🔧 Gecko Aqua-Flo Flo-Master FMCP Spa Pump – 1.5 HP 2-Speed 230V (02615005-1010)
Precision-engineered jet pump with industry-leading flow rates for powerful hydrotherapy
💧 Product Overview
The Gecko Aqua-Flo Flo-Master FMCP (02615005-1010) is a high-performance 2-speed jet pump designed for portable spas, hot tubs, and whirlpool baths. Rated at 1.5 operational horsepower (2.0 total horsepower) and operating on 230V/60Hz, this center discharge pump delivers exceptional flow rates through its unique high-performance impeller design that exceeds all tested competition.
Built on a compact 48-frame platform with 1-1/2″ MBT connections, the FMCP is ideal for entry-level to mid-range spas requiring powerful jet performance. The dual-speed motor provides full-power hydrotherapy on high speed and quiet, energy-efficient filtration on low speed. Every pump ships with quick-release compression fittings (unions) for hassle-free installation and maintenance. Manufactured by Gecko Alliance — one of the most trusted names in the spa industry — this OEM pump is engineered with reinforced plastic construction, stainless steel fasteners, and a long-life mechanical seal for years of dependable service.
⭐ Key Features
- ✅ 1.5 HP Operational / 2.0 HP Total – Powerful dual-rated motor delivers robust jet performance for multi-jet spas
- ✅ 2-Speed Motor – High speed for invigorating hydrotherapy jets; low speed for energy-efficient filtration and quiet circulation
- ✅ 230V / 60Hz Operation – US-standard electrical supply for reliable, efficient performance
- ✅ 48-Frame Design – Industry-standard compact mounting for broad compatibility with existing spa configurations
- ✅ Center Discharge (CD) – Top-mounted discharge port with rotatable wet end for flexible plumbing orientation
- ✅ 1-1/2″ MBT Connections – Standard suction and discharge ports (2-3/8″ outside diameter across threads) with included compression union fittings
- ✅ High-Performance Impeller – Proprietary design provides flow rates up to 150 GPM, exceeding all tested competition
- ✅ Single Spring Elastomer Bellows Mechanical Seal – Compact, unitized PS-200 seal delivers maximum durability and drip-proof performance
- ✅ Built-In Overload Protection – Motor thermal protection prevents overheating and extends pump lifespan
- ✅ Reinforced Engineered Plastic Construction – Lightweight yet durable volute and wet end resist corrosion from spa chemicals
- ✅ Stainless Steel Fasteners – Resist rust and corrosion in demanding hot tub environments
- ✅ 2-Year Manufacturer Warranty – OEM warranty coverage from Gecko Alliance for peace of mind
⚙️ Technical Specifications
| Specification | Value |
|---|---|
| Pump Type | Jet Pump (Center Discharge) |
| Series | Flo-Master FMCP |
| Manufacturer | Gecko Alliance (Aqua-Flo by Gecko) |
| Model Number | 02615005-1010 |
| Operational Horsepower | 1.5 HP |
| Total Horsepower | 2.0 HP |
| Speed Settings | 2-Speed (Dual Speed) |
| Flow Rate (Max) | Up to 150 GPM |
| Voltage | 230V |
| Frequency | 60 Hz |
| Amperage (High Speed) | 6.8 A |
| Amperage (Low Speed) | 2.5 A |
| Frame Type | 48 Frame (48Y) |
| Wet End | 1-1/2 inch |
| Discharge Port | 1-1/2 inch (Center Discharge) |
| Suction Port | 1-1/2 inch |
| Port Outside Diameter | 2-3/8 inch (across threads) |
| Port Connection Type | MBT (Male Buttress Thread) with Compression Unions |
| Discharge Position | Center (top) – rotatable |
| Seal Type | PS-200 Mechanical Seal (Single Spring Elastomer Bellows) |
| Impeller Part Number | 91693651 |
| Volute Part Number | 92770603 |
| Complete Wet End | 91040820-000 |
| Construction | Reinforced engineered plastic with stainless steel fasteners |
| Cord Included | No – cord sold separately |
| Unions Included | Yes – 2 compression fittings included |
| Country of Origin | USA |
| Warranty | 2 Years (Manufacturer) |
⚠️ Note: In 2012, Gecko Alliance changed the way Aqua-Flo pumps are rated. Pumps are now assigned both an operational horsepower (OHP) and a total horsepower (THP) rating. If replacing an older Aqua-Flo pump, match the operational HP rating rather than the total HP.
