Franklin MH5 original manufacturer performance curves at 50Hz
Franklin MH5 original manufacturer performance curves at 50Hz
Franklin MH5 original manufacturer performance curves at 50Hz

FRANKLIN 5AMH7B-53 THREE-PHASE MULTISTAGE PUMP

The Franklin 5AMH7B-53 is a three-phase horizontal multistage pump for clean-water transfer, pressure boosting, irrigation and washdown. It is supplied as a bare pump-and-motor unit; automatic start/stop operation requires separate controls, and no pressure tank is included.

✓ 5AMH7B: 75LPM at 49.2m head; maximum head 80.7m
✓ Inlet: 1 1/4" BSP female thread
✓ Outlet: 1" BSP female thread
✓ Three phase, 380–415V, 50Hz; electrician connection and external motor protection required.
✓ Not self-priming; fill pump and suction pipe before starting

Franklin MH Pump Installation & Operating Manual

Franklin MH5 original manufacturer performance curves at 50Hz

The Franklin 5AMH7B-53 is a three-phase horizontal multistage pump for clean-water transfer, pressure boosting, irrigation and washdown.

These listings are for bare pump-and-motor units. Suitable separate controls are required for automatic operation as taps open and close; a pressure tank is not included.

5AMH7B: 75LPM at 49.2m head; maximum head 80.7m.

The paired figures show flow at a stated head. Maximum head occurs at zero flow, separately from the listed flow. Allow for inlet conditions, height differences and pipe losses when selecting the pump.

Inlet: 1 1/4" BSP female thread.
Outlet: 1" BSP female thread.

The pump body, impellers and diffusers are 304 stainless steel. Use clean water without solid particles or fibres, compatible with the pump materials. Maximum water temperature is 85°C for domestic and commercial use; the 110°C limit is for industrial applications only.

The pump is not self-priming. Fill the pump casing and suction pipe before starting, and use suitable inlet valves to retain prime where suction lift is required. Install on a firm base with drainage, supported pipework, ventilation and protection from weather and freezing. Do not run without water or against a closed outlet.

Maximum operating pressure is 1000kPa; inlet pressure and the pressure added by the pump must remain within this limit.

Three phase, 380–415V, 50Hz; electrician connection and external motor protection required. Do not assume the three-phase motor has built-in overload protection.

Two-year Franklin Electric pump warranty, subject to its terms.

Franklin MH Pump Installation & Operating Manual

✓ Application
Clean-water transfer, pressure boosting, domestic water supply, garden irrigation and washdown.

✓ Warranty
Two-year Franklin Electric pump warranty, subject to its terms.

✓ Model Specifications
5AMH7B-53
Flow/head reference: 75LPM at 49.2m head.
Maximum pump head: 80.7m (zero flow).
Inlet: 1 1/4" BSP female thread.
Outlet: 1" BSP female thread.
Three phase, 380–415V, 50Hz; electrician connection and external motor protection required.
Motor output P2: 1.5kW.

✓ Supplied Operation
Bare pump-and-motor unit; pressure tank and automatic demand controls are supplied separately.
The pump does not automatically start and stop as taps open and close without suitable separate controls.

✓ Performance & Pressure Limits
The paired figures show the flow available at a stated head.
Application flow range: 33.3–116.7LPM; select the stage count for the required head.
Maximum head is the zero-flow figure and occurs separately from the listed flow.
Maximum operating pressure: 1000kPa. Inlet pressure plus pump pressure must remain within this limit.
Select the pump for the required flow and head, allowing for height differences and pipe losses.
Do not run against a closed outlet or below the manufacturer's minimum operating flow.

✓ Water Supply
Clean, non-aggressive liquids compatible with the pump materials, without solids or fibres.
Maximum water temperature: 85°C for domestic/commercial use; 110°C for industrial use only.

✓ Installation & Priming
Not self-priming; fill the pump casing and suction pipe with water before starting.
Use suitable inlet valves to retain prime in suction-lift installations; check the suction conditions against the pump curve.
Install on a firm base with supported pipework, drainage and protection from weather and freezing.
Leave at least 100mm clearance at the motor cooling fan, following the manual.
Provide suitable protection against loss of water supply; do not run dry.

✓ Construction
304 stainless-steel pump body, impellers and diffusers.
Standard MH3/MH5 seal: ceramic/carbon with EPDM elastomer.
Horizontal close-coupled multistage construction.

✓ Electrical Supply & Protection
380–415V three phase, 50Hz.
External overload protection and connection by an electrician required.
Maximum ambient temperature: 40°C.
Motor insulation: Class F. Refer to the supplied motor nameplate for its enclosure rating, output and current.

✓ Product Identification
Model: 5AMH7B-53.
Stock SKU: PUFR96143005307.

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