Stellar Industries TELESCOPIC CRANE EC2000 - Manual (Page 10)

6 EC2000 Owner’s Manual
Definition of Stability for the Stellar Telescopic Crane Products:
A truck is stable until the load cannot be lifted off the ground with the winch, without
tipping over the truck. Every Stellar crane installed must be tested for stability to
determine the actual load capacity of the final truck package. The actual test data
must be recorded and supplied with the truck at the time of in-service and should be kept
with the truck at all times. The following procedure will test the truck package for stability
and will provide a stability capacity chart. The load limit information shown on the
stability capacity chart is formulated on 85% tipping.
Set Up:
1. Locate the truck on a test course in position for loading and engage travel brakes.
2. Set stabilizers so that they make contact with firm, level footings.
3. Operate the crane under partial load to assure operator proficiency and proper
machine function.
Test Procedure
1. Rotate the crane into Zone 1 position.
2. With the crane fully retracted and the boom horizontal, winch the test weight off the
ground. Note: Keep weight within six inches of the ground at all times.
3. Extend the boom outward until full extension has been reached or until the truck
becomes unstable (Again, use the winch to keep the weight within six inches of the
ground.)
4. If the boom goes full extension without becoming unstable, the crane is termed stable
for this zone and 100% can be written in the Zone 1 data box.
5. If the truck becomes unstable prior to going full extension, retract the boom until the
truck becomes stable and measure the horizontal reach in this position (center of
rotation to boom tip). This is the stable horizontal reach for this zone. Stable horizontal
reach divided by Maximum horizontal reach multiplied by 100 equals the percentage
of rated capacity for this zone. Use the following formula to determine the percentage
of rated capacity:
6. Record this number in the data box for Zone 1. This is the revised capacity due to
stability for this zone.
7. Repeat this procedure for each zone until the worksheet is completed.
8. This is the revised capacity based on stability of this package.
EC2000 Stability Data
Max Horizontal Reach: 180” (From the center of rotation to boom tip)
Stability Test Weight: 875 lbs.
Stability Procedure