Astralpool CMG Motor Cooling Fan Circlip 40209 - CX, TX and FX Pumps with a CMG Motor
Astralpool CMG Motor Cooling Fan Circlip 40209 - CX, TX and FX Pumps with a CMG Motor is temporarily out of stock and will ship as soon as it's available.
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Don't Guess - Ask Us!
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Delivery and Shipping Info
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Warranty Information
Warranty Information
Astralpool CMG Motor Cooling Fan Circlip 40209 - CX, TX and FX Pump...
Astralpool CMG Motor Cooling Fan Circlip 40209 - CX, TX and FX Pumps with a CMG Motor is temporarily out of stock and will ship as soon as it's available.
Astralpool CMG Motor Cooling Fan Circlip 40209 - CX, TX and FX Pumps with a CMG Motor
This is the genuine Astralpool Circlip for the CMG motor cooling fan, part number 40209. Fluidra describes it as the Circlip Suit CMG Motor, and its motor spare parts list as the Circlip for CMG Cooling Fan. It holds the CMG cooling fan 40183 on the motor shaft. The Notos fan 40285 takes a different clip, 40285C. One circlip per fan.
- Physically Stocked, unlike most "drop-shipping" websites.
- Shipped from VIC, NSW, WA, QLD
Confirmed Compatibility
Listed by motor: CMG motors, holding the CMG cooling fan 40183 (0.75 kW and 0.93 kW CMG motors).
Pumps named for the CMG fan 40183 on Fluidra's motor spare parts list:
- CX 180, CX 240, CX 280
- TX 0.75 and TX 1 HP
- FX 340 and FX 520 (see Ask First)
Not this clip: the Notos fan 40285 on the Viron pumps and the black Notos motors takes 40285C. Fluidra's lists show no separate clip for the beige Fasco fan 40256.
Ask first: the FX 340 and FX 520 (the current models have the black Notos motor, which takes the 40285 fan and clip 40285C), and the discontinued large CMG fan 40184. Send us a photo of the motor and the old clip.
Dimensions and Specifications
| Item | Detail |
|---|---|
| Part number | 40209 |
| Fluidra description | Circlip Suit CMG Motor |
| Fluidra motor spare parts list | Circlip for CMG Cooling Fan |
| Holds | CMG cooling fan 40183 on the motor shaft |
| Quantity per pump | 1 |
| Dimensions | Not published in Astralpool's parts lists. Compare with your old part, or send us a photo |
| Barcode (EAN / GTIN) | 9343609034436 |
The CMG Circlip Rule (rev. CMC-1.0)
Confirm this circlip by the motor and fan:
- CMG motor? Read the data plate. A CMG motor with the CMG cooling fan 40183 takes this circlip.
- Notos fan? Different clip. The Notos cooling fan 40285 on the Viron pumps and the black Notos motors takes 40285C.
- Check the old circlip. If it is missing, bent, stretched or was damaged getting the fan off, or the fan moves on the shaft, order a new 40209.
- Large CMG fan or anything else? Ask first. Send us a photo of the motor data plate, the fan and the old circlip.
Why the Circlip Matters
The circlip keeps the fan locked on the end of the shaft so it turns with the motor. Without it, or with a circlip that has lost its tension, the fan can work loose along the shaft and rub on the cowl, and a damaged fan moves far less air.
These pump motors are air cooled. The fan on the rear of the motor shaft draws air in through the cowl and pushes it along the motor body, and the cowl guides that air and keeps fingers and debris away from the spinning fan. Astralpool's Viron XT installation manual says the pump must have proper ventilation to prevent the motor overheating, that overheating due to lack of cooling voids the warranty, and lists poor airflow over the motor as a cause of the HI T over temperature fault. A single speed pump has no display to warn you that it is running hot.
The same manual says to check the surroundings for leaves and debris and, with the power off, to spray a surface insecticide around the control every three months, because ants and some insects are attracted to the warm, dry environment inside the enclosure.
