This regulator was replaced by the 30731808-003, which solved problems relating to overheating of the 15 Amp fuse, among other issues. If you place an order for the 30731808-001 with WPC, we will substitute the newer 30731808-003, unless you state in your order that you do not want the newer regulator.

The regulator card receives +24V from the backplane, and provides +5V and ?12V output to its chasis. If a regulated voltage faults, the card communicates the fault to other boards in the file. Test sockets are provided on the front of the card for fault detection and calibration. Early versions of this card contain 3 removeable fuses, new version hold 2.

WPC installs new electrolytic capacitors of the original specification on this regulator, as shown.

Board contains 2 LEDs,

DS2 – +24Vdc present on backplane

DS1 – all voltage present

Adjustments/Calibration

Honeywell has reported that Rev 10 and below do require some preventive maintance. Fuse holder F2, zener CR20 and the circuit board around that area are prone to corrosion. If zener is present, clip and remove. The fuse at F2 must be cleaned and tightened. Clean with isopropyl alcohol 91% or better.