Hot Tub Forum

Original => Hot Tub Forum => Topic started by: slovakia on June 26, 2019, 03:57:40 pm

Title: Standard temperature for pump electric motor. Please help.
Post by: slovakia on June 26, 2019, 03:57:40 pm

I was buy very old hot tube ( year of production is 1996  :) but it is made in USA  8) ) I make little maintenance and all running very well just water pump motor overheating.

Please what is standard temperature of running electric motor.

I check it by laser thermometer on flange (bearing place) 64C and 75C but on the body in the midle is 93C.

Please it is corect?

(https://i.imgur.com/5x7Lx6N.jpg?1)
(https://i.imgur.com/IVprKiY.jpg?1)
(https://i.imgur.com/FNJm8kT.jpg?1)

Title: Re: Standard temperature for pump electric motor. Please help.
Post by: Jacuzzi Jim on June 27, 2019, 08:45:53 am

 At 150f to 160 that us running pretty hot.  Does the internal switch shut it off, or does it keep running?

Title: Re: Standard temperature for pump electric motor. Please help.
Post by: Tman122 on June 27, 2019, 05:32:06 pm

If it is running hot (there are a ton of variables that determine what is to hot) it should throw a breaker before it burns up.......assuming it is on a proper GFCI

Title: Re: Standard temperature for pump electric motor. Please help.
Post by: slovakia on June 28, 2019, 12:28:24 am

Jacuzzi Jim: On the motor plate is information about thermally protection but never switch off it is overheat but running.

(https://i.imgur.com/99U8EuP.jpg?1)

Tman122: Yes i have GFCI (current protector) 30mA but never switch off.

Title: Re: Standard temperature for pump electric motor. Please help.
Post by: Jacuzzi Jim on June 28, 2019, 08:17:23 am

 Yeah like Tman said a lot of variables there as to why it's over heating.   It looks pretty old?  I'd say you have 2 options, run it as is till it dies. Which guessing won't be long.
 Or I would replace it.  No idea price wise where your at, but it would be your best bet.

Title: Re: Standard temperature for pump electric motor. Please help.
Post by: swilly1000 on June 28, 2019, 11:54:42 am

I read somewhere that the motor is designed to reveal when it's running hot by discoloring the casing (is that true?), which appears to be happening in your case.