⚡ Electrical Requirements
| Electrical Spec | Requirement |
|---|---|
| Supply Voltage | 230V |
| Frequency | 60 Hz |
| Phase | Single |
| Full Load Amps (High Speed) | 6.8 A |
| Full Load Amps (Low Speed) | 2.5 A |
| Bonding Wire | No. 8 AWG (8.4 mm²) solid copper conductor minimum |
| Wiring Configuration | 4-wire service (dual speed) |
| Cord Included | No – see accessories |
⚠️ IMPORTANT ELECTRICAL SAFETY INFORMATION:
All electrical work must be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and local building codes.
Hot tubs and spas require GFCI (Ground Fault Circuit Interrupter) protection — this is mandatory per NEC requirements.
A dedicated circuit is required — do not share with other appliances.
Upon installation, the motor must be bonded with no smaller than a No. 8 AWG solid copper conductor per the National Electrical Code. The bonding connection should run from the accessible wire connector on the motor to all metal parts of the spa or hot tub structure and to all electrical equipment, metal conduit, and metal piping within 5 feet (1.5 m) of the inside walls of the spa or hot tub.
For electrical connections, refer to the wiring diagram on the motor rating plate.
🔗 Compatibility Guide
48 Frame Bolt Pattern:
| Measurement | Value |
|---|---|
| Between Bolts (Parallel) | 3-5/8 inches |
| X-Pattern (Diagonal) | 5-3/16 inches |
| Bolt Head Size | 1/4 inch |
This Pump:
- 📍 Frame: 48 Frame (48Y)
- 📍 Wet End: 1-1/2 inch
- 📍 Discharge: 1-1/2 inch Center Discharge (top)
- 📍 Suction: 1-1/2 inch
- 📍 Connection OD: 2-3/8 inch across threads
- 📍 Unions: Included (compression fittings)
Replaces These Part Numbers:
- 5121-416
- 625240
- AQF-10-408
- T55CXBLH-961
- 305164
- 121498
Alternate Part Numbers:
- AF026150051010
- 344022098 HRZ
- 34-402-2098 HRZ
- 03517366-13
- 03515558-1310
- 02615005-1010HZW
💡 Tip: The FMCP wet end can be rotated 90 degrees on the motor to change the discharge position. Simply loosen the four motor through-bolts, rotate (“clock”) the wet end to match your existing plumbing orientation, then re-tighten the bolts.
🛠️ Installation Requirements
Mounting:
| Requirement | Specification |
|---|---|
| Mounting Position | Horizontal (below water level / flooded suction) |
| Base | Solid, level, vibration-dampening surface |
| Access | Provide adequate clearance for inspection and maintenance |
| Location | As close to the water source as possible |
Plumbing:
| Connection | Size |
|---|---|
| Suction | 1-1/2 inch MBT |
| Discharge | 1-1/2 inch MBT (Center) |
| Union Type | Quick-release compression fittings (included) |
| Optional | Adapts to hair and lint traps for self-priming applications |
Installation Notes:
⚠️ This pump was designed for below water level (flooded suction) applications. Make sure the pump is installed at a level that will allow the pump casing (volute) to be completely filled with water.
⚠️ Never run the pump dry — always ensure the pump casing is filled with water before starting. Allow a reasonable amount of time for priming.
⚠️ Make sure compression fittings are correctly aligned with pump connections to allow the o-ring to make a proper seal. Hand tighten only — do not use a wrench to tighten fittings.
⚠️ Do NOT use thread seal tape (PTFE tape) or sealants on Aqua-Flo compression fittings. Only use sealants on NPT threaded connections.
⚠️ Ensure proper grounding and bonding per NEC requirements. GFCI protection is required by code.
⚠️ This pump does not include a cord — a 4-wire service cord is required for 2-speed 230V operation.
🔧 Maintenance Guide
Routine Maintenance:
| Task | Frequency | Notes |
|---|---|---|
| Check for leaks | Monthly | Inspect around seal and union fittings |
| Inspect compression fittings | Monthly | Ensure properly aligned and hand-tight only |
| Clean strainer/trap basket | As needed | Inspect frequently; do not strike basket when cleaning |
| Inspect trap cover o-ring | Regularly | Replace as necessary |
| Keep motor clean | Quarterly | Ensure louvered openings are free from debris and obstructions |
| Check mounting bolts | Quarterly | Tighten if loose |
| Check amperage draw | Annually | Should match rating plate (6.8A high / 2.5A low) |
Warning Signs — Replace or Service Pump If:
- Unusual noise (grinding, screeching, humming without starting)
- Water leaking from the shaft seal area
- Motor trips breaker repeatedly
- Reduced water flow despite clean filter
- Motor overheating and cycling on/off
- Pump will not prime
Seal Replacement:
- 📍 Seal Type: PS-200 (#200) — Single spring elastomer bellows mechanical seal
- 📍 Seal Part Number: 92500150
- ⚠️ It is advisable to replace the complete seal assembly (both ceramic and carbon sides) every time the pump is disassembled
- ⚠️ Disconnect all electrical power before performing any service work
Winterization:
To prevent freeze damage, disconnect all electrical power, drain thoroughly, and clean out any debris. Protect the pump and motor from the elements by covering or storing in a dry, well-ventilated room.
