BHI HydroRam HK300S, Operations Manual & Parts List

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BHI
Best Hammer Industries
- 32 -
Ⅵ. TROUBLE SHOOTING
Dismantle the hammer after releasing the gas from head cap. If the tension bolt is
broken, all 4 bolts are to be checked for tight fitting. In case of the extension bolt of
accumulator, all 4 bolts are to be checked, too.
․ Hammer does not start
Cause Required action
1 Pressure and return lines have been mixed up Connect them correctly
2 Shut-off valve or return lines are close Open shut-off valve
3 Gas pressure in head cap too high. Readjust nitrogen gas pressure
4
Damaged screw couplings are blocking pressure or
return lines
Replace with new one
5 Defective electric system for hammer operation. Call authorized service man
6 Defective magnet of valve switch Replace magnet
7 Operating pressure too low
Inspect the engine speed of carrier and
readjust the operating pressure.
8 Lack of hydraulic oil Fill hydraulic oil
․ High frequency and low blow power
Cause Required action
1
No gas in head cap:
Defective ring of the upper seal
Replace seal ring
2 O-ring is damaged Replace o-ring
․ Working temperature is high.
Cause Required action
1 Oil is not sufficient
Refill hydraulic oil
2
Oil flow of the carrier to the hammer
is excessive
Reduce the speed of the engine.
Adjust the oil pump
3
Oil temperature is high, but hammer is not
connected to oil cooler
Connect to oil cooler
4 Defective relief valve Replace with new relief cartridge
․ Low blow frequency