LiftMaster SW470 SW490 S3 BOARD Manual - Page 22

22 Manual Operation and System Check-Out Manual Operation and System CheckOut SW470 Manual Gate Operation Remove the (2) black plastic knobs which secure the control arm assembly to the operator. The gate will swing freely when the arm assembly is removed. Preliminary System Check Out Before adding any options, accessories or adaptions, it is highly recommended that you check out the system and its programs. If you have not already done so, temporarily connect a three button station to the operator. Test for proper open, stop and closing of the gate. Test the internal obstruction sensor system. Test for proper operation of all programs that were programmed into the system. Once everything checks out okay, then proceed to adding on the accessory items for this job site. IMPORTANT NOTES: We recommend that, if more than one accessory item is used, after each one is attached check it for proper operation before adding the next. Make sure that the two (2) gate warning signs are secured to the gate. One on the inside and one on the outside. They must be easily seen. Doc 01-G0665 Rev C