Duty Cycle of Coltri Icon LSE 100?

[happy-diver]

Do some more research on the PMV mate as whatever you've got is not it!

There's some of your many owner's first hand experience right there at you

But did you want first hand experience spanning hundreds if not thousands
of hours of runtime, from folks that actually understand what they're saying

 

[iain/hsm]

Coltri compressors are cheap for many reasons with each and every component fitted factored in the build at the cheapest possible price. The motor you quoted is also no exception. They are sold to recreational amateur divers with little of no experience and cater for the lowest common denominator and cost.

1. For the American market you should have been supplied with a NEMA motor code and plate and not an IEC code

2. Further this S= 3-75% is deceiving and IMHO not the same as the NEMA SF Service factor code

It is possible however being Italian that they have used the letters from the NEMA locked rotor code instead but the letter S would have been printed as locked rotor kVA per HP from the NEMA A to V with the lower down the alphabet code you go the the higher the inrush current.

Now being British I'm not a great fan of American motors or your panel wiring safety for that matter or your acceptance of starting with full voltage across the line starting drawing 300 to 500% loads higher than the motor current rating for the short time taken to achieve full rotor speed. While us lot fear and tremble at locked rotor amps by contrast to our timid soft start options. If the S printed on the data plate is indeed the NEMA locked rota code then an S would be around 16.00 to 17.99 kVA per HP T

On the same line the C1 and C2 headings denote its a single phase capacitor start capacitor run with the size of capacitors fitted

The bottom row shows IP 54 its the ingress protection akin near to your NEMA drip proof and lower than our minimum European industrial requirement for indoor use of IP 56

Sadly this motor is built to the cheapest of cheap standard its not even duel 50 / 60Hz or voltage 110 / 220 volt Its not NEMA t
rated and should be for the American market but worse of all its built on a European 90 metric IEC frame size and not to the required American imperial NEMA frame size and spacing

All is fine until it breaks after its short hard life and you left struggling trying to find a motor in the USA that fits the slots on the compressor motor mounting frame

 

[iain/hsm]

And if that's not enough here is a photo of a European minimum standard engineers designed compressor motor for indoor factory use I was working on today. Note the difference for the European Market (OK its a 3 phase) But:

1. It's EFF Effective 3 or IE3 that's 90.4% efficient.
2. Duty cycle is S1 That's 100% duty cycle 24/7 all day every day and at full load and pressure
3. Dual Voltage 400/690 volts in Delta and 460 volts in Star
3. Dual Hz 50 or 60 Hz wiring options included
4. PCT Thermistor protection fitted as standard
5. Ingress protection dust and fluid IP 56
6. Fitted with SKF shaft bearings (And not cheap junk from China or India)

This motor is by law in the UK is the minimum standard and would also require a soft start.
By contrast dive shops are a law unto themselves.

 

[iain/hsm]

By contrast if you go back to this Coltri motor for the American market on your MCH6 now rebranded and called the I-CON YOU have to asked yourself first what is it doing being sold to the American scuba diving market when it should be to a NEMA standard and class.
Send it back and get your money back or have it replaced.

And second if the data plate (marking in red) marked as S 3-75% and taking into account its Italian then I would suggest it should be interpreted as being to a S3 standard running at 75% efficiency.

And as S3 is only 75% efficient then you have to re interpret the data marking as S3. 75%.
A poor cheap motor to go with a poor cheap compressor block together with a poor inefficient filter system for a block running a very short stoke at very high RPM with poor little lubrication reserve.

Efficiency rating is power usage and is one thing duty cycle quite another.