💧 Gecko Maelstrom CMS-1 Spa Circulation Pump – 0.2/0.12 HP Single Speed

Whisper-quiet efficiency meets compact engineering for crystal clear spa water

📋 Product Overview

The Gecko Maelstrom CMS-1 represents the pinnacle of circulation pump technology for hot tubs and spas. This advanced single-speed pump delivers exceptional water flow whilst consuming minimal energy, circulating up to 30% more water than competing pumps in the same time period. The result is shorter filtration cycles, reduced energy bills, and consistently clearer spa water.

Engineered with Gecko’s renowned precision manufacturing, the CMS-1 operates at a remarkably quiet 44 dB—comparable to a gentle rainfall. This makes it ideal for residential installations where peace and relaxation are paramount. The pump’s compact design takes up 23% less space than standard circulation pumps, making it perfect for tight equipment compartments.

The Maelstrom CMS-1 serves as the direct replacement for the discontinued Aqua-Flo Circ-Master (CMHP) series, offering improved performance and reliability. With its sealed motor block design, high-temperature capacitor rated to 85°C, and Gecko’s premium Universeal mechanical seal, this pump is built for years of continuous 24/7 operation.

⭐ Key Features

✅ Ultra-Quiet Operation – Runs at just 44 dB, quieter than a gentle rain for peaceful spa enjoyment

✅ 30% Higher Efficiency – Moves significantly more water per watt, reducing filtration cycles and energy costs

✅ Compact Design – 23% smaller footprint than competing pumps, ideal for space-constrained installations

✅ High-Temperature Capacitor – Rated to 85°C for extended service life in demanding environments

✅ Sealed Bearing System – Ensures smooth, quiet operation with minimal wear over time

✅ Gecko Universeal – Premium quality mechanical seal reduces leak potential and maintenance requirements

✅ Rotatable Wet End – Allows flexible positioning to suit various installation configurations

✅ Removable Mounting Feet – Versatile installation options with simple bracket mounting

✅ Class F Insulation – Thermally protected motor rated for 60°C ambient temperature operation

✅ UL Approved – Certified to UL safety standards (E62386) for peace of mind

✅ Pre-Wired for Easy Installation – Includes 2.4 m (96″) cable with AMP plug connector

✅ Aqua-Flo Circ-Master Replacement – Direct substitute for discontinued CMHP pump series

🔧 Technical Specifications

Specification	Value
Pump Type	Circulation Pump
Model Number	CMS-1-V256-0.2-1
Manufacturer Part Number	0810-690000
Generic Part Number	0800-600000
Motor Power (60Hz)	0.2 HP / 230W
Motor Power (50Hz)	0.12 HP / 200W
Speed Settings	Single Speed
Motor Type	PSC (Permanent Split Capacitor)
Flow Rate Max (60Hz)	320 LPM (85 GPM)
Flow Rate Max (50Hz)	260 LPM (70 GPM)
Maximum Head (60Hz)	3.81 m (12.5 ft)
Maximum Head (50Hz)	2.53 m (8.3 ft)
Voltage	220-240V
Frequency	50/60 Hz
Amperage (60Hz)	1.0 A
Amperage (50Hz)	0.8 A
Frame Type	IEC 56
Discharge Port	1.5″ MBT
Suction Port	1.5″ MBT
Port Position	Side discharge
Wet End Position	0 o’clock (rotatable)
Dimensions (L×W×H)	269 × 184 × 163 mm
Weight	5.44 kg (12 lb)
Seal Type	Gecko Universeal
Insulation Class	Class F
Capacitor Rating	High temperature 85°C
Maximum Ambient Temperature	60°C
Maximum Water Temperature	50°C
Noise Level	~44 dB
Bearing Type	Sealed
Certification	UL Approved (E62386)
Cable Length	2.4 m (96″) with AMP plug

⚡ Electrical Requirements

Electrical Specification	UK Requirement
Supply Voltage	220-240V
Frequency	50 Hz
Phase	Single Phase
Full Load Current (50Hz)	0.8 A
Minimum Circuit Breaker	6 A (recommended)
Cable Size (Recommended)	1.0 mm² minimum
Connection Type	AMP plug (pre-wired)

⚠️ IMPORTANT ELECTRICAL SAFETY:

All electrical work must be carried out by a qualified electrician in accordance with UK wiring regulations (BS 7671). Hot tub and spa installations require RCD protection (30mA). Ensure proper earth bonding is completed as per current regulations. The pump must be connected to a suitably rated isolator switch for maintenance access.

