Ice 18ZR, Руководство по эксплуатации и обслуживанию

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Section 5: OPERATION Page 34 OM-ZR-May15
Changing Frequency (vibrations per minute)
In order to provide maximum flexibility in achieving optimum pile penetration and extraction rates, the
frequency of the vibrator is adjustable.
The frequency can be varied by changing the engine rpm and in combination with eccentric moment control can
be helpful in adjusting driving force in particular conditions.
Unclamp from Pile
!WARNING – Safety!
Visually check that vibration has stopped before opening clamp.
Visually check that crane or piling rig line is tight.
1. Make sure the MAIN (REV-OFF-FOR) switch is in the OFF position and vibration has stopped.
2. Take slack from crane line holding vibrator.
3. Hold the CLAMP switch in the OPEN position to open the hydraulic clamp. Opening of clamp usually takes
about ten seconds.
Underwater Operation
ICE vibrators may be safely operated underwater provided proper preparation is made and certain precautions
are taken.
For operation at depths up to 15’ (5m):
Although ICE vibrators have been used at shallower depths many times without problems, it is recommended
that the procedure below be used whenever operating underwater.
For operation at depths below 15’ (5m):
1. Install a 15 psi (1 bar) relief valve into a gear case fill hole. On vibrators with only one fill hole,
remove the centrifugal breather and attach relief valve there.
2. Air pressure is applied at the other gear case fill hole. The preferred method of pressure control is to use
a diving regulator mounted on the suppressor housing to automatically regulate pressure.
3. Connect an air hose to other the gear case fill hole on the top of the gear case. Use a 2-wire, 3/4” hose
rather than an air hose to prevent crimping. Connect the hose to the regulator and thread hose through
suppressor housing and add to hydraulic hose bundle running to power unit.
4. If air pressure is to be controlled manually rather than using a regulator, pressure must be increased by
0.5 psi per foot of water depth (1 atm per 8 m) as vibrator goes deeper. Pressure must be decreased by
0.5 psi per foot of water depth (1 atm per 8 m) as vibrator gets shallower.
5. At end of job, drain gear oil, flush gear case with diesel fuel, and add new gear oil.
6.
Check gear oil level in sight glass every time the vibrator comes out of the water. If the oil
level is increasing or appears milky, replace the gear oil immediately.
7. It is helpful to install a 1/4” line along with the air hose for connection to a diving pressure gauge.
!WARNING – Equipment!
Water in the gear case will probably result in damage to gears and bearings.
Check gear case sight gauge frequently.