Maber MB500/120-SP, Инструкция по эксплуатации и техническому обслуживанию

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14a. !!! CAUTION - EMERGENCY BRAKE TESTS !!!
The test must be conducted about every 3 months
and/or whenever the machine is assembled by
personnel trained in compliance with the guidelines
outlined below:
To conduct the test the following conditions must be
met:
x
The machine must be firmly secured.
x
The access area under the loading deck must be
completely cleared and cordoned off to prevent
access.
x
The loading deck must be raised to a height of 3.5 m.
above the ground.
x
The machine must be unloaded.
x
The red emergency button must be pressed on the
pendant control.
To simulate the operation of the emergency brake, the
motor brake must be disabled. By disabling the brake,
the loading deck accelerates down until the emergency
brake is applied.
Therefore, this operation must be performed with
utmost care by previously trained and authorised
workers.
Take the following steps:
x
Take the release lever (1) that is screwed on the
motor casing and screw it onto the nearby threaded
hole.
x
Connect the lever (1) with a rope made of nylon or
similar material 6-8 mm. in diameter.
x
Move about 3 m. from the loading deck and pull the
rope. This action will open the motor brake.
x
At this point the machinery always descends faster until it activates the emergency
brake which must be applied 2.5 m. above the ground.. The run, from when the
emergency brakes is applied to when the machinery is definitively locked, must be
around 300 mm.
x
Should the machinery not stop, immediately release the rope, to reactivate the motor
brake (that stops the machine).
x
In this case, immediately contact the manufacturer or authorised dealer, since the
emergency brake operation is not regular.
x
Should the test be positive, load the machine first with 150 Kg. and then with 300 Kg.
and conduct the tests as described above.
x
After checking the efficiency of the emergency brake, release the emergency button,
press the start button ( so as to reactive the emergency brake), then lower the machine
to the ground pressing first the up button and immediately afterwards the down button.
x
The loading deck will stop at the bottom terminal switch.
x
Remove the rope. Unscrew the lever (1) and place it in the casing.
NEVER LEAVE THE RELEASE LEVER COUPLED IN THE BRAKE
Should the braking of both the motor brake and of the emergency brake be either too slow
or too sudden, the brake control must be adjusted by acting as described in the
“NON-
ROUTINE MAINTENANCE” section.
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