MPS-I-0819
Page 14
Page 15
MPS-I-0819
E-SPTS-I-0809
800-638-3326 • edcoinc.com • [email protected]
800-638-3326 • edcoinc.com • [email protected]
EQUIPMENT DEVELOPMENT CO., INC.
EQUIPMENT DEVELOPMENT CO., INC.
Changing Blades -
On EDCO saws in this manual
Disconnect the machine from the power source before performing any work on the equipment (i.e. changing
the blade). To disconnect the power source on gasoline engine models, remove the spark plug lead. On electric
models, unplug the electrical power cord at the machine.
• Make sure you have the proper blade for the job. Determine the hardness and composition of the slab. Give your dealer
complete information including whether re-bars are present, the desired depth of the cut, and length of the cut. If in doubt,
contact the blade manufacturer.
Inspect the blades before installing. Check diamond blades for cracks, loose segments and oversize, worn, or
out-of-round arbor holes
(On page 17)
. Do not use
any
questionable blade since serious personal injury and/or
damage to property can result. Do not use warped, twisted, or out-of-balance blades. Unbalanced
blades will wear excessively, vibrate and damage both arbor shaft and bearings. Do not use blade without a
drive pinhole
(Figure 10).
For safety reasons, EDCO
does not
recommend the use of any abrasive blades. Abrasive blades can break
and cause serious personal injury to operator and/or bystanders. If abrasive blades are used by choice, use
only reinforced abrasive blades. Inspect blades carefully.
Never exceed the maximum operating speed of the blade. Be sure to match the blade speed rating with the
arbor shaft speed on the machine. The standard models of the SK-14, SB-14, DS-18 have an arbor shaft
speed (unloaded) of 3600 RPM and 3000 RPM under load.
• Do not remove or lift the blade guard unless machine is stopped and all power is disconnected. Be sure to reinstall blade
guard before reconnecting the power source.
• Be sure the arbor shaft, backing plate, and blade cap are clean and in good condition. Make sure the threads are clean and
undamaged. If any damage is detected, consult your EDCO dealer
(or the EDCO factory)
.
• The backing plate and blade cap
(Figure 11)
should be the same diameter, do not use if they are different diameters. For
abrasive blades and for all steel centered diamond blades, the backing plate and blade cap must be at least 1/4 the
diameter of the blade.
• The drive pin should be tight in the blade cap and long enough to fit through blade and into hole in backing plate.
• Place the blade on the arbor shaft and turn until the drive pinhole lines up with the backing plate.
• Place the blade cap on the arbor shaft so the drive pin goes through the holes in the blade and backing plate.
• Put washer and arbor shaft nut and tighten arbor shaft nut.
• Secure the blade guard in the operating position before reconnecting the power supply or starting engine.
Arbor Shaft
Figure 11
Blade Cap
retaining Nut
Blade Retaining
Cap
Backing Plate
Drive Pin
Drive Pin Hole
Internal tooth
Lock Washer
Figure 10
Drive Pin Hole