A/C Chiller capacitors

Forty_Two

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Our 17 year old Marine Air chilled water system is superb, however i have had an occasional issue with the chiller taking two or three goes to run. Had been tripping out within a second of start up.

Yesterday i noticed the running current was 17Amps up from its usual 14A (excluding water pumps). Did a bit of googling & the most obvious candidate were the start/run capacitors.

Happily i carry spares so changed them this morning. Very easy, clip in holders & push on blade type connections.

Big difference, running now at 12A, FLA is 11.1A but at 60Hz so very happy with that & no problem starting.

Both caps show signs of expiry. Metal one is "domed" top & bottom compared to the new one & the other has 5mm window in the plastic case clearly showing showing a bulge compared to the old.

Just thought it might be useful info for someone else, cheaper then destroying the compressor?

Paul

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The harbour installing a motor rated trip helped me out enormously:D:D:D....... and Trevor (superheat6k) who is an expert to say the least!
 
Good advice. Here's what happened to a capacitor on our Condaria chilled water unit

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