The Ultimate Caravan Water Upgrade: How to Add a Luxury Shower & Lake-Wash System with Marco Pump UP3/E
- Admin EES
- 26 jun
- 4 minuten om te lezen
If you’re travelling and living "the life" in a caravan, you know that water is gold. There is nothing worse than weak pressure when you're trying to wash the dishes, or a shower that fluctuates between a sad trickle and an uncontrollable blast.
If you are ready to upgrade your off-grid comfort, Marco’s UP3/E pumps and it's cousins (smaller UP2/E, larger: UP6/E, UP12/E) and their electronic controllers are the ultimate game-changers. Whether you want to add a proper outdoor shower or wash your rig using a nearby lake, here is your guide to achieving the next level on your portable water system.
How to Add a Shower Function to My Caravan?
Adding a shower to your caravan is easier than you think, especially when you use a dedicated full kit with a hose and trigger nozzle. The UP3/E pump series is perfectly suited for this because of its constant pressure delivery.
According to the operation manual, here is how you create an efficient shower setup:
The Water Source: Connect the intake hose of your UP3/E pump to your freshwater tank.
The Power: Wire the pump to your caravan’s 12V/24V DC system (always use the recommended fuse size from the manual).
The Shower Kit: Connect the outlet to your full shower kit. Because the UP3/E uses an electronic controller, you don't need a massive expansion tank. When you press the trigger on the shower-head, the pump instantly senses the pressure drop and starts up smoothly.
Can I Wash My Van with Water from a Lake?
Yes, absolutely! But you need to do it right so you don't destroy your pump. If you are parked by a beautiful lake and want to wash off the road grime, you can use an upgrade dual pump set or a single UP3/E configuration to draft water directly from nature.
⚠️ Important Manual Note: When pumping from a lake, always use a 50-mesh inlet filter (strainer). Lake water contains sand, algae, and small debris that can damage the internal PTFE gears of your UP3/E pump.
By utilizing a dual-pump setup, you can dedicate one pump to your clean internal water system and the second pump for external, heavy-duty cleaning tasks like washing the van.
Controlling the Speed of Water: Why Is This Important?
Why do Marco UP3/E pumps stand out compared to traditional pumps? It all comes down to intelligent speed control.
Traditional caravan pumps (like basic models from Shurflo or Flojet) run at 100% speed or 0% speed. This causes "cycling"—the pump constantly turns on and off, creating loud noise, vibrating the pipes, and wasting battery power.
With the UP3/E’s integrated electronic controller, the pump controls the speed of the water motor based on consumption.
If you only open the tap a little bit to wash your hands, the pump spins slowly and quietly, using minimal power.
If you open the shower fully, the pump ramps up to maximum speed to give you hotel-grade pressure.
This drastically extends the lifespan of your pump, saves your caravan's battery, and keeps things quiet at night.
Automatic Switches with Sensors: Why Do They Help?
Older caravan setups require mechanical pressure switches. These are notorious for clicking constantly, wearing out, and requiring manual calibration.
The UP3/E and the rest of the "UPX/E" series features built-in automatic electronic switches with pressure sensors. The help with:
Zero Maintenance: They automatically calibrate themselves.
Dry-Running Protection: If your water tank goes completely dry, the sensor detects the lack of pressure and shuts the pump down automatically after a few seconds. This prevents the motor from burning out.
Leak Detection: If there is a micro-leak in your caravan's plumbing, the sensor recognizes the abnormal behavior and shuts down to prevent flooding your van.
What Accessories Do I Need for My UP3/E or UP6/E?
To get the most out of your Marco smart pump, you should look into the official accessory ecosystem:
Inlet Water Strainers: Non-negotiable for keeping your gears safe.
Control Panels: Remote LED panels that let you monitor pump activity and reset errors from inside the cabin.
Full Hose & Spray Kits: Perfect for the outdoor shower and van-washing setups mentioned above.
Why Is My Caravan Pump Not Priming Itself?
You turn on your Marco UP3/E pump, the motor hums, but no water comes out. If your pump refuses to draw water, it is usually due to one of these common issues from the operation manual:
Installed Too High: The pump is mounted too far above the water tank.
Ran Dry Too Long: It has been running without water for too long.
Stored for Winter: After long periods of inactivity, the pump chamber dries out. Solution: Pour a little water directly into the pump chamber before starting.
Air Leaks in the Intake Line: The tiniest air leak ruins the vacuum. Check for cracks in the pipe, loose hose clamps, or a clogged strainer with worn seals.
Air Leaks on the Pump Faceplate: Loose fixing screws or a worn front cover seal.
Bad Electrical Wiring: Loose connections can drop the voltage, slowing the motor down.
Blocked Pipes or Restrictive Valves: Blockages in the lines or using restrictive accessories (like an Aquastop valve or a closed spray pistol).
Sharp Hose Loops: Kinks or tight loops in the outlet tube that trap air.
💡 Quick Fix: 90% of priming issues are solved by tightening your hose clamps or manually pouring a little water into the pump chamber after winter storage!
Need Replacement Parts for Your UP3/E? You Can Order Them Directly from Us!
Which Marco Pump Model Is Best for My Caravan?
Before you buy, it’s vital to compare the flow rates and pressures to see which model fits your caravan's plumbing layout.
Model | Flow Rate (Max) | Pressure (Max) | Best Used For... |
UP2/E 12/24V Electronic water pressure system 10 l/min €160.00 | 10 L/min (2.6 GPM) | 2.5 bar (36 PSI) | Small campervans, single tap + toilet |
UP3/E 12/24V Electronic water pressure system 15 l/min €246.00 | 15 L/min (4.0 GPM) | 2.5 bar (36 PSI) | Standard caravans, luxury shower setups |
UP6/E 12V/24V Electronic Water Pressure system 26 l/min €498.00 | 26 L/min (6.9 GPM) | 2.5 bar (36 PSI) | Large motorhomes, dual-pump sets, heavy washing |
UP12/E 12/24V Electronic Water Pressure Pump 36 l/min €654.00 | 36 L/min (9.5 GPM) | 2.5 bar (36 PSI) | Even larger motorhomes |
UP12/E-DX 24V Electronic dual pump system + PCS 72 l/min 2.5-3.5 bar €1,826.00 | 72 L/min (19 GPM) | 2.5 bar (36 PSI) | Elite motorhomes. Can fill a 1500l jacuzzi in 20min. |
Ready to Upgrade Your Caravan Water System?
Don't settle for the loud, sputtering performance of standard diaphragm pumps like Shurflo or Whale. Marco UP3/E electronic gear pump are quiet, reliable, and intelligent water pressure that makes your caravan feel like a home.
Do you need help figuring out the exact wire gauge or fuse size for your specific caravan layout?
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