Resettable thermal fuse

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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...
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One of the following items may cause the EL1690 device to retract then release: Incorrect power supply - Verify you have the PS873-2/4TD or PS914-2RS/4RL power supply. Problems with wire gauge...
One of the following items may cause the EL1490 device to retract then release: Incorrect power supply - Verify you have the PS873-2/4TD or PS914-2RS/4RL power supply. Problems with wire gauge...
All doors are tested in accordance with ASTM C1363 and SDI 113:B18 Series (Steel Stiffeners)     U-Factor = 0.50     R-Value = 2.01B16 Series (Steel Sti...
Thermal Bow is a temporary condition which occurs in metal doors mainly due to the temperature differential from one side of the door to the other. This may occur in exterior doors when direct sun ...
Chexit devices shipped prior to 8-24-2015 with solenoid driven could cause the Von Duprin CX solenoid to pull and drop and sound the alarm with solid LED or no LED light after the rear...
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.