PAT DS 50, Руководство оператора

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Operator's Manual DS 50 / 0002 10
4.2 Pre-Operation Inspection and Calibration Verification
After the electrical connections have been checked to insure that the system is properly connected for the
crane configuration, the following checks shall be made:
1. Check the electrical wiring connecting the various parts of the system for physical damage.
2. Check the anti two-block switches and weights for free movement.
3. Check the spring-loaded cable reel to be sure it is free to rotate, has tension and the cable is reeled
properly.
The following tests shall be performed with care to prevent damage to the machine or injury to
personnel. Proper functioning of the system requires successful completion of these tests
before operating the machine.
4. Check the anti two-block alarm light (4) and the audible alarm by performing one of the following tests
a, b, or c. If the crane is equipped with a boom extension, perform the test procedure on both the main
boom and boom extension anti two-block switches.
When checking system the operator must use caution. If the operator cannot see the load-handling device
approaching the boom nose, he/she shall have an assistant (signal person) watch the load handling
device. The operator shall be prepared to stop the machine immediately should the LMI system not
function properly. Proper operation will be indicated by:
•
lighting the red warning light (4)
• sounding the audible alarm
• locking out of the hoist up and telescope out functions
•
and if the overload shutoff option is installed, a lockout of the boom down function will occur
a) By manually lifting the weight attached to the anti two-block switches. When the weight is lifted, the
audible alarm should sound, the anti two-block alarm light (4) should light.
b) Slowly raise the main boom load-handling device to create a potential two-block condition. When the
load-handling device lifts the weight, the audible alarm should sound, the anti two- block alarm light (4)
should light and the motion of the load handling device should be stopped. Lower the load-handling
device slightly or telescope the boom in to eliminate this condition.
c) Slowly extend (telescope) the boom to create a potential two-block condition. When the load-handling
device lifts the weight, the audible alarm (17) should sound, the anti two-block alarm light (24) should
light and the boom telescope out function should be stopped. Lower the load-handling device slightly or
telescope the boom in to eliminate this condition.
NOTE: If the crane is equipped with the overload shutoff option, a two-block condition will also lockout the
boom down function. If operating properly, the lockout feature will always permit operation of the hoist
down, telescope in, and boom up functions.
If the light and audible alarm do not function as described and the crane movements are not
stopped, the system is not working properly. The malfunction shall be corrected before
operating the crane.