National Flooring Equipment GP3000, Instruction Manual

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LUBRICATING THE MACHINE
• Four grease fittings to be greased with 3 shots of grease every six months.
• The main gear box contains 28 pounds of grease. Check the level once per year by removing plug at the front of the gear case. Grease should
be halfway up on the drive upper gear. Do not fill to the top. The drive gear must not be covered.
KEEPING MACHINE CLEAN
Schedule daily cleaning after each days grinding. Do not let any cake-up of cement grinding paste occur, as this could create an overload on the
machine.
1. Tilt machine back on handle
2. Clean under carriage with water using a garden hose and nozzle.
3. Clean all grease fittings.
Make sure to clean the air filter daily.
REPLACING WORN, DAMAGED, MISSING PARTS
Morflex Couplings
• Bolts should be checked weekly for tightness. Loose bolts cause extreme vibrations and premature failure of rubber inserts in the couplings.
• Flexible couplings should be changed a minimum of once per year whether machine is used or not.
HIGH MOTOR TEMPERATURE
• “Running Hot” is normal for the smaller, lighter “T” type motor. Even though they will run hotter, the “T” motors run more efficiently on this
machine.
• Electric motors on this machine are designed to operate efficiently at 165°F (73.8°C)
• The temperatures of motors are rated by temperature rise and full load over and above room temperature (77°F or 25°C).
• Do not touch the motors while they are hot. To check the temperature of the motor, place a 200°F thermometer on the frame of the motor and
a glob of putty over the bulb of the thermometer.
• A thermal protected starter is used on these machines, which protects the motor against low voltage and overload conditions which could raise
the temperature of the motor beyond safe limits.
TOOLING WEAR AND REPLACEMENT
Check diamonds for wear periodically, as they may be worn flush with the holder lugs.
1. Remove the weights.
2. Unscrew safety knob.
3. Push knob to the rear to release the locking mechanism.
4. Raise handle two or three notches
5. Lock handle by reversing the above procedure and tilt holders off the floor.
Note: Pushing the handle forward two or three notches creates a safe stone position for changing.
Maintenance
9
WARNING: IF WORN OR DAMAGED PARTS (BEARINGS, GEARS, ETC.) ARE NOT REPLACED PROMPTLY, DAMAGE TO THE MACHINE
COULD OCCUR.
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