EASY-SCALE™  Installation Instructions

for Lay Z Spa Airjet

Included with your EASY-SCALE™  kit are 2 screw-on caps, 2 o-rings to assist sealing and to ensure the washers inside the couplings aren’t damaged and a sachet of Oust (or similar) descaling solution.
(Oust not supplied with non-UK orders due to shipping restrictions).

Always rinse your EASY-SCALE™ thoroughly with clean fresh water before and after use.

Descaling should always be done on a well drained surface such as a lawn to ensure no staining occurs.

We recommend OUST descaling solution.  Always use a suitable descaling solution or tablets and follow the manufacturer’s safety instructions.

1. Switch off pump. Unscrew filter housing from inside the tub. Push the two black stopper caps on the inlet and outlet on the inside of the tub.

2. Remove pump from the tub; unscrew two small pipes and one large (air) pipe between the pump and the tub.  It’s normal to lose about a cupful of water from the air pipe. ** It is advisable to have the cap for the air pipe handy just in case you lose more water**  Check condition of B&C (coupling) washers and replace if necessary.

3. Attach your EASY-SCALE™ to the pump; insert the two o-rings provided into the couplings.  Smear a little silicone grease or Vaseline onto the threads of the EASY-SCALE™. This will make it easier to remove. Screw the 2 small pipes from the pump on to the EASY-SCALE™. Screw on hand tight only. DO NOT OVERTIGHTEN OR THIS WILL DAMAGE THE THREADS ON THE PUMP AND / OR EASY-SCALE™.

4. Make sure the caps are tightened, again, hand tight only.  Fill to about 2 inches below the top, with approximately 1.2 litres of cold water, Tilt the pump back to fill the pump with water, then top up the EASY-SCALE. Switch on pump and test for leaks. Tighten fittings, caps if necessary then add descaler solution (Oust or similar).

5. Run pump for a minimum of 30 minutes on heat (30°C) longer if you want. It is usual for the solution to go very milky, the milkier the solution, the more limescale you are removing. *** Do not allow the pump (water) temperature to exceed 40°C *** If you do, you’ll encounter an E03 and / or E08 (high temp) error.  If this occurs, reset the RCD, switch back on, carry out a thermal reset on the pump (push the button in the middle of the pump) and reduce the temperature accordingly.

6. Remove the lower cap to drain or tip the solution out with the EASY-SCALE™ attached to the pump into a suitable container or jug. Refill to the top with clean fresh water and repeat steps 4 and 5 for a minimum of 5 minutes.

7. Drain and remove the EASY-SCALE™ and o-rings from the couplings. Pop the o-rings in the EASY-SCALE™ ready for next time. Refit pump to hot tub.

8. Remove black stopper caps from inside of tub. Replace filter housing. Switch on pump and enjoy once again!