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Public works reports hydro gearbox returned for repairs; alignment and return-to-service pending
Summary
Public Works reported that a newly installed gearbox on a hydro unit began leaking and has been sent back to the vendor for seal and gear work. Staff expect the unit back the following Monday and will schedule a cold alignment; they also noted a vendor credit of $2,000 on the repair.
Mount Pleasant Public Works staff updated the council on problems and repair progress for a hydro unit gearbox at the Sept. 30 meeting.
What staff reported: The gearbox developed oil leaks and vibration problems during initial operation. The unit was removed and shipped back to the vendor in California for seal replacement and inspection of the gears. Staff said the vendor is returning the unit and that they expect to receive it on the Monday following the meeting.
Next steps and costs: Staff said they will schedule a cold alignment with energy management when the unit returns. The speaker stated the alignment company charge as "about $5" in the meeting audio; the transcript does not contain a complete lexical context (for example, whether the speaker meant $5,000). The vendor provided a $2,000 credit related to the repair, according to staff. Staff said they will submit a requisition for the alignment work when costs are confirmed.
Operational impact: Staff estimated the unit could be back in service in approximately two weeks after alignment and reinstallation, barring further issues. The speaker also said they are unsure whether the city will use the vendor again due to the repeated problems.
What remains unconfirmed: The exact dollar amount for the cold alignment and full repair costs beyond the $2,000 vendor credit were not specified in the transcript and should be confirmed in the procurement paperwork.
