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Question
Answer
What cylinder is used in the Falcon 24/25 exit alarm kit?
Resolution:
The Exit Alarm takes a 1 1/8" Mortise cylinder with a straight cam. See first page of Exit Alarm inst below. Exit Alarm inst:
Why should you use the LX switch with an ALK being used in Von Duprin surface vertical rod devices?
Resolution:
You should use the LX switch with the Von Duprin surface vertical rod exit device because the rods are exposed and are vulnerable to attack. IE, the top rod can be grasped and forced down to retrac...:
Will one PS902 power supply run two Von Duprin exit alarm ALK'S?
Resolution:
PS902:
Is there an Exit Alarm Retrofit Kit (EAK) for the 19 series?
Resolution:
These kits for the 19 Series were discontinued June 11th, 2012 when the updated alarm kit for the 24/25 series was released. Prior to discontinuation, it was o...:
Does Von Duprin offer a water proof ALK?
Resolution:
Exit alarm ALK devices are not recommended for exterior application. We do not offer water proof exit alarm ALK devices.:
Can the green terminal block be soldered back on if it has broken off the ALK board?
Resolution:
If the green terminal block has been broken off of the exit alarm ALK you must replace the exit alarm ALK PC board part number 101030-00.:
Will an ALK sound when the exterior trim is used to enter from the pull side?
Resolution:
The ALK exit alarm will sound when the exterior trim is used to enter from pull side without using access control when an LX latch bolt monitor switch is used instead of RX push bar monitor switch.:
If using the alarm kit-ALK with the 99 device what power supply is needed?
Resolution:
Exit alarm ALK operates with 9VDC battery and doesn't required a power supply.If you choose to hard wire the exit alarm ALK use the PS902 power supply.Exit alarm ALK requires 24VDC regulated power ...:
Does the current Von Duprin ALK have an EI?
Resolution:
Current exit alarm ALK released in November 2010 does ship standard with an EI (external inhibit) option. ALK shipped prior to this would only have EI if ordered as a Special option.:
Can you field install a RX switch on the 24/25 device?
Resolution:
The RX switch can be installed at the factory when device is ordered or in the field with part# 650359-00. Installation instructions here will show how the RX swi...:
What could cause the Von Duprin exit alarm ALK to turn off after one or two minutes?
Resolution:
If the spring on the Von Duprin exit alarm ALK board is not located correctly as shown on the instructions, then the vibration from the horn allows the cylinder to turn and shut the exit alarm ALK ...:
Will the PT790 work with the ALK?
Resolution:
The new exit alarm ALK uses the 24VDC regulated PS902 power supply.:
Is the external inhibit option standard on the " new " ALK from Von Duprin?
Resolution:
The current Von Duprin ALK comes standard with the External Inhibit feature.:
What power supply replaces the Von Duprin 9VDC PS9 power supply?
Resolution:
The PS9 power supply was discontinued. The new exit alarm ALK can either use a 9VDC battery or 24VDC regulated power supply. There is no direct replacement for Von Duprin PS9 power supply. Cur...:
What cylinder is needed with Von Duprin exit alarm ALK?
Resolution:
The ALK uses a 1 1/4" mortise cylinder with straight cam. (NO DOGGING):
ALARM KIT
Resolution:
ALK, Battery Alarm Kit, ALK Alarm Kit:
How many Von Duprin ALK's can be powered off a PS900 series power supply?
Resolution:
The Von Duprin exit alarm ALK draws about .25 amp. PS902 power supply powers up to 8 exit alarm ALK. PS904/914 powers up to 16 exit alarm ALK. PS906 powers up to 24 exit alarm ALK. :
What is different about the updated Falcon Exit Alarm (EA) option ?
Resolution:
The Falcon Exit Alarm option was updated in June 2012 to include the following benefits. Louder Alarm 95dbs vs 87dbs Easier battery changes 24Vdc hardwire(HW) option included w...:
Is the ALK board available in 12VDC?
Resolution:
The Von Duprin exit alarm ALK only operates with 24VDC regulated power supply and is not available in 12VDC.:
Can the Von Duprin ALK exit alarm be ordered with hex dogging option on?
Resolution:
The standard exit alarm ALK devices are not available with dogging option. The device can be ordered through Engineering Special with dogging option on non fire exit devices. This special is o...:
Can the Von Duprin Chexit device be changed to ALK exit alarm?
Resolution:
The Chexit device has a different base plate and center case than the ALK. The Chexit device would need to be replaced with an ALK device.:
Were the ALK PCB boards blue at one time?
Resolution:
No, the exit alarm ALK printed circuit board has been always green.:
Why would the ALK chirp?
Resolution:
A low battery could cause the exit alarm ALK to chirp. Replace the battery and if it is still chirping, then replace the circuit board part number 101030-00.:
Can I use CD and ALK on a 98/99 series Von Duprin?
Resolution:
Standard 98/99 exit alarm ALK devices are available with cylinder dogging option as of October, 2011. The device can be ordered standard with cylinder dogging and exit alarm ALK opti...:
Does a Von Duprin ALK kit come with an RX switch?
Resolution:
ALK kit comes with standard RX switch. It can be ordered without the RX switch or with LX switch as an option.:
Is a switch required to operate the Von Duprin ALK unit?
Resolution:
Yes. The exit alarm ALK is shipped standard with a RX, request to exit switch, but can work with the optional LX, latch bolt monitor switch. If there is no switch in the device it will never alarm.:
Does the new ALK have LED?
Resolution:
The new Von Duprin exit alarm ALK shipped after November 2010 has an LED indicator.:
The Von Duprin 98 or 99 ALK kit will not sound the horn
Resolution:
Followings are the reason for 98/99 exit alarm ALK not sound when push bar is activated. Make sure key switch on exit alarm ALK is turned on, wait for 20 seconds before you activating the pushba...:
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...:
Does the ALK have 24vdc terminals on the circuit board?
Resolution:
The Von Duprin exit alarm ALK shipped after November 2010 are new style boards and can be identified by the 3 terminal blocks and LED. Only these ALK will work with 24vdc power supply.:
What is the part number for the EAK PCB only for Monarch Falcon devices?
Resolution:
This circuit board will NOT work on the updated 24/25 Alarm Kits that released June 11th, 2012.:
Can the Von Duprin exit alarm ALK and electric latch retraction QEL or EL device be in the same device?
Resolution:
No, Von Duprin exit alarm ALK and electric latch retraction QEL or EL are installed in the same location and can't be ordered together with the same device.:
What is the part number for the ALK sign?
Resolution:
The sign for exit alarm, ALK, is SIGN-1.:
What is the current draw of a Von Duprin exit alarm kit ALK?
Resolution:
The current draw of a Von Duprin exit alarm ALK is .25 amp when alarm is activated.:
Alk not power up - using 9V battery
Resolution:
There are three main failures with an ALK. Problems are usually caused by a bad power source(battery), bad RX/LX Switch or a bad circuit board. Try installing a new battery and wai...:
Does the Von Duprin ALK require the RX switch to operate?
Resolution:
The RX switch is required to activate the ALK. The RX switch monitors the pushbar and will signal the ALK to go into alarm when the pushbar is depressed. The RX switch also allows free in...: