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If you have one of the older Freshwater Ozonators, look below for cleaning instructions

Freshwater 2 Ozone Cleaning

A mineral build-up in the injector is usually indicated by a marked decrease in bubbles exiting from the heater return / floor drain. Go through the Hot Spring spa Quick-Reference Troubleshooting Guide for functional or mechanical problems with the spa or ozonator before performing this maintenance.

If after going through the Quick Reference Guide you suspect that there is a build-up in the injector, refer to the following instructions.

This is a non warrantable maintenance procedure. You, the spa owner, should perform the procedure. Dealer performance of this service will be billed at regular service rates.

1. Remove or open the equipment door.
2. Disconnect power to the spa.
3. Remove the white kynar tubing from the bottom of the ozonator. The white kynar tubing is installed in a right angle elbow with a locking nut. Simply loosen the locking nut and slowly remove the white kynar tubing. Do not remove the locking nut. Note: the check valve must remain connected to the white kynar tubing. Removing the check valve from the white kynar tubing will allow water to flow through the tube.
4. Put 16oz. of white vinegar in a cup or bucket. Place the cup or bucket on the equipment compartment floor.
5. Place the end of the white kynar tubing in the cup or bucket of vinegar. Be certain that the end of the tubing sits at the bottom of the cup or bucket of vinegar. Note: it may be necessary to elevate the cup of vinegar so it will reach the end of the white kynar tubing.
6. Reconnect power to the spa.
7. Run spa until all 16 oz of white vinegar are gone. This will be ample time for the vinegar to be run through the injector and clear the blockage. Check to see if ozone bubbles are coming through the floor drain.
8. Disconnect power to the spa.
9. Remove the now empty cup or bucket.
10. Reinstall the white kynar tubing to the elbow locking nut and retighten the locking nut.
11. Close the equipment compartment door.Secure the door closed with the door screws.
12. Reconnect power to the spa.

Instructions for Freshwater CD ozonators with visible flow meters. (Old style ozonators)

1. Disconnect power to the spa and the ozonator.
2. Remove the white kynar tubing from the red kynar tubing. Note: the check valve must remain in connected to the red silicone tubing to prevent water from flowing back out.
3. Put 16oz. of white vinegar in a cup or bucket. Place the cup or bucket on the equipment compartment floor.
4. Place the end of the red silicone tubing in the cup or bucket of vinegar. Be certain that the end of the silicone tubing sets at the bottom of the cup or bucket of vinegar. Note: it may be necessary to elevate the cup of vinegar so it will reach the end of the silicone tubing.
5. Close the equipment compartment door.
6. Reconnect power to the spa.
7. Let the spa circulate for approximately 15 seconds. This should be ample time for the vinegar to run through the injector and clean the blockage.
8. Disconnect power to the spa.
9. Open the equipment compartment door and remove the now empty vinegar container.
10. Reinstall the kynar tubing to the red silicone tubing.
11. Close the equipment compartment door and secure with screws.
12. Reconnect power to the spa and ozonator. Check for proper bubble flow.