AMOT 10GEF, Руководство по эксплуатации и обслуживанию, Страница: 42 / 80

42
Electric Actuator
Rev 12 – NOV 2019 OMMG00012
1 Switch off and isolate the actuator electrical power supply.
2 Remove the socket head cap screws and carefully lift off the cover.
Note
The cams are adjusted until the limit switches operate (indicated by an
audible click). In conditions of high noise levels, an electrical continuity
circuit should be connected across the relevant switch to give a visible
indication of switch operation (refer to Fig 7, page 26 for terminal
numbers).
3 Open limit switch adjustment :
3.1 Manually wind the actuator fully counter-clockwise to the mechanical
end stop.
3.2 Wind the manual handle clockwise to take up backlash (approx ¼
turn).
3.3 Wind the manual handle clockwise a further two complete turns.
3.4 Loosen the grubscrew (23) in the lower limit switch cam (13).
3.5 Turn the cam until the limit switch is on the flat of the cam (switch
not pressed).
3.6 Slowly turn the cam clockwise until the first switch (Open limit
switch ‘OLS’) just operates.
3.7 Tighten the grubscrew (23).
3.8 Repeat from step 3.1 without loosening the cam grubscrew to check
that the first switch operates when the manual handle is turned two
complete turns (after take-up of backlash).
3.9 Check that the second switch on the same cam (Aux open limit
switch ‘AOLS’) operates after a further clockwise ½ turn of the
manual handle.
Note
It is not possible to adjust the AOLS separately from the OLS.
4 Close limit switch adjustment:
4.1 Manually wind the actuator fully clockwise to the mechanical end
stop.
4.2 Wind the manual handle counter-clockwise to take up backlash
(approx ¼ turn).
4.3 Wind the manual handle counter-clockwise a further two complete
turns.
4.4 Loosen the grubscrew (10) in the upper limit switch cam (11).
4.5 Turn the cam until the limit switch is on the flat of the cam (switch
not pressed).
4.6 Slowly turn the cam counter-clockwise until the first switch (Close
limit switch ‘CLS’) just operates.