Repair and Servicing of JUMO SafetyM TB/TW Temperature Limiters

  • Manufacturer: JUMO
  • Series: SafetyM TB/TW (e.g., TB7011, TW7011 – Temperature Limiter / Temperature Monitor according to DIN EN 14597)
  • Device Type: DIN-rail Safety Temperature Limiter / Monitor

JUMO SafetyM TB/TW temperature limiters are safety-critical devices engineered to protect thermal processing equipment, boilers, and industrial heating systems from hazardous overheating.

Due to continuous operation in warm control cabinets, internal components—especially in the power supply section and sensor frontend—suffer from thermal degradation over time, leading to power loss, measurement drift, or false sensor fault alarms.

What we repair on JUMO SafetyM TB/TW units:

  • Internal Power Supply Stage: Component-level repair of switched-mode power supplies (replacement of capacitors, PWM controllers, and power stage components).

  • Sensor Input Circuits: Repair of analog frontends processing RTD (Pt100, Pt1000) and thermocouple signals, resolving calibration errors or persistent sensor fault states.

  • Output Safety Relays: Replacement of worn or pitted safety output relay contacts controlling the safety shutdown chain.

  • Display & Keypad Interface: Repair of degraded display panels and unresponsive front-panel configuration buttons.

Benefits of our repair service:

    • Retain Device Configuration: Repairing your existing unit preserves custom temperature setpoints, hysteresis levels, and input configurations.

    • Plug-and-Play Restoration: No cabinet re-wiring or panel modifications required—simply plug the repaired unit back into the DIN rail.

    • Proactive Component Replacement: Critical thermal-aging passive components are replaced along with the fault repair to ensure long-term stability.