MAINTENANCE
WARNING:
To reduce the risk of injury, always unplug your tool before performing any
maintenance. Never disassemble the tool or try to do any rewiring on the tool’s electrical
system. Contact National for ALL repairs.
MAINTAINING TOOLS:
Keep your tool in good repair by adopting a regular maintenance program. Before use, examine
the general condition of your tool. Inspect guards, switches, tool cord set and extension cord for
damage. Check for loose screws, misalignment, binding of moving parts, improper mounting,
broken parts and any other condition that may affect its safe operation. If abnormal noise or
vibration occurs, turn the tool off immediately and have the problem corrected before further use.
Do not use a damaged tool. Tag damaged tools “NO NOT USE” until repaired (see “Repairs”).
Under normal conditions, relubrication is not necessary until the motor brushes need to be
replaced. After six months to one year, depending on use, return your tool to the nearest
National service facility for the following:
• Lubrication
• Mechanical inspection and cleaning (pulleys, spindles, bearings, housing, etc.)
• Electrical inspection (switch, cord, plugs, etc.)
• Testing to assure proper mechanical and electrical operation.
CLEANING:
Clean dust and debris from vents. Keep the tool handles clean, dry and free of oil or grease. Use
only mild soap and a damp cloth to clean your tool since certain cleaning agents and solvents are
harmful to plastics and other insulated parts. Some of these include: gasoline, turpentine, lacquer
thinner, paint thinner, chlorinated cleaning solvents, ammonia and household detergents containing
ammonia. Never use flammable or combustible solvents around tools.
WARNING:
To reduce the risk of injury, electric shock and damage to the tool, never immerse
your tool in liquid or allow a liquid to flow inside the tools.
REPAIRS:
If your tool is damaged, call for a return authorization number and return the entire tool.
• Shipments are not accepted without a return authorization number.
• COD or freight collect shipments will not be accepted.
Due to our lack of control of the many flooring removal conditions and techniques used in the field,
National will not be held responsible for injury to anyone or damage to any object, resulting through
use of the 3535 Corner Tool regardless of its age or condition or the manner in which it is used.