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CO23 User Manual ◄ 13
If symptoms of poor performance develop, the following chart can be used as a guide to correct the problem.
When diagnosing faults in operation of the cutoff saw, always check that the hydraulic power source is supplying the
correct hy draulic ow and pressure to the cutoff saw as listed in the table. Use a owmeter known to be accurate.
Check the ow with the hydraulic oil temperature at least 80 °F/27 °C.
PROBLEM CAUSE REMEDY
Tool does not run. Power not functioning. Check power unit for proper ow and
pressure (15 gpm at 2000 psi/56 lpm
at 140 bar).
Coupler or hoses blocked. Remove obstruction.
Mechanical failure. Disassemble tool and inspect for
damage.
Tool runs backwards. Pressure and return reversed. Correct hose connection or ow di-
rection. Motor shafts with right-hand
threads rotate counterclockwise,
motor shafts with left-hand threads
rotate clockwise.
Oil leakage between motor housing
and on-off block or motor.
Oil tube O-ring failure. Replace as required.
Motor face seal failure. Replace as required.
On-off trigger is hard to press. Backpressure too high. Should not exceed 250 psi at 15
gpm/17 bar at 571 pm measured at
the end of the tool operating hoses.
Pressure and return reversed. Correct for proper ow direction.
Saw cuts too slow. Insufcient oil ow or low relief valve
setting.
Adjust oil ow to proper gpm. For
optimum performance adjust relief
valve to 2250 psi/155 bar.
Wrong wheel for material being cut. Use correct wheel.
Saw gets hot. Hot oil or excessive oil ow. Check power unit for adequate cool-
ing; should maintain uid at or below
140 °F/60 °C. Power unit may be
producing more ow than the saw
will accept under the existing cutting
conditions. Reduce ow until saw
performance starts to drop off.
TROUBLESHOOTING