Upright POWERED ACCESS TL34, Service Manual

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PRE-START CHECKS
10
With the top and bottom booms raised approximately 500mm each, the
unit switched off and the two Emergency Lower valves under the control
cabinet open, check:
The emergency lower valves located on the lift cylinders lower the boom
when pulled in a slow and controlled manner and that the boom movement
is stopped on releasing the valve
To Reset the hydraulic system after checks;
Fully extend the Outriggers while still maintaining Level. (check the bubble)
Using the ground controls, fully extend both Top and Bottom Booms.
All rams must be fully extended at the same time before returning them to
their transit position.
If the Emergency Lower is used during normal operation, DO NOT
use the machine, Contact your local UpRight representative .
Remember to close the two ball valves after this check
.
6. Functional Checks.
a. Move the machine, if necessary, to an unobstructed area to allow for
elevation.
b. Pull both Emergency stop Switches to the on position.
c. Refer to ‘setting up’ and deploy the outriggers.
d. From the Ground Controls test each machine function, lift and lower
both Booms.
e. With outriggers deployed, under load and top or bottom boom raised
approximately 50mm, it must NOT be possible to operate the outrigger
controls for hydraulic outrigger options.
f.
i. Emergency stop switches must operate correctly. Check that each stops the
machine’s controls and that restarting is prevented until all stop switches
are unlatched.
See Fig 3
g. From the cage controls test each machine function, lift and lower both Booms
and slew clockwise and counterclockwise.
h. Return the Booms to the stowed position.