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M037910E

 

 

Safety Caution

   

                                                             

      A-4                                                   

Safety Caution

 

(10) Be careful with radio wave conditions. 

Since the radio-control system uses radio 
waves, it cannot avoid influences of 
electromagnetic interference, radio interference 
and exogenous noise. Such influences may 
hinder the radio wave transmission, stopping 
the crane operation. 
Stopping of the crane during the operation may 
cause dangers. It is especially dangerous 
during a swing operation of the crane. Pay 
attention to the following when operating the 
radio-control system. 
 

・ 

It is dangerous to operate the crane under 
conditions with low radio wave 
transmission, especially during a swing 
operation of the crane since the crane 
intermittently moves. Before starting the 
operation, confirm that there is no problem 
in the crane operation under no load 
condition. 

 

・ 

Too large a distance between the 
transmitter and communication unit may 
not only hinder the radio wave transmission 
but also increase influences of noise. 
Normally, operate within the operating 
radius of the crane. 

 

・ 

Obstacles such as wire nettings and metal 
doors between the transmitter and 
communication unit may hinder the radio 
wave transmission. 

 

・ 

Use manual control operation under 
unfavorable radio transmission conditions. 

 

・ 

Noise from a vehicle’s air-conditioner used 
during the operation may cause an 
intermittent crane operation. Refrain from 
using an air-conditioner when its noise 
influences the radio-control operation. 

 

・ 

Noise from an approaching motorcycle to 
the operation site may cause an 
intermittent crane operation. Confirm that 
there is no motorcycle approaching during 
the operation.

M22652E

(Wire netting)

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M22653

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