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Desiccant Question

 
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rv10pro(at)gmail.com
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PostPosted: Wed Aug 03, 2016 6:31 am    Post subject: Desiccant Question Reply with quote
Put it in a cup in the oven and dry it out.  It will return to blue for reuse.

On Wed, Aug 3, 2016 at 5:46 AM, JON <jblake207(at)comcast.net (jblake207(at)comcast.net)> wrote:
Quote:
First, take a look at the attached pic... this is the condition of the desiccant removed from my air filter yesterday.  This was a little over a month on the calendar and about 10 hours of flight time.  I used to change it about every 25 hours, but changed to 10 hours given the humidity here in the deep south.   Here's the question... Would it help to leave out a couple of the felt filter pucks and use more desiccant?  IOW - is mo better?  Thoughts?  JB




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jblake207(at)comcast.net
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PostPosted: Wed Aug 03, 2016 6:52 am    Post subject: Desiccant Question Reply with quote
Thanks John. The question I really wanted answered, does the air filter really need all eight felt filter pucks? Or could I lose two or three and add more desiccant? JB

From: "John Cox" <rv10pro(at)gmail.com>
To: yak-list(at)matronics.com
Sent: Wednesday, August 3, 2016 9:30:55 AM
Subject: Re: Desiccant Question


Put it in a cup in the oven and dry it out. It will return to blue for reuse.

On Wed, Aug 3, 2016 at 5:46 AM, JON <jblake207(at)comcast.net (jblake207(at)comcast.net)> wrote:
Quote:
First, take a look at the attached pic... this is the condition of the desiccant removed from my air filter yesterday. This was a little over a month on the calendar and about 10 hours of flight time. I used to change it about every 25 hours, but changed to 10 hours given the humidity here in the deep south. Here's the question... Would it help to leave out a couple of the felt filter pucks and use more desiccant? IOW - is mo better? Thoughts? JB





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cjpilot710(at)aol.com
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PostPosted: Wed Aug 03, 2016 8:42 am    Post subject: Desiccant Question Reply with quote
That desiccant you have is reusable. Pop it into a microwave for two minutes or so, and it turns a deep purple, ready to be used again. And yes I only put one filter puck on each end of the drier along with the fine aluminum screens. The screens keep the desiccant from getting into the system. It really doesn't last a whole lot longer, it will hold more water.

Jim "Pappy" Goolsby


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dougsappllc(at)gmail.com
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PostPosted: Wed Aug 03, 2016 3:04 pm    Post subject: Desiccant Question Reply with quote
Jon,The blue to pink/red desiccant is no longer used as the moisture off it is corrosive.  Best to switch to the orange to gray green type which is not corrosive.
You will note that the assembly order is: (from the AIR IN END)
  1. ss end cap
  2. ss spring
  3. ss end plate
  4. ss screen
  5. felt pad
  6. ss screen
  7. Total contents of desiccant packet
  8. ss screen
  9. Next alternate pad, screen, pad, screen until all pads are used up
  10. ss screen
  11. ss end plate
  12. ss spring
  13. ss end cap
Note that this gives you 7 pads after the desiccant, I am assuming that this was designed to absorb the moisture if you were a bit late in changing your desiccant.  My personal opinion is that rather than to remove some felt pads you should consider moving you your time line for desiccant change.  Failure to maintain your pneumatic system (keep it clean and dry) will cost you dearly down the road.  I have found that telling this to many CJ drivers is much like trying to convince  a 16 year old that smoking may result in lung cancer. 

Best to all,
Doug
On Wed, Aug 3, 2016 at 5:46 AM, JON <jblake207(at)comcast.net (jblake207(at)comcast.net)> wrote:
Quote:
First, take a look at the attached pic... this is the condition of the desiccant removed from my air filter yesterday.  This was a little over a month on the calendar and about 10 hours of flight time.  I used to change it about every 25 hours, but changed to 10 hours given the humidity here in the deep south.   Here's the question... Would it help to leave out a couple of the felt filter pucks and use more desiccant?  IOW - is mo better?  Thoughts?  JB




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Lancer



Joined: 21 Apr 2016
Posts: 30
Location: Cairns, Australia
PostPosted: Thu Aug 04, 2016 3:14 pm    Post subject: Re: Desiccant Question Reply with quote
Hi Doug,

Good advise!!

I have a new new air drier in with my spare parts which has never been fitted. I can't find any hardware to mount it which is the most likely reason it is not sitting on the airplane. I live in the tropics and have already seen what moisture can do to the inside of my air system so am keen to fit it.

Do you have a fitting kit and mounting instructions for a CJ??

Thanks,

Lance

dougsappllc(at)gmail.com wrote:
Jon,The blue to pink/red desiccant is no longer used as the moisture off it is corrosive.  Best to switch to the orange to gray green type which is not corrosive.
You will note that the assembly order is: (from the AIR IN END)
  1. ss end cap
  2. ss spring
  3. ss end plate
  4. ss screen
  5. felt pad
  6. ss screen
  7. Total contents of desiccant packet
  8. ss screen
  9. Next alternate pad, screen, pad, screen until all pads are used up
  10. ss screen
  11. ss end plate
  12. ss spring
  13. ss end cap
Note that this gives you 7 pads after the desiccant, I am assuming that this was designed to absorb the moisture if you were a bit late in changing your desiccant.  My personal opinion is that rather than to remove some felt pads you should consider moving you your time line for desiccant change.  Failure to maintain your pneumatic system (keep it clean and dry) will cost you dearly down the road.  I have found that telling this to many CJ drivers is much like trying to convince  a 16 year old that smoking may result in lung cancer. 

Best to all,
Doug


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