18
MANUAL EXTENSIONS
18.1 Generality
These are additional extensions, which are placed in the hydraulic extensions of
the crane and of the hydraulic jib and secured by locking pins.
Manual extensions have a maximum capacity independent from the crane confi-
guration as shown on the capacity plates.
(!) ATTENTION (!)
Manual extensions can be extracted from the rest position and be operative, once
the security pins have been removed, with the outer boom in sliding position.
(!) ATTENTION (!)
- Do not stand in front of stabilisers during operation!
Operate from a lateral position in respect of the extension movement of the
manual extensions; operation from the frontal position is dangerous.
- Verify that the area is suitable for this operation and there are no unauthorized
persons in the working area.
- Do not permit the extension to slide out at speed as this will damage the stroke
end stops.
- Do not try to align the holes (slots) for the locking pins with your fingers; always
use a suitable tool.
- When manual extensions are in place, fit the locking pins and secure them
with the check pins to prevent accidental escape.
(!) Always remember that when operating with implements, their tare weight
must be deducted from the capacity of the crane.
18.2 Lifting moment limiting device “ELECTRONIC” for
the manual extensions (valid starting from the
version 3.0 of the software)
HOW TO CONTROL THE LOAD HOOKED ON MANUAL EXTEN-
SIONS.
This procedure aims to calculate the weight applied on the manual extensions.
It is necessary to apply the same procedure EVERY TIME you use the manual
extensions.
For its correct execution, follow meticulously the instructions reported HERE.
The extension limiting device IS NOT ALWAYS ACTIVE; on the contrary of the
crane limiting device, it responds about lifting a load only if QUESTIONED, the-
refore only if you enable the procedure. Remember that the procedure is
manual. In any case always refer to the capacity plates of the crane.
The limiting device for manual extensions, when interrogated, compares the real
weight applied on the lifting hook (inclusive of all the accessories attached) with
the value reported on the capacity plates. Such evaluation is effective only
during the execution of the procedure, therefore it is prohibited to add weight or
replace loads after the procedure is completed; in such case the procedure shall
be executed again from the start.
In the case one or more manual extensions are added or removed with respect
to the initial installation, it is COMPULSORY to have the crane initial configura-
tion file modified accordingly (See Authorised Shops).
Before activating the procedure, extend and lock by a pin not only the manual
extension you intend to use but also the preceding ones.
18
USE OF IMPLEMENTS
GR2_45»60_3_4_5
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