Product Manual

16
5. When the blade has completed about 1/3 of the
cut, increase the feed rate. Observe chip
formation until cutting is at its most efficient rate
(see sect. 10.3) and allow the saw to complete
the cut.
6. The blade is now considered ready for regular
service.
10.3 Evaluating cutting efficiency
The best way to determine if the blade is cutting
efficiently is to observe the chips formed by the
cutting.
If chip formation is powdery, then feed rate is much
too light, or the blade is dull.
If chips are curled, but colored — that is, either blue
or straw-colored from heat generated during the cut
— then feed rate or blade speed (or both) is too
high.
If chips are slightly curled, warm, and silvery (not
colored by heat), the blade is sufficiently sharp and
is cutting at an efficient rate.
Consult a machinist’s handbook or similar source for
specific speed and feed rates.
11.0 User-maintenance
Always disconnect power to
machine before performing maintenance,
unless indicated otherwise. Failure to comply
may result in serious personal injury.
Clean up accumulated saw cuttings after use. Make
sure vise lead screw is kept free of saw cuttings and
other material that would cause damage. Open both
wheel covers and remove chips from the wheel
housings.
Remove dust or debris from motor fan area with
compressed air or vacuum. Wear eye protection
when using compressed air.
If power cord is worn, cut, or damaged in any way,
have it replaced immediately.
Release tension on blade if saw will sit idle for an
extended period of time.
Periodically clean chip sludge from chip tray and
reservoir.
11.1 Lubrication
See sect. 11.4, Table 3, for lubrication chart.
Blade guide ball bearings are permanently
lubricated and sealed; they require no further
lubrication.
Apply a light coat of machine oil to moving parts as
needed.
Periodically apply light coat of machine oil to
exposed metal surfaces, such as vise bed, to
prohibit rust.
11.1.1 Gear box oil change
Drain and refill gear box according to Table 3
recommendations.
To check gear box oil level, place bow in down
position and wait a few moments for oil to settle.
Check level in sight glass on side of gear casing (A,
Figure 11-2). Oil level must be above red dot in
middle of sight glass.
To change gear box oil:
1. Disconnect machine from power source.
2. Raise bow to highest position.
3. Unscrew drain plug (Figure 11-1), and allow oil
to drain completely. Follow local regulations for
proper disposal of used oil.
Figure 11-1: gear box drain
4. Reinstall drain plug. Use pipe thread sealant on
plug threads.
5. Remove fill plug (B, Figure 11-2) and insert
approximately 850 mL (1/4 gal.) of Mobil
®
SHC
Gear Oil 460, or equivalent.
6. Reinstall fill plug.
7. Lower bow. Recheck sight glass, top off if
needed.
Oil level in sight glass should
not fall below the red dot. Insufficient oil will
result in overheating and eventual gear damage.
Figure 11-2: gear box fill hole and sight glass