🛁 LX WP300-II Spa Pump – 3HP Dual Speed Jet Pump

Maximum Power Dual-Speed Performance for Large Hot Tubs and Swim Spas

⚙️ Product Overview

The LX WP300-II is a high-performance 3.0HP dual-speed massage pump designed for water circulation and jet operation in demanding hot tub applications. As the most powerful pump in the LX WP series, the WP300-II delivers exceptional jet power for larger spas and swim spas requiring maximum hydrotherapy performance.

This dual-speed design provides powerful jet operation on high speed at 2900 RPM, whilst the efficient low speed at 1450 RPM handles water circulation during heating and filtration cycles. The 2.2kW motor draws 10 amps on high speed for maximum power and just 3.2 amps on low speed for economical standby operation.

Featuring 2-inch union connections and supplied with a 4-core plain cable, the WP300-II is engineered for straightforward installation and compatibility with a wide range of spa control systems. Commonly found in Chinese-manufactured spas, Coasts spas, and select Jacuzzi models, this pump has proven itself as a reliable choice for hot tub owners demanding top-tier jet performance.

✨ Key Features

✅ 3.0HP Dual-Speed Motor – High speed (2.2kW/2900 RPM) for powerful jets, low speed (1450 RPM) for efficient circulation

✅ High-Performance Design – Maximum power output for demanding hot tub and swim spa applications

✅ Energy-Efficient Low Speed – Draws only 3.2A during filtration cycles, reducing electricity costs

✅ 2″ Union Connections – Standard 2-inch plumbing for compatibility with most spa systems

✅ 4-Core Pre-Wired Cable – Ready for dual-speed control box connection

✅ 40µF Capacitor – Properly sized for reliable motor starting and operation

✅ Compact Dimensions – 435mm × 200mm × 235mm fits standard equipment bays

✅ Massage Pump Design – Optimised for powerful jet operation and water circulation

✅ Proven Compatibility – Works with Chinese spas, Coasts spas, and Jacuzzi models

✅ Dual-Speed Versatility – High speed for jets, low speed for heating and filter cycles

🔧 Technical Specifications

Motor Specifications

Specification	High Speed	Low Speed
Power Reference	3.0 HP	–
Motor Output	2.2 kW	–
RPM	2900	1450
Amperage	10.0 A	3.2 A
Capacitor	40 µF	–

Physical Dimensions

Specification	Value
Length	435 mm
Width	200 mm
Height	235 mm
Plumbing Size	2″

Connection Specifications

Specification	Value
Plumbing Connections	2-inch unions
Electrical Cable	4-core plain cable (supplied)
Speed Type	2 Speed
Pump Type	Massage Pump

⚡ Electrical Requirements

Electrical Specification	Requirement
High Speed Amperage	10.0 A
Low Speed Amperage	3.2 A
Capacitor Rating	40 µF
Cable Type	4-Core plain cable (supplied)

Wiring Configuration

The pump is supplied with a 4-core cable for dual-speed operation:

• 2 × Live wires (High and Low speed)
• 1 × Neutral (Common)
• 1 × Earth

⚠️ IMPORTANT ELECTRICAL SAFETY NOTICE:

All electrical work must be carried out by a qualified electrician in accordance with UK wiring regulations (BS 7671). Hot tub installations require RCD protection (30mA) for safety. Never attempt electrical connections yourself unless you are appropriately qualified.

💡 Tip: You may need to swap the cable from your old pump as control box connection types vary between spa brands. Make a note of which wire controls each speed before disconnecting your old pump.

🔗 Compatibility Guide

Plumbing Configuration

Component	Specification
Plumbing Size	2″
Connection Type	2-inch unions

Compatible Hot Tub Brands

The LX WP300-II is commonly found in and compatible with:

• ♨️ Chinese-manufactured hot tubs and swim spas
• ♨️ Coasts Spas (not the American “Coast Spas”)
• ♨️ Select Jacuzzi models

🛠️ Installation Requirements

Mounting Specifications

Requirement	Specification
Dimensions (L × W × H)	435mm × 200mm × 235mm
Base Surface	Solid, level, vibration-dampening
Ventilation	Ensure adequate clearance for motor cooling

Plumbing Connections

Connection	Size
Plumbing	2″ unions

Installation Notes

⚠️ Pump must be installed below water level (flooded suction) – This ensures proper priming and prevents air lock issues.

⚠️ Never run the pump dry – Dry running causes immediate seal damage and may destroy the pump. Always ensure water is present before starting.

⚠️ Ensure proper electrical bonding to earth – All metal components must be correctly earthed as per BS 7671 requirements.

⚠️ Higher amperage draw – At 10A on high speed, ensure your electrical circuit and breaker are appropriately rated for this pump.

💡 Cable Connection: The pump has four wires – two live (one for each speed), one neutral, and one earth. Note which wire controls each speed when disconnecting your old pump, as colours can vary between manufacturers.

