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Care of your operator – Chamberlain Security+ 3900PLD User Manual

Page 22

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CARE OF YOUR OPERATOR

MAINTENANCE SCHEDULE

Once a Month

Manually operate door. If it is unbalanced or binding, call

a trained door systems technician.

Check to be sure door opens & closes fully. Adjust limits

and/or force if necessary (see Adjustment Steps
1 and 2).

Repeat the safety reverse test. Make any necessary

adjustments (see Adjustment Step 3).

Once a Year

Oil door rollers, bearings and hinges. The operator does

not require additional lubrication. Do not grease the door
tracks.