It is well known that pumps are essential components in RV caravans, and they can fail unexpectedly, causing inconvenience during travel. The RV water supply system typically includes a clean water tank, plastic or copper piping, a water pump, a gray water tank, and a drain valve. While the pumps used in different vehicles may vary slightly, most modern RVs on the market today use Shurflo 12-volt DC pumps. These pumps operate on 12V DC power even when connected to a 120V AC power source at a campsite.
When you turn on the faucet, the system detects a pre-set pressure of 30 psi (pounds per square inch) and activates the pump to supply water. Once the faucet is closed, the water continues to flow until the pressure in the entire system stabilizes. However, if the pump fails outside of normal operation—such as due to vibration or hard-wired connections like brass fittings—it might be time to replace the hose or check for wear and tear.
To reduce noise from the pump, it’s recommended to install it on a rubber mat or a sound-dampening pad. Here are some self-check steps for common pump issues: first, check if there's any residual water in the tank, as standing water can lead to buildup and affect the pump’s performance. Also, inspect for water stains or mineral deposits, which can interfere with the water table’s function.
Regularly check the fuse to ensure proper electrical connection between the pump and the power source. It’s also important to verify the battery and transformer connections, as poor contact can cause malfunctions. Inspect the wiring regularly to prevent power loss or short circuits. If the pump isn’t supplying water properly, check the rubber diaphragm for blockages or damage. This can be done by removing the three screws on the pump housing and inspecting the internal components.
Additionally, open the shut-off valve to confirm that the line between the fresh water tank and the pump is clear and free of obstructions. Taking these simple steps can help maintain the efficiency and longevity of your RV’s water pump system.
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