Perma Pure Mini-GASS 2812T - Manual (Page 19)

19 Mini-GASS User Manual
6.2 Dryers
Under normal conditions, Perma Pure dryers require little maintenance and can last for several
years. However, if there is no pre-filter and the tubing becomes clogged or saturated with water,
the dryer may require cleaning or repair. When disassembling the dryer, note that the end
fittings on the PD-SERIES dryer can be easily rotated on the shell tube. This rotation should be
avoided to prevent twisting the membrane tubes inside the shell.
Refer to Appendix B for PD dryer element replacement.
6.3 Ammonia Scrubber
Media Replacement:
When deposits are visible on 75% of the scrubber, scrubbing media needs to be replaced.
1. Unscrew thumbscrew on bottom of housing.
2. Swing yoke to one side.
3. Separate housing and bottom cap as an assembly from top cap.
4. Remove spring and top screen.
5. Remove old media and dispose of properly (rinse housing with soapy water to clean).
6. Fill housing with 50cc of Berl Saddles (tap housing to allow material to settle).
7. Pour 150cc of Scrubbing Media (tap housing to allow material to settle).
8. Replace stainless steel screen on top of media.
9. Replace spring on top of screen.
10. Clean o-rings on shell and inside top manifold (replace if necessary).
11. Place center tube into o-ring seal in top cap.
12. Push and twist to seal housing around o-ring.
13. Replace yoke and finger tighten thumbscrew (do not overtighten).
6.4 Fuse
Fuse Replacement
1. Turn cap marked “FUSE” counter-clockwise ¼ turn and the fuse holder will come out.
2. Remove the blown fuse and replace with one of equal amperage rating. The standard
fuse is a BUSS type AGC or equivalent.
3. After installing correct replacement fuse, re-install fuse holder by pressing inward and
twisting ¼ turn clockwise.