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Old 01-05-2011, 06:44 PM   #1
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Wiring Diagram Symbols for Timer Switch


I'm replacing a pool pump timer with a freeze guard on it. The circuit is 240 volts WITHOUT a neutral wire. I'm reasonably sure I understand most of the diagram and can wire everything, but my question is about a symbol -- a simple line and arrow that is joined with load 1 and 2. Does this mean "terminated" and if so what do I do to do that? Right now, the timer does not run although it can turn the pump on and off when manually changed...the timer motor is just not running.

I've attached a PDF.

Thanks in advance!

Wayne Crannell
Sherman TX
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Old 01-05-2011, 07:03 PM   #2
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Wiring Diagram Symbols for Timer Switch


No these are internal contacts switched by the timer, once time value is reached terminals 2&4 go hot.

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Old 01-05-2011, 07:23 PM   #3
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Wiring Diagram Symbols for Timer Switch


Is it a 120v or 240v timer ?
120v requires a neutral
Are you sure the timer motor works ?
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Old 01-05-2011, 08:15 PM   #4
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Wiring Diagram Symbols for Timer Switch


Quote:
Originally Posted by Scuba_Dave View Post
Is it a 120v or 240v timer ?
120v requires a neutral
Are you sure the timer motor works ?
According to the diagram that is a straight 240v time clock.

Jack is right. Those symbols are the two "switches" inside the time clock that make and break the circuit.

If the timer motor does not turn but the pump works and the clock can control it manually then the timer motor is shot. This is pretty common.
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Old 01-06-2011, 08:30 AM   #5
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Wiring Diagram Symbols for Timer Switch


Quote:
Originally Posted by Scuba_Dave View Post
Is it a 120v or 240v timer ?
120v requires a neutral
Are you sure the timer motor works ?
It's a 240v timer. There are two options for this from Intermatic...the most common setup is a timer/freeze guard setup for either 120v or 240v with a neutral wire. The one I have does not use a neutral third wire...just black and red. (Trying to get that less common timer/freeze guard is a moderately complicated story that is not interesting to anyone except someone who is wishing the pool was a garden at this point!)

The timer I have in there now (that does not turn) has separate terminals for the switch and the clock motor, so the problem is that I'm not getting power to the clock motor...obviously, I've wired it wrong. The timer I just ordered has only two terminals as indicated in the diagram...at least that's the plan.

(And can I say...great forum)

Thanks for the help...
Wayne Crannell
Sherman TX
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Old 04-10-2011, 06:10 PM   #6
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Wiring Diagram Symbols for Timer Switch


Great diagram. My system is 120v. Would love to find similar for 120v system.

Any help is appreciated...

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