Section 3 • Scheduled Maintenance Procedures
REV B
November 2005
Part No. 84700
GR-12 • GR-15 • GR-20
3 - 13
3 Confirm proper tension of each sequencing
cable by measuring the height of the spring
between the nylock nut and the upper
sequencing bracket.
Result: The measurement is within
specification. Proceed to step 7.
Result: The measurement is not within
specification. Proceed to step 4.
Sequencing cable spring specification
Measurement, compressed
15
/
16
inch
2.4 cm
4 Adjust the spring compressed length by turning
the nylock nut clockwise to decrease the spring
length or counterclockwise to increase the
spring length.
Component damage hazard. Do
not compress the spring to less
than specification.
5 Raise and lower the platform through three
complete cycles.
6 Repeat this procedure beginning with step 3.
7 Repeat steps 3 through 5 for each sequencing
cable as required.
B-7
Test the Emergency Stop
A properly functioning Emergency Stop 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 the ground controls
will override the platform controls,
except the platform red
Emergency Stop button.
1 Turn the key switch to ground control and pull
out the red Emergency Stop button to the on
position at both the ground and platform
controls.
2 Push in the red Emergency Stop button at the
ground controls to the off position.
Result: No machine functions should operate.
3 Turn the key switch to platform control and pull
out the red Emergency Stop button to the on
position at both the ground and platform
controls.
4 Push down the red Emergency Stop button at
the platform controls to the off position.
Result: No machine functions should operate.
The red Emergency Stop button at
the ground controls will stop all
machine operation, even if the key
switch is switched to platform
control.
CHECKLIST
B
PROCEDURES
