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MACS II User Manual
101796668 Revision E 10
There are still hot electrical terminals inside the panel when the power switch is
turned off It is always safe to physically disconnect the machine from the Power
source rather than using Power On/Off Switch to isolate power.
Refer to the electrical schematic before performing any maintenance or
troubleshooting.
2.1.4. Pinch Points
The pressure cell, lid and drawer are all controlled by air and operate slowly.
However, the operator should not interfere, place tools or body parts in paths of
these controlled motion.
The cell assembly is very heavy and can cause severe injury if an obstruction is
placed in its path. When Cell motion is initiated keep hands away and well clear of
the cell assembly.
The cell lid lifts up and facilitates easy removal of O-ring. While operating Cell Lid
make sure to stand clear and keep an unobstructed path for the cell lid.
The cell drawer can also be controlled in and out of the Macs II. Ensure that the front
doors are open and that nothing blocks the drawer when the process is initiated. Do
not stand in front of this area while Drawer motion is initiated
2.2. Ergonomic Considerations
The Macs II is a large, heavy machine that must be handled carefully when moving
during installation or maintenance. The casters allow the machine to be rolled easily
in the lab, operators should only roll the machine slowly and should watch for debris
on the floor. If the machine must go on an incline or decline, more than one person
should help guide it.
The pressure chamber has a heavy lid that that is slowly raised and lowered
automatically with air. The cell body as well as the cell drawer is also slowly
controlled with air. There are no heavy components that the operator must move
other than a sample loaded slurry cup at less than 10 lbs.
2.3. Environmental Considerations
This machine tests cement slurries with additives, using water as a pressurizing fluid.
The operator must be aware of proper handling and disposal practices for these
materials.