814 OPERATOR’S MANUAL
9
OPERATION
PRE-CUT CHECKLIST
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Proper Chain Installation: The bumper should lead the segment into the cut.
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Proper Chain Tension: The chain should be tight but easily pulled around the bar by hand.
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Adequate Water Supply and Pressure:
Minimum Flow: 2 gpm (8 lpm)
Minimum Water Pressure: 20 psi (1.4 bar)
Note: 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.
•
Proper Hydraulic Supply to the Saw:
Maximum Flow: 8 gpm (30 lpm)
Maximum Hydraulic Pressure: 2,500 psi (172 bar)
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Proper Hydraulic Motor Rotation: Some power packs have reversible flow. Or the quick disconnects
may have been reversed on a previous job. The chain should travel away from the operator on the
top of the bar.
PLANNING THE CUT
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Select the proper chain for the material being cut.
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Outline the cut with a permanent marker for a visual cutting guide.
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Avoid pinching the bar and chain. Always cut the bottom of an opening first, then top, and then the
sides. Save the easiest cut for last.
•
Be sure cut concrete cannot fall and injure operator or bystanders.
•
Check for live electrical wiring near the cutting area or in the concrete to avoid electrocution which
can result in death or serious personal injury.
