- Manufacturer: Elster Kromschröder / Honeywell
- Series / Model: PFU 760 (e.g., PFU 760L, PFU 760N, PFU 760W variants)
- Device Type: Industrial Burner Control Unit & Flame Safeguard System
Kromschröder PFU 760 burner control units are safety-critical devices designed for controlling, monitoring, and igniting industrial gas burners in continuous or intermittent operation across heat-treatment furnaces, kilns, and thermal processing plants.
Operating in high-ambient temperature control environments causes natural thermal degradation of internal power supplies, relay contact erosion, and loss of sensitivity in flame sensing stages. Faults usually cause lockouts (safety shut-down), failure to detect ionization current, unresponsiveness during ignition, or communication bus errors.
What we repair on Kromschröder PFU 760 control units:
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Flame Detection Frontend (Ionization / UV): Precision component-level repair of micro-ampere ionization sensing circuits, UV phototube amplifier stages, and noise rejection filters.
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Safety Relay Outputs: Replacement of pitted, worn, or welded internal output relays controlling gas safety shut-off valves, ignition transformers, and air dampers.
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Internal Power Supply Stage: Complete recapping of degraded capacitors, replacement of switching regulators, and overvoltage protection components.
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Fail-Safe Logic Board: Servicing of dual-processor fail-safe control logic, watchdogs, timing generators, and remote reset circuitry.
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Fieldbus Interfaces: Repair of optocouplers and communication transceivers (Profibus / Modbus) used for remote diagnostic monitoring.
Benefits of our repair service:
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No Cabinet or Wiring Redesign: Direct repair of your existing PFU 760 eliminates the need to retrofit newer burner controls that require panel re-wiring and safety recertification.
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Retain Safety Parameters & Timings: Preserves exact factory or user-configured safety times (ignition delay, safety shut-off interval) intact.
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Proactive Safety Overhaul: Critical power components and relays are replaced along with fault repairs to ensure long-term operational safety.
