1. Fill unit half way and add SE4210 water preservative (if desired) and then fill to water line with CLEAN POTABLE WATER. 
  2. Pressurise the tank to 690 KPa with clean air. Check for leaks.
    1. The unit has a Schroeder valve, same as a car tyre tube valve.
    2. The unit needs to be inflated to 690 kPa. A clean filter air compressor will work or there are some battery inflators on the market Milwaukee, etc. They take a bit longer but will eventually get it up to pressure.

Note: Anti Microbial Water Preservative is not essential, however it maintains water quality for up to 120 days. After 120 days the water needs to be completely replaced. If water preservative is not used, then the water must be fully replaced approximately every 2 weeks.

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