🎯 Ideal Applications
| Application | Suitability | Notes |
|---|---|---|
| ♨️ Hot tub / spa jet pump | Yes | Ideal for entry-level to mid-range spas with multiple jets |
| ♨️ Booster jet pump | Yes | Designed as a booster jet pump for multi-jet applications |
| ♨️ Spa circulation (low speed) | Yes | Low speed provides energy-efficient filtration |
| 🛁 Whirlpool bath | Yes | High-performance impeller suitable for whirlpool applications |
❓ Frequently Asked Questions
Q: What horsepower is this pump? A: This pump is rated at 1.5 operational horsepower (OHP) and 2.0 total horsepower (THP). If replacing an older Aqua-Flo pump, match the operational HP rating (1.5 HP), not the total HP.
Q: Will this fit my hot tub? A: This pump has a 48 frame with 1-1/2 inch wet end connections (2-3/8″ outside diameter across threads) and center discharge. Check your existing pump’s frame type (48 vs 56), wet end size, and discharge orientation (center vs side) to confirm compatibility. The wet end can be rotated on the motor to match your plumbing.
Q: What voltage does this pump require? A: 230V / 60Hz with a dedicated circuit. All electrical installation must be performed by a licensed electrician with GFCI protection per NEC requirements.
Q: Does this pump run on 115V or 230V? A: This specific model (02615005-1010) operates on 230V only. If you need a 115V version, the model number is 02615000-1010. Using the wrong voltage will damage the motor — always verify your existing pump’s voltage before ordering.
Q: Is this a single or dual speed pump? A: This is a 2-speed (dual speed) pump. High speed runs at 6.8 amps for powerful jet performance, and low speed runs at 2.5 amps for quiet filtration and circulation. A 4-wire service cord is required.
Q: What size are the ports? A: Both suction and discharge ports are 1-1/2 inch MBT (Male Buttress Thread), measuring 2-3/8 inches across the outside of the threads. Two compression union fittings are included.
Q: Does a cord come with this pump? A: No, this pump does not include a power cord. A 4-wire service cord compatible with 230V 2-speed operation must be purchased separately.
Q: What’s the difference between FMCP and FMHP? A: The FMCP has a center discharge (top of the wet end), while the FMHP has a side discharge (offset). Both use the same frame, impeller, and seal. The wet end/volute is different between the two series.
Q: What warranty is included? A: This pump includes a 2-year manufacturer warranty from Gecko Alliance. Contact Parts4Tubs for full warranty terms and support.
Q: How do I know if my pump needs replacing? A: Signs include unusual noise (grinding or screeching), water leaking from the seal, reduced flow, the motor tripping the circuit breaker, the motor overheating and cycling on/off, or the pump failing to prime.
Q: Do I need a GFCI breaker? A: Yes, GFCI (Ground Fault Circuit Interrupter) protection is required by the National Electrical Code (NEC) for all hot tub and spa installations.
