146 | Chapter 4: Maintenance
1. Locate the Accessory Fuse port on the rear panel below
the Accessory Outlet for the vacuum pump.
2. Use a screwdriver to open the port and release the fuse.
It has a spring action.
3. Replace the fuse and reinstall.
Vacuum Filtration Carrier: Replace the Gasket
If you observe damage to the vacuum filtration carrier’s gasket, you must order a
replacement part from BioTek, and follow these instructions to replace it.
Tools: Philips head screwdriver
1. Remove the carrier from the instrument and put on a level work surface.
2. With a Philips screwdriver, remove the six screws around the perimeter of the
top of the carrier.
3. Lift off and set aside the top plate, and remove the gasket.
o
If the grate (located under the gasket) needs to be cleaned, rinse it under tap
water. Allow the grate to dry before placing it and the gasket in the carrier.
4. Place the new gasket in the carrier, correctly positioning the notch with the
corresponding indentation on the carrier’s right side.
n Note: The gasket fits only one way on the carrier. When replacing it, align the
notch in the gasket with the small “bump” on the carrier.
5. Restore the top plate and its six screws. Do not overtighten.
6. Verify vacuum filtration performance by performing the Qualification
procedure: Vacuum Filtration Evacuation Efficiency Test on page 165.
405™ Microplate Washer LS
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