A Senior Swing operator can be hard to open manually if "Power Boost" feature is turned on, and programmed to the Cn (continuous) setting. To make the door easy to open manually, turn the "Power Boost" feature to OF (off). If you still require some additional closing force at latch to close against wind/air pressure you can program Power Boost to be on for just 1 through 5 seconds by selecting 01, 02, 03, 04, or 05, whichever will give you enough to get door closed and then power boost will shut off (after the programmed time) allowing the door to be opened with less force.
See here for Sr Swing Control Instructions.
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