User's Manual

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Identify the round safety button at the end of the lower ER arm (this button has a symbol of a hand on it).
Push and hold down the safety button.
While holding down the safety button, raise or lower the ER arm to the desired position, then let go of the
button.
Grip the long handle and turn it clockwise to securely lock the lower ER arm in its new position.
Identifying the orientation and position of ER arms and accessories
The ER features a series of graded rulers, which help determine the exact orientation and placement of
the accessory arms and accessories.
When you face the ER stand you will notice a vertical ruler on the left side, which indicates the height of
the lower accessory arm.
On the right side is another vertical ruler, which indicates the height of the upper accessory arm. These
heights are automatically input into the ER software when the interface system is launched.
Both rulers feature safety stoppers at the furthest ends of rotation of the arms to prevent injury when the
assessor’s hand is placed in the vicinity of these rulers.
The round button, which reads "push to unlock", is primarily a safety mechanism that prevents
the lower ER arm from moving once it has been unlocked with the long handle. When you
press and hold this button (provided you have unlocked the ER arm using the long handle), you
will be able to raise, or lower, the ER arm. If you let go of the safety button while raising or
lowering the ER arm you will hear a grinding sound. This is like an emergency breaking
system. Try not to let go of the safety button too often or the mechanism may wear out.
When turning the long handle clockwise, its movement will eventually be blocked, because it
will be fully locked. However, when turning the long handle counterclockwise, the handle will
continue to turn and eventually unwind, falling off the ER stand. This does not happen with
proper, regular ER use, since under normal conditions, the handle only requires a slight turn
(1/4 rotation) to efficiently unlock the lower arm.