Hammer HB 450, Manual

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TROUBLESHOOTING
11.2 THE HAMMER OPERATES IRREGULARLY BUTTHE BLOW HAS FULL POWER
NOT ENOUGH FEED FORCE FROM EXCAVATOR
Refer to the correct working methods. See “Daily operation”.
RELIEF VALVE IN HYDRAULIC CIRCUIT OPENS AT A LOW PRES-SURE.
HAMMER OPERATING PRESSURE IS NOT REACHED
Check the installation. Check the relief valve operation. Adjust the reliefvalve in hydraulic circuit. Measure
the high pressure in the hammer inlet line.Contact your local dealer for more information. See “Measuring
hammer circuit”. See “Measuring hammer operating pressure”.
FAILURE IN HAMMER VALVE OPERATION
Failure in greasing device hydraulic circuit.
11.3 THE HAMMER OPERATES IRREGULARLY ANDBLOW HAS NO POWER
THE WORKING METHOD IS NOT CORRECT
Refer to the correct working methods. See “Daily operation”.
RELIEF VALVE IN HYDRAULIC CIRCUIT OPENS AT A LOW PRES-SURE.
HAMMER OPERATING PRESSURE IS NOT REACHED
Check the installation. Check the relief valve operation. Adjust the reliefvalve in hydraulic circuit. Measure
the high pressure in the hammer inlet line.Contact your local dealer for more information. See “Measuring
hammer cir-cuit”. See “Measuring hammer operating pressure”.
PRESSURE CONTROL VALVE SETTING IS INCORRECT
The hammer must be serviced in an authorized Tradicia-K service shop.See “Measuring hammer circuit”.
PRESSURE LOSS IN PRESSURE ACCUMULATOR
The hammer must be serviced in an authorized Tradicia-K service shop.See “Pressure accumulator”. See
“Charging accumulator”.
FAILURE IN HAMMER VALVE OPERATION
Hammer should serve in the authorized service stations.
11.4 IMPACT RATE SLOWS DOWN
OIL HAS OVERHEATED (OVER +80°C/+176°F)
Check for a fault in the oil cooling system or an internal leak in the hammer.Check the hydraulic circuit of
the carrier. See “Measuring hammer circuit”. Check the relief valve operation in the carrier. Check the line
size.Assemble an extra oil cooler.
HYDRAULIC OIL VISCOSITY TOO LOW
Check hydraulic oil. See “Requirements for hydraulic oil”.
XCESSIVE BACK PRESSURE IN RETURN LINE
Check the installation. See “Measuring hammer circuit”. Checkthe size of the return line.