🔄 Maintenance Guide

Routine Maintenance Schedule

Task	Frequency	Notes
Check for water leaks	Monthly	Inspect around seal area and union connections
Inspect union connections	Monthly	Tighten if any looseness detected
Check motor vents	Quarterly	Ensure vents are clear of debris for proper cooling
Inspect mounting bolts	Quarterly	Tighten if loose to reduce vibration
Listen for unusual sounds	Monthly	Early detection of bearing or impeller issues
Check amperage draw	Annually	Should read 10A (high) / 3.2A (low) under load
Verify both speeds operate	Monthly	Test high and low speed function

Warning Signs – When to Replace

Consider replacing your pump if you notice:

• 🔊 Unusual noises such as grinding, screeching, or humming on either speed
• 💧 Water leaking from the mechanical seal area
• ⚡ Motor repeatedly tripping the circuit breaker
• 💨 Significantly reduced water flow from jets
• 🌡️ Motor housing becoming excessively hot to touch
• 🔄 One speed working but not the other (may indicate winding failure)
• ⏱️ Pump struggling to prime or losing prime frequently

🎯 Ideal Applications

Application	Suitability	Notes
♨️ Large Hot Tub Jet Pump	✅ Excellent	3HP provides powerful massage jet operation
♨️ Spa Circulation Pump	✅ Good	Low speed at 3.2A for efficient circulation
♨️ Combined Jet/Circ Pump	✅ Excellent	Dual-speed design serves both functions
♨️ Swim Spa	✅ Excellent	High power ideal for swim spa jet systems
♨️ Multi-Jet Systems	✅ Excellent	3HP handles extensive jet configurations

❓ Frequently Asked Questions

Q: What horsepower is this pump?

A: The WP300-II is rated at 3.0HP with a 2.2kW motor output on high speed.

Q: Will this pump fit my hot tub?

A: This pump has 2-inch plumbing connections. Check your existing pump’s connection size and dimensions (435mm × 200mm × 235mm) for compatibility.

Q: What is the amperage draw?

A: High speed draws 10.0A and low speed draws 3.2A. Ensure your electrical circuit is appropriately rated.

Q: How does the dual-speed operation work?

A: The pump has two separate live wires – one for high speed (2900 RPM) and one for low speed (1450 RPM). Your spa control system switches between them.

Q: What size are the plumbing connections?

A: 2-inch unions are used for both suction and discharge connections.

Q: What capacitor does this pump use?

A: The pump uses a 40µF capacitor.

Q: Which hot tub brands is this compatible with?

A: The WP300-II is compatible with Chinese-manufactured spas, Coasts spas (not the American “Coast Spas”), and some Jacuzzi models.

Q: How do I know if my pump needs replacing?

A: Common signs include unusual grinding or screeching noises, water leaking from the seal area, reduced jet flow, the motor tripping the breaker repeatedly, or one speed failing while the other works.

Q: What electrical cable is supplied?

A: The pump comes with a 4-core plain cable for dual-speed connection.

🏆 Why Choose the LX WP300-II

✅ Maximum Power – 3.0HP / 2.2kW delivers the strongest jet performance in the WP series

✅ Dual-Speed Versatility – High speed for powerful jets, low speed for energy-efficient filtration

✅ Energy Efficient – Low speed draws only 3.2A, reducing electricity costs during filter cycles

✅ Proven Compatibility – Works with Chinese spas, Coasts spas, and Jacuzzi models

✅ Compact Design – 435mm × 200mm × 235mm fits standard equipment bays

✅ Ready to Install – Supplied with 4-core cable and 2″ union connections

✅ Quality Construction – Built to withstand continuous operation in demanding spa environments

🤝 Why Buy from Parts4Tubs

✅ UK-Based Company – Local support from spa parts specialists who understand your needs

✅ Fast UK Delivery – Quick dispatch to get your hot tub back up and running promptly

✅ Expert Technical Advice – Knowledgeable team available to help with compatibility questions and installation guidance

✅ Competitive Pricing – Great value on genuine quality parts without compromising on reliability

✅ Full Warranty Support – Peace of mind with comprehensive warranty coverage

✅ Easy Returns – Hassle-free returns within 30 days if you’re not completely satisfied

✅ Replacement Parts Available – Seal kits, impellers, capacitors, and other spares in stock

✅ Real People, Real Help – Buy from a person, not just the internet. We’re here to help with your spa parts needs

💪 Summary

The LX WP300-II is a powerful 3.0HP dual-speed massage pump designed for large hot tubs and swim spas demanding maximum jet performance. With its 2.2kW motor delivering 2900 RPM on high speed for intense hydrotherapy massage and an efficient 3.2A draw on low speed at 1450 RPM for circulation, this pump offers the perfect balance of power and economy. Featuring 2-inch union connections, compact 435mm × 200mm × 235mm dimensions, and a pre-wired 4-core cable, the WP300-II is engineered for straightforward installation. Compatible with Chinese spas, Coasts spas, and select Jacuzzi models, the WP300-II is the ultimate choice for hot tub owners who demand powerful, reliable jet performance.

