© 2012 ICS, Blount International Inc. Specications are subject to change without notice. REV020212 F/N 545353
TITLE 680GC OPERATOR’S MANUAL
14
OPER ATION
PRE-CUT CHECKLIST
• Proper Diamond Chain Tension: The diamond chain should be tight but easily pulled around
the guidebar by hand.
• Ensure all safety devices are properly mounted and functional and that all controls are in
proper working order.
• Be sure there are no obstructions (plumbing, electrical conduit, air ducts) and no unnecessary
people present.
• Always wear protective clothing, including hard hat, eye protection, hearing protection, non-slip
safety boots, and gloves. Avoid wearing loose fitting clothing.
• Diamond chains with SealPro
®
require a minimum water pressure of 20 psi (1.5 bar).
PLANNING THE CUT
• Outline the cut with a permanent marker for a visual cutting guide.
• Avoid pinching the guidebar and diamond chain. Always cut the bottom of an opening first,
then top, and then the sides. Save the easiest cut for last.
• For the straightest cuts use the “Step Cut” method. First score the entire cut line approximately
a half-inch deep using the nose of the guidebar. Next, deepen the cut by about two inches. Then
plunge all the way through and complete the cut using the WallWalker
®
.
• Be sure cut concrete cannot fall and injure operator or bystanders. Concrete is very heavy,
one cubic foot = 12 in x 12 in x 12 in = 150 lbs. (30 cm x 30 cm x 30 cm = 68 kg).
• Check for and remove any obstructions (plumbing, electrical conduit, air ducts, etc,) that may
interfere with the cut.
The single most important factor an operator can control to
increase chain life is to use adequate water pressure. Insufficient
water supply will result in excessive wear to the chain, which can
lead to loss of strength and chain breakage, and/or damage to the
guidebar nose sprocket.
IMPORTANT
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