Introduction
This manual provides essential instructions for the safe installation, operation, and maintenance of your PROFLO PF92952 1/3 HP Sump Pump System with Back Up. Please read this manual thoroughly before installation and retain it for future reference.
Safety Information
WARNING: Risk of electric shock. Always disconnect power before servicing.
Observe all local electrical and plumbing codes. This system operates on 12 Volts DC for the backup pump and requires a properly grounded 120V AC outlet for the primary pump and charger. Do not operate the pump with a damaged cord or plug. Do not handle the pump with wet hands or while standing in water.
Always wear safety glasses when working with the pump system.
Product Overview
The PROFLO PF92952 is a comprehensive sump pump system designed to protect your property from flooding. It includes a primary cast iron sump pump and a battery-powered backup pump for continuous operation during power outages.
Components Included:
- Primary Cast Iron Sump Pump (PF92352)
- Backup Pump (PF92910)
- Alarm / Control Panel with Fuse
- Thermoplastic Battery Box
- Pre-assembled piping and float switches

Figure 1: PROFLO PF92952 Sump Pump System components. This image displays the primary sump pump, backup pump, battery box, and associated piping and float switches, all pre-assembled.
Setup and Installation
The PROFLO PF92952 system comes pre-assembled for easier installation. However, proper connection to your existing sump pit and electrical system is crucial.
Required Tools and Materials (Not Included):
- Battery (Deep cycle marine battery recommended, 12V)
- PVC pipe and fittings for discharge line
- Check valve (if not already present in discharge line)
- Sealant or thread tape
- Basic plumbing tools (pipe wrench, hacksaw, etc.)
Installation Steps:
- Prepare the Sump Pit: Ensure the sump pit is clean and free of debris. The pit should be large enough to accommodate both pumps and allow for proper float switch operation.
- Position the System: Carefully lower the pre-assembled pump system into the sump pit. Ensure both the primary and backup pumps are stable and level. The float switches must have unrestricted movement.
- Connect Discharge Line: Connect the system's discharge outlet to your existing discharge piping. Use appropriate PVC fittings and sealant to ensure a watertight connection. Install a check valve above the pump discharge to prevent water from flowing back into the pit.
- Install Battery: Place a fully charged 12V deep cycle marine battery (not included) into the thermoplastic battery box. Connect the battery cables from the control panel to the battery terminals, ensuring correct polarity (red to positive, black to negative).
- Connect Electrical Power: Plug the primary pump's power cord into a grounded 120V AC outlet. Plug the control panel's power cord into a separate grounded 120V AC outlet. Ensure both outlets are protected by a Ground Fault Circuit Interrupter (GFCI).
- Test Operation: Fill the sump pit with water to activate the primary pump. Observe its operation and ensure water is discharged correctly. Continue filling until the backup pump's float switch activates, testing its function. Verify the alarm sounds when the backup pump activates.
Operation
The PROFLO PF92952 system operates automatically. The primary pump handles normal water accumulation, while the backup pump activates during power outages or if the primary pump fails.
Primary Pump Operation:
When water in the sump pit rises to a predetermined level, the primary pump's float switch will activate the pump. The pump will then discharge water until the float switch drops to its off position.
Backup Pump Operation:
If the power supply to the primary pump is interrupted, or if the water level continues to rise past the primary pump's activation point (indicating primary pump failure or overwhelming water inflow), the backup pump's float switch will activate. The backup pump, powered by the 12V battery, will begin pumping water. The control panel will also sound an alarm to alert you to the backup system's activation.
Alarm / Control Panel:
The control panel monitors the system status and battery charge. It will emit an audible alarm under the following conditions:
- Backup pump activation
- Low battery charge
- Power outage (if the primary pump's power is lost)
Refer to the control panel's specific instructions for silencing and resetting the alarm.
Maintenance
Regular maintenance ensures the longevity and reliability of your sump pump system.
Monthly Checks:
- Test Primary Pump: Pour several gallons of water into the sump pit to ensure the primary pump activates and discharges water properly.
- Test Backup Pump: Unplug the primary pump's power cord (or simulate a power outage) and pour water into the pit. Verify the backup pump activates and the alarm sounds. Reconnect primary pump power after testing.
- Check Battery: Ensure the battery terminals are clean and free of corrosion. Verify the control panel indicates a healthy battery charge.
- Inspect Sump Pit: Remove any debris, dirt, or sediment from the sump pit that could obstruct pump operation or float switches.
- Inspect Float Switches: Ensure both float switches move freely and are not obstructed by wires, pipes, or debris.
Annual Checks:
- Clean Pumps: Disconnect power to both pumps. Remove them from the pit and thoroughly clean any accumulated debris from impellers and housings.
- Check Check Valve: Ensure the check valve is functioning correctly and not leaking.
- Battery Replacement: Deep cycle batteries typically last 3-5 years. Consider replacing the battery proactively to ensure reliable backup power.
Troubleshooting
This section addresses common issues you might encounter with your sump pump system.
| Problem | Possible Cause | Solution |
|---|---|---|
| Pump does not turn on | No power; tripped breaker; clogged impeller; faulty float switch. | Check power supply and GFCI. Reset breaker. Clear impeller. Inspect/replace float switch. |
| Pump runs continuously | Stuck float switch; check valve failure; undersized pump; continuous water inflow. | Free float switch. Inspect/replace check valve. Consult a professional for pump sizing or water inflow issues. |
| Backup pump alarm sounds | Power outage; primary pump failure; low battery; backup pump activation. | Check household power. Inspect primary pump. Check battery charge and connections. Silence alarm and investigate cause. |
| Pump is noisy or vibrates excessively | Debris in impeller; worn bearings; pump not seated properly. | Disconnect power and clear impeller. If noise persists, professional service may be required. Ensure pump is stable in pit. |
If you are unable to resolve an issue, contact a qualified plumber or the manufacturer's support.
Specifications
- Model: PF92952
- Primary Pump Horsepower: 0.33 HP
- Maximum Flow Rate: 60 Gallons Per Minute
- Primary Pump Voltage: 120 Volts AC
- Backup Pump Voltage: 12 Volts DC
- Power Source: Battery Powered (Backup), AC (Primary)
- Material: Cast Iron (Primary Pump), Stainless Steel (Fasteners)
- Item Weight: Approximately 20 Pounds
- Product Dimensions: 17.5 x 12.5 x 27.5 inches (Approximate)
- UPC: 781889224984
Warranty and Support
For warranty information and technical support, please refer to the documentation included with your purchase or visit the official PROFLO website. Keep your purchase receipt as proof of purchase.
For further assistance, you may contact PROFLO customer service. Contact details are typically available on the manufacturer's website or product packaging.





