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SYNTHESIZED SETS
USER MANUAL
30
6.2. MAINTENANCE OF THE RECEIVER
Maintenance of the receiver is identical to the transmitter. The following parts must be checked:
• The antenna connection (check that it is clean and free of rust).
• The connection between the receiver and electrical equipment of the machine.
• Contacts of the manoeuvre relays (check that they are clean and free of coal dust).
• The correct working order of the active and passive safety circuits.
• The correct working order of the led display messages.
• The receiver cover and packing gland should be properly sealed.
• The firm fastening of the whole unit.
To check the working order of the active safety circuit, simply press the STOP BUTTON while the
remote control is on. The general contactor should drop immediately.
To check the working order of the passive safety circuit, remove the battery from the transmitter and
the general contactor should drop within 1.9 seconds.
6.3. MAINTENANCE OF THE CHARGER
Maintenance of the charger is carried out at a similar frequency to the set. The following parts should
be checked:
• Contacts and battery holders (which should be clean and free of rust).
• Springs (ensure that they are enough taut to guarantee contact).
ATTENTION:
IF YOU DETECT ANY ANOMALY IN THE WORKING ORDER OF THE SET,
IT SHOULD BE IMMEDIATELY SWITCHED OFF. REPAIRS SHOULD BE
CARRIED OUT BY A TECHNICAL SERVICE AUTHORISED BY ITOWA.
ORIGINAL ITOWA SPARE PARTS SHOULD ALWAYS BE USED. IT IS NOT
PERMITTED TO ALTER THE SPECIFICATIONS OF THE RADIO
FREQUENCY SYSTEM OR THE CIRCUITS INVOLVED IN THE SAFETY
SYSTEMS.
If you have any doubt or enquiry, contact our Technical Assistance Service or any of our authorised
technicians.
6.4. CHARGING THE BATTERIES
The batteries supplied with ITOWA equipment do not have a memory effect, meaning that they can
be charged without having to the totally flat. In order to lengthen their life span, it is recommended to
use one battery in the morning and another in the afternoon. One battery can then be charged while
the other is being used.
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