Doser 2.1 Roller Grease/Dust

Dugless · Oct 9, 2019

My higher use rollers are starting to get a dark dusty greasy material on them. I removed the blue shroud and tried to clean them up. Can I remove the rollers too to get better access to cleaning them?

AZMSGT · Oct 9, 2019

Yes the rollers just slide out. To reinstall them it’s best to rotate the rollers so the one you are installing is not pinching line. Basically you want the install roller in the 6 o'clock position.

Dugless · Oct 9, 2019

How often should I be replacing these? Or at least cleaning them up?

AZMSGT · Oct 9, 2019

Dugless said:
How often should I be replacing these? Or at least cleaning them up?

I’m not sure. But perhaps these folks might know. I just started using a doser when I installed a KHD.
@Ditto @Support@GHLUSA @Vinny@GHLUSA @Matthias Gross

porter_painter · Oct 10, 2019

Clean every 3 months and replace every 12, but if you use the doser for high volumes then increase the frequency. (I don’t know what’s considered high volumes)

Dugless · Oct 10, 2019

Are you cleaning the metal pump spindle? I assume the black greasy material is transferring from there.

Vinny@GHLUSA · Oct 10, 2019

The maintenance routine for the caps and rollers all depend on how much the heads are used. The longer they run per cycle, the more often they should be cleaned. If the caps and rollers start to get excess buildup of dust and they are not cleaned, it will wear down the parts even sooner.

Cleaning can be done every 1-3 months or whenever dust begins to build up behind the cap.
The motor shaft can be wiped down just before reassembly.

Dugless · Oct 10, 2019

So, nothing is greased? My only curiosity was the debris had a tackiness to it.

Vinny@GHLUSA · Oct 10, 2019

If you'd like, you can put a thin layer of vaseline on the plastic shafts that hold the 3 rollers in-place.
Just make sure to NOT get any on the motor shaft.

AZMSGT · Oct 11, 2019

Vinny@GHLUSA said:
If you'd like, you can put a thin layer of vaseline on the plastic shafts that hold the 3 rollers in-place.
Just make sure to NOT get any on the motor shaft.

I wonder if Triflow Synthetic grease would be better on the plastics than petroleum jelly products like Vaseline. I found that Petroleum jelly would break down and cause problems with rubber materiel like the hoses inside the dosers. For the last 30 years I have used Triflow on plastic, rubber, neoprene and non-metalic gears and it lasts and works very well. I wouldn't trust any other grease or lube on plastics.
The items I used this stuff on are RC cars, helicopters, planes and drones. All the servos get this stuff in them. It's heavily used in the competitive RC world.