Rattle in MA-ND4 Acuator Damper

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Dragon
Posts: 2
Joined: Wed Aug 11, 2010 9:40 am

Rattle in MA-ND4 Acuator Damper

Post by Dragon » Wed Aug 11, 2010 9:55 am

Hello,
I have a MA-ND4 actuator and damper installed on my air handler. When the system calls for AC the damper functions (opens and closes) just fine.

The issue I have is that when the blower on the unit increases speed for the AC airflow the damper rattles. I am getting some kind of flutter in the blades and it is noisy enough to hear upstairs through the duct vents.

What can I do to the unit to eliminate this rattling?

Eric K.

Re: Rattle in MA-ND4 Acuator Damper

Post by Eric K. » Thu Aug 12, 2010 11:52 am

Does this occur if all zones are open or when it is the only zone calling?

Is there a by-pass damper installed on this system?

Eric

Dragon
Posts: 2
Joined: Wed Aug 11, 2010 9:40 am

Re: Rattle in MA-ND4 Acuator Damper

Post by Dragon » Thu Aug 12, 2010 12:14 pm

Yes, there is a bypass damper.

There are 2 zones supplied by 4 dampers. One zone is the 1st floor and the 2nd is the basement.

The problem occurs when only the primary upstairs zone is running. Off the top of my head I cannot verify 100% if the rattle is also occurring when the downstairs zone is calling. I will force it to run tonight with the downstairs on to confirm if the rattle also occurs under those conditions.

Eric K.

Re: Rattle in MA-ND4 Acuator Damper

Post by Eric K. » Mon Aug 16, 2010 1:34 pm

Please contact me at the number below.

Eric

hobscheidt@yahoo.com
Posts: 1
Joined: Sat Feb 03, 2018 4:32 am

Re: Rattle in MA-ND4 Acuator Damper

Post by hobscheidt@yahoo.com » Sat Feb 03, 2018 10:28 am

I also have rattling with my MA-ND5, loudest when all other zones are satisfied and the heat pump is on a lower fan speed. The noise is coming from the rivets in the damper. Any suggestions?

Ric
Site Admin
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Location: Englishtown, NJ
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Re: Rattle in MA-ND4 Acuator Damper

Post by Ric » Mon Feb 05, 2018 7:22 am

Hobscheidt,

Finding the cause of a rattle can be a difficult process. We can guide you through troubleshooting the problem. Please contact Paul in tech support by calling EWC Controls at 732-446-3110 ext. 490.

Squitich35
Posts: 1
Joined: Wed Feb 21, 2018 11:26 am

Re: Rattle in MA-ND4 Acuator Damper

Post by Squitich35 » Wed Feb 21, 2018 11:30 am

Ric wrote:
Mon Feb 05, 2018 7:22 am
Hobscheidt,

Finding the cause of a rattle can be a difficult process. We can guide you through troubleshooting the problem. Please contact Paul in tech support by calling EWC Controls at 732-446-3110 ext. 490.
lots of thanks Ric, i really appreciate this. if i would have some questions, can i ask you directly?

Ric
Site Admin
Posts: 18
Joined: Wed Mar 04, 2009 12:34 pm
Location: Englishtown, NJ
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Re: Rattle in MA-ND4 Acuator Damper

Post by Ric » Thu Feb 22, 2018 7:19 am

Squitich35,

Paul handles the direct trouble shooting. Please call him at 732-446-3110 ext. 490.

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