Apollo 816 LA Linear Actuator
Installation Reference Manual
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There are two internal limit switches in the 816 actuator and must be set to match the desired gate limits
by the installer.
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Two limit adjustment screws on the rear of the 816 actuator motor (see Fig-11A, below) are used to make
these adjustments; one for the limit at the retracted position and the other for the extended position.
’
To set the limits, follow instructions on the following pages for the controller being used (936/1050 or
Mercury 310) and refer to Diagram 6-1 (page 22) during the procedure.
Fig-11: 816 Extend and Retract Limit
Screws
Retract Screw
Less
(CCW)
More
(CW)
Extend Screw
More
(CCW)
Less
(CW)
SECTION 6: SETTING 816 OPEN/CLOSE LIMITS
CAUTION
’
Ensure power is properly applied to the controller per the associated installation manual.
’
Do not extend 816 extension tube too far or risk damage to the actuator. Maximum tube length is 66 inches
(1.65 m).
IMPORTANT!
These instructions are ONLY for adjusting the location of limit sensors inside the Apollo
816 actuator. After setting these limits, see the “Learn Limits” procedure in the appropriate
controller manual for instructions on how to enable the controller to “learn” these limits.
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