Astralpool Motor Fan, Cowl and Clip Chart
| Motor | Cooling fan | Fan cowl | Fan clip |
|---|---|---|---|
| Viron variable speed, Notos brushless DC motor: Viron XT P320 and P520 (all series), eVo P320, eVo P600 | 40285 | 70600 | 40285C |
| Black Notos 750W, 1100W, 1500W: 71313, 71314, 71319, now SP71613, SP71614, SP71619 (CTX 280 to 500, BX 1.0 to 2.0, FX 250 to 520, XP 1.0 to 2.0) | 40285 | 40283 | 40285C |
| Notos 3 HP and Notos three-phase motors | 40275 | 40274 | None listed |
| Fasco beige 750W, 1100W, 1500W (older CTX; Astralpool's lists number the beige motors 71323, 71324, 71329) | 40256 | 40257 | None listed |
| Fasco 2400W 3 HP | 40263 (not stocked) | 40262 | None listed |
| Fasco brushless DC (BLDC) | 40269 | 40270 (not stocked) | None listed |
| 750W mini motor 71310 (CTX 180, FX 190, E-Series) | 40251 (Fluidra description, ask first) | Ask us | Ask us |
| Fasco beige 560W | 40251 | 40244 (not stocked) | None listed |
| Notos mini and Notos 560W | 40284 (not stocked) | Ask us | Ask us |
| CMG (Fluidra lists CX, FX and TX models) | 40183 small, 40184 large (discontinued) | Ask us | 40209, this part |
Part numbers and descriptions are from Astralpool's pump spare parts lists, Fluidra's electric motor spare parts list and part descriptions, and Astralpool dealer listings (40263 and the 40284 560W description). "None listed" means no separate clip appears on those lists. "Ask us" means the lists do not show the part; send us a photo of the motor data plate and the old part.
Which Part Do I Need?
| What you have | What to order |
|---|---|
| CMG fan intact, but the circlip is missing, bent or stretched | This circlip, 40209 |
| CMG fan blades broken or hub cracked | CMG Cooling Fan 40183 and this circlip |
| Notos fan 40285 clip missing (Viron, or black Notos motor) | Notos Fan Clip 40285C |
| Beige Fasco 750W, 1100W or 1500W motor | Fasco Cooling Fan 40256 |
Related CMG and Pump Motor Parts
- CMG Cooling Fan, Small - 40183
- Notos Fan Retaining Clip - 40285C
- Fasco Cooling Fan, 750W to 1500W - 40256
- Notos Cooling Fan, 750W to 1500W and Viron - 40285
- Browse the full range: Astralpool Viron Parts | Astralpool and Zodiac Pump Spare Parts
Part Numbers and Cross-References
- Astralpool part number: 40209
- Fluidra description: Circlip Suit CMG Motor
- Fluidra motor spare parts list: Circlip for CMG Cooling Fan
- Goes with: CMG cooling fan 40183 (Motor Fan 0.75 0.93kW CMG)
- Barcode (EAN / GTIN): 9343609034436
- Different clip: 40285C, circlip for the Notos cooling fan 40285
Fitting Notes
Isolate the pump at the power point or switchboard before removing the cowl. Astralpool's pump manuals say the pump must be installed and serviced by a licensed electrician in accordance with AS/NZS 3000.
- Remove the fan cowl from the rear of the motor.
- Remove the old circlip from the end of the shaft and note how it sits.
- Check the fan. If it is cracked, has broken blades or is loose on its bore, replace it with a new 40183.
- Fit the new circlip the same way the old one sat, check the fan is held firmly and turns only with the shaft, then refit the cowl.
When to Replace
Astralpool's maintenance schedules give no service interval for the circlip. Replace it when it is missing, bent, stretched or corroded, when the fan can move on the shaft, or when it was damaged getting the fan off.
Frequently Asked Questions
Which pumps does the 40209 circlip fit?
Pumps with a CMG motor and the CMG cooling fan 40183. Fluidra's motor spare parts list names the CX 180, 240 and 280, FX 340 and 520, and TX 0.75 and 1 HP for that fan. Check the motor first, because the CX pumps on Astralpool's 2017 list and the current FX pumps have other motors.
Does 40209 fit the Notos fan 40285?
No. The Notos fan on the Viron pumps and the black Notos motors takes 40285C.
Is the circlip included with the CMG fan 40183?
No. They are separate Astralpool part numbers.
Can I reuse the old circlip?
Only if it is undamaged and still holds the fan firmly, so the fan turns with the shaft and cannot move along it. Replace it if it is bent, stretched, corroded or was damaged coming off.
Is this a genuine Astralpool part?
Yes. Heater and Spa Parts is an authorised Fluidra (Astralpool and Zodiac) dealer and warranty agent, and 40209 is the genuine Astralpool part, barcode 9343609034436.
Can I fit it myself?
Isolate the pump from power first. Astralpool's pump manuals say the pump must be installed and serviced by a licensed electrician in accordance with AS/NZS 3000. As with all of our products, it must be diagnosed and fitted by a qualified and experienced person.
Manufacturer Catalogues, Diagrams & Part Numbers: Need exploded views, spare part numbers, product numbers, diagrams, or more product information? See the manufacturer catalogues below.
Important Before Ordering: Please ensure you order correctly. Confirm this product is suitable before ordering. Use the catalogues above, seek professional assistance, or contact us with photos of your existing part, model details, serial numbers, and any labels.
As with all products, these must be diagnosed and fitted by a qualified and experienced person. This is a special-order item.
Common search terms: Astralpool 40209, Hurlcon 40209, Astral CMG circlip, Circlip Suit CMG Motor, CMG fan circlip, CMG motor fan clip, Hurlcon CX fan circlip, TX pump fan circlip, older FX fan clip, WWDG SpaPro.
To the layperson, plumbing sizes and their names can be confusing due to the nominal sizes and naming conventions used.
This is not something we made up. Plumbers and manufacturers have used nominal (meaning ‘by name only’) sizing for decades.
Simply put, in plumbing, named sizes are often not the actual measurements of the pipe, fitting, or part. A PVC pipe called “50mm” or “2"” does not measure 50 mm anywhere. Instead, it follows nominal sizing, an internationally-standardised naming system.
Almost all fittings we use in the pool & spa industry use “pressure PVC” pipe & fittings. Do not confuse with “DWV” or other pipe & fittings and their names and sizes.
Use the Outside Diameter (OD) to check your pipe against fittings. Below is a quick reference for common spa & pool pipe sizes:
| Imperial Name | Metric Name | Pipe Diameter (OD) |
|---|---|---|
| 1/2" | 15mm | ~21.2–21.5 mm |
| 3/4" | 20mm | ~26.6–26.9 mm |
| 1" | 25 mm | ~33.4–33.7 mm |
| 1.5" | 40 mm | ~48.1–48.4 mm |
| 2" | 50 mm | ~60.2–60.8 mm |
| 2.5" | 65 mm | ~75.2–75.5 mm |
To reiterate, these are nominal sizes and are designed to fit matching fittings — not to measure what their name suggests. These are based on PVC Pressure Pipe AS/NZ 1477 Dimensions1.
- º Internal diameters vary slightly by manufacturer and class.
- 1 Not all pool/spa fittings match these dimensions exactly. Some do not follow Australian or international standards. Chinese spas may use proprietary fittings.
Understanding Plumbing Sizes & Nominal Measurements
Plumbing sizes can be confusing. PVC and many other pipe systems use nominal sizes—the size is a name, not the exact measured dimension. This convention is used across most pool and spa systems and other plumbing areas so that pipes and fittings remain compatible.
Why pipe sizes don’t match the measurements
The Nominal Pipe Size (NPS) system standardises pipe dimensions so that pipes, fittings, valves, and accessories interoperate.
Plumbers work with these nominal names every day, but DIYers can be tripped up if they try to match by a tape-measure alone.
How to Measure Pipe Correctly
-
Pipe size is identified by:
- The pipe’s Outside Diameter (OD).
- The fitting’s Inside Diameter (ID) (socket opening).
- Pipe Class / Schedule (e.g., Class 9, 12, 18 or Sch 40) relates to wall thickness and therefore the Internal Diameter (ID) and pressure rating.
- The outside diameter of a fitting is not useful (wall thickness varies by manufacturer).
Hose & Tube Dimensions
Common flexible hose sizes used in pool/spa systems (approximate IDs).
| Imperial Name | Metric Name | Inside Diameter (ID) |
|---|---|---|
| 3/8" | 9–10 mm | ~9 mm |
| 3/4" | 19 mm | ~19 mm |
BSP – British Standard Pipe Thread Sizes
BSP thread names are also nominal. The thread OD will not equal the nominal name.
| BSP Thread Size Naming | Outside Diameter (mm / inch) | TPI |
|---|---|---|
| 1/16" BSP | 7.7 mm / 0.304" | 28 |
| 1/8" BSP | 9.7 mm / 0.383" | 28 |
| 1/4" BSP | 13.16 mm / 0.518" | 19 |
| 3/8" BSP | 16.66 mm / 0.656" | 19 |
| 1/2" BSP / 15 mm | 20.99 mm / 0.825" | 14 |
| 5/8" BSP | 22.99 mm / 0.902" | 14 |
| 3/4" BSP / 20 mm | 26.44 mm / 1.041" | 14 |
| 7/8" BSP | 30.20 mm / 1.189" | 14 |
| 1" BSP / 25 mm | 33.25 mm / 1.309" | 11 |
| 1-1/4" BSP | 41.91 mm / 1.650" | 11 |
| 1-1/2" BSP / 40 mm | 47.80 mm / 1.882" | 11 |
| 2" BSP / 50 mm | 59.61 mm / 2.347" | 11 |
| 2-1/4" BSP | 65.71 mm / 2.587" | 11 |
| 2-1/2" BSP | 75.18 mm / 2.960" | 11 |
| 3" BSP | 87.88 mm / 3.460" | 11 |
| 4" BSP | 113.03 mm / 4.450" | 11 |
| 5" BSP | 138.43 mm / 5.450" | 11 |
| 6" BSP | 163.83 mm / 6.450" | 11 |
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