Emergency Repair Services — Multi-Site Operations

On Line Controls, Inc. provides repair support for MicroAir ultra-low air pressure regulators and motorized potentiometers built by OLC. Services may include bench testing, repair, rebuilding, damping fluid replacement for MicroAir units, and troubleshooting guidance. The team also evaluates some older OEM ETI motorized potentiometers, depending on age, condition, and available parts.

MicroAir air pressure units less than 10 years old can usually be serviced in one day after they are received and tested. Older units may be sent in for evaluation, but repairability depends on condition and serial number. Units with serial numbers lower than 7000 are not repairable because the internal body has worn out after long-term use.

Yes. On Line Controls, Inc. supports manufacturers with equipment across multiple production locations by providing repair, troubleshooting, and product support for MicroAir regulators and motorized potentiometers. This is especially useful for medical tubing, catheter, automotive tubing, plastic straw, and other extrusion operations that need consistent pressure control performance across sites.

The listed availability for On Line Controls, Inc. is Monday through Friday, 9:00 am to 5:00 pm EST. For urgent production issues, customers should contact the team during business hours with the model, serial number, symptoms, and production impact so the service department can provide the most efficient repair or troubleshooting guidance.

For MicroAir repairs, the cost is provided after the unit is received and tested. If a unit is out of warranty, a purchase order may be required before repairs proceed. A cleanup charge may be added if a unit is shipped with oil. Motorized potentiometer repair timing and feasibility depend on parts availability.

All MicroAir units are covered by a three-year manufacturer’s warranty on parts and labor. Warranty status can affect repair requirements, including whether a purchase order is needed. Customers should provide the model and serial number when requesting service so OLC can evaluate warranty coverage and the most appropriate repair path.

On Line Controls, Inc. repairs or rebuilds motorized potentiometers built by OLC and will try to repair older OEM ETI motorized potentiometers, including MC, MAC, and ME series units from the 1980s and 1990s. Repair feasibility and delivery depend on the availability of replacement parts and the condition of the unit.

Before sending equipment, provide the product type, model, serial number, symptoms, application details, and whether the issue affects one site or multiple sites. For MicroAir units, avoid shipping equipment with oil whenever possible. Clear information helps the service team test efficiently, confirm repairability, and provide accurate repair guidance.