Introduction
The Spectra S2 Plus Electric Breast Milk Pump is designed to provide comfortable and efficient breast milk expression. It features adjustable suction levels that mimic natural breastfeeding, offering both expression and massage modes. This pump can be used for single or double pumping and is made with BPA/DEHP-free materials to ensure the safety of your baby. Spectra is committed to supporting mothers through their breastfeeding journey with quality products and customer care.
Product Overview
What's in the Box
The Spectra S2 Plus pump typically includes the following components:
- S2 Plus Pump Unit
- Breast Flanges (various sizes may be included, e.g., 24mm, 28mm)
- Tubing
- Duckbill Valves
- Backflow Protectors
- Wide Neck Storage Bottles
- 12V Charger

Figure 1: Included components of the Spectra S2 Plus Electric Breast Milk Pump.
Key Features
- Massage Mode: Simulates the natural suckling of a baby to initiate milk flow.
- Adjustable Suction Levels: Offers customizable vacuum settings up to hospital strength (270mmHg).
- Closed System: Designed to prevent milk and condensation from flowing back into the tubing or pump motor, ensuring hygiene.
- Display with Auto-Timer: Provides easy-to-read settings and tracks pumping duration.
- Ultra Quiet Operation: Engineered for discreet use.
- Built-in Night Light: Allows for convenient pumping in low-light conditions.

Figure 2: Visual representation of the Spectra S2 Plus's main features.
Setup
Before first use, it is crucial to clean and sanitize all parts that come into contact with breast milk. The Spectra S2 Plus is a single-user item. Using it with multiple users without proper sterilization may pose health risks and voids the warranty.
Assembly Instructions
- Clean and Sanitize: Disassemble all parts that will come into contact with breast milk (flanges, valves, bottles, backflow protectors). Wash them with warm soapy water and rinse thoroughly. Sanitize by boiling in water for 5 minutes or using a steam sterilizer. Ensure all parts are completely dry before assembly.
- Assemble Backflow Protector: Connect the two halves of the backflow protector.
- Attach Duckbill Valve: Firmly push the duckbill valve onto the bottom of the breast flange.
- Connect Bottle: Screw the collection bottle onto the bottom of the breast flange.
- Attach Tubing: Connect one end of the tubing to the backflow protector and the other end to the pump unit's air port.
- Power Connection: Plug the 12V charger into the pump unit and then into a power outlet.

Figure 3: The Spectra S2 Plus pump unit, ready for use.
Flange Sizing
Proper flange sizing is essential for comfort and effective milk expression. Measure your nipple diameter after a few minutes of pumping and add 2-3mm to find your ideal flange size. A flange that is too large or too small can cause discomfort and reduce milk output.

Figure 4: Guide to proper breast flange sizing for optimal comfort and efficiency.
Operating Instructions
The Spectra S2 Plus offers customizable settings to match your individual needs and comfort.
Basic Operation
- Power On: Press the power button to turn on the pump. The display will illuminate.
- Initiate Let-down (Massage Mode): The pump starts in massage mode, characterized by a fast, shallow cycle. This mode helps stimulate milk ejection reflex. You can adjust the cycle speed and vacuum level in this mode using the '+' and '-' buttons.
- Switch to Expression Mode: Once milk begins to flow, press the massage/expression mode button (often indicated by a wavy line icon) to switch to expression mode. This mode uses slower, deeper cycles to efficiently express milk.
- Adjust Settings: In expression mode, adjust the vacuum level using the '+' and '-' buttons to find a comfortable yet effective suction. Adjust the cycle speed (how many times the pump sucks per minute) using the cycle button. Experiment to find settings that mimic your baby's natural suckling pattern and maximize milk output without discomfort.
- Single or Double Pumping: The pump supports both single and double pumping. Connect one or two collection kits as needed.
- Night Light: Use the night light button to illuminate the display and controls for nighttime pumping sessions.
- Auto-Timer: The built-in timer on the display helps you keep track of your pumping duration.
- Power Off: Press the power button again to turn off the pump when finished. The pump remembers your last settings for convenience.

Figure 5: The Spectra S2 Plus with its night light feature, ideal for discreet pumping.
Maintenance and Cleaning
Regular cleaning and maintenance are vital for the hygiene and longevity of your breast pump.
Daily Cleaning
- After each use, disassemble all parts that come into contact with breast milk (breast flanges, duckbill valves, backflow protectors, collection bottles).
- Wash these parts immediately in warm, soapy water. Use a dedicated brush for breast pump parts.
- Rinse thoroughly under clean running water.
- Air dry on a clean paper towel or drying rack. Do not use a cloth towel as it may transfer germs.
- The pump unit and tubing should not be washed or sterilized, as they do not come into contact with milk due to the closed system design. Wipe the pump unit with a clean, damp cloth if needed.
- Note: The pump parts are not dishwasher safe.
Sanitization
Sanitize all milk-contacting parts at least once a day, or as recommended by your healthcare provider. This can be done by boiling the parts in water for 5 minutes or using a steam sterilizer.
Part Replacement
Over time, pump parts can wear out, affecting suction and efficiency. It is recommended to inspect and replace parts such as duckbill valves and backflow protectors every 2-3 months, or sooner if you notice a decrease in suction or visible damage.
Troubleshooting
If you encounter issues with your Spectra S2 Plus pump, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No suction or weak suction |
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| Pain or discomfort during pumping |
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| Low milk output |
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Specifications
| Feature | Detail |
|---|---|
| Model Number | Spectra S2Plus |
| Product Dimensions | 7.9 x 7.9 x 6.7 inches |
| Item Weight | 3.3 pounds |
| Material Type | BPA/DEHP free |
| Power Source | Battery Powered (Note: The S2 Plus is primarily AC powered, with an internal battery for settings retention, not for portable operation.) |
| Pump Type | Electric |
| Operation Mode | Electric |
| Special Features | Painless, Portable (referring to its compact size), Night Light, Auto-Timer, Massage Mode, Adjustable Suction, Closed System |
| Dishwasher Safe | No |
| Minimum Weight Recommendation | 5 Pounds |
| Maximum Weight Recommendation | 5 Pounds |
Warranty and Support
Warranty Information
The product warranty is handled directly through the Spectra company. Please refer to the official Spectra website or contact their customer service for detailed warranty terms and conditions.
Safety Warning: This product's kit is a single-user item unless properly sterilized between users. Use by more than one user without adequate sterilization may pose a health risk and voids the warranty.
Customer Support
For any questions, concerns, or assistance with your Spectra S2 Plus breast pump, please contact Spectra customer service. They are known for their excellent support and can provide guidance on product use, troubleshooting, and parts replacement.
Visit the official Spectra website for contact information and additional resources: www.spectra-baby.com





