Mec 3072ES, Руководство по обслуживанию и запасным частям

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"3072ES / 3772ES / 3772ES HD" Service & Parts Manual October 2008
Page 3-11
OUTRIGGER FUNCTION
The optional outriggers on MEC Scissor Lifts are a One-Touch Activation system. To deploy the
outriggers, simply push the outrigger toggle switch down until the outriggers level the unit and the
engine returns to idle. You are now ready to lift the platform. The outrigger control module is a “smart”
unit, which will level the unit in all but extreme terrain so you don’t have to attempt to level it yourself.
Operational Characteristics
• To deploy the outriggers, push the Outrigger Switch down and hold until the electric motor
stops. The unit will self-level.
• The outrigger legs can not be operated individually.
• The outriggers system will not operate when the platform is elevated above approximately
10 feet (3 m).
• Travel is locked out when the outriggers are deployed. A Drive Indicator Light, above the outrig-
ger switch, will illuminate when the outriggers are fully retracted.
• The electric motor will turn off when the outriggers are fully retracted and the drive indicator
light will signal that the outriggers are fully retracted.
• If the slope of the terrain is in excess of the outrigger’s leveling capabilities, the outrigger con-
trol system will continue to attempt to level and the electric motor will not turn off. In this case, if
the platform remains outside of the pre-described tilt sensor parameters, the unit will not el-
evate above 6 feet (2 m) and the alarm will sound, indicating the out-of-level situation.
• The outrigger system uses a Top-out limit switch and a Pressure switch on each leg to monitor
their respective positions.
• Each outrigger leg uses a Retract valve and an Extend valve to control cylinder stroke. These
are located under the protective cover atop the outrigger leg.
• A 4-way, 3-position valve, on the outrigger hydraulic manifold controls the direction of fluid flow
to the outrigger legs.
• The GP400 Control Module controls all outrigger valve and interlock duties as well as sensing
unit level.
• Diagnosis of the GP400 Control Module is possible by counting the number of flashes from the
red LED and referring to
Section 4: Troubleshooting. Diagnosis and calibration of the GP400
module can also be done through the use of the EZ-Cal scan tool MEC part # 90888. (See
Section 4: Troubleshooting).