National Flooring Equipment 3397, Service Manual

Maintenance

8

MAINTENANCE AND INSPECTION

Safety and service life of the machine depend on proper maintenance. The following table shows recommendations about time, inspection, 

and maintenance for the normal use of the machine. The time indications are based on uninterrupted operation. When the indicated number 

of working hours is not achieved during the corresponding period, the period can be extended. However, a full overhaul must be carried out at 

least yearly. Due to different working conditions, the frequency for inspections will vary. Prepare a suitable inspection schedule adhering to the 

specific working conditions.

Operating Hours

Inspection and Maintenance 

Every 3 hours

• 

Check whether there is any foreign matter in the hopper, the 

feed spout, or in the blast wheel unit.

Daily, prior to operation

• 

Check the hose connections for tightness.

• 

Check the hose to the filter for damages. 

• 

Make sure that the dust collector has been emptied. 

• 

Check blast wheel, feed spout, liners, and fasteners for wear 

or damage. 

• 

Check the separator parts for wear and defects. 

• 

Check the level of abrasive in the storage hopper. Fill to bot

-

tom of wire mesh if necessary. 

• 

Check the magnetic and seals for wear; replace if necessary. 

• 

Check  the  electrical  connections,  motor,  and  separator  for 

sediment or foreign bodies. 

• 

Check function of all safety devices. 

• 

Check tightness on all accessible screw connections.

Yearly

• 

Fully overhaul and clean the machine.

CAUTION:

 PRIOR TO ANY REPAIR WORK ON THE MACHINE OR ITS DRIVES, SECURE THE MACHINE AGAINST UNINTENTIONAL 

START-UP. PULL OUT THE MAIN PLUG; STORE NEAR THE MACHINE TO AVOID ACCIDENTS.