Coltri MCH-6 Stage Temperatures

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zider

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Quick question for the Coltri MCH-6 users in the group. What temperatures are typical for the 4 heads on this compressor? When warmed up to speed for about 5 minutes, I am seeing the approximate temperatures listed below for the stages:
  • 1st = 150F
  • 2nd = 210F
  • 3rd = 240F
  • 4th = 170F
Are these values typical? I'm still new to running this compressor and just want to make sure everything seems to be running as expected. If it helps, I'm using an electric motor and the compressor is running right at 2800 RPM (gauge tested). Thanks in advance for the help!!
 

Tony Pr

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Late reply I know.
  • 1st = 60C = 140F
  • 2nd = 90C = 194F
  • 3rd = 93C = 199F
  • 4th = 76C = 168F
After it was warmed up. My 4th stage needs replacement (takes 35 mins to fill a normal tank) so it is not pumping as fast as it should be. I received the replacement 4th stage in the post yesterday, but will wait for an oil change to install it.

Interesting that the worn 4th stage does not change the temperature of the 4th stage.

I have the same setup in terms of electric motor.
 
OP
zider

zider

Contributor
Messages
405
Reaction score
78
Location
Brownsburg, IN
# of dives
200 - 499
Late reply I know.
  • 1st = 60C = 140F
  • 2nd = 90C = 194F
  • 3rd = 93C = 199F
  • 4th = 76C = 168F
After it was warmed up. My 4th stage needs replacement (takes 35 mins to fill a normal tank) so it is not pumping as fast as it should be. I received the replacement 4th stage in the post yesterday, but will wait for an oil change to install it.

Interesting that the worn 4th stage does not change the temperature of the 4th stage.

I have the same setup in terms of electric motor.

Thanks for the reply. Good luck with installation of the 4th stage. The videos coltri has in their website should make it a straightforward job.
 
https://www.shearwater.com/products/swift/

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