National Flooring Equipment GP3000, Instruction Manual

Operation

7

TRANSPORT

With counterbalancing weights in the upper weight baskets, tilt the machine so that the 

caster wheel is firmly on the floor. You can use the flop handle to pull the machine or 

you can fold the flop handle over and push from gear case side.

START-UP PROCEDURE

1.  Ensure plug is properly connected to the power source.
2.  Ensure dust hose is connected correctly to dust collector and machine.
3.  Check that the main switch is turned on and the dead man switch is in place, with 

the lanyard around the operator’s wrist.

4.  Place downward pressure on handle; press the ‘Run’ button.
5.  Release pressure from handle and immediately begin moving the machine from 

side-to-side to prevent the tools from digging into the concrete surface and creat-

ing an uneven profile.When grinding in work area is complete, push the ‘Stop’ 

button.

TOOLING INSTALLATION

1.  Remove weights.
2.  Raise adjustable handle as far forward as possible; lock into position and put one 

foot on the rubber-tired wheel.

3.  Tip the machine back to the floor so that the handle lays on the floor.
4.  Clean mounting surface; slide the diamond into the holder (Figure 1) and tap into 

place. 

5.  After the diamonds are installed, raise the machine until it is in operating position 

with all tooling touching the floor. 

6.  Lower handle to position best suited for the operator, and re-place the weights.

Directional Tooling Placement

When looking at the machines from the bottom (Figure 2), the directional tooling marked 

“Right” should be placed on the heads that rotate counterclockwise. Tooling marked 
“Left” should be placed on the heads that rotate clockwise. 

CONTROLLER

Operating Controls (Figure 3)

Run/Stop

 - Pushing the key button “Run” will turn the controls on and start the motor. 

Pushing the key button “Stop” will stop the motor.

Reset

 - Resets the drive to clear a fault situation.

Lo/Re

 - This button is not used.

Esc

 - Returns to a previous menu.

Up/Down Arrows

 - While powered on but without the motor running, the up and down 

arrow buttons can be used to set the motor speed faster or slower than the base RPM 

of the motor, or to move through the menu. 

“Dead Man” Key 

- The “dead man” key is located in the lower center of the red box, 

and is intended to be used for the safety of the operator and protection of the machine 

FIG. 3

FIG. 2

FIG. 1

403310_GP3000_RevD