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SKU: 99752138
Grundfos Hydro Multi-E 3 x CRNE 3-5 Single Phase 3 x 0.55kW Variable Speed Booster Pump Set with 24L Tank
Australia-Wide
(08) 9240 2992
Official Grundfos
Peace of Mind
Product Overview
Commercial textile processing laundries running heavy extraction cycles choose the Hydro Multi-E 3 CRNE 3-5. Staged parallel operation between three CRNE 3-5 pumps maintains consistent line pressure without erratic cycling. The complete booster system ships factory assembled and certified under part number 99752138.
Variable frequency control supports flow volumes up to 270 L/min. Line pressure is maintained with up to 47 metres of maximum delivery head. Advanced Multi-Master firmware shares operating duties directly between pump heads, providing immediate fail-safe handover if an individual drive is isolated.
Delivered as an all-in-one pumping skid, the booster incorporates 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 1 x 200-240 V supply at 50 / 60 Hz with combined rated current of 10 A (3 x 3.33 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.
Plant rooms across Australia utilise the package for food production facilities, logistics distribution hubs and aquatic sports centres to ensure compliant supply. Variable-speed motor modulation makes the set a practical clean-water pressure-boosting solution for both new plant rooms and system upgrades.
FEATURES
- Each pump is driven by IE5 permanent magnet motors with frequency-controlled speed matching demand.
- Multi-Master redundancy means either pump can act as controller, with seamless changeover on fault.
- Maximum operating pressure of 10 bar with motors sealed to IP55.
- Dry-running protection is built into the control, protecting the pumps if the suction supply is interrupted.
- Factory assembled and wet-tested, the set arrives pre-configured for straightforward installation.
- The system pairs three CRNE 3-5 pumps in parallel duty, controlled as a single coordinated system.
- Stainless steel manifolds provide two Rp 2 inch threaded manifold connections ready for plant pipework.
- Energy draw matches the actual job because speed follows demand, not a fixed curve.
- Both constant-pressure and proportional-pressure modes are available, so plant rooms can tune response to pipework.
- At P2 each main pump is 0.55 kW, covering the duty without oversizing the frame.
- Integrated Grundfos GO compatibility supports configuration, logging and diagnostics from a smartphone.
- An integrated 24L diaphragm tank carries small draw-offs and limits pump cycling.
- Pump staging follows demand automatically: pumps enter at low speed as pressure drops, ramp to equal speed, and exit as flow fades.
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 | 47 m |
| Power | 3 x 0.55 kW / 240v |
| Rated Current | 3 x 3.33 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 electric motor power and supply voltage powers each pump in this packaged booster set?
Variable frequency drive electronics on the Grundfos Hydro Multi-E 3 CRNE 3-5 U8 A-A-I-I-DU (part number 99752138) control three IE5 permanent-magnet MGE electric motors of 0.55 kW each from a 1 x 200-240 V power supply.
Which system working pressure and maximum vertical head does this multistage booster unit produce?
Header line pressure created by the Hydro Multi-E 3 CRNE 3-5 delivers up to 47 m total dynamic head across pipework rated up to 10 bar.
How are the parallel centrifugal stages connected to common suction and discharge manifolds?
Interconnecting fluid headers on the Hydro-Multi-E-3-CRNE-3-5 incorporate R 2 stainless steel suction and discharge pipework with built-in isolating valves and non-return valves.
How is this multistage booster skid protected under manufacturer warranty terms?
The complete factory package of the Hydro Multi E 3 CRNE 3 5 is supported by a Grundfos two-year manufacturer warranty encompassing the base skid, motors, and wet ends.
How much discharge water flow does this variable speed booster unit supply across the distribution ringmain?
Discharge performance allows the 3 CRNE 3-5 (Hydro Multi-E) to supply up to 270 L/min of water across distribution ringmains.
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