MC403 | 4hp (3kW) Calpeda 2.5″ Suction & Delivery Pump

Introduction

As an experienced hot tub enthusiast and parts supplier, I’m excited to introduce you to the MC403 Calpeda pump. This powerful 4hp (3kW) unit is a game-changer for your hot tub or spa system. With its robust construction and impressive performance, it’s designed to elevate your water circulation experience to new heights.

Key Features

The MC403 Calpeda pump boasts an array of features that set it apart from the competition:

Self-Priming Capability

Say goodbye to the hassle of manual priming. This pump can draw water up to 7 meters, making installation and operation a breeze.

Durable Construction

• Cast Iron Body and Impeller: Engineered for longevity and resistant to corrosion.
• Stainless Steel Shaft: Provides exceptional durability and smooth operation.

Integrated Strainer

Keeps debris out of your pump, extending its lifespan and maintaining optimal performance.

High-Quality Insulation

With Insulation Class F, this pump can handle higher temperatures without compromising performance.

Versatile Protection Rating

• IP54 protection as standard
• IP55 available for environments requiring extra protection

Flexible Motor Options

• Standard 50Hz motor
• 60Hz option available for specific power requirements

Why Choose the MC403 Calpeda Pump?

I’ve seen many pumps come and go, but the MC403 stands out for its reliability and efficiency. Its self-priming feature is a real time-saver, especially during installation or after maintenance. The cast iron construction gives it a solid feel that inspires confidence in its longevity.

The integral strainer is a feature I particularly appreciate. It’s surprising how much debris can find its way into a hot tub, and this strainer does an excellent job of protecting the pump’s internal components.

Applications

This versatile pump is ideal for:

• Hot tubs and spas
• Small swimming pools
• Water features
• Circulation systems in aquaculture

Installation and Maintenance

While the MC403 is designed for easy installation, I always recommend consulting with a professional for optimal setup. The pump’s self-priming capability makes initial startup straightforward, but proper placement and connection are crucial for long-term performance.

Regular maintenance is minimal, but important. I suggest checking the strainer periodically and cleaning it as needed to ensure unobstructed water flow.

Technical Specifications

Specification	Detail
Model	MC403 Calpeda
Power	4hp (3kW)
Suction & Delivery	2.5″
Priming	Self-priming
Body Material	Cast iron
Impeller Material	Cast iron
Shaft Material	Stainless steel
Insulation Class	F
Protection Rating	IP54 (IP55 available)
Frequency	50Hz (60Hz available)
Max Suction Lift	7 meters

Documentation

For detailed information on installation, operation, and maintenance, please refer to the following documents:

The MC403 Calpeda 2.5″ Suction & Delivery Pump is a robust, efficient, and versatile solution for your hot tub or spa needs. Its combination of power, durability, and user-friendly features makes it an excellent choice for both new installations and upgrades to existing systems.