Copeland 914-0036-07 Start Capacitor

The Copeland 914-0036-07 Start Capacitor is a high-duty, round electrical component engineered for single-phase compressor motor starting applications. Rated at 130-156 Microfarad (MFD) and 330Vac, this capacitor provides the necessary phase shift to generate high starting torque, making it essential for systems using non-bleed TXVs or operating under high head pressure. As a direct replacement for 66083, it ensures seamless compatibility with legacy Emerson and Copeland cooling systems. This round start capacitor features a rugged electrolytic design often including a pre-installed bleed resistor to protect potential relay contacts from arcing. For professional contractors, utilizing an OEM Copeland capacitor is the standard for maintaining UL certification and ensuring the compressor’s start windings are not subjected to excessive inrush current. This 50/60 Hz component is built to withstand the thermal stress of frequent cycling, providing reliable torque for heavy-duty HVACR residential and commercial units.

• Precise Capacitance: The 130-156 MFD range delivers the specific torque required to overcome mechanical resistance during the first quarter-second of compressor startup.
• Universal Compatibility: Serves as the primary 66083 replacement capacitor, eliminating the need for field modifications on older Lennox and Copeland units.
• Voltage Stability: Rated for 330Vac, offering a robust safety margin over standard 250V variants for better heat dissipation and long-term reliability.
• Integrated Safety: Designed to facilitate efficient electrical discharge, reducing wear on the system's start relay and protecting the motor windings from overheating.

What are the signs of a failing Copeland start capacitor?
Technicians should look for a "bulged" top, oil leakage, or a humming sound from the compressor without it turning over. Testing with a multimeter across the terminals should show a reading within the 130-156 Microfarad range; anything lower indicates dielectric breakdown.

Can I use a start capacitor with a higher voltage rating?
Yes. While you must match the capacitance (µF) closely, using a capacitor rated for 330Vac to replace a 250Vac or 320Vac unit provides increased durability and is standard practice in high-performance HVACR service.

Does this capacitor require a bleed resistor?
This 914-0036-07 model typically comes with a resistor to dissipate stored energy. This prevents the high-voltage discharge from welding the contacts of your potential relay, extending the life of the entire starting circuit.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.