Troubleshooting Guide - KNOVA KN M-2500W Manuals

MAINTENANCE
LOWER BLADE GUARD
Do not use the saw without the lower blade guard. The lower
blade guard is attached to the saw for your protection. Should
the lower guard become damaged, do not use the saw until the
damaged guard has been replaced. Develop a regular check
to make sure the lower guard is working properly. Clean the
lower guard of any dust or buildup with a damp cloth.
CAUTION: Do not use solvents on the guard. They could make
the plastic "cloudy" and brittle.
WARNING
When cleaning the lower guard, unplug the saw from the pow-
er source receptacle to avoid unexpected startup.
SAWDUST
Periodically, sawdust will accumulate under the work table
and base. This could cause difficulty in the movement of the
worktable when setting up a miter cut. Frequently blow out or
vacuum up the sawdust.
WARNING
If blowing sawdust, wear proper eye protection to keep debris
from blowing into eyes.
LUBRICATION (Fig. GG)
All the motor bearings in this tool are lubricated with a suf-
ficient amount of high grade lubricant for the life of the unit
under normal operating conditions; therefore, no further bear-
ing lubrication is required.

TROUBLESHOOTING GUIDE

WARNING
To avoid injury from accidental starting, always turn switch OFF and unplug the tool before moving, replacing the blade or
making adjustments.
TROUBLESHOOTING GUIDE - MOTOR
PROBLEM PROBLEM CAUSES
1. Motor brushes not sealed or lightly sticking.
Brake does not
stop blade within
2. Motor brake overheated from use of
6 seconds.
3. Arbor bolt loose.
4. Brushes cracked, damaged, etc.
5. Other.
Motor does
1. Limit switch failure.
not start
2. Brush worn.
3. Fuse blown or circuit breaker tripped on
1. Brush worn.
Brush spark when
switch released.
2. Other.
defective or wrong size blade or rapid
ON/OFF cycling.
home panel.
Lubricate the following as necessary:
Chop pivot: Apply light machine oil to points indicated
in illustration.
Central pivot of plastic guard: Use light household
oil (sewing machine oil ) on metal-to-metal or metal-to-
plastic guard contact areas as required for smooth, qui-
et operation. Avoid excessive oil, to which sawdust will
cling.
Fig. GG
Chop pivot
SUGGESTED CORRECTIVE ACTION
1. Inspect/clean/replace brushes. See MAINTENANCE
section.
2. Use a recommended blade. Let cool down. See
REMOVING OR INSTALLING THE BLADE section.
3. Retighten. See REMOVING OR INSTALLING
THE BLADE section.
4. Replace brushes.
5. Knova Service Center.
1. Replace limit switch.
2. Replace brushes. See MAINTENANCE section.
3. Verify there is electrical power at the outlet.
1. Replace Brushes. See MAINTENANCE section.
2. Knova Service Center.
17
Central pivot of
plastic guard