Brookfield Falling Ball KF40 - Manual (Page 17)

Brookfield Engineering Labs., Inc. Page 17 Manual No. M11-353-A0512
Appendix A - Maintenance
A.1 Exchanging the Sample Tube
Caution Glass Components. Excessive force may result in broken glass.
1. Loosen the two set screws of the sample tube screw fittings (above and below).
a. Empty the water jacket and sample tube. Make sure the water jacket is clean on
the inside surface before reassembling.
2. Unscrew both of the sample tube screw fittings using a ring nut key.
3. Pull off the rubber seal (washer) on one end of the sample tube.
4. Pull the sample tube out at the other end.
5. Insert the new sample tube and also wet the sample tube gaskets and washers.
6. Assemble the sample tube in the reverse order. Observe that the ends of the sample tube
project evenly from the upper and lower plates.
7. Re-calibrate all the ball constants according to Appendix B.
A.2 Exchanging the Water Bath Jacket
Caution Glass Components. Excessive force may result in broken glass.
1. Remove the sample tube.
a. Empty the water jacket and sample tube. Make sure the water jacket is clean on
the inside surface before reassembling.
2. Unscrew the upper and lower plates on the connecting bar.
3. Unscrew the three lower nuts on the viscometer.
4. Replace rubber washers and insert the new water bath jacket.
5. Put on the upper plate and screw down the nuts evenly.
6. Fix the lower plate an the lower connecting bar.
7. Assemble the sample tube.
8. Calibrate all the ball constants according to Appendix B.
A.3 Exchanging the Ball or the Viscometer
1. Exchange the balls or viscometer.
2. Re-calibrate the ball constants according to Appendix B.