10
WARNING:
Ensure all power supplies are
isolated before removing actuator
covers.
Check that the supply voltage is the
same as that stated on the actuator
nameplate.
A switch or circuit breaker must be
included in the wiring installation to
the actuator. The switch or circuit
breaker shall be mounted as close
to the actuator as possible and
shall be marked to indicate that it
is the disconnecting device for that
particular actuator. The actuator must
be protected with a suitably rated
overcurrent protection device as defined
on the applicable wiring diagram.
6.1 Earth/Ground Connections
An M8 X 1.0 earth stud is located
adjacent to the conduit entries for
attachment of an external protective
earthing strap. An internal earth terminal
is also provided on the terminal bung,
however it must not be used alone as
the protective Earth Connection.
6.2 Removing Terminal Cover
Using a 6mm hexagon key loosen the
four captive screws evenly. Do not
attempt to lever off the cover with
a screwdriver as this will damage
the o-ring seal and may damage the
flamepath on a certified unit.
Fig. 6.1.
A plastic bag with the actuator contains
the following:
• Terminal screws and washers.
• Spare cover o-ring seal.
• Wiring diagram.
• Instruction book.
Fig. 6.2.
6.3 Cable Entry
The four cable entries on the actuator
terminal housing are tapped ½” NPT.
Only appropriate certified Explosion-
Proof entry reducers, glands or conduit
may be used in hazardous locations.
Remove any red plastic transit plugs.
Make cable entries appropriate to
the cable type and size. Ensure that
threaded adaptors, cable glands or
conduit are tight and fully waterproof.
Seal unused cable entries with a steel or
brass threaded plug. In hazardous areas
an appropriately certified threaded
blanking plug must be used.
6
Cable Connections
