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“
what is backcheck
”
RELATED FAQS
Question
Answer
What does AVB mean in a closer and which closers are available with this option?
Resolution:
AVB stands for Advanced Variable Backcheck. It is a cylinder option when ordering, that allows backcheck to start at about 45 degrees instead of the normal 75 degrees. 4110, 4210...:
What is the valve on the back of a 4041/4040XP closer used for?
Resolution:
The valve on the back of a 4041/4040XP closer is a "Back Check Selector Valve" that needs to be turned in on "Parallel Arm" mount applications ONLY. :
How do you adjust a door closer?
Resolution:
How to: What are the steps to adjust a door closer? Facts: All LCN and FALCON door closers will have 3 regulating valves and a spring adjustment. All closers with a "Del...:
BACKCHECK
Resolution:
Closer Adjustment, Door Control:
ADVANCED VARIABLE BACKCHECK CYLINDER
Resolution:
AVB, Cylinder Function, 4110 Series Closer:
BACKCHECK SELECTOR VALVE
Resolution:
Valve used to provide proper backcheck location for 4040XP and 4050A parallel arm mounting:
What size Allen wrench is used for Closer adjustment?
Resolution:
LCN does not supply Allen wrenches. The size allen wrenches that LCN uses, are standard sizes that every installer will have in their tool kit. 3/32" Allen wrench for adjusting&...:
How do you slow down the closing speed of the 4600 series operator?
Resolution:
The hydraulic closer underneath the control box has 3 regulating valves (like any 4040 series hydraulic closer). Main Speed - adjust closing speed from 90° open down to 10°. Latch Speed - adju...: