🔧 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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	Magic Plastics Union 0602-15 (1.5″ Pump Union) | 1-1/2″S x 1-1/2″FBT Union, Pump, Magic, 1-1/2"S x 1-1/2"FBT (Industry Standard) w/ O-Ring	$6.36 Max: 597 Min: 1 Step: 1 Add to cart
	Magic Plastics Union 0602-20 (2″ Pump Union) | 2″S x 2″FBT w/ O-Ring Union, Pump, Magic, 2"S x 2"FBT (Industry Standard) w/ O-Ring	$8.00 Max: 575 Min: 1 Step: 1 Add to cart
	Waterway Union 400-6010 | 2-1/2″ Union Nut with 2-1/2″ Slip tailpiece and o-ring (2.5″ union) Union, Pump, Waterway, 2-1/2"FBT x 2-1/2"S	$14.77 Max: 83 Min: 1 Step: 1 Add to cart
	1 Speed Pump / Blower / AMP Cord | 21086 Amp Plug, Pump, 1-Speed, 14/3, 4-Pin, 5' Cord, White	$24.71 Max: 356 Min: 1 Step: 1 Add to cart
	Balboa Amp Plug 21087 (For 2 Speed Pumps) Amp Plug, Pump 1 (2-Speed) 14/4, 72" Long, White	$31.72 Max: 153 Min: 1 Step: 1 Add to cart

Hot Tub Pump Collar & Union Size Chart

Imperial & Metric Specifications

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

The union "size" (1.5", 2", 2.5") is nominal and doesn't correspond to any actual measurement.

Collar size is measured from thread tip to thread tip on the pump outlet.

Most hot tub pumps use Female Buttress Thread (FBT) - 98% of applications.

O-ring gaskets may vary between manufacturers - measure your existing gasket for accuracy.

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.