🔄 Compatibility Guide

Frame Dimensions

Frame Type	Description	Mounting Pattern
IEC 56	European standard frame	Industry standard bolt pattern

This Pump Configuration

📍 Frame: IEC 56 Frame
📍 Wet End: 1.5″ connections
📍 Discharge: 1.5″ side discharge
📍 Suction: 1.5″ intake
📍 Wet End Position: 0 o’clock (rotatable)

Direct Replacement For

This pump is the official replacement for discontinued models:

• ✅ Aqua-Flo Circ-Master CMHP (PN 02420014-2010)
• ✅ Gecko Circ-Master (PN 02920006-2010)

Available Adaptors

Part Number	Description
0800-500024	1.5″ to 2″ adaptor kit with O-ring
0800-500028	1.5″ union extender

💡 Installation Note: When replacing an Aqua-Flo Circ-Master, be aware that the suction is approximately 25 mm shorter and the discharge is approximately 30 mm shorter. The union extender kit (available separately from Parts4Tubs) may help avoid replumbing. If your existing pump has a centre discharge configuration, additional pipework modifications may be required as the CMS-1 features side discharge.

🛠️ Installation Requirements

Mounting Specifications

Requirement	Specification
Mounting Position	Horizontal (recommended)
Base	Solid, level, vibration-dampening surface
Ventilation Clearance	Minimum 50 mm around motor for cooling
Access Space	150 mm minimum for maintenance
Mounting Feet	Removable for flexible installation

Plumbing Connections

Connection	Size
Suction Inlet	1.5″ MBT
Discharge Outlet	1.5″ MBT (side)
Tailpieces	2 × included
Drain Plugs	3 × wing nut style

Installation Notes

⚠️ Pump must be installed below water level – Flooded suction is required for proper operation and priming

⚠️ Never run the pump dry – Running without water causes immediate seal damage and motor overheating

⚠️ Ensure proper bonding to earth – All metal components must be bonded per BS 7671 requirements

⚠️ Check port orientation – The rotatable wet end allows adjustment, but verify discharge direction before final plumbing

⚠️ Use PTFE tape or appropriate sealant – On all threaded connections to prevent leaks

🔧 Maintenance Guide

Routine Maintenance Schedule

Task	Frequency	Notes
Visual leak inspection	Monthly	Check around seal and union connections
Inspect union tightness	Monthly	Hand-tighten only if needed
Clean strainer/filter basket	As needed	Remove debris that may restrict flow
Check amperage draw	Annually	Should match rated specification (0.8 A at 50Hz)
Inspect motor ventilation	Quarterly	Keep air vents clear of debris and dust
Check mounting security	Quarterly	Tighten bolts if any vibration loosening occurs
Drain plug inspection	Quarterly	Ensure wing nuts are secure

Warning Signs – Consider Pump Replacement If

• ⚠️ Unusual noise such as grinding, screeching, or humming
• ⚠️ Water leaking from the mechanical seal area
• ⚠️ Motor repeatedly trips the circuit breaker
• ⚠️ Noticeably reduced water flow rate
• ⚠️ Motor housing becomes excessively hot to touch
• ⚠️ Pump fails to prime or loses prime frequently

Seal Information

📍 Seal Type: Gecko Universeal (high quality mechanical seal)
⚠️ Replace seal at first sign of leakage – Early replacement prevents motor damage

🎯 Ideal Applications

Application	Suitability	Notes
♨️ Hot Tub Circulation	✅ Excellent	Primary design purpose – continuous 24/7 filtration
♨️ Spa Water Filtration	✅ Excellent	Optimises filtration cycles with high flow rate
♨️ Swim Spa Circulation	✅ Suitable	Ideal for secondary circulation systems
🛁 Whirlpool Bath	✅ Suitable	Quiet operation perfect for indoor installations
♨️ Heating System Circulation	✅ Excellent	Continuous water movement for efficient heating

Best Suited For:

• Spas requiring quiet, continuous circulation
• Replacement of Aqua-Flo Circ-Master pumps
• Energy-conscious installations seeking reduced running costs
• Space-limited equipment compartments
• 24/7 filtration systems

❓ Frequently Asked Questions

Q: What horsepower is this pump? A: The CMS-1 is rated at 0.2 HP (230W) at 60Hz or 0.12 HP (200W) at 50Hz. For UK installations running at 50Hz, the effective output is 0.12 HP with a power consumption of 200 watts.

