OPERATION

The valve pressure filter switch is located at the pressure filter in the valve pressure circuit, between the closed center load sense pump and the control valve. The sensor monitors the back-pressure created by the filter element when in use. When the back-pressure reaches a setting of 50 psi the switch will trigger and prompt the operator for an element change.

The filter does not have a bypass. The element must be changed at the appropriate time to avoid element damage and system contamination.

The return filter switch is located at the return filter mounted on to the tank top. The fluid returning from the cylinder control valve is filtered before returning to tank at this location. The sensor monitors back-pressure created by the filter assembly while cylinder circuit is in use. When the back-pressure reaches 25 psi the switch will trigger and prompt the operator for an element change.

This filter does not have a bypass. The element must be changed at the appropriate time to avoid element damage and system contamination.

6.5 Operator Interface

The operator selects parameters provided by a menu system in the MDM display. The parameters are used to establish how the boom unit functions. The menu system is comprised of two sections. The first section is setup, the second section powers up the boom control circuit and cutter-head circuit. The following steps outline how to successfully page through the menu system to execute operation.

Executing Set-up

The following representations will outline the steps necessary to execute set-up.

MAVERICK 3/09

Operation Section 3-27

© 2009 Alamo Group Inc.

OPERATION

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Alamo FC-0001 manual Operator Interface, Executing Set-up