User:Jstapko/EngLab/DoorCloser

Yale 6900 Door Closer Mechanism

Introduction
Mr. Foerster obtained a used automatic door closer mechanism from HCC Plant Ops on Octoberr 16, 2014. Plant Ops said it was working intermittently. It is a Yale (or norton, not sure exactly) model 6900.

Warnings

 * 1) Compressed Spring - there is a very powerful spring in the end of the housing opposite the electronics. Use extreme care if or when disassembling.  Learn as much in advance as possible about the risks, and use only the proper tools.
 * 2) Hydraulic Oil/Injection Injury - The door closer is operated by a hydraulic pump compressing fluid, which then pushes on a piston to turn a gear. Be aware that disassembly could cause fluid leaks, and if fluid leaks under high pressure, it can cause an [injection injury].  All relevant cautions must be taken to prevent this.

Images

 * 1) cutaway view of Cal-Royal CR8015 closer Clearly shows basic principle of door closer mechanism, including return spring.
 * 2) cutaway view of door closer Identifies valves and shows spring adjustment.

Videos

 * 1) "ABLOY Door Closer DC335.mp4" Shows how sdpring and hydraulic valves work
 * 2) "Door Closer Basics" haven't watched yet

Links

 * 1) Norton Door Closer wiring diagrams -Not sure which model we have, but this might have the wiring for our model
 * 2) Identifying Norton door closers May help to determine exactly which model we have
 * 3) Norton 6900 catalog Filled with useful information, including:
 * 4) *parts identification
 * 5) *what the order codes mean
 * 6) *DIP switch settings
 * 7) *Timer pots
 * 8) *jumper wiring
 * 9) Norton 6900 wiring instructions -includes:
 * 10) *illustration of unit with parts labeled
 * 11) *PCB parrts layouts
 * 12) *wiring diagrams
 * 13) *switch settings
 * 14) *timer pot function descriptions
 * 15) *wire color code descriptions
 * 16) ELS Repair Kit - Explains removal, replacement, and adjustment of the Electronic Limit Switch, the potentiometer like device mounted on the side and connected to a belt.
 * 17) Norton 6900 installation instructions - Explains function and adjustment procedures of some of the hydralic valves, including Back Check, Sweep, and Latch.