Refusal Criteria For Vibros
If the pile does not move one foot in 30 seconds of vibro operation at full speed, resort to a larger vibro. APE equipment may exceed the refusal driving criteria for short periods of time as may be needed to penetrate hard soil layers or obstacles. Contact APE or your local APE distributor for special instructions when faced with refusal conditions. In such cases, a heat gun is used to monitor the temperature of the bearings and related components to prevent use of the machine beyond 195 degrees at the bearing covers.
