Tube chiller systems require regular cleaning to maintain optimal cooling efficiency. In industrial environments, wet conditions and tight spaces make traditional electrical control systems unsafe or impractical. To meet these challenges, OEMs are integrating the air switch for motor control for safe, compact, and responsive direction control within tube chiller maintenance equipment.
Shop Presair Tinytrol Air Switches.
Pneumatic Motor Direction Control for Tube Cleaning
Presair’s Tinytrol air switch (TVP211B-2PR/1.5PF) offers pneumatic actuation in a DPDT configuration to reverse motor polarity. This makes it ideal as an air switch for motor control when handling the rotating shaft or brush that removes scale and debris inside chiller tubes. Operators actuate the switch using a foot pedal or push-button air actuator, enabling hands-free, shockproof direction switching in moisture-prone environments.
Key Features and System Benefits
- Safe electrical isolation: Air actuation eliminates live voltage at the user interface.
- Directional control: Reverses motor rotation on demand via pneumatic signal.
- Compact form factor: Fits easily within mobile and confined equipment layouts.
- Moisture resistance: Performs reliably in wet or washdown environments.
- Durable design: Withstands frequent cycling under industrial conditions.
System Integration: Installation and Operation
Installation:
- Mount the Tinytrol air switch inside the system’s control housing.
- Connect tubing from a pneumatic actuator (foot pedal or button) to the switch.
- Wire the DPDT contacts into the motor’s polarity circuit.
- Seal enclosures to prevent water ingress.
Operation:
- The operator presses the foot pedal or actuator.
- Air pressure triggers the Tinytrol switch.
- The switch toggles between forward and reverse motor operation.
- No electrical contact occurs at the activation point, reducing shock risk.
Applications Beyond Chillers
While originally developed for chiller systems, the air switch for motor control also supports safe operation of:
- Industrial vacuum systems
- Washdown cleaning stations
- Pump direction control
- Motor control panels requiring isolated switching
Why OEMs Choose Presair’s Tinytrol Series
Presair’s pneumatic switching solutions are engineered for safety, longevity, and integration ease. Manufactured in the USA, the Tinytrol air switch provides:
- Reliable, high-cycle operation
- Configurable switching parameters
- Fast lead times and design support
- UL-listed safety compliance
By using an air switch for motor control, OEMs can simplify electrical architecture while improving operator safety in moisture-heavy and electrically sensitive applications.
To request OEM pricing, contact us.
