AMOT 10GEF, Operation And Maintenance Manual, Page: 48 / 80

48
Electric Actuator
Rev 12 – NOV 2019 OMMG00012
CAUTION
Adjustment of the limit switches affects the calibration of the optional
Positioner. If fitted, it must be re-calibrated before the actuator is
brought into service (refer to OMM47962X00013).
16 If fitted, calibrate the Positioner (refer to the Positioner Manual).
17 Energise the actuator power supply and control circuits and check for
correct operation.
4.8.8 Anti-Condensation Heater Replacement
Replace the anti-condensation heater as follows (Refer to Fig 16, page 49):
WARNING
Lethal voltages are exposed when the actuator cover is removed,
presenting an electric shock hazard to personnel. Electrical power
supplies must be isolated from the actuator before the cover is
removed.
1 Switch off and isolate the actuator electrical power supply.
2 Remove the socket head cap screws and carefully lift off the actuator
cover.
3 Unscrew the motor strap, pull apart and unthread from the slot in the
terminal strip bracket.
4 Slacken the two screws (2) securing the terminal strip bracket to the
actuator base.
5 Slide the terminal strip bracket off the screws and raise to access the
heater (3).
6 Disconnect the heater wires from the terminal strip (refer to Fig 7, page
26).
7 Undo the two screws (4) enough to withdraw the heater (3) from its
mounting bracket (5).
8 Replace the heater in the mounting bracket and secure with the two
screws (4).
9 Connect the heater wires to the terminal strip (refer to Fig 7, page 26).
10 Slide the terminal strip bracket under the two screws (2) and tighten.