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| Illustration 1 | g01189065 |
The Bypass Manifold is Located Under the Operator Platform on the Left Side of the Machine. (1) Vibratory drive solenoid (2) Vibratory manifold | |
The vibratory pump directs oil to the inlet port on vibratory bypass manifold (2). The manifold is located on the left side of the machine under the operator platform.
Vibratory drive solenoid (1) is installed in vibratory manifold (2) .
The vibratory drive solenoid is de-energized under any of the following conditions:
- The vibrator switch on the active instrument panel is in the OFF position.
- The vibrator switch on the right screed operator station is in the OFF position.
- The paving parameters have not been met.
The following conditions must be met in order for vibratory drive solenoid (1) to be energized:
- The vibrator switch on the active instrument panel is in the ON position.
- The vibrator switch on the right screed operator station is in the ON position.
- The paving parameters have been met.
- The vibrator enable relay is energized.
Vibratory drive solenoid (1) operates the vibratory control spool. The vibratory control spool contains a dump valve and a relief valve. When the engine is running and the vibratory system is not in operation, the dump valve directs oil from the pump into the charge circuit of the material feed system.
The relief valve in the vibratory control spool limits the maximum pressure in the vibratory system to 10000 ± 100 kPa (1450 ± 14 psi) when the system is in operation. The relief valve directs the excess pump flow into the charge circuit of the material feed system.
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| Illustration 2 | g01189068 |
Left Side of Screed (3) Vibratory control valve (4) Flow control valve (5) Pressure tap | |
Vibratory control valve (3) is mounted on the left side of the screed. The ports on the valve are marked for identification.
Vibratory control valve (3) is equipped with flow control valve (4). The flow control valve regulates the amount of pump supply oil that is sent to the vibratory motors when the vibratory system is in operation. As the flow control valve is turned clockwise, the volume of oil that is sent to the vibratory motors decreases. As the flow control valve is turned counterclockwise, the volume of oil that is sent to the vibratory motors increases. The volume of oil that is directed through the motors determines the vibratory frequency.
The pressure in the vibratory system can be measured at pressure tap (5).