Hirschmann PRS 40 EZ, Руководство оператора и по обслуживанию

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Operator’s / Service Manual, PRS 40 EZ
© PRS 40 EZ REV A 03/16/06 190201_A
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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 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 system not function properly as indicated by flashing the warning
symbol, sounding the audible alarm and locking the crane movements, hoist up, telescope out and
boom down. ( if lockout is installed)
Check the anti two-block 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 display should flash.
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 display should flash 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 display should flash and the
boom lowering function should be stopped. Lower the load-handling device slightly to eliminate
this condition.
If the A2B warning symbol fails to flash and audible alarm does 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.
5. If the crane is equipped with a boom extension, repeat the test procedure for the boom extension
anti two-block switch.