SkyAzúl Trimble/LSI GM820, Инструкция по установке и обслуживанию

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6
SerVice anD inStallation Manual
2.3
2.3
anti-Two-Block Switch
anti-Two-Block Switch
Verify the anti-two-block switch is programmed in
the LMS display. Switches shipped with displays
are pre-programmed in the factory. Test: if the
switch has been programmed to the display then
the display will go into two-block alarm when the
switch is released . Press Mute to silence the alarm
until the next two-block event or simulation. If the
switch has not been programmed to the display,
this should be done before proceeding with
installation. See the section how to add a Sensor
to the lMS .
2.3a Switch Bracket installation
Install the LS051 on the pipelayer boom near the tip
with a threaded chain connector. Install a weight and
chain assembly to the bottom eye bolt. The
maximum total weight of the weight and chain
assembly supported by the LS051 anti-two-block
switch is 20 lb.
2.3b chain length adjustment
1. Chain length adjustment № 1 – minimum boom angle
a. At minimum boom angle, with no
additional weight on the hook block and
one part of line only, lift the boom just
enough to have the hook block suspend
and clear the sensor chain and weight.
b. Hoist slowly until the buzzer sounds. Note
the hoisting distance remaining; this
distance must be great enough to allow
the operator and the lockout system, if
installed, to prevent a two-block event. If
necessary, add chain between the sensor
and weight to increase warning distance.
If still insufficient, contact your service
representative.
2. Chain length adjustment № 2- maximum boom
angle
a. Raise the boom to the maximum angle.
b. Hoist slowly as described in
Step 1.b .
Verify that the warning distance is equal
to or greater than that determined at the
minimum boom angle.
3. Chain length adjustment № 3 – speed test:
Lower the boom until the weight height becomes
visually clear to the operator. Repeatedly create
two-block, progressively hoisting faster, to
ensure that the warning and lockout work within
acceptable amount of time and distance.
Increase the length of the chain if needed.
Figure: anti-two-block switch
B) Hook block stops
rising, two-block
prevented with
safety margin
Boom
base
A) Anti-two-block
switch triggers
two-block alarm
Boom
base
Figure: chain length test at minimum angle
Increase
GS050
weight
Figure: chain length adjustment
IMPORTANT!
To increase chain length, only use
lightweight chain.
!
!
SkyAzul, Equipment Solutions www.skyazul.com 301-371-6126