DFG500 - 2
Operating Manual
STARTING WORK
BEFORE STARTING WORK CHECK SET UP OF THE MACHINE AND GRINDING
PLATES HAS BEEN COMPLETED.
1. Ensure the power supply is correct.
DFG 500 - this should be a 380/415v 32 amp supply from the mains or generated with a
minimum of 20 kva on 50 cycles.
2. DFG 500 - the plug on the machine is a 380/415v 32 amp red plug.
3. After connecting the machine to the power supply, turn the red isolator switch to the On
position red light will illuminate on the electric panel. To check that the 3 phase power
supply is phased to suit the machine, press the raise and lower buttons on the handle bar.
If the machine works correctly on the buttons the supply is phased to suit the machine. If
not 2 of the 3 phases must be reversed – see page 5.
4. Raise the machine high enough to gain access to the dust skirt, slacken the screws thus
ensuring the skirt is free to move up and down as required.
5. Lower the machine on to the grinding plates and make sure the jockey wheels are free
moving and off the floor surface.
6. It is vital that the machine should grind the floor along the same plane (Incorrect set-
up will result in uneven diamond wear, deep grinding marks, vibration and damage
to flexible couplings that support the heads).
7. Set the machine down on the floor to be prepared and check the level of the floor with a
spirit level. Place the spirit level on the front side of the machine and adjust the rear wheel
height using the black hand wheel until the level of the machine is the same as the level of
the floor. Then lock the hand wheel.
8. Fit the dust skirt to the correct height, approx 0.5mm clear of the floor and tighten up set
screws.
9. Lift the floor grinder up on to the jockey wheels using the raise button on handlebar.
Examine grinding plates for any damage and check allen screws bolts are tight – see page
2 changing grinding plate for torque settings. Connect vacuum hose or water supply to
control dust. WARNING – DO NOT ALLOW WATER TO MAKE CONTACT WITH ANY
ELECTRICAL COMPONENTS. The floor grinder is now ready to commence work.
10. Start both motors up by pressing the start buttons one at a time and allow the machine
to run for approximately 30 seconds.
11. Lower the machine on to the floor whilst moving the machine either forwards or
backwards. Try to grind the surface in a figure of eight pattern for best finish.
12. When lifting machine to cease grinding the heads should be lifted off the floor slowly
with the dust extraction still operating in order to allow the dust to clear from the work area.
13. If the operator has any difficulty whilst operating the machine press the red stop button
located at the back of the machine.
NEVER ALLOW THE MACHINE TO REMAIN STATIONARY WHILST THE PLATES ARE
ROTATING AND IN CONTACT WITH THE SURFACE.
NEVER CHANGE SPEED SETTING WHILST MACHINE IS IN USE – SEE PAGE 5
