Specifications
| Specifications | Value |
|---|---|
| Make | Caldera C30 |
| Year | 2006 |
| Serial Number | C303H3043 |
| Size | 7.5' x 7.5' |
| Height | 38" |
| Heater | 4 Kw |
| Volume | 475 Gal/1800L |
| Dry Weight | 920 lbs |
| Filled Weight | 5,915 lbs |
| Electrical | 230 V, 50A |
| Filter Capacity | 75 square feet |
Layout
Water Chemistry
Initial Water Fill
The following chemicals are added when the spa is refilled.
| Chemical | Amount |
|---|---|
| Cal Up | 480g |
| Ph Up | 34g |
| Chlor | 3 Tbs |
Compensation June 2022
| Chemical | Amount |
|---|---|
| Ph Up | 20g |
Parts
Parts Finder:
https://www.hottubspasupplies.com/amfinder/?find=caldera-c-30-2006-28343
https://www.hottuboutpost.com/search.php?search_query=caldera
Pump
Waterway Executive 48 2.0 HP pump | |
|---|---|
Description | 2.0HP Waterway Executive 48 Spa Pump, 2 Speed Waterway OEM part # 3420820-1A 2.0" intake and 2.0" discharge, (Measures 3" outside to outside) |
| Voltage | 220-240volt |
| High Speed Details | 10.5 Amps high speed (3450 RPM) 2.5KW |
| Low Speed Details | 2.8 Amps low speed (1725 RPM) 0.67KW |
Purchased Parts
| Part # | Description | Image | URL | Replaced |
|---|---|---|---|---|
| 73531 | Filter Outside Diameter: 7.0000"
|
| https://www.poolandhottubdepot.com/unicel-c-7375-hot-tub-filter-pcd75n-fc-3964/ http://www.calderaspapartsplus.com/caldera-spa-75-sq-ft-filter-2003-to-current-part-73531/ | 2013 - Filbur FC-3964 |
| 73920 | Caldera Spa Waterfall Valve Complete 2006 Plus |
| https://www.hottuboutpost.com/caldera-spa-waterfall-valve-complete-2006-plus/ | |
| 73850 | Magna Jet |
| ||
| 73481 | Jet Rotary Magnassage 01-08 |
| ||
| 72587 | Magna Jet Insert |
| ||
| 76193 | VersaSsage Jet VSR Replacement Jet |
| April 2012 | |
| 73852 | Minijet WG |
| ||
| 73909 | Euro Pulse Jet |
| ||
| 72594 | Caldera Spa Neckjet Pillow, 2002 to 2008 |
| https://.com/caldera-spa-neckjet-pillow-2002-to-2008-72594/ | 2012 |
72593 | Caldera Spas Lounge Pillow 2002 - 2008 |
| https://calderaspasparts.com/caldera-spas-lounge-pillow-2002-2008-72593/ | 2012 |
| 73994 | Original Heater Assembly |
| - | |
| 73995 | Original Pressure Switch |
| - | |
| 27-J0413-5S-K | Universal Heater Assembly, 4 kW 15" heater manifold (measured from stainless steel flange to flange). |
| https://www.hottubessentials.ca/universal-heater-assembly-4-kw-5.5-kw.html | 2017 - hottubessentials.ca |
| 3902 | Threaded pressure switch 1/8"NPT, SPST, 1 Amp rating. Two terminals accept either spade or forked connectors. (Actual outside diameter of threads is slightly larger than 3/8") Also known as Tecmark 3903, 3902, 36142, TEC3902, 52686, 6200-170C. |
| https://www.hottubessentials.ca/tecmark-3902-threaded-pressure-switch.html | 2017 - hottubessentials.ca |
| Cover | Elite Spa Cover - $364.00 Measurement A: 89 Measurement B: 89 Measurement C: 6 Color: Dark Grey Skirt-Length: 3.5" Double Wrap: Polysheet - 6 mil Pillow Type (Hinge Seal): Full Pillow Fold-Direction: Cut "A" in half for fold Upgrade: Deluxe foam 1.5lb 5 years warranty | https://www.buyfactorydirectspacovers.com/ | 2013 - buyfactorydirectspacovers | |
| Cover | Elite Spa Cover - Measurement A: 90 Measurement B: 90 Measurement C: 6 Color: Dark Grey Skirt-Length: 3.5" Double Wrap: Polysheet - 6 mil Pillow Type (Hinge Seal): Full Pillow Fold-Direction: Cut "A" in half for fold | https://www.buyfactorydirectspacovers.com/ | 2019 - buyfactorydirectspacovers $424.00 + TAX $479.12 |
Diverter Valve Assembly
Repairs
Structure Repair
Replaced rotten wood with pressure treated 2x4s. Also clad the hot tub in pressure treated plywood.
