Technical Data; Troubleshooting; Machine Data - Atlas Copco LCD 500 Instrucciones De Seguridad Y De Funcionamiento

Safety and operating instructions

Technical data

Troubleshooting

Problem
Core drill will not operate
Core drill runs at low speed
Core drill runs without pushing the trigger
Trigger lever stuck
Trigger lever cannot be released
System overheats

Machine data

Weight without hoses and drill bit, kg (lb)
Oil flow range, l.p.m. (US gal/min)
Maximum pressure relief valve setting, bar (psi)
EHTMA category
Maximum back pressure in return line, bar (psi)
Oil working temperature, °C (°F)
Required cooling capacity, kW
Type
LCD 500
LCD 1500
18
Cause
Core drill not connected properly
Oil flow and/or pressure too low
Oil flow and/or pressure too low
Contaminated hydraulic system
Internal leakage
Untightened trigger valve bushing
O-ring failure
Check valve spring broken
Flow too high
Improper pressure/return line connection
Back pressure too high
Impurities
Trigger lever blocked in locked position
Flow too high
Insufficient cooling
20 l.p.m. (5 US gal/min)
rpm Drill bit diameter mm (in.)
600 75-202 (3-8)
1500 25-75 (1-3)
© 2010 Atlas Copco Construction Tools AB | No. 3392 5189 90a | 2010-01-01
Solution
Check the performance and connection of
the power source. Make sure that the return
line coupling is completely fitted with no
clearance
Check the power source and ensure that the
flow and pressure are according to the
technical specifications
Check the power source and ensure that the
flow and pressure are according to the
technical specifications
Clean system
Carefully check the O-ring seals in the trigger
valve bushing and replace damaged ones
Tighten trigger valve bushing properly
Replace the O-ring at the bottom of the
trigger valve bushing hole
Replace spring
Check the power source and ensure that the
flow and pressure are according to the
technical specifications - and that the
connections are correct
Check trigger valve/reversing valve for
seizing
Readjust the flat spring through the two
screws on the motor housing
Reduce the flow from the power source. If
necessary, use a flow divider to control the
flow
Use a power source with higher cooling
capacity or add an additional oil cooler in the
return line
LCD 500, LCD 1500
7 (15.4)
20-30 (5-8)
160 (2300)
C and D
14 (200)
30-70 (86-158)
Approx. 2
30 l.p.m. (8 US gal/min)
rpm Drill bit diameter mm (in.)
900 50-100 (2-4)
2250 12-30 (0.5-1.2)
LCD 500, 1500
Original instructions