Safety Information; Assembly; Handwheel Operation And Declutching - Bernard Controls Range EZ Serie Instructions De Mise En Service

1 SAFETY INFORMATION

This device complies to current applicable safety standards. Installation, maintenance and use of
this actuator will have to be done by skilled and trained staff only.
Please read carefully the whole document prior to mounting and starting-up.

2 ASSEMBLY

Actuator should be secured directly to the valve using proper bolts or via a proper interface.
After assembly, the actuator can operate in any position. However, cable glands should not be
oriented upwards (loss of water tightness) and the motor will preferably not be positioned at the
bottom (potential internal condensation trap)
Note 1 : Do not handle the actuator by handwheel, it could damage the gearworm.
Note 2 : If the actuator was delivered mounted on the valve, the basic settings should have been done.
Note 3 : see §.7 for details on storage precaution prior to starting-up.

3 HANDWHEEL OPERATION AND DECLUTCHING

In general, the handwheel does not turn during electrical operation. Even if turning, the solid
handwheel does not have any protruding part and therefore does not present any risk of any kind
for the operator. Moreover, for the actuators with the highest torque, the torque limit system
brings an additional level of protection.
EZ60 models:
These actuators are equipped with declutchable intermediate gears. By moving the clutch lever, the
motor is physically disengaged from the gears. Once the manual handwheel operation has been
completed, do not forget to clutch the motor back. Otherwise, once started-up, it would run and heat
up until the motor thermal protection switch closes. If repeated, these conditions can generate a motor
breakdown .
EZ4 to EZ15 models:
These actuators are equipped with a manually declutchable handwheel.
To operate manually the actuator, turn while pulling the handwheel
in order to mechanically engage it.
To declutch the handwheel, just push it back towards the actuator
body.
EZ100 to EZ1000 models:
These actuators are provided with an automatic declutching hand-
wheel, with motor drive priority. In order to operate manually the
actuator, turn the arrow of the handwheel clutch button in front of the
triangular sign on the housing (it might be necessary to turn the hand-
wheel by a few degrees to release the claws). When the motor starts,
it returns automatically into declutched position.
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