Earlier Product Data

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Model 254 Current Control / Temperature Contol

  • Description of Products
    The model 254 controls were designed and built for the air pollution control industry in the early 1970's. The 254-I monitored and controlled baghouse fan motor current while the 254-T monitored and controlled baghouse temperature by modulating a tempering air inlet damper.
  • Availability
    • No longer available (discontinued in 1990)
  • Repair
    • Can be repaired
      • This product can be repaired at the factory. We still have spare plug-in cards and some of the other components.
      • Parts you can order for your own repair efforts:
        • Plug-in cards
        • horizontal meters (while supplies last)
    • Manuals
  • Upgrading to newer product
    • Nothing available
  • Recommendation for new applications
    • Nothing available
 

Front View of 254-I Current Control
 
Left side view of 254 Control
 
Right side view of 254 Control
Note: early versions, shown above, used half-wave power supply circuit which tended to overheat. Later models used full-wave bridge power supply with center-tapped transformer. Two additional diodes were added to the back of the mother card.
Note: double-sided printed wiring cards used eyelets as vias to connect track from front to back side of mother card. If you experience erratic operation re-solder the vias before sending unit back for repair.

Initial shipments of the 254 controls went to Wheelabrator Air Pollution Controls in Pittsburgh, PA. Controls were manufactured by Electronics Inc at these locations:
  • 4727 Fellow Street, South Bend, IN (1974-1978)
  • 502 E. LaSalle Ave, South Bend, IN (1978-1983)
  • 1520 N. Main Street, Mishawaka, IN (1983-1999)
  • 1428 W. 6th Street, Mishawaka, IN (1999-2002) (repair only)
  • 56790 Magnetic Drive, Mishawaka, IN (repair only)
For information to send unit in for repair click here:

This page last revised on 20, January, 2007