1 1/2 hp Sta Rite well pump pressure switch

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LLigetfa

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Generally, they are threaded into a small hole in the tank Tee. The other small port is for a pressure gauge. Sometimes they connect directly to a small port on the pump but pulses there could cause the pump to short cycle.
 

RJB

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Am using without tank to water lawn from lake. Want to know pressure because motor overheats and shuts down about 60 seconds of water flow. Want to find the problem.
 

DonL

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Am using without tank to water lawn from lake. Want to know pressure because motor overheats and shuts down about 60 seconds of water flow. Want to find the problem.

Measuring the current that the motor is drawing may be of more help than a pressure gauge.

A 1.5 HP motor should be wired for 240 if possible.
And using some big wire, if the electrical run is very long and using 120.

120 may be safer tho...

You may want to double check your motor voltage setting.
And current ratings.
 

Texas Wellman

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Am using without tank to water lawn from lake. Want to know pressure because motor overheats and shuts down about 60 seconds of water flow. Want to find the problem.

Your pressure and your amps are inversely related. Pressure goes up, amps go down. What exactly will a pressure switch do for you? Probably cycle your pump to death.

Measuring the current that the motor is drawing may be of more help than a pressure gauge.

A 1.5 HP motor should be wired for 240 if possible.
And using some big wire, if the electrical run is very long and using 120.

120 may be safer tho...

You may want to double check your motor voltage setting.
And current ratings.

DonL,

Amps kill, not voltage. You ever been shocked by a spark plug? About 20,000 volts there.
 

RJB

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Am curious how much pressure pump is putting out. Have 30' 1 1/2 PVC from lake inlet and 3,4 spicket coming out. 30 ft of 12 guage wire coming from my shed to pump.
 

Masterpumpman

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Without a tank you don't want to use a pressure switch, just connect an on/off switch.
I suspect that 30' of 12 guage wire is to small for a 1-1/2 hp pump. Look up an electrical wire/motor chart (wire size/distance/motor hp). It sounds like the motor is overheating due to lack of proper voltage/current.
 
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RJB

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Without a tank you don't want to use a pressure switch, just connect an on/off switch.
I suspect that 30' of 12 guage wire is to small for a 1-1/2 hp pump. Look up an electrical wire/motor chart (wire size/distance/motor hp). It sounds like the motor is overheating due to lack of proper voltage/current.
have 40' from pole to shed and 50' from shed to pump. 12 gauge. I have a new 35/50 regulater but no pressure guage.

Sta Rite
Mod C48L2EC11
Ser 7E84 RPMS 3450
HP 1 1/2
Type C
A.D. Smith Corp Mebane

Where can I get a free schematic of motor?
 
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Valveman

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Pull the back cap off the end of the motor. Check the voltage setting, 115V or 230V. My bet is you have the motor set for 230V and you are only sending 115V.
 

RJB

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I'll try that but wouldn't the wire get hot to the touch if it were set wrong?
 

DonL

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I'll try that but wouldn't the wire get hot to the touch if it were set wrong?

There should be a wiring diagram on the inside of the motor cover.

True HP is 1 Horsepower for that motor;
AC induction motor, capacitor start, Typce C, Model C48L2EC11, rated 230/115V ac, 60Hz, 9.95/19.9A, 1 hp, 3450 rpm, 1-ph, SF 1.65, Frame Size 48Y, DP, Class B, 40C ambient, continuous duty, thermally protected, auto reset.


If the voltage is set wrong the wiring may not get hot but the internal overload would see a abnormal amount of current and trip the motors internal auto-reset breaker. Would run at half speed or less, or 2X speed until it burns up the start winding and / or start Capacitor.


That motor should have a Voltage changing switch under the rear motor cover.
 

RJB

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Have no electrical knowledge. I'm plugged into a regular house outlet.
 

LLigetfa

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You'll need to get an electrician to see if 230 volts is available in the shed and if so wire in a 230 volt circuit with a double pole disconnect so that you can run the pump on 230. Also verify that the pump is actually set to 230 volts.
 

LLigetfa

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have 40' from pole to shed and 50' from shed to pump. 12 gauge.
First you said it was 30 feet from shed to pump, now it's 50 feet plus another 40 feet from the pole for a total of 90 feet. Is that a single 12/2 feed from the pole to the shed as well? How much more wire between the service entrance and the pole or is the pole central metering? Is there 230 volts available at the pole?
 
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