Gradall D152, Руководство по безопасности оператора

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Section 6 - Emergency Procedures
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SECTION 6 - EMERGENCY PROCEDURES
6.1 LOSS OF POWER
The engine will de-rate if a problem develops. If this occurs, place the boom in the
boom rest as soon as possible. Make all necessary repairs before continued
operation.
If the machine loses power before the boom is place in the boom rest, follow the
procedures below:
Stowing the boom without engine power
Be sure there is enough clearance for the attachment when the boom is in the boom
rest by measuring the length from the roller bracket on the main boom to the
attachment pivot point. If the distance is less than 6 feet, it will be necessary to
extend the boom with another machine by performing the following procedure:
To extend the boom without engine power
1. Attach a test hose to the test fitting for the retract side of the boom circuit.
2. Direct the rod side oil into a waste container as the boom is SLOWLY pulled out.
3. Once the boom is at the proper extension, secure the telescoping boom to the
main boom using a chain or strap to keep the boom from further movement.
To raise the boom without engine power
1. If the boom needs to be raised to place in the boom rest, it will be necessary to
release the swing brake.
2. Secure the end of the boom to keep the upperstructure from swinging once the
swing brake has been released.
3. Release the swing brake using a port-a-power to pressurize the swing brake to
a maximum of 500 psi.
4. Attach a chain to the end of the telescoping boom to a machine having sufficient
lift capacity and lift height to raise the boom.
5. Be certain that the boom will not contact any obstructions while raising it.
6. Attach a test hose on the rod side of the hoist cylinders to bleed oil into a waste
container.
7. Lift the boom SLOWLY, directing the hoist cylinder rod side oil into a container.