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SKU: 99752153
Grundfos Hydro Multi-E 3 x CRNE 3-5 Three Phase 3 x 0.55kW Variable Speed 304ss Booster Pump Set with 24L Tank
Australia-Wide
(08) 9240 2992
Official Grundfos
Peace of Mind
Product Overview
Commercial fish processing factories maintaining hygienic wash flumes operate the Hydro Multi-E 3 CRNE 3-5. Operating three CRNE 3-5 pumps in parallel duty, the booster automatically cuts pumps in and out to track line velocity. Quote part number 99752153 to have the entire pre-commissioned assembly delivered to site.
The multistage setup produces up to 270 L/min during heavy wash cycles. Up to 48 metres of shut-off head is generated to overcome vertical riser friction. Advanced Multi-Master firmware shares operating duties directly between pump heads, providing immediate fail-safe handover if an individual drive is isolated.
Arriving fully piped and pre-wired, the booster package includes stainless steel pipework, two Rp 2 inch threaded manifold connections, isolation and non-return valves, pressure sensors, plus a 24L diaphragm tank. It connects to a 3 x 380-415 V supply at 50 / 60 Hz with combined rated current of 4.41 A (3 x 1.47 A per pump). Motors carry IP55 sealing with maximum pressure of 10 bar. Liquid-temperature suitability is 5°C to 60°C, and inlet pressure is rated to 10 bar.
Facility operators depend on the package across food production facilities, logistics distribution hubs and aquatic sports centres to prevent morning pressure drop. Variable-speed motor modulation makes the set a practical clean-water pressure-boosting solution for both new plant rooms and system upgrades.
FEATURES
- Variable speed comes from frequency converters matched to IE5 permanent magnet motors, keeping the booster set in its efficient range.
- The system pairs three CRNE 3-5 pumps in parallel duty, controlled as a single coordinated system.
- Integrated Grundfos GO compatibility supports configuration, logging and diagnostics from a smartphone.
- At P2 each main pump is 0.55 kW, covering the duty without oversizing the frame.
- An integrated 24L diaphragm tank carries small draw-offs and limits pump cycling.
- Multi-Master redundancy means either pump can act as controller, with seamless changeover on fault.
- Power use precisely tracks demand, avoiding the waste of fixed-speed alternates.
- Maximum operating pressure of 10 bar with motors sealed to IP55.
- The controller tracks the pressure setpoint with proportional deviation alerts before conditions become faults.
- Pump staging follows demand automatically: pumps enter at low speed as pressure drops, ramp to equal speed, and exit as flow fades.
- Factory assembled and wet-tested, the set arrives pre-configured for straightforward installation.
- The system protects its pumps against dry running if the incoming supply is lost.
- Stainless steel manifolds provide two Rp 2 inch threaded manifold connections ready for plant pipework.
What's Included
- 3 x Grundfos CRNE 3-5 vertical multistage pumps
- IE5 permanent magnet motors with integrated frequency converters
- Stainless steel suction manifold
- Stainless steel discharge manifold
- Non-return valves
- Isolation valves
- Pressure sensors/transmitters
- Pressure gauge
- 24L diaphragm pressure tank
- Factory assembled and tested booster system
SPECIFICATIONS
| Max Flow | 270 L/Min |
| Max Head | 48 m |
| Power | 3 x 0.55 kW / 415v |
| Rated Current | 3 x 1.47 Amps |
| Suitable For | Commercial Water Supply, Process and Food-Grade Duties |
| Body Material | Stainless Steel |
| Liquid Temperature | 5°C to 60°C |
| Inlet Size | 50 mm |
| Outlet Size | 50 mm |
| Warranty | 24 Months |
Warranty & Returns
All products supplied by Foundation Pumps are covered by a minimum 12-month warranty unless otherwise stated. Some brands may offer longer manufacturer warranties. Warranty covers manufacturing defects, faulty materials and workmanship under normal use.
- Products must be installed correctly and in accordance with the manufacturer’s instructions.
- Warranty does not cover incorrect installation, misuse, dry running, normal wear and tear, unauthorised repairs or damage caused by external factors.
- Proof of purchase, photos, videos and installation details may be requested when assessing a warranty claim.
- The customer is responsible for returning the product to Foundation Pumps or the nominated service centre unless otherwise agreed.
- Removal, reinstallation, labour and associated site costs are generally the customer’s responsibility unless required under Australian Consumer Law.
- Change-of-mind returns may be accepted within 30 days provided the product is unused, uninstalled and returned in its original packaging.
- Customers are responsible for return freight costs for change-of-mind returns.
- Restocking fees may apply to special-order, bulky or non-stocked products.
- Used, installed or specially ordered products may not be eligible for change-of-mind returns.
- If a product arrives damaged or faulty, please contact Foundation Pumps as soon as possible so we can assist with the appropriate repair, replacement or refund.
Your rights under Australian Consumer Law are not affected.
What maximum delivery flow does this multi-pump system provide to maintain header line pressure?
Across variable demand cycles, the Grundfos Hydro Multi-E 3 CRNE 3-5 U2 A-A-I-I-DU (part number 99752153) maintains up to 270 L/min total water throughput into the ringmain.
Which variable frequency electric motors provide mechanical power to this booster assembly?
Inverter-driven electric propulsion on the Hydro Multi-E 3 CRNE 3-5 provides mechanical output via three 0.55 kW IE5 permanent-magnet MGE electric units from a 3 x 380-415 V electrical supply.
What maximum head pressure does this variable speed booster system produce across the pipework?
Across high-lift distribution piping, the Hydro-Multi-E-3-CRNE-3-5 supplies up to 48 m total dynamic head with an operating pressure rating of 10 bar.
What plumbing manifold connections and valve equipment are factory mounted on this assembly?
Factory pipework configuration on the Hydro Multi E 3 CRNE 3 5 incorporates R 2 stainless steel manifolds, complete with individual pump isolating valves and line check valves.
Which manufacturer warranty terms protect this packaged variable frequency booster set?
Australian warranty protection on the 3 CRNE 3-5 (Hydro Multi-E) features a comprehensive Grundfos two-year manufacturer warranty covering the pumps, manifold headers, and motors.
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