Q: Will this pump fit my hot tub? A: This pump features an IEC 56 frame with 1.5″ intake and discharge connections. If you’re replacing an Aqua-Flo Circ-Master CMHP, this is the direct replacement. Note that the connections are slightly shorter, so a union extender kit may be required. Check your existing pump’s frame type and port sizes before ordering.

Q: What voltage does this pump require? A: The pump operates on 220-240V at 50/60Hz, making it fully compatible with UK mains supply. All electrical installation must be carried out by a qualified electrician in accordance with BS 7671.

Q: Is this a single or dual speed pump? A: This is a single-speed circulation pump designed for continuous operation. It runs at one constant speed, optimised for efficient water circulation and filtration.

Q: What size are the connections? A: Both suction and discharge ports are 1.5″ MBT (male buttress thread). The pump includes two tailpieces for connection. A 1.5″ to 2″ adaptor kit is available separately if larger connections are required.

Q: How quiet is this pump? A: The CMS-1 operates at approximately 44 dB, which is comparable to the sound of gentle rainfall. This makes it one of the quietest circulation pumps available, ideal for residential installations.

Q: What warranty is included? A: Warranty terms are provided by the manufacturer. Contact Parts4Tubs for full warranty details and coverage information.

Q: Can I use this as a replacement for my Aqua-Flo Circ-Master? A: Yes, the Gecko Maelstrom CMS-1 is the official direct replacement for the discontinued Aqua-Flo Circ-Master CMHP series. Be aware that dimensions differ slightly—the suction is approximately 25 mm shorter and discharge approximately 30 mm shorter—so a union extender may be needed.

Q: Does it come with the cable and plug? A: Yes, the pump includes a 2.4 m (96″) pre-wired cable with an AMP plug connector for easy installation.

📥 Downloads & Resources

📄 Product Flyer (PDF) – Official Gecko specifications and performance curves

🏆 Why Choose the Gecko Maelstrom CMS-1

✅ Superior Efficiency – Moves 30% more water than competing pumps, reducing filtration cycles and energy consumption

✅ Whisper-Quiet Operation – At just 44 dB, enjoy your spa without pump noise disturbance

✅ Compact Footprint – 23% smaller than standard circulation pumps, fitting easily in tight spaces

✅ Premium Build Quality – Sealed bearings, high-temp capacitor, and Gecko Universeal for long-term reliability

✅ Proven Manufacturer – Gecko Alliance is a leading name in spa equipment, trusted by spa manufacturers worldwide

✅ Easy Replacement – Direct fit for Aqua-Flo Circ-Master systems with available adaptor kits

✅ Continuous Duty Rated – Designed for 24/7 operation in demanding spa environments

✅ Safety Certified – UL approved to international safety standards

🤝 Why Buy from Parts4Tubs

✅ UK-Based Company – Local support from spa equipment specialists based in Northamptonshire

✅ Fast UK Delivery – Quick dispatch to get your spa back up and running

✅ Expert Technical Advice – Knowledgeable team to help with compatibility questions

✅ Competitive Pricing – Great value on genuine Gecko products

✅ Full Warranty Support – Manufacturer-backed warranty with local service

✅ Easy Returns – 30-day returns policy for peace of mind

✅ Replacement Parts Available – Seals, adaptors, and union extenders in stock

✅ Established Reputation – Built on the success of buildahottub.com

✨ Summary

The Gecko Maelstrom CMS-1 is a premium single-speed circulation pump delivering exceptional efficiency at just 0.12 HP (50Hz). With ultra-quiet 44 dB operation, 30% improved water flow, and a compact 23% smaller footprint, it’s the ideal choice for hot tub and spa filtration systems. As the direct replacement for Aqua-Flo Circ-Master pumps, it offers proven Gecko reliability backed by UL certification and quality engineering. Order from Parts4Tubs today for fast UK delivery and expert support.