The J4C has 2 operating modes, automatic and manual, the required mode is selected by using a
lever on the lower half of the actuator housing (Fig 7).
The 2 positions are marked:
AUTO = Automatic operation
MAN = Manual operation
Warning:
Do not remove the selector lever securing screw, as this will allow its internal mechanism
to become loose and will cause irreparable damage to the actuator’s gearbox.
Removing this screw will invalidate the warranty.
When “AUTO” position is selected:
The hand wheel, of models 20,35,55, and 85 rotates automatically, it is very important not to block
it, otherwise the actuator could suffer unrepairable damages.
4. EMERGENCY MANUAL OVERRIDE FACILITY
Fig. 7
J4C 20 TO 85
Fig. 7
J4C 140 TO 300
When “MAN” function is selected:
1 - The electronic system cuts the power to the motor after a few seconds.
2 - The mechanical connection between the motor and the output shaft is disconnected.
3 - The desired position can be achieved by using the manual override lever or the hand wheel.
4 - There are two ways to reactive the motor after being isolated whilst in “MAN” position:
a) With the actuator in “MAN” function, turn the hand wheel to one of the end positions (open
or close). If the end position switch is activated the motor stops. Now change the manual
override from “MAN” to “AUTO” , and the actuator is ready to operate automatically again.
b) Change from “MAN” mode to “AUTO”. Deactivate the supply voltage for a few seconds
which resets the actuator and it could operate automatically again.
ATC is in charge of the automatic control of inner temperature. It is ON while the actuator is
connected to the power supply. Therefore, we strongly recommend to maintain the power
supply connected to the actuator, otherwise the ATC system would remain disconnected.
04
INDEX
ENGLISH
- J4C 20 TO 300 INSTALLATION INSTRUCTIONS