Siding Replacement
Diverter Valve Leak
Problem
I noticed that the hot tub temperature was low (80F) so I went to check on it. I then discovered that the water level was below half way. The pump was still trying to move the water around.
Checking the outside of the hot tub revealed the leak was on the same said as the main diverter valve. The main diverter valve had a small leak in the past but I let it go since it seemed to be leaking into the hot tub and only when on high. It seems that it found a way to make things more exciting for me.
Removing the side panel revealed the water but no noticeable leaks so I assumed it must be the leaking diverter valve.
An inspection of the electrical revealed that the fuses for the heater had blown.
Fix
Doing a valve replacement for this particular valve would be tricky since it multiple pieces all glued together. So, since it is winter, the fix will be to use a 2" (size 12) plug. And done!
Since the old fused jumper cables were kinda melted, I made new ones.
Done!
Revised Fix
So, after the winter, I noticed rust from the above plug so I decided a more permanent solution was required. I had purchased a 2" plug but it was a bit too big for the hole. I will need to resize it.
Using a heat gun, I applied heat to the perimeter of the plug for about 2 mins while rotating the plug. After that, I pushed the plug into the hole in order to get it to resize itself to the diameter of the hole. Once cooled, I removed the newly formed plug and applied primer and glue and secured in place.
No more leak. Done.
Wired Remote Removal
The stereo's wired remote had become an eyesore so it was removed. Covered with a 3d printed 65 mm cover and siliconed in place.
Pillow Fix
The pillow kept coming loose and floating around the hot tub. Decided to re-form it with a heat gun and some zip ties. Worked perfectly.
New Remote
Since I have a custom controller, I decided to add a control panel to the hot tub. The plate was created using a 3D printer and PLA light grey filament. It was then sanded smooth. The center switch controls the lights and the small switch to the left controls the pump. All other controls are set using HomeKit.
Knife Valve Leak Fix
Water was leaking from both of the knife valves.
Replace with new.
Stereo
| Part | Image | Description |
|---|---|---|
| Clarion CMD5 |
| Clarion CMD5 Marine CD/MP3/WMA Receiver with CeNET Control and Watertight Faceplate |
| Clarion CMRC2-BSS |
| CMRC2-BSS Ouside Diameter: 2-3/8-inches NOTE: This remote does NOT come with cable. You will need a M101RXC-RET extension cable
https://pdf.crutchfieldonline.com/ImageBank/v20080107224600/Manuals/020/020CMRC2.PDF |
| Rockville RGHR2 Marine Receiver |
| $173.00 NOTE: The wired remote did not do well in the hot tub. Rubber buttons disintegrated and it took on water. Stopped working within a year and removed in 2023. |
Local Caldera Dealer
Campbell Pools
1344 Youville Drive
Orleans ON K1C 2X8
(613) 834-6243
Suppliers
| Supplier | Location | URL | Purchased |
|---|---|---|---|
| The Spa Works | US | https://www.thespaworks.com/parts/caldera-spa-parts | Jets, Pillows |
| Pool and Hottub Depot | CA | https://www.poolandhottubdepot.com/ | O-Ring, Light/socket |
| Hot Tub Essentials | CA | https://www.hottubessentials.ca/ | Heater, Pressure Sensor |
| Hot tub Superstore | CA | https://www.thehottubsuperstore.com/ | - |
| Hot Tub Spa Supplies | US | https://www.hottubspasupplies.com | |
| Spa Parts Depot | US | https://www.spapartsdepot.com/caldera-spas/ | - |
| Pool and Hot tub Depot | US | https://www.poolandhottubdepot.com/ | - |
| Buy Factory Direct Spa Covers | CA | https://www.buyfactorydirectspacovers.com/ | Cover |
| Save Our Spa | Ottawa,CA | Hot Tub Move | |
| Campbell Pools | Ottawa,CA | Diverter Valve Parts |
Reference
| Reference | URL |
|---|---|
| Manual | https://calderaspas-2017.s3.amazonaws.com/Owners%20Manuals/2007%20C%20Series%20Owner%27s%20Manual.pdf |
| Water Balancing | https://www.aquachek.com/calculators/water-balance/ |
| Ottawa Fasteners for O-Rings | https://www.ottawafastenersupply.com/ |
| Spa Parts Depot | |
| Caldera Spa Parts | https://www.hottubspasupplies.com/hot-spring-watkins-parts/caldera-spa-parts.html |
| Parts for C30 2006 | https://calderaspasparts.com/caldera-spa-parts/caldera-spa-models/c-series/c30-c30/c30-c30-2006/ |
| myspapartsstore.com | https://www.myspapartsstore.com/manufacturer/caldera-spas |