Technical Documentation

Terminal Configuration

Each Sigma Cap Pro pod features three quick-connect terminals arranged 120 degrees apart:

• Term 1 (HERM) - Hermetic/compressor connection
• Term 2 (C/COM) - Common connection
• Pass-through - For stacking additional pods

Parallel vs Series Configuration

Configuration	Rotation	Use Case
Parallel	None (0°)	Adding MFD values (e.g., 25 + 10 = 35 MFD)
Series/Dual	120°	Separate hermetic and fan circuits

Installation Best Practices

• Ensure all power is disconnected before installation
• Verify existing capacitor values before selecting pods
• Mount the assembled capacitor securely using appropriate brackets
• Use proper gauge wire for all connections
• Apply the end cap to cover unused terminals

When to Use Single Capacitor Mode

Single capacitor configurations are used when you need to replace a run capacitor for a single motor (no fan motor or separate fan capacitor).

Common Single Capacitor Applications:

• Compressor-only replacements
• Fan motor replacements (when separate from compressor)
• Auxiliary equipment capacitors

Example Configurations:

Target MFD	Main Pod	Additional Pods
25	25/5	None
35	25/5	10
45	25/5	20
55	25/5	30

For single capacitor mode, set the Fan value to 0 in the calculator.

Compressor-First Stacking Rule

When building a dual capacitor, always follow this stacking order from bottom to top:

1. Main Pod - Base of the assembly
2. Additional HERM Pods - To reach target hermetic value
3. Fan Pods (rotated 120°) - Separated circuit for fan motor
4. End Cap - Cover unused terminals

120-Degree Rotation

For dual capacitor configurations, the fan motor pods must be rotated 120 degrees from the hermetic pods. This separates the circuits using the pass-through terminal design.

Hermetic vs Fan Alignment

Pod Stack	Alignment	Purpose
HERM to HERM	Aligned (0°)	Parallel connection for total MFD
HERM to FAN	Rotated (120°)	Separate circuits for dual capacitor
FAN to FAN	Aligned (0°)	Parallel for larger fan values

Pod Specifications

Pod Type	MFD Values	Body Height	Diameter	Voltage
Main Pod	25/5, 25/7.5	2.63"	2.5"	370/440 VAC
Small Pod	2.5, 5, 10	1.938"	2.5"	370/440 VAC
Big Pod	15, 20, 30	2.1"	2.5"	370/440 VAC

Electrical Ratings

• Voltage: 370/440 VAC (dual rated)
• Frequency: 50/60 Hz
• Temperature Range: -40°C to +70°C (-40°F to +158°F)
• Capacitance Tolerance: ±5%

Certifications

• UL Listed
• RoHS Compliant
• US Patent No. 10,199,755 B2

Before Installation

• Disconnect Power - Always disconnect all electrical power before working on HVAC equipment
• Discharge Capacitor - Use appropriate tools to safely discharge any existing capacitors
• Verify Values - Confirm the required MFD values match your calculation
• Inspect Components - Check pods for any damage before assembly

During Installation

• One-Time Assembly - Do not attempt to separate pods after connection
• Secure Mounting - Ensure the assembled capacitor is properly secured
• Proper Wiring - Use correct wire gauge and secure connections
• End Cap - Apply the protective end cap to cover unused terminals

After Installation

• Double-Check - Verify all connections before restoring power
• Test Operation - Monitor initial operation for proper function
• Document - Record the configuration used for future reference

One-Year Limited Warranty

Sigma Cap Pro warrants its products to be free from defects in materials and workmanship for a period of one (1) year from the date of original purchase.

What Is Covered

• Defects in materials
• Defects in workmanship
• Failure under normal use conditions

What Is Not Covered

• Damage from misuse, abuse, or accident
• Damage from improper installation
• Damage from disassembly or modification
• Normal wear and tear
• Consequential or incidental damages

Warranty Claims

To make a warranty claim, contact your authorized distributor with:

• Proof of purchase
• Description of the issue
• Photos of the product (if applicable)

Limitation of Liability

Sigma Cap Pro's liability under this warranty is limited to repair or replacement of the defective product at our discretion. In no event shall Sigma Cap Pro be liable for any indirect, incidental, special, consequential, or punitive damages arising out of or related to the use of this product.

This warranty gives you specific legal rights, and you may also have other rights which vary from state to state. Some states do not allow limitations on implied warranties or exclusion of incidental or consequential damages, so the above limitations may not apply to you.