Introduction
The Wellmate WM-25 and WM0330 Classic Fiberglass Pressure Tanks are designed for residential and commercial water systems, offering a durable and efficient solution for water storage and pressure maintenance. These composite tanks feature fiberglass construction, making them resistant to rust and corrosion, and an epoxy-resin sealed outer shell that prevents dents and scratches. Their lightweight design facilitates easier and quicker installation compared to traditional steel tanks. The lead-free construction ensures that no undesirable chemicals are introduced into the water system.
Key features of the Wellmate WM-Series tanks include:
- Replaceable air cell for simplified field servicing.
- Enhanced drawdown capacity compared to similarly sized steel tanks, leading to greater system efficiency.
- Corrosion-proof composite construction, ideal for various environments, including coastal regions.
- Lighter weight, contributing to quicker and less costly installation.
- Wider pressure setting differential for increased system flexibility.
Figure 1: Wellmate WM-25 / WM0330 Classic Fiberglass Pressure Tank. This image displays the exterior of the pressure tank, highlighting its cylindrical shape and the Wellmate branding.
Setup and Installation
Proper installation is crucial for the optimal performance and longevity of your Wellmate pressure tank. It is recommended that installation be performed by a qualified professional.
Pre-Installation Checks
- Inspect the tank for any shipping damage. Do not install a damaged tank.
- Ensure the installation location is level, stable, and protected from freezing temperatures.
- Verify that the system's maximum operating pressure does not exceed the tank's rated pressure (125 psi / 8.6 bar).
Installation Steps
- Positioning: Place the tank on a firm, level surface. Ensure adequate clearance for future maintenance.
- Plumbing Connections: Connect the tank to the water system using appropriate plumbing fittings. Ensure all connections are watertight. The tank features a bottom inlet/outlet one-piece drain.
- Air Charge Adjustment: Before filling the tank with water, adjust the air pre-charge pressure. The pre-charge pressure should typically be set 2 psi below the pump cut-in pressure. Use an accurate pressure gauge for this adjustment.
- System Start-up: Slowly fill the system with water, checking for leaks at all connections. Once the system is full, cycle the pump to ensure proper operation and pressure switch settings.
Refer to local plumbing codes and regulations for specific installation requirements.
Operating Instructions
The Wellmate pressure tank operates automatically as part of your water system, maintaining water pressure and providing storage. Once properly installed and charged, minimal user interaction is required.
Normal Operation
- The tank works in conjunction with your water pump and pressure switch to deliver water at a consistent pressure.
- The internal air cell expands and contracts to absorb pressure fluctuations and store water, reducing pump cycling.
Monitoring System Performance
Periodically observe your water system's performance. Consistent water pressure and infrequent pump cycling indicate proper operation. A sudden drop in pressure or frequent pump cycling may suggest an issue requiring attention.
Maintenance
Wellmate tanks are designed for low maintenance. However, periodic checks are recommended to ensure continued optimal performance.
Annual Air Charge Verification
- At least once a year, verify the tank's air pre-charge pressure.
- To check, first shut off the water supply to the tank and drain the tank completely.
- Use a tire pressure gauge to check the pressure at the air valve on top of the tank.
- Adjust the pressure to 2 psi below the pump cut-in pressure using an air pump if necessary.
- Restore water supply and check for proper system operation.
Air Cell Replacement
The Wellmate tank features a replaceable air cell, which simplifies servicing if the internal bladder ever fails. Consult a qualified technician for air cell replacement.
Figure 2: Internal Structure of Wellmate Pressure Tank. This diagram illustrates the components of the tank, including the durable interior air cell, seamless inner shell, outer shell of fiberglass strands, sturdy polymeric base, and bottom inlet/outlet drain.
Troubleshooting
This section provides guidance on common issues you might encounter with your Wellmate pressure tank. For complex problems, contact a qualified service technician.
| Problem | Possible Cause | Solution |
|---|---|---|
| Pump cycles too frequently (short cycling) | Low or no air pre-charge in the tank; Waterlogged tank; Leaking plumbing. | Check and adjust air pre-charge (see Maintenance); Inspect for and repair leaks in the plumbing system. |
| No water or low water pressure | Pump not running; Pressure switch malfunction; Clogged pipes; Tank completely waterlogged. | Check power to pump; Inspect pressure switch; Consult a plumber for pipe inspection; Check and adjust air pre-charge. |
| Water leaking from air valve | Damaged air cell (bladder). | The air cell needs to be replaced. Contact a qualified technician. |
| Tank exterior sweating | Condensation due to cold water in a warm, humid environment. | This is normal and not a malfunction. Ensure adequate ventilation around the tank. |
Specifications
The following table provides detailed performance data for the Wellmate WM-Series Classic Pressure Tanks, including the WM-25 and WM0330 models.
Figure 3: Wellmate WM Series Classic Performance Data. This table details specifications such as capacity, maximum operating pressure, drawdown, diameter, overall height, inlet connection, system connection, assembly weight, and pallet quantity for various WM-Series models, including WM-25/WM0330.
General Specifications for WM-25 / WM0330
- Capacity: 86.7 gallons (328 liters)
- Maximum Operating Pressure: 125 psi (8.6 bar)
- Drawdown (30/50 psi setting): 26.8 gallons (101.5 liters)
- Diameter: 24 inches (61 cm)
- Overall Height: 55 1/4 inches (140 cm)
- Inlet/Outlet Connection: 1 1/4" male NPT
- Assembly Weight: 72.75 lbs (33.0 kg)
- Construction: Fiberglass composite with epoxy-resin sealed outer shell
- Internal: Replaceable air cell
- Manufacturer: Wellmate
- Date First Available: April 18, 2018
Note: Maximum external operating temperature 120°F (49°C). Maximum internal operating temperature 100°F (38°C). Minimum operating temperature 40°F (4°C). Diameter, height and weight may vary slightly without notice. Drawdown factors are based on Boyle's law. Actual drawdowns will vary depending upon system variables, including the accuracy and operation of the pressure switch and gauge and operating temperature of the system.
Warranty and Support
Warranty Information
Wellmate offers an extended labor warranty option for homeowners. For specific warranty terms and conditions, including duration and coverage details, please refer to the warranty documentation provided with your purchase or contact Wellmate customer service directly. Keep your proof of purchase for warranty claims.
Customer Support
For technical assistance, troubleshooting beyond this manual, or to inquire about parts and service, please contact Wellmate customer support. Contact information can typically be found on the manufacturer's official website or on the product packaging.
When contacting support, please have your product model (WM-25 or WM0330) and date of purchase readily available.
