You may have a desiccant container on your coach in the
auxiliary air system if you have a slide or a Zip Dee air
Awning ? The bowl on the container is clear revealing the
color of its contents, which should be blue! If your
container of desiccant has turned pink, the desiccant has
done its job and collected moisture from your system and
needs to be serviced or maintained. The only servicing
required for silica gel units is when the desiccant color
changed from Blue (meaning dry) to pink (meaning wet).
Should this color change occur, you can do one of three
things to service your desiccant container.
1. You can take your coach into a Foretravel Service Center
or one of the recommended Foretravel Service
Centers for service.
2. You can purchase new desiccant from the parts department
at Nacogdoches (part #5Z613) and replace the pink desiccant
with new Blue desiccant yourself
3. Remove12 vdc power at breaker panel and 5amp fuse at
compressor. Loosen the clamp ring and remove the bowl from
the top housing (Fig. 1).
A. Desiccant replacement:
Pour out used desiccant.
Open new container and refill bowl (Fig. 2).
Pull down on the black tab on the metal outer casing and it will
unlatch and you will be able to remove it. Then SLOWLY twist the glass bowl
while pulling down and it will come off.
Shake or tap bowl to settle desiccant. Add or remove
sufficient quantity to fill bowl to within 1/2" of the top.
B. Desiccant regeneration:
For silica gel ("000") units (Foretravel uses
containing silica gel "000") pour out used pink
Desiccant onto flat pan. Place pink desiccant in a
350-degree(176C.) oven for approximately three
hours or until the desiccant color has changed back to Blue
OR put them in the microwave for 2-3 minutes on the
Remove desiccant from oven and allow to cool down to ambient
Clean out the bowl and pour desiccant back into unit bowl, periodically shaking and
tapping to settle the desiccant. and reinstall in the
Replace bowl and bowl guard and clamp ring onto the unit. Be
sure clamp ring is securely locked in
place before re-pressurizing the unit. It is important to
keep the desiccant in the container Blue so it can
remove the moisture from your air system. We hope this
article will make you aware of a
maintenance procedure, which is very important to your air
system, which you may not have been aware of.
You shouldn't need to bleed off the air if the compressor won't run.