Browse wiki
Jump to navigation
Jump to search
Engine Systems Inc. (ESI) began a 10CFR21 … Engine Systems Inc. (ESI) began a 10CFR21 evaluation on 9/18/2012 after an ESI test technician found a set screw in one of the oil bath stations of the temperature test fixture. After evaluating all components that were tested on the fixture, it was determined that this set screw is the same length, thread size and style as the set screw utilized in the EMD/Detroit temperature switches to lock the differential adjustment screw. The other components tested on the fixture did not contain such a set screw. Either an extra set screw was inside a temperature switch and it fell into the test fixture oil bath when the test technician removed the switch cover; or, the test technician dropped the set screw after removing it from a temperature switch to adjust the differential setting of the switch. If the latter occurred, then the potential exists that a temperature switch was shipped without the differential adjustment screw locked and therefore the switch settings could drift over-time from exposure to vibration on the EDG skid. ESI has identified the time period in which this could have occurred to be 4/2/2012 to 9/18/2012. The suspect temperature switches are EMD parts manufactured by Detroit Switch. These are located in the engine cooling water and lube oil systems for low standby lube oil temperature alarm, high coolant temperature alarm/shutdown and coolant immersion heater control applications.</br>The evaluation was concluded on 10/3/2012 and it was determined that this issue is a reportable defect as defined by 10CFR21. If a switch applied in the immersion heater control application experiences significant setpoint drift, it is possible that the standby temperatures of the lube oil and coolant systems may be degraded enough to affect the start time of the diesel generator.</br>All affected users should inspect the suspect switches for presence of the set screw at their earliest convenience. If the set screw is missing, the temperature switch should be returned to ESI for rework.itch should be returned to ESI for rework.
04:00:00, 2 April 2012 +
10:33:00, 5 October 2012 +
04:00:00, 2 April 2012 +
Engine Systems Inc. (ESI) began a 10CFR21 … Engine Systems Inc. (ESI) began a 10CFR21 evaluation on 9/18/2012 after an ESI test technician found a set screw in one of the oil bath stations of the temperature test fixture. After evaluating all components that were tested on the fixture, it was determined that this set screw is the same length, thread size and style as the set screw utilized in the EMD/Detroit temperature switches to lock the differential adjustment screw. The other components tested on the fixture did not contain such a set screw. Either an extra set screw was inside a temperature switch and it fell into the test fixture oil bath when the test technician removed the switch cover; or, the test technician dropped the set screw after removing it from a temperature switch to adjust the differential setting of the switch. If the latter occurred, then the potential exists that a temperature switch was shipped without the differential adjustment screw locked and therefore the switch settings could drift over-time from exposure to vibration on the EDG skid. ESI has identified the time period in which this could have occurred to be 4/2/2012 to 9/18/2012. The suspect temperature switches are EMD parts manufactured by Detroit Switch. These are located in the engine cooling water and lube oil systems for low standby lube oil temperature alarm, high coolant temperature alarm/shutdown and coolant immersion heater control applications.</br>The evaluation was concluded on 10/3/2012 and it was determined that this issue is a reportable defect as defined by 10CFR21. If a switch applied in the immersion heater control application experiences significant setpoint drift, it is possible that the standby temperatures of the lube oil and coolant systems may be degraded enough to affect the start time of the diesel generator.</br>All affected users should inspect the suspect switches for presence of the set screw at their earliest convenience. If the set screw is missing, the temperature switch should be returned to ESI for rework.itch should be returned to ESI for rework.
Has query"Has query" is a predefined property that represents meta information (in form of a <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Subobject">subobject</a>) about individual queries and is provided by <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Help:Special_properties">Semantic MediaWiki</a>.
00:00:00, 5 October 2012 +
Modification date"Modification date" is a predefined property that corresponds to the date of the last modification of a subject and is provided by <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Help:Special_properties">Semantic MediaWiki</a>.
22:24:07, 24 September 2017 +
10:33:00, 5 October 2012 +
186.273 d (4,470.55 hours, 26.61 weeks, 6.124 months) +
04:00:00, 2 April 2012 +
URL"URL" is a <a href="/Special:Types/URL" title="Special:Types/URL">type</a> and predefined property provided by <a rel="nofollow" class="external text" href="https://www.semantic-mediawiki.org/wiki/Help:Special_properties">Semantic MediaWiki</a> to represent URI/URL values.