I used to manage many sample routes, some with more than 100 samples at a time. We used to prelabel not only the bottles, but also put a label on the lid with the machine ID so that the bottle could easily be selected from the tray. The bottles were in route order in the tray. The lid label was put on with the edge of the label hanging over the top of the bottle so it could be easily removed once the sample was taken. At the end of the route it was easy to see what samples could not be taken for whatever reason - these were the bottles with the lid label still on.

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Book Bits: Oil Analysis Indicates Contamination

From the book "Oil Analysis Basics"

Increasing concentration of silicon, sodium, boron, calcium and magnesium can signal the ingress of contamination. A lock-step increase in silicon and aluminum typically suggests dirt ingress, although silicon is also the primary element found in anti-foaming additives (silicone) which can cause confusing results.

Increasing levels of sodium and boron may signal the ingestion of glycol-based coolant. Calcium and magnesium are often present when hard water is ingested due to spray downs or cooling system leaks, but they are also common elements found in engine oil additives.

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"Do you have a recommended checklist before changing over equipment such as motors or air fins from conventional grease lubrication to automatic grease lubricators?"

Here are a few considerations:

1. Verify the amount of grease that should be supplied to the unit on an ongoing basis. This can be estimated by verifying that the grease provides sufficient oil viscosity at operating temperature, calculating the volume required per lubrication event (based on element dimensions), calculating the frequency for relubrication, and setting the system timer to assure that the volume in the lubricator displaces to provide the right volume over time.

2. Verify that the supply and pressure relief piping is free of obstructions. Verify that the system does not shake appreciably, and if it does, then arrange for remote (indirect) installation. Verify that the feed lines are short enough and large enough ID so that the lubricator can overcome whatever line loss may exist. Verify that the selected lubricant can accommodate ambient temperatures in the surrounding area.

3. Instead of removing the manual relubrication work assignment, modify the assignment to require an inspection and verification of effective unit operation, and include a cursory component inspection in the work order.

Mike Johnson, Noria Corporation

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