Hirschmann iFLEX5 - Pre-Operation Inspection and Calibration Verification

Pre-Operation Inspection and Calibration Verification
© Hirschmann Rev. E 11/12/08 190147_E
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6.5 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.
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.
If the operator cannot see the load handling device approaching the boom nose, he 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 as indicated by
lighting the red warning light (4), sounding the audible alarm and locking the crane movements,
hoist up, telescope out and boom down.
1. Check the anti two-block alarm light (4) and the audible alarm by performing one of the
following tests:
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 to eliminate this
condition.
c) Slowly lower the boom 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 boom lowering function should be stopped. Lower the load handling
device slightly to eliminate this condition.
d) Slowly extend (telescope) the boom 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 boom telescope out function should be stopped.
Lower the load handling device slightly to eliminate this condition.
2. If the crane is equipped with a boom extension, repeat the test procedure for the boom
extension anti two-block switch. Check that the display of the main boom length agrees with
the actual boom length.
3. Check that the display of the main boom angle agrees with the actual boom angles.
4. Check that the display of the operating radius of the crane agrees with the actual radius.
5. Check the load display by lifting a load of known weight.