PSC Motor
A PSC Motor (Permanent Split Capacitor Motor) is a common type of motor found in air conditioning and heating systems. Think of it as the "heart" that powers fans and blowers in AC units. It's called "permanent split" because it uses a always-connected helper part (capacitor) to keep running smoothly. When looking at resumes, this term shows that a technician has experience working with these essential AC system components. It's similar to other motor types like ECM (Electronically Commutated Motor) or shaded-pole motors, but PSC motors are very common in residential and light commercial AC systems.
Examples in Resumes
Diagnosed and replaced faulty PSC Motor units in residential AC systems
Performed maintenance and troubleshooting on PSC Motors across various HVAC brands
Led training sessions on PSC Motor replacement and repair procedures
Typical job title: "HVAC Technicians"
Also try searching for:
Where to Find HVAC Technicians
Professional Organizations
Online Forums
Job Resources
Example Interview Questions
Senior Level Questions
Q: How would you diagnose a failed PSC motor in a complex HVAC system?
Expected Answer: A senior technician should explain the step-by-step troubleshooting process, including checking capacitor function, measuring voltage and amperage, and identifying system-wide issues that might have caused the motor failure.
Q: Compare PSC motors with other motor types in terms of efficiency and applications.
Expected Answer: Should demonstrate knowledge of different motor types, their efficiency ratings, cost considerations, and best applications for each type in various HVAC systems.
Mid Level Questions
Q: What are the common signs of a failing PSC motor?
Expected Answer: Should list signs like unusual noises, motor running hot, slow starting, or requiring manual push to start, and explain how these symptoms help diagnose specific problems.
Q: How do you properly size a replacement PSC motor?
Expected Answer: Should explain checking specifications like horsepower, voltage, RPM, rotation direction, and physical mounting requirements to ensure correct replacement.
Junior Level Questions
Q: What safety procedures do you follow when working with PSC motors?
Expected Answer: Should mention basic electrical safety, proper power disconnection, checking capacitor discharge, and using appropriate tools and personal protective equipment.
Q: What is the basic function of a PSC motor in an AC system?
Expected Answer: Should explain that it powers the fans that move air through the system, and understand the basic components like the capacitor and windings.
Experience Level Indicators
Junior (0-2 years)
- Basic motor testing and replacement
- Understanding of electrical safety
- Simple troubleshooting
- Basic maintenance procedures
Mid (2-5 years)
- Complex diagnostic procedures
- Multiple system type experience
- Proper sizing and selection
- Emergency repair expertise
Senior (5+ years)
- System-wide problem solving
- Training and supervision
- Advanced efficiency analysis
- Quality control management
Red Flags to Watch For
- No understanding of electrical safety procedures
- Inability to use basic testing equipment
- No experience with different HVAC brands
- Lack of proper certification or training
