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Hold open buzz
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Question
Answer
Why is the Von Duprin PS873 power supply buzzing or chattering?
Resolution:
Some transformers in the power supplies provide a little humming noise and that is normal. If the humming in Von Duprin PS873 power supply is loud follow these steps. Remove the load from the outp...:
How do you adjust the hold open time on a 4600 (4630/4640) operator?
Resolution:
To adjust the hold open time on a 4600 (4630/4640) operator:Press the "MODE" button on the control box 1 time to get into programming mode. The "YELLOW" mode indicator LED next to "HOLD OPEN TIME" ...:
What are Hold Open Closers & Magnets?
Resolution:
Hold Open Closers & Magnets (Fire/Life safety products) provide a wide range of solutions. Single or multi-point hold open closers Utilize an electromechanical closer. Hold the door o...:
How do I wire an EL device to normally hold open the latch and release it during a fire alarm?
Resolution:
Use a normally closed fire alarm as the input to the power supply option board (PS873-2 or PS914-2RS), this will hold the latch retracted. During a fire alarm, the contact will open, dropping...:
What would cause a 4040SE not to hold the door open?
Resolution:
A 4040SE would not hold the door open if it has : No Voltage or Improper Voltage. Check that the track has proper voltage going to it (24V AC/DC or 120V AC). If 120 volts is supplied...:
What degrees of opening can a 4110 EDA be templated for?
Resolution:
The 4110 EDA/HEDA can be templated for 100°, 140°, and 180° hold open. The hold open adjustment can be set to hold the door at any position (degree) up to the maximum door opening angle. For "Wi...:
Can a magnet, or sentronic device, be released and close the door from a button at a desk?
Resolution:
If a door is being held open by the LCN SEM 7800/1900 magnet or any ME/SE Series Sentronic LCN closer, you can remotely release that door to close by ordering the following parts and wiri...:
What would cause a 4111 HEDA to not hold open?
Resolution:
The correct method (process) for setting the hold open is: The 4110 HEDA arms are handed, verify correct hand arm. (RH or LH stamped on shoe bracket) Loosen the hold open nut at shoe bracket. ...: