Beta Max MAXIAL TRACK HOIST, Инструкция по эксплуатации и обслуживанию

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Use and Maintenance Instruction Manual
MAXIAL TRACK HOIST
REV. 2.2 (2017)
SAFETY REGULATIONS
Page | 7-3
7.2.2 Electo-mechanical safety equipment
The following electro-mechanical safety equipment is installed on the machine:
—
Slack rope assembly
7.2.2.1 Slack rope assembly
The slack rope assembly is a directional safety device located on the Motor Pack. The slack
rope assembly intervenes when tension on the wire rope cable is lost. The slack rope
assembly is equipped with a swich known as the slack rope limit switch that interrupts the
downward travel circuit. Its purpose is to stop excess unspooling of wire rope cable from the
drum on the motor pack and to prevent a free falling situation in the event that the travel of
the Universal Carriage is obstructed. When the slack rope limit switch is activated only
upward directional travel is available for the operator.
7.2.3 Electrical safety equipment
The following electrical safety equipment is installed on the machine:
—
STOP pushbutton
—
Switch for upward travel
7.2.3.1 Stop pushbutton
The STOP pushbutton is a safety device located on the Handheld Control Pendant. It is a
clearly visible red mushroom locking pushbutton used to stop the machine in case of
emergency. Pressing the locking pushbutton breaks the control circuit power supply to the
main contactor which in turns interrupts the supply power to the up and down directional
contactors. To restore supply power to the machine at the end of the emergency, the
pushbutton has to be rotated, reconnecting its normally closed contact which is opened by
the pressure exerted from when the operator pressed it. The operator must then press the
START/ENGAGE pushbutton once to restore supply power back to the up and down
directional contactors.
7.2.3.2 Switch for upward travel
The switch for upward travel is a directional safety device located on the Motor Pack known
as the Overweight Limit switch. The limit switch interrupts the upward travel circuit. Its
purpose is to prevent an overweighted situation of the machine and stop upward travel if the
Universal Carriage where to hit an obstruction during use. When the Overweight Limit switch
is activated only downward directional travel is available for the operator. Operation and
adjustment for the
Overweight Limit switch is explained in section 10.3.8.