Model 686CS Instruction Manual
D00312132
Revision F, October 2015
19
5.6
Basic Mixing Instructions
The blender should not be operated without any contents in the
mixing cup.
Always install the mixing blades so that the blade tips curve
upward and the beveled edges are visible. See Figure 5-1.
To mix cement slurry in the Constant Speed Mixer, follow these steps:
1.
Fill the 32-oz or 64-oz container to the proper level with fluid.
2.
Weigh and prepare the dry constituents. Place these additives where they can
be quickly added during the mixing phase.
3.
Press
P1
on the control panel and watch the display for speed.
4.
When the speed reaches 4000 RPM, quickly add the dry ingredients as
described in the API specification. The mixer will begin counting down to 15
seconds when the 4000 RPM speed is achieved.
5.
After the 15-second mixing step is complete, press the button labeled
12000 35
sec
. The mixer will accelerate to 12,000 RPM. When the speed stabilizes at
12,000 RPM, the blender will count up to 35 seconds. The mixer will then slow
down and stop. Do not remove the mixer container until the display shows 0
RPM and the fluid stops swirling. The cement sample is now ready for testing.
If you are experimenting with additives that are harder to mix, you can manually
operate the blender at any speed and time setting before pressing the API button. If
alternate speeds are desired, they can be programmed into profiles
P1
and
P2
.
