the drain valve and open the vent valve. 3) Slowly open the oil filling connection valve and fill the spare filter with oil at a low flow rate, paying attention to the sight glass of the vent valve. 4) When oil can be seen flowing through the sight glass, close the vent valve and the oil filling connection valve. 5) Slowly turn the switching handle to the spare filter, paying attention to changes in oil pressure and ensuring that the valve is in place. 6) Slowly drain the oil from the filter that is no longer in use and monitor the oil pressure before proceeding with maintenance. Pay special attention to changes in oil pressure during switching; the switch valve must be moved into position.
First, open the filter connection valve to fill it with oil; then open the vent valve and observe through the view window as oil is released, after which close the vent valve. Slowly switch the directional valve to the backup filter.
Disengage the shutdown interlock, pump oil into the backup filter, switch the filter selector lever, pay attention to changes in oil pressure, drain the oil from the original filter, and clean it before replacing it
1) Inspect the spare filter before cutting. 2) Close the drain valve and open the vent valve. 3) Slowly open the oil filling connection valve and fill the spare filter with oil at a low flow rate, paying attention to the sight glass of the vent valve. 4) When oil can be seen flowing through the sight glass, close the vent valve and the oil filling connection valve. 5) Slowly turn the switching handle to the spare filter, paying attention to changes in oil pressure and ensuring that the valve is in place. 6) Slowly drain the oil from the filter that is no longer in use and monitor the oil pressure before proceeding with maintenance. Pay special attention to changes in oil pressure during switching; the switch valve must be moved into position.
⑴ When the differential pressure of the lubricating oil filter exceeds the specified value, the filter element should be switched out and cleaned promptly. ⑵First, open the vent valve of the spare filter, then open the connection valve between the two filters or slightly turn the filter switching handle to fill them with oil. ⑶ When oil is discharged from the vent valve, it indicates that the interior is filled with oil; close the vent valve. ⑷Rotate the switch handle to the correct position; once the switching is complete, deactivate the filter to proceed with disassembly and cleaning.
First, open the connection valve; once the spare oil filter is filled with oil, close the top exhaust valve. Keep the connection valve open to switch the oil pressure
First, activate the backup filter, then disconnect the filter that needs to be repaired.
Open the backup filter drain valve, slightly open the oil inlet valve to fill the filter with oil; close the drain valve once oil is present, and then move the switch handle to switch the filter