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Wallace Maxipump MPEP-5000 automatic surface-mounted pump

Medium-flow water booster for multi-outlet homes and small commercial applications

  • Constant pressure delivery: Automatic press-control ensures reliable, steady water pressure across multiple taps, showers, and outlets.
  • High performance flow: Pumps up to 90 L/min with a maximum head of 53 m – ideal for medium multi-level homes and light commercial setups.
  • Durable stainless steel build: Corrosion-resistant multistage design engineered for long lasting performance.
  • Energy efficient operation: Quiet, economical performance with automatic start/stop control for reduced wear and reliable service.
  • Built-in protection systems: Automatic run-dry shutoff and overload protection safeguard pump and motor in continuous-use environments.

The Wallace MPEP-5000 automatic surface-mounted pump is designed for homes and small businesses that rely on consistent water pressure every day. With press-control technology, quiet operation, built-in run-dry and overload protection, the MPEP-5000 offers dependable performance with minimal maintenance.

Need help with your Wallace MPEP-5000 automatic surface-mounted pump? Aqua Works are your local experts for servicing, troubleshooting, and replacement advice — so you’ll always have reliable water on tap.

Wallace automatic horizontal multistage booster pump

  • Designed for tank or mains supply – suitable for both above-ground (preferred) and below-ground water tanks.
  • Surface-mounted system – easy installation beside your tank, in a pump shed, or at the point of supply.
  • Versatile performance – reliable operation on both mains pressure and low-pressure rural water systems.
  • Simple plumbing setup – 25 mm inlet and 25 mm outlet connections.
  • Fully automatic operation – pump starts and stops on demand, no manual intervention required.

 

Reliable domestic and commercial water booster

The Wallace automatic surface-mounted pump is ideal for multi-level homes, cafés, offices, workshops, and motels. Its press-control technology automatically maintains steady pressure, whether you are running a single tap or multiple showers at once. Unlike standard pumps that can surge or drop, the Wallace MPEP-5000 water booster pump delivers smooth, constant pressure where you need it most.

  • Automatic press-control: Starts and stops the pump in response to demand.
  • Constant water pressure: No more frustrating drops or bursts when outlets are used at the same time.
  • Quiet and efficient: Designed for everyday use with low noise and economical operation.
  • Built-in protection: Run-dry shutoff and overload protection safeguard the pump and extend service life.

 

Low maintenance booster pump

Engineered with stainless steel housing and impellers, the Wallace MPEP-5000 automatic pump is highly durable and resistant to corrosion. The compact multistage design ensures quiet performance with minimal maintenance required. For households and businesses, this means dependable water delivery without ongoing hassle.

 

Wallace MPEP-5000 automatic surface-mounted pump: Backed by warranty & local support

  • Powered by a 1.35 kW single-phase motor for efficient output.
  • Protected by a two-year parts and labour warranty.
  • Trusted Wallace quality with full service and support across New Zealand.

 

Call Aqua Works on 0800 278 288 today and get advice and support for your Wallace MPEP-5000 medium-flow water booster pump.

Additional information

Weight 15 kg

FAQ

Common pump problems and solutions with the Wallace MPEP-5000 automatic surface-mounted pump

Why won’t my Wallace pump start?

If the pump doesn’t start, it’s usually due to a lack of water supply, air trapped in the suction line, or a tripped power breaker. These issues prevent the press control from activating.

Check your water source, reset the breaker, and ensure suction lines are airtight. Once supply is restored and air removed, this in-built run-dry protection pump should restart normally.

 

Why is my Wallace pump noisy or vibrating?

Excessive noise or vibration is often caused by air in the suction line, loose fittings, cavitation (air bubbles collapsing), or poor mounting. Left unresolved, this can reduce performance and wear parts.

Bleed air from the suction line, secure fittings, place the multi-outlet home booster pump on a firm base, and ensure a steady water supply. Correct installation eliminates most noise issues.

 

Why is my pump losing pressure or flow?

Drops in pressure or flow are typically caused by a blocked inlet, dirty filters, or restrictions in the pipework. In some cases, the water source may not be delivering enough to meet demand.

Clean or replace filters regularly, check pipework for blockages, and confirm an adequate water supply. With clear lines, the Wallace booster pump for low-pressure system maintains steady pressure and flow across multiple outlets.

 

Why is my pump overheating or tripping the power?

Overheating or tripping can occur if the motor is overloaded, ventilation around the pump is poor, or if there are electrical supply fluctuations.

The MPEP-5000 high-efficiency water booster pump features thermal overload protection to prevent damage. Ensure good airflow around the pump, verify the power supply is stable, and check that plumbing restrictions aren’t causing excess strain.

 

Why is my pump leaking?

Worn seals, damaged gaskets, or extended periods of dry running usually cause leaks. Continuous leaks reduce system efficiency and can lead to water damage.

Inspect seals and gaskets regularly, replacing them as needed. The automatic run-dry shutoff helps protect internal seals, but leaks should be fixed promptly to avoid more serious problems.

 

Why does my pump cycle on and off too often?

Frequent cycling is often due to small plumbing leaks, incorrect pressure control settings, or a mismatch between pump size and water demand.

Check for leaks in your system, confirm control settings are correct, and ensure the MPEP-5000 constant-pressure water pump capacity suits your needs. Installing a small pressure tank can also reduce unnecessary cycling.

 

What if my pump won’t prime?

Priming problems occur when the suction line contains air, the joints aren’t airtight, or the water level is too low. Without proper priming, the pump cannot draw water.

Fill the suction line with water, tighten all joints, and confirm adequate water supply. Keep suction lift within recommended limits (up to 5 m) for smooth operation.

Can air bubbles damage the impeller?

Yes. Prolonged cavitation — when vapor bubbles form and collapse inside the pump — can erode the impellers and reduce efficiency.

Ensure adequate water supply, keep suction lift as low as possible, and avoid restrictions at the inlet. The MPEP-5000’s multistage stainless steel impellers are durable, but cavitation should be prevented for long service life.

 

Can the Wallace MPEP-5000 booster pump run both the house and garden sprinklers?

The automatic Wallace pump for above-ground tanks delivers strong flow and pressure for medium to large homes and can comfortably run multiple household outlets alongside light irrigation. For extensive gardens or commercial sprinkler systems, upgrading to the MPEP-6000 is recommended.