Snorkel AB48HSRT-sn4701+ - Manual (Page 24)

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2. Emergency Lower.
In the event of a power failure, There are two ways of Safely lowering the
basket.
Emergency Lowering, method one
The operator or someone on the ground, can lower the booms to a safe
position by activating the Emergency lowering selector switch both ways, o n
the Basket Control Panel and the Ground Control Panel.
The Emergency lowering valve will automatically close when the
switch is released.
If the Emergency Lower is used, The TOP and BOTTOM BOOMS must
be fully extended then fully lowered before work can continue.
After Emergency lowering, any further POWERED lowering could
cause an AIRLOCK in the hydraulic system.
This could cause the Hydraulic operations to Fail.
ALL BOOMS MUST BE FULLY EXTENDED/RAISED, THEN LOWERED
BEFORE WORK CAN RECOMMENCE.
If the Emergency Lower is used due to a machine defect, DO NOT use
the machine, Contact your local UpRight representative.
1
The Flick Boom cannot be lowered by activating the Emergency
Lowering Switch.
EMERGENCY CONTROLS