Expert Industrial Controls Repair Services

An industrial repair service evaluates, troubleshoots, and restores equipment used in manufacturing operations. For On Line Controls, Inc., that includes testing MicroAir ultra-low air pressure regulators and motorized potentiometers, identifying worn or failed components, completing eligible repairs or rebuilds, and verifying operation before return. The goal is to reduce downtime and extend the useful life of specialized control equipment.

Industrial controls regulate machine functions such as pressure, speed, position, or process response. In extrusion applications, MicroAir regulators control ultra-low internal air pressure to help maintain tubing outside diameter, while motorized potentiometers provide adjustable electrical control. These components help production lines respond consistently to process changes, including cuts, spooling, bump tubing, and taper tubing.

Most MicroAir air pressure units less than 10 years old can be serviced and are usually repairable, often in one day after receipt and testing. Older units can be sent in for evaluation. However, MicroAir units with serial numbers lower than 7000 are not repairable because the internal body has typically worn out after about 20 years of use.

The repair cost is provided after On Line Controls, Inc. receives and tests the unit. If the unit is out of warranty, a purchase order may be required before repair work begins. A cleanup charge may also be added if the unit is shipped with oil, so customers should follow shipping guidance carefully before sending equipment in.

MicroAir units are covered by a three-year manufacturer’s warranty on parts and labor. Warranty eligibility depends on the unit, condition, and service circumstances. For out-of-warranty repairs, OLC tests the equipment first and then provides the repair cost. Technical support is also available to help customers troubleshoot installation, operation, and maintenance questions.

On Line Controls, Inc. repairs and rebuilds motorized potentiometers built by OLC and also tries to repair older OEM ETI motorized potentiometers, including MC, MAC, and ME series models from the 1980s and 1990s. Successful repair depends on unit condition and parts availability, so older potentiometers should be evaluated before expectations are finalized.

These repair services are especially relevant for plastic tubing extrusion manufacturers, including medical tubing, catheter, plastic straw, and automotive tubing producers. Extruder OEM manufacturers may also need support for control components used in production systems. OLC’s repair expertise focuses on precision pressure control and motorized adjustment equipment used in demanding extrusion environments.

Customers can contact On Line Controls, Inc. by phone or email for troubleshooting assistance before shipping a unit for repair. Support covers MicroAir installation, maintenance, operation, and model-specific questions for MicroAir I, MicroAir II, MicroAir IV, and multi-channel units. This helps determine whether a unit needs repair or can be corrected through setup or maintenance.