📥 Downloads & Resources
📄 Flo-Master HP & CP Techbook (Installation & Operating Instructions) – Complete installation guide, troubleshooting, seal replacement instructions, and parts diagrams
🔩 FMCP Replacement Parts List
| Ref. | Part Number | Description |
|---|---|---|
| 1 | — | Motor (contact Parts4Tubs for correct motor) |
| 2 | 92770603 | Volute, FMCP Series |
| 3 | 92500150 | Seal Replacement, PS-200 (#200) |
| 4 | 91693651 | Impeller, 1.5 HP |
| 5 | 92200270 | O-ring, Volute, #251 |
| 6 | 92830062 | Wear Ring |
| 7 | 91231402 | Cover, Suction, FMCP Series, Standard Drain |
| 7A | 56910040 | Replacement Kit Cover, Complete |
| 8 | 99730050 | Screw, #8-32 x 5/8″ |
| 9 | 92200120 | O-ring, Pipe Plug, #011 |
| 10 | 92290015 | Pipe Plug, 1/4″ NPSM |
| 11 | 92200140 | O-ring, #226 |
| 12 | 91431050 | Fitting, Tail Piece, 1-1/2″ |
| 13 | 91431000 | Fitting, Union Nut, 1-1/2″ |
| 14 | 52201000 | Fitting, Compression, Complete, 1-1/2″ |
| 15 | 91040281 | Assembly, Trap, Complete 5″ x 1-1/2″ |
| 16 | 50100120 | Threaded Adapter, 1-1/2″ x 2″ |
| 17 | 92200210 | O-ring, #230 |
| 18 | 91431200 | Tail Piece, 2″ |
| 19 | 91431150 | Union Nut, 2″ |
| 20 | 52202100 | Compression Fitting, 2″ x 2″ with Threaded Adapter 1-1/2″ x 2″ |
| Q | 91040820-000 | Assembly, Wet End Complete, 1.5 HP (includes Ref. #2-10) |
⚠️ Note: FMC, FMH, and FMV replacement parts (including gray impellers) are no longer available. Do not attempt to replace plastic parts with current items. Replace with the corresponding wet end in the correct horsepower.
🏆 Why Choose the Gecko Aqua-Flo Flo-Master FMCP
- ✅ Industry-leading flow rates – Proprietary impeller design provides up to 150 GPM, exceeding all tested competition and delivering powerful hydrotherapy jets
- ✅ OEM quality and reliability – Genuine Gecko Alliance pump engineered with reinforced plastic construction and stainless steel fasteners for long-lasting durability
- ✅ Versatile 2-speed operation – High speed for powerful jets, low speed for quiet and energy-efficient filtration — reducing operating costs
- ✅ Easy installation and maintenance – Quick-release compression fittings, rotatable wet end, and standard 48-frame mounting for straightforward replacement
- ✅ Cool-running drip-proof seal – PS-200 single spring elastomer bellows mechanical seal virtually eliminates seal burnout
- ✅ 2-year manufacturer warranty – Backed by Gecko Alliance’s industry-recognized warranty for complete peace of mind
🤝 Why Buy from Parts4Tubs
- ✅ US-based support for American customers
- ✅ Fast shipping across the United States
- ✅ Expert advice from spa and hot tub specialists
- ✅ Competitive pricing in USD
- ✅ Full warranty support
- ✅ Hassle-free returns
- ✅ Replacement seals, impellers, wet ends, and parts available
- ✅ Dedicated customer service team
✨ Summary
The Gecko Aqua-Flo Flo-Master FMCP (02615005-1010) is a 1.5 HP, 2-speed, 230V center discharge jet pump built on a compact 48-frame platform. Featuring Gecko’s proprietary high-performance impeller with flow rates up to 150 GPM, built-in overload protection, a long-life PS-200 mechanical seal, and included compression union fittings, this OEM pump is the reliable choice for powering spa jets. Backed by a 2-year manufacturer warranty. Order today from Parts4Tubs for fast US shipping and expert support.
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Hot Tub Pump Collar & Union Size Chart
| Union Size | Collar Size | Thread OD | Union OD | O-Ring Size |
|---|---|---|---|---|
|
1.5"
Female Buttress
Thread (FBT) |
2.5" / 64mm
(Tip to Tip)
Measurement |
2-1/2"
64mm
|
2-13/16"
71mm
|
2-5/16" OD
59mm
|
|
2"
Female Buttress
Thread (FBT) |
3.1" / 78mm
(Tip to Tip)
Measurement |
3-1/16"
78mm
|
3-3/8"
81mm
|
2-15/16" OD
75mm
|
|
2.5"
Female Buttress
Thread (FBT) |
3.6" / 91mm
(Tip to Tip)
Measurement |
3-5/8"
91mm
|
4-1/4"
108mm
|
3-7/16" OD
87mm
|
Important Notes
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:
-
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.
-
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)
-
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.
-
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.
-
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.
-
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.
-
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.
-
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.
-
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.
-
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.
-
Turn On the Power: Restore power to the hot tub by switching on the circuit breaker or reconnecting the disconnect switch.
-
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.
-
Refill the Hot Tub: Once you've confirmed that the new pump is functioning properly, refill the hot tub with water.
-
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.
-
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:
-
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.
-
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.
-
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.
-
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.
-
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.




















