Emergency Controls; General; Emergency Procedures - Incapacitated Operator; Emergency Procedures - Machine Failure - nifty Heightrider HR21 Operating/Safety Instructions Manual

HR Series
Operating & Safety Instructions
5

Emergency Controls

5.1

GENERAL

CHECKING THE OPERATION OF THE EMERGENCY CONTROLS EVERY DAY
AND/OR BEFORE EACH SHIFT IS AN ESSENTIAL PART OF THE OPERATOR'S
DUTIES
The operator and all ground personnel must be thoroughly familiar with the location and operation of
the EMERGENCY CONTROLS.
5.2 IN THE EVENT OF AN INCAPACITATED OPERATOR
Turn the Base/Platform selector at ground control station to ground (clockwise). Lower on ground
controls as detailed under Section 4.2 Ground Control Operation.
5.3 IN THE EVENT OF MACHINE FAILURE
If all machine power is lost, the Manual Hand pump can be used to provide the hydraulic power to
manoeuvre the machine. Lower platform using hand lever controls at ground control station. If initial
movement of the machine allows the master alarm to reset, normal controls will be available. This is
then the fastest method of lowering the platform to the ground.
Note: If the machine is fitted with a cage overload system, and the cage comes into contact with a
fixed object whilst operating at height, this would be detected as an overload condition. All power to
the machine controls would be lost, requiring the machine to be recovered using the Manual Hand
Pump. It is sufficient for the cage to be manoeuvred away from the collision point to re-set the cage
weigh mechanism, thereby restoring normal machine operation. The cage could then be lowered using
the controls as described previously.
Opening the nearside machine canopy reveals the ground controls, plus the dedicated hydraulics for
the Emergency recovery of the machine.
40
English/USA – 11/09
Original Instructions