Mec 4046SE - Page 29

Page 24 SE
AC
Slab Series - Service & Parts Manual
March 2022Section 10 - Maintenance
Emergency Stop
A properly functioning Emergency Stop system is essential for safe machine operation. An improperly
operating red Emergency Stop button will fail to shut off power and stop all machine functions,
resulting in a hazardous situation.
As a safety feature, selecting and operating from the ground controls will override all platform controls
except the platform red Emergency Stop button.
Turn the key switch to ground control and turn the red Emergency Stop button clockwise to the
on position at both the ground and platform controls.
Push in the red Emergency Stop button at the ground controls to the off position.
Result: No machine functions should operate.
Turn the key switch to platform control and turn the red Emergency Stop button clockwise to the
on position at both the ground and platform controls.
Push in the red Emergency Stop button at the platform controls to the off position.
Result: No machine functions should operate.
NOTE: The red Emergency Stop button at the ground controls will stop all machine operation, even if
the key switch is switched to platform control.
Key Switch
Proper key switch action and response is essential to safe machine operation. The machine can be
operated from the ground or platform controls and the activation of one or the other is accomplished
with the key switch. Failure of the key switch to activate the appropriate control panel could cause a
hazardous operating situation.
Perform this procedure from the ground using the platform controls. Do not stand in the platform.
Turn the red Emergency Stop button clockwise to the on position at both the ground and
platform controls.
Turn the key switch to platform control.
Check the up/down function from the ground controls.
Result: The machine functions should not operate.
Turn the key switch to ground control.
Check the machine functions from the platform controls.
Result: The machine functions should not operate.
Turn the key switch to the off position.
Result: No function should operate from either control station.
Test the Indoor/Outdoor
Note: Perform this test from the ground with the platform controller. Do not stand in the platform.
Make sure there is safe height clearance and no overhead obstruction or electrical power
wires.
Turn the key switch to ground control position.
Turn the Indoor/Outdoor switch to Outdoor position.
Move up and hold the platform up / down switch. Raise the platform to the highest position and
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