AAF International DynaPure - Manual (Page 4)

4
6.0 Maintenance
6.1 General
WARNING: Before attempting any work on a DynaPure unit,
disconnect power and check to see that filter drum has stopped
rotating. Handle filter drum with care. Balance may be upset
if damaged.
Periodically, check hose, hose connection, and drain line for possible
leaks. Replacement of filters will depend upon type of material
collected and installation. It is suggested a planned maintenance
program be established to insure optimum performance.
6.2 Throwaway Liner Replacement - (Figure 4)
1. Turn off power and lock out.
2. Allow drum to stop rotating.
3. Unlatch and remove inlet cover.
4. Remove throwaway liner from drum.
5. Inspect the impeller and remove any buildup that is found on
the blades.
6. Replace new throwaway liner inside drum on top of primary filter.
Position liner so the seam is opposite the primary filter seam.
Allow ends to butt together, do not overlap. Smooth out wrinkles.
7. Replace inlet cover and secure latch.
6.3 Cleaning Procedure - Size A-1 (Figure 6)
1. Turn off power and lock out.
2. Remove bolts holding the motor mounting plate to the housing.
3. Lift out the motor and drum assembly.
4. Remove throwaway line from inside drum.
5. Inspect primary filter in drum. If filter is dirty, proceed with Step 6.
If clean, skip to Step 13.
6. Remove screws holding tapered bushing to hub on drum.
Reinstall screws in tapped holes in bushing and tighten evenly
until bushing is loose. Bushing, drum, key, and key retainer may
then be removed.
7. Immerse the drum assembly with the permanent filter intact in
kerosene or detergent. Agitate assembly till clean, being careful
not to damage drum.
CAUTION: Do not use aromatic hydrocarbon solvents or ketone
solvents. Do not use any toxic solvents since toxic vapors may be
discharged from residual solvent left in filter when unit is restarted.
8. If possible, spin dry.
9. Remove the hex head screws that mount the motor to the cover
which allows removal of the retainer screen and secondary filter.
Rinse secondary filter in solvent and wipe screen with a rag. Allow
secondary filter to dry.
10. Using a rag soaked with solvent, clean the inside and outside of
the casing and the outside of the motor.
11. Replace secondary filter and retainer screen. Remount the motor
to the cover.
12. Replace drum, tapered bushing, key, and key retainer on motor
shaft. Align end of bushing with end of motor shaft and tighten
screws evenly until drum is secured to motor shaft.
13. Place new throwaway liner inside drum on top of primary filter.
Position liner so the seam is 180º opposite the primary filter seam.
Allow ends to butt together, do not overlap. Smooth out wrinkles.
14. Replace motor and drum assembly in housing.
15. Fasten bolts securely to housing and motor mounting plate.
Mounting Button for Fastening Primary Filter to
Drum. One half of buttons to be installed straddling
filter seam with remaining buttons installed 180º
opposite filter seam for balance.
Primary Filter Joint Should
Line Up with Joint in Drum
Filter Liner Joint Should
be Located Directly
Opposite (180º) Primary
Filter Joint
Joint in
Drum
Assembly
Drum
Assembly
Throwaway Filter Liner
Primary Filter Media
Figure 4.