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S and L Valve Adjustments. To increase the "S" (sweep) or "L" (latch) speeds, the valves can be turned clockwise to increase speed, and The closer body drawings with valves can help confirm identification. Not all discounted closers are represented in this document. Note: "669G" is a UL listingHold Open Door Closers. Installation Instructions These instructions should be followed Closer on frame face on stop (push) side of door. See Page 3.
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