The hot tub industry doesnt make it easy for you when you are trying to match up the size of the unions (the part that screws your pipe work onto the pumps) Below you can see the physical sizes of the collars, and how they relate to the actual union size you need. So a measurement of 2.5", edge to edge on the collar of the pump is actually a 1.5" union - confusing - absolutely! If you are not sure, give me a shout!

How do I Replace a Hot Tub Pump?

Here's a general step-by-step guide on how to replace a hot tub pump. Keep in mind that the specific steps may vary depending on your hot tub's make and model, so it's essential to consult your hot tub's manual for model-specific instructions. If you're not comfortable with this procedure, it's a good idea to seek professional assistance.

Materials You'll Need:

• Replacement pump
• Pipe wrench
• Adjustable wrench
• Screwdriver
• Pipe sealant (thread tape or plumber's putty)
• PVC primer and cement (if you have PVC plumbing)
• Teflon tape (for threaded connections)

Procedure:

1. Turn Off the Power: Before you begin, ensure the hot tub's power supply is turned off at the circuit breaker or disconnect switch. Safety should always be a priority when working with electrical components.
2. Drain the Hot Tub: If your hot tub is not already empty, you'll need to drain it. Follow your hot tub's manual or manufacturer's instructions for proper draining. (You might not need to do this if you can lock the pump off with the gate valves)
3. Locate the Pump: Identify the location of the existing pump in your hot tub. It's usually located near the equipment area or in a designated pump compartment.
4. Disconnect the Electrical Wiring: Carefully disconnect the electrical wiring from the old pump. This typically involves removing the electrical conduit cover, unscrewing wire nuts, and disconnecting the wires from the terminals. Be sure to note the wire connections or take a picture for reference when connecting the new pump.
5. Disconnect the Plumbing: Depending on your hot tub's plumbing setup, you'll need to disconnect the plumbing connections to the pump. Use a pipe wrench or adjustable wrench to loosen and remove the fittings. Be prepared for some water spillage when disconnecting the plumbing.
6. Remove the Old Pump: Once the electrical and plumbing connections are detached, carefully remove the old pump from its mounting position. Some pumps may be secured with mounting brackets or bolts.
7. Prepare the New Pump: If the new pump is not pre-assembled, you may need to attach fittings, unions, or adapters to match your hot tub's plumbing. Ensure that you use the appropriate sealant or Teflon tape on threaded connections to prevent leaks.
8. Mount the New Pump: Position the new pump in the same location as the old one and secure it in place using the mounting brackets or bolts.
9. Reconnect Plumbing: Reconnect the plumbing to the new pump, ensuring that all connections are tight and secure. If your hot tub uses PVC plumbing, use PVC primer and cement to bond the connections properly.
10. Reconnect Electrical Wiring: Reconnect the electrical wiring to the new pump, following the notes or pictures you took earlier. Make sure all wires are properly connected and secure.
11. Turn On the Power: Restore power to the hot tub by switching on the circuit breaker or reconnecting the disconnect switch.
12. Test the Pump: Turn on the hot tub's pump to ensure that it's working correctly. Check for any signs of leaks or irregularities in the plumbing connections.
13. Refill the Hot Tub: Once you've confirmed that the new pump is functioning properly, refill the hot tub with water.
14. Check for Leaks: Inspect the plumbing connections for any leaks. If you find any, turn off the pump, drain the tub again, and reseal the connections as needed.
15. Monitor: Keep an eye on the pump and plumbing for the next few days to ensure everything is functioning correctly and that there are no further issues.

Remember that this is a general guideline, and the specific steps may vary based on your hot tub's design. If you're unsure or uncomfortable with any aspect of this process, please do get in touch, happy to help.

How do I know what size hot tub pump I have?

Determining the size of your hot tub pump is an important step when it comes to maintenance or replacement. To find out the size of your hot tub pump, follow these steps:

1. Check the Manual: The easiest way to determine the size of your hot tub pump is to consult the owner's manual or user documentation that came with your hot tub. The manual typically contains detailed information about the specifications and components of your hot tub, including the pump.
2. Look at the Pump Housing: If you don't have access to the manual or it doesn't provide the information you need, inspect the pump itself. Most hot tub pumps have a label or plate on the pump housing that displays essential details, including the pump's model number, manufacturer, and specifications. You can then send that to me or Google it.
3. Measure the Pump: If the label is missing or damaged, you can measure the pump's dimensions. Measure the diameter of the pump's wet end (the part where the water flows) and the length of the wet end. These measurements can help identify the size and capacity of the pump.
4. Consult the Manufacturer: If you can't find the information on the pump or in the manual, contact the hot tub manufacturer or a reputable dealer. Provide them with your hot tub's model and serial number, and they should be able to identify the correct pump size for your specific hot tub.
5. Online Research: You can also search online using the pump's model number or hot tub's make and model. Many manufacturers provide detailed information about their products on their websites, and you may find specifications for your pump model.

Once you have determined the size and specifications of your hot tub pump, you can proceed with maintenance, repairs, or replacement if necessary. Keep in mind that replacing a hot tub pump with the same size and capacity as the original is crucial to ensure proper water circulation and filtration in your hot tub. If you're unsure about any aspect of this process, get in touch, always happy to help.