The 10-Point Sweco Equipment Checklist That Stops Expensive Rework

If you landed here after searching for “lön miljökonsult Sweco” or “Sweco spontanansökan”, you’re probably looking for the Swedish engineering consultancy. If you came for the 2026 Winter Olympics skiing schedule, this page won’t help you either. This is the other Sweco: the one that makes vibratory screens, separators, and oilfield wellhead equipment for mining and energy. Same spelling. Completely different machine shop.

I’ve been on the operations side of that equipment for eight years. I’ve ordered the wrong screen, skipped the final check “because we were behind,” and paid for it in rework. This checklist is the result. It’s ten checks, and it takes about 30 minutes if you do it carefully. At least, that’s been my experience with the Sweco units in our plant and the customer sites I support.

When to use this checklist

Use this before you run a new Sweco screen for the first time, after a rebuild, or whenever you see a change in product quality. It’s a 30-minute routine if you’re methodical, 10 minutes if you know the machine—but don’t skip the 10-minute version either.

Five minutes of verification beats five days of correction.

The 10-point Sweco checklist

1. Confirm the mesh and part number before you install

This is step one for a reason. I once heard from a food plant that their peanut butter separator kept blinding. The operator thought the Sweco unit was worn out. It wasn’t. The mesh on the frame was a different part number than the spec sheet—one digit different. From the outside, an 80-mesh screen and a 100-mesh screen look almost identical. The reality is they run completely differently.

Check the part number stamped on the frame, not just the tag on the packaging. If you have any doubt, measure the wire opening or compare it to a known-good screen. This takes 2 minutes and would have saved us a $1,400 re-bagging job in 2022.

2. Re-tension after 30 minutes

New screen cloth stretches more than most people expect. I’ve seen a 48-inch Sweco screen go from properly tensioned to loose in the first half hour of running. Tighten it, run it, stop, then tighten it again. Mark the frame with a paint pen after the second tension so you know it’s done.

3. Check motor weight phase orientation

The vibration pattern depends on where the eccentric weights are set. If someone worked on the motor, the weights can end up in a different phase. The screen still rotates, but the product doesn’t travel the way it should. Compare the position marks to the manual before startup.

4. Inspect seals for pinch and dry rot

Separator seals are cheap, but they cause expensive contamination when they fail. Look for pinch marks, cracks, and hard spots. If a seal has been sitting in a drawer for two years, replace it anyway.

5. Run a five-minute dry test

I used to think dry tests were overkill. Then a loose discharge spout sprayed slurry onto the floor during a live run. Now I always run the unit with no material first. Watch the material pattern, listen for ticking, and confirm the discharge spout is secure. You can catch most setup issues in those five minutes.

6. Verify thread type and gauge on oilfield wellhead parts

This one is for the oilfield side. For wellhead connections, the thread type has to match the client’s spec. I knew I should check thread gauges before shipping, but I thought “we’ve done this before.” That was the one time the client used a different API group. Wrong threads on a $2,100 assembly—straight back to the shop.

Keep the current API specification sheet near the bench. Match the thread gauge, not just the thread size.

7. Log any change

Most screen problems don’t happen because of a sudden failure. They happen after a change: new screen supplier, new feed rate, new operator, new lube. Keep a simple log on the equipment sheet. If the product moves differently today than yesterday, the log tells you where to start.

8. Test with actual material at low feed

Low feed is different from dry test. It lets you see how the material spreads across the screen before it builds up. On a 48-inch unit, we once skipped this and went straight to full production. The material short-circuited to the oversize discharge because the screen wasn’t seated properly. A 2-minute check would have caught it; we spent 2 hours cleaning up instead.

9. Keep a known-good spare kit

Stock one screen, one seal set, and one spring for each Sweco unit. The first time we didn’t, a bad seal became a 3-day shutdown because the local distributor didn’t have the size in stock. A small shelf full of parts is the cheapest insurance you can buy.

10. Record vibration readings monthly

I didn’t believe in baseline vibration data until our motor failed on a Sunday and I had no reading to compare against. The repair cost $3,100 and took six days. Now we record vibration values on the first of every month. A 15% jump tells you to start planning maintenance before the failure.

Common mistakes I still see

More often than not, these mistakes happen on rush orders. The checklist isn’t a bureaucratic burden—it’s a memory backup. Here are the things that get skipped first:

• Forgetting to re-tension after the warm-up run.
• Installing a replacement screen without checking the part number.
• Assuming the previous shift already did the dry test. If you didn’t see it, do it again.
• Ignoring small vibration changes because “it still runs.”

If you’re in a hurry, do steps 1, 2, 5, and 8 at minimum. Those four catch the expensive mistakes.

Five minutes of verification beats five days of correction.

And to close the search loop: if you’re here for the other Sweco—the Swedish engineering consultancy—the environmental consultant salary details and open applications are on their career portal, not on this page. Same for the 2026 Winter Olympics skiing schedule. And if you’re still wondering what skiing is: it’s snow, slopes, and Olympic schedules—not screen mesh. This is the Sweco that screens, separates, and stays in the mine.