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power supplies fuses
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RELATED FAQS
Question
Answer
AC is fuse blowing on a PS914 when AC power is applied.
Resolution:
If AC fuse blowing on a PS914 power supply then the mother board is defective. You need to replace the power supply with a new one.:
Is there a wiring diagram for EL and Von Duprin PS914-2RS power supply?
Resolution:
Reference The 914 Installation instructions.:
What would cause my Chexit to go into a weak alarm 10 seconds after arming it?
Resolution:
The following could cause the Chexit device shipped prior to 8-24-2015 with solenoid driven to go into weak alarm with solid LED light: Wrong power supply- Chexit device requires a...:
What wire gauge and run is recommended for Von Duprin electric latch retraction EL device?
Resolution:
:
Solenoid on Chexit pulls back and immediately lets go and alarm goes off with red solid light.
Resolution:
The following could cause the Chexit solenoid ( devices shipped prior to 8-24-2015) pulls in then drop out with no alarm. Mechanical adjustment such as vertical rods. Disconnect t...:
Are the batteries for the PS 914 BBK the same as the ones from the 873 BB?
Resolution:
The battery for the PS873 and PS914 are the same, 7AH sealed Lead Acid battery.:
Will the MPB-842 or MPB-840 power EL or QEL devices?
Resolution:
The old MPB842 power supply will power up to two EL electric panic bars but will not power the QEL devices. A defective potted module inside the electric panic bar or defective power supply coul...:
Why is my Von Duprin CX going into a weak alarm after the rearm delay?
Resolution:
Chexit devices shipped prior to 8-24-2015 with solenoid - the solenoid pulls and drops, the alarm sounds, there is a solid LED or no LED light after the rearm t...:
What size is the fuse in the PS873?
Resolution:
The DC output fuse in the PS873 power supply is 4 AMP slow blow.:
What would cause a 4600 (4630/4640) to keep blowing fuses as soon as the 120VAC cable is plugged into control box?
Resolution:
The main AC fuse would blow if there is a direct short across the AC line. This could be caused by a:1. Defective I/O PC Board (-3180) To check - unplug the control box AC power cable (2 wire)...:
What power supply replaces the Von Duprin MPB840 or MPB842?
Resolution:
MPB840 = PS914power supply, MPB842 = PS914-2RS power supply.:
Why does the fuse blow in the power supply when arming the Von Duprin Chexit device?
Resolution:
The following could cause the fuse to blow in the power supply with devices shipped prior to 8-24-2015 with solenoid driven when Chexit device is arming. Wrong power supply Confirm PS873 or...:
What power supply is need for Falcon EL devices?
Resolution:
The Von Duprin PS914 power supply with either the 900-2RS or the 900-4RL option board is required.:
What could cause the fuse to blow in a PS873 power supply?
Resolution:
Following could cause the fuse to blow in Von Duprin PS873 power supply. PS873 power supply provides 2AMP at 24VDC or 4AMP at 12VDC. If this limit is exceeded the fuse will blow in the power sup...:
What power supply is used with RX or LX switches?
Resolution:
The RX switch is request exit and the LX switch is latch bolt monitor switch. They do not require a power supply directly. The electrified hardware that the RX or LX switch...:
Why would a Falcon 8200 Series operator be blowing the fuse?
Resolution:
If the Main AC fuse is blowing, the control box is defective and needs to be replaced. The "Main Fuse" is a (5x20MM) 1 Amp Slow Blow fuse. If the 12VAC fuse is blowing, verify they are not trying...:
Can you operate a Doromatic EL 1490 with an LCN power supply?
Resolution:
This is not possible. Due to the device's 16 Amp in-rush it would require it's own PS914-2RS which will power 1 or 2 devices.: