LiftMaster HS670 HS670 GL BOARD Manual - Page 10

I N S TA L L AT I O N VENT CAP 1. Remove the threaded plug from the pump tank. 2. Install the vent cap. NOTE: Never run the operator without the vent cap installed. Important: Do Not Use Cover Handles To Move Unit LIMIT SHOES NOTE: The limit shoes are slotted, so minor adjustments may be made later for the fine tuning of the fully open and close positions. Also, note that the limit switches themselves may be slightly adjusted up or down. 1. Cut wire ties to release limit switch levers and RPM assembly to the up right position. These items are held down by wire ties to facilitate for initial gate installation. 2. Manually open the gate to the full position. 3. Locate the open limit switch lever and mark its position. 4. Manually close the gate to the full close position. 5. Locate the close limit switch lever and mark its position on the drive rail. 6. Manually open the gate about halfway. Measure and drill holes to mount limit shoes 7. Secure both limit shoes to underside of drive rail. NOTE: It is highly suggested that gate stops be installed to the gate at the fully open and closed positions. See next page for installation instructions. Remove Bolt To Take Cover Off Loosen Screw To Remove Cover Threaded Plug Vent Cap Tank Top View Mark Centerline RPM Assembly Mark Centerline Drive Rail Limit Switch Top View 1-1/16" Side View 2" 3" 1/4"-20 Screw Limit Shoe Centerline Marks Limit Switch 2" 9/32" Dia. 3" Holes Washer and Nut Bottom of Drive Rail 10