Question: ACPA4000 compressor cycling and noise dampening

[Anonymous user]

Hi.
I have a question regarding our NetworkAIR ACPA4000.We just installed this in our small server room. We just relied on fans before - i know not a good idea, so I have very little experience with cooling. The unit cools the room quite quickly so I think it has more than enough capacity. My question is the compressor seems to run for about 10 minutes then the compressor stops and the fan continues, but only for 1 minute then the compressor runs again for approx 10 minutes, then off for 1 min, and it continually cycles like this. Is this normal behavior for these units? As I mentioned I have nothing to compare this to. We have the set point at 63 degrees with the max dead band of 3 degrees. We tried various combinations of set point, dead band and low and high fan , which have not had any effect. The only reason this is an issue is the unit is quite loud ( we have both the supply and exhaust piped to our office plenum), and when the unit transitions from compressor on and off the noise is more annoying - if it ran continually i think the noise would become more of a constant background noise that a person could become accustomed too. So to summarize, is the compressor on for 10 min off for 1 min cycle normal or is there some configuration issue? Second is there some way to dampen the air flow noise without restricting the airflow?

Any advice would be appreciated.
thanks

[TheNotoriousKMP_apc]

Hi,

Sorry for the delay. I've sent an email to our cooling tech support team and hope to have something for you later today.

Update:

They asked that you call into them and speak to them regarding this:

888-695-6500

Thanks

Message was edited by: The Notorious K.M.P.

[Anonymous user · Accepted solution]

Hi
Thanks for the advice, i called and the tech explained that it is most likely that the cooler is not getting enough of a heat load on the intake, so the compressor shuts down. The room layout restricts us to much of what we can do, so I am going to have to be creative in directing the heat from the rack to the cooler. I pretty much have the placement of the cooler backwards to what I probably need. I was more concerned with the placement of the hoses for the condenser I did not give much thought to the air flow to and from the unit itself.

thanks again
Dave