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  1. #14
    Join Date
    Sep 2002
    Posts
    13,542

    Wy would that require a water valve adjustment?

    Doesn't the internal workings of the water valve automatically compensate for water pressure, water temperature, and flow rates? Isn't that the point of having the water valve in the first place?

    PHM
    ------




    Quote Originally Posted by VTP99 View Post
    Or water pressure / temperature has changed.
    PHM
    --------
    The conventional view serves to protect us from the painful job of thinking.

  2. #15
    Join Date
    Jan 2010
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    6,785
    Quote Originally Posted by Poodle Head Mikey View Post
    Doesn't the internal workings of the water valve automatically compensate for water pressure, water temperature, and flow rates? Isn't that the point of having the water valve in the first place?

    PHM
    ------
    Compensate for water pressure no. Water temperature no. Water flow YES.
    By adjusting the screw the control pressure of the valve increases or decreases.

  3. #16
    Join Date
    Jul 2011
    Posts
    10
    Have you verified that you're getting proper waterflow through the condenser? Also if you use standard 5 or 6 foot hoses you will throw the unit out of charge every time you gauge up on it.

  4. #17
    Join Date
    Apr 2006
    Posts
    329
    This all went down on Saturday. Now it's Tuesday. At least it must still me making ice because they would have called. Somebody suggested that maybe I messed up the charge. 404a's a blend right? I reclaimed the gas to make the original repair, but then used the customers virgin 404a to recharge but couldn't get it all in. Then when I went back to finsh, the virgin stuff wasn't available, so I used what I reclaimed. I charged liquid, but maybe something got screwed up a long the way.

  5. #18
    Join Date
    Sep 2002
    Posts
    13,542

    Let's talk about that -

    If the water pressure varies - wouldn't more water go through a certain opening of the water valve at a higher pressure - while with a lower water pressure - wouldn't less water would go through a certain opening of the water valve?

    And if more or less water went through the valve, wouldn't that affect the head pressure? Making the head pressure either increase or decrease? And isn't the varying head pressure what adjusts the water valve open and closed more and less?

    And also; say the incoming water temperature is very cold - wouldn't that lower the head pressure and so have the effect of throttling the water valve? And conversely; say the incoming water temperature was very warm - wouldn't that cause the head pressure to increase and so have the effect of opening the water valve more?

    So now can you please tell me how the water valve cannot compensate for varying water temperatures and pressure? <g>

    PHM
    ------





    Quote Originally Posted by VTP99 View Post
    Compensate for water pressure no. Water temperature no. Water flow YES.
    By adjusting the screw the control pressure of the valve increases or decreases.
    PHM
    --------
    The conventional view serves to protect us from the painful job of thinking.

  6. #19
    Join Date
    Jan 2010
    Posts
    6,785
    Quote Originally Posted by Poodle Head Mikey View Post
    If the water pressure varies - wouldn't more water go through a certain opening of the water valve at a higher pressure - while with a lower water pressure - wouldn't less water would go through a certain opening of the water valve?

    And if more or less water went through the valve, wouldn't that affect the head pressure? Making the head pressure either increase or decrease? And isn't the varying head pressure what adjusts the water valve open and closed more and less?

    And also; say the incoming water temperature is very cold - wouldn't that lower the head pressure and so have the effect of throttling the water valve? And conversely; say the incoming water temperature was very warm - wouldn't that cause the head pressure to increase and so have the effect of opening the water valve more?

    So now can you please tell me how the water valve cannot compensate for varying water temperatures and pressure? <g>

    PHM
    ------
    So Mikey are you saying that if the incoming water temp was 50*F the valve could rise that incoming water temp. to 70* ? Or if the incoming water pressure was 25psi. it could rise that incoming water pressure to 50psi. ? All the valve can do is increase or decrease flow not change the conditions of that incoming water flow. Now the condenser can change that incoming water condition. But not the valve.
    Last edited by VTP99; 03-13-2012 at 09:13 PM.

  7. #20
    Join Date
    Apr 2006
    Posts
    329
    Quote Originally Posted by VTP99 View Post
    So Mikey are you saying that if the incoming water temp was 50*F the valve could rise that incoming water temp. to 70* ? Or if the incoming water pressure was 25psi. it could rise that incoming water pressure to 50psi. ? All the valve can do is increase or decrease flow not change the conditions of that incoming water flow. Now the condenser can change that incoming water condition. But not the valve.

    I think you misread what he's saying. I think you guys agree. You guys are saying the same thing...you're both right. The valve senses pressure and opens and closes accordingly. Temp and pressure of the incoming water will just make it react faster or slower. I think I'm right, am I right? I don't even know anymore.

  8. #21
    Join Date
    Sep 2002
    Posts
    13,542

    No I'm not and didn't

    If the incoming water is cold, the head pressure will fall and the water valve will close to maintain the setpoint head pressure. If the incoming water is warm the operating head pressure will increase and that will open the water valve more to maintain the setpoint head pressure.

    Which is what I said: the water valve will compensate for varying water pressures, flow rates, and temperatures. As soon as any of them vary the head pressure the water valve will adjust to compensate for the changes in water pressure, flow rate, or temperature.

    It has to - the dumb bastard only senses one factor (head pressure) and can only open or close in response to it. <g>

    PHM
    ------



    Quote Originally Posted by VTP99 View Post
    So Mikey are you saying that if the incoming water temp was 50*F the valve could rise that incoming water temp. to 70* ? Or if the incoming water pressure was 25psi. it could rise that incoming water pressure to 50psi. ? All the valve can do is increase or decrease flow not change the conditions of that incoming water flow. Now the condenser can change that incoming water condition. But not the valve.
    PHM
    --------
    The conventional view serves to protect us from the painful job of thinking.

  9. #22
    Join Date
    Jan 2010
    Posts
    6,785
    Quote Originally Posted by Poodle Head Mikey View Post
    If the incoming water is cold, the head pressure will fall and the water valve will close to maintain the setpoint head pressure. If the incoming water is warm the operating head pressure will increase and that will open the water valve more to maintain the setpoint head pressure.

    Which is what I said: the water valve will compensate for varying water pressures , flow rates, and temperatures. As soon as any of them vary the head pressure the water valve will adjust to compensate for the changes in water pressure, flow rate, or temperature.

    It has to - the dumb bastard only senses one factor (head pressure) and can only open or close in response to it. <g>

    PHM
    ------
    Mikey,
    Yes the flow rate is what changes the condenser pressures & temperature. All the valve can do is change that flow rate. It is not fully automatic and has limits. If the water temperature was 20*F and the valve was almost closed it probably not make enough adjustment.

  10. #23
    Join Date
    Sep 2002
    Location
    Virginia
    Posts
    3,327
    If you claimed and re-used the gas, who knows what gas that might be .... the last person who touched the unit could have topped it off with anything he had on the truck. Head pressure jumping up like that makes me think so ...

    You might have to purchase a bottle of 404

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