How can I tell which port on the culligan manifold is the waste port, and which is the output port?

Depending on which type of plastic you have, it should say on it somewhere and it should look like a triangle and it will tell u pvc or nilon or abc. Then go get that type of glue and seal it with the correct glue. You could also use a food grade silicone, but remember to rough it up with some sand paper.

That's the drain for the reverse osmosis system. It should be tied into a waste line under the sink.
RJH2O

Here is a manual for a Culligan H-30. Basically the same unit. The diagram shows how to replace o-rings.
http://www.freshwatersystems.com/support/H-30.pdf

RJ

The reverse osmosis faucet you have incorporates an AIR GAP to prevent cross contamination to the RO system. The waste water first goes up the to RO faucet AIR GAP and then goes to drain. The "gurgling noise" is the waste water going to drain. Some of these are much noisier than others.
RJ

The feed water goes in the bottom and the product water comes out the top to faucet.
Here is a link to Culligan for the owners manual
http://www.culligan.com/en/service-and-maintenance/customer-support/owners-guide/obsolete-manuals/
RJ

Hi and welcome to FixYa I am Kelly.

Many times on Culligan water softener system installations there is a water bypass / on manifold from the house plumbing to the unit. If you have one it needs to be in the on position.

The soft clicking you hear can be 2 things

1. the timer doing its job actuating the contacts for the soleniods,

or

2. A solenoid being energized to open or close the purge, drain or brine tank solenoids.

If your unit has been idle for 2 years any number of things can be sticking or corroded

a. the brine tank tube opening is can be rock hard and clogged with old salt

b. the solenoid needles that actuate the opening and closing of valve diaphrams can be stuck in the metal casing they slide up and down in.

c. Not likely but the resin tank tube can be clogged

If you don't notice the soapy slick while in the shower / bath then it probably is not working.

A word of advice... if your not comfortable working on a closed sales / service / repair market product it can be costly if you attempt repairs and then call Culligan. I know they have the standard 30 min charge but in the long run they are in and out pretty quickly as that is all they do.

Thanks for using FixYa.

Kelly

the wasre filter is plugged up if not shutting off

If you disassemble the valve completely (all metal parts) the valve itself is delrin plastic and is recyclable along with the brine tank. You may be able to scrap the softener tank. You will have to get all the resin and gravel out of it. Just tip it over take the inlet manifold out and drain the resin into a bucket, take the resin to culligan for disposal.
RJ

call your culligan service department. they will tell you what to look for.