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Working in high or low ambient temperatures
IMPORTANT!
Feeding hot hydraulic oil to an extremely cold hammer will cause internal stresses in the
hammer resulting in its failure.
If the hammer is used without pre-heating the oil:
The sealing parts of the hammer may fracture.
The diaphragm in the accumulator may tear.
High ambient temperature:
When operating the hammer in high ambient temperature: summer or tropical climates, above 30°C (86°F),
the temperature of the hydraulic oil must be monitored to ensure it does not exceed the specified
temperature limits.
If the oil temperature exceeds the maximum permissible operating temperature limits, use hydraulic oil of
proper viscosity. In this case the hydraulic oil of viscosity class HLP68 should be used. If the oil temperature
is still too high in spite of using the high viscosity oil, the auxiliary hydraulic cooler must be installed.
Low ambient temperature:
At temperatures below 0°C (32°F), the carrier must be warmed up prior to use in the way described by the
carrier manufacturer. Ensure that the hydraulic oil of the carrier is at least at 0°C (32°F), before starting up
the hydraulic hammer.
Note:
The hydraulic hammer and the carrier will not operate to full capacity until the oil temperature has reached at
least 60°C (140°F).
7.4. Grease
IMPORTANT!
If grease is not supplied sufficiently, then high heat is generated due to friction at the chisel of
the hammer. The heat can cause premature wear and cracking of the parts related to the
chisel.
Always observe the relevant safety regulations when handling oils and greases.
Lubricate and check the grease regularly (refer to Section “7.2. Care and maintenance schedule”). Every two
hours of continuous operation lubricate the chisel with appropriate amount of moly-based grease. Inject
grease between the chisel and the chisel bush, through the grease nipple provided.
Every 2 hours
5 ~ 10 strokes for PRB008 ~ 150,
12 ~ 15 strokes for PRB170 ~ 500
using a large size grease gun
Adjust greasing interval and amount of grease to the hammer models and working conditions.
