PUSH TYPE FITTING CONNECTIONS

The Hobart RO-150 utilizes quick disconnect push fittings for the majority of connections. Quick disconnect push fittings demand smooth, round, nick-free tubing and straight edges to form leak-free connections. Use either a PVC pipe cutter, razor blade tubing cutter or sharp razor knife to ensure straight, clean cuts. Leaks at connections are usually the result of deformed tubing. To correct a leak, release the water pressure, disconnect the tubing, cut 1/4" off the end of the tubing and reconnect.

Any tubing that is removed from the fitting frequently will eventually develop nicks or scratches that may lead to leaks. In such cases, periodically trim the tubing as described above.

NOTE: Always release the water pressure before attempting to disconnect the tubing from the fitting.

To connect tubing, push tubing squarely into the opening as far as it will go. To release the tubing, push in on the collette and pull out on the tubing.

WATER SUPPLY CONNECTION

TUBING / FITTING REQUIREMENTS

Due to the aggressive nature of high-purity RO product water, all tubing and fittings feeding the storage tank and equipment should be plastic. Although the Post Neutralizing Filter corrects pH and the aggressive tendencies of RO water, steps should be taken in avoiding the use of metallic connections and piping.

1.Ensure inlet water pressure is a minimum of 20 psi.

NOTE: Use the minimum amount of tubing to connect the water supply to the system to cut down on pressure drop.

NOTE: Inlet supply line should not exceed 20 feet in length. Do not use a self-piercing saddle valve to tap into the main feed water line.

NOTE: If using a brass compression fitting to connect the plastic tubing, discard the brass ferrule and use a plastic ferrule in its place. Use of a plastic insert (stiffener) will increase strength of connection.

2.Run 3/8" poly tubing from the water supply to the inlet connection tee on the left side of the RO filter system located under the system bracket and behind the sediment filter.

STORAGE TANK CONNECTION

NOTE: A 20 gallon storage tank pre-charged with air between 12-15 psi is supplied with the Hobart RO-

150.This allows for a total draw down of approximately 13 gallons RO water for on demand use. If a larger draw down is required, larger storage tanks are available upon request.

NOTE: A small air pump, such as that used for balls or a bicycle tire, will work to charge the storage tank.

1.Verify the air pressure pre-charge of the empty tank is within 12-15 psi.

A. Purge or add air as needed.

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