Johnson Controls TopClean AS - Manual (Page 13)

11 IM-AS/02.00 GB (0412)
4. Isolate and depressurize flushing/quench system.
5. Close the inlet and discharge valves.
6. Drain and purge the pump casing and pipe work.
7. Clean the pump externally before disassembly.
11.4 Disassembly
11.4.1 Removal of pump casing and impeller – AS 40, 50, 60, 65 and 80
See sectional drawings AS40 page 18, AS 50 page 19
1. Remove the mechanical seal flushing pipes 71 on V and Q executions.
2. Remove the shroud (44) with screws (46) (if shroud is assembled).
3. Loosen screws (28) to remove the motor (50).
4. Gently pull the motor (50) away from the bearing housing (5).
5. Motor sizes up to IEC 112. If necessary remove the adjustable foot frame by
loosening the two nuts (30) and the screws (29).
6. Motor sizes larger than IEC 112. If necessary remove the adjustable foot
frame by loosening the screws (29) to remove the front foot (20), and the rear
foots (23).
7. Loosen and remove the casing clamp (9).
8. Remove the casing cover (2).
9. Unscrew the impeller nut (10) anti-clockwise and slide off the impeller (3).
10. Remove the impeller key (11).
11. Remove the clearance shims (19).
11.4.2 Removal of pump casing and impeller – AS 42 and AS 52
See sectional drawings AS 42 page 23 and AS 52 page 24
1. Remove the mechanical seal flushing pipes 71 on V and Q executions.
2. Remove the shroud (44) with screws (46) (if shroud is assembled).
3. Loosen the screws (28) to remove the motor (50).
4. Gently pull the motor (50) away from the bearing housing (5).
5. Motor sizes up to IEC 112. If necessary remove the adjustable foot frame by
loosening the two nuts (30) and the socket head screw (29).
6. Motor sizes larger than IEC 112. If necessary remove the adjustable foot
frame by loosening the socket head screw (29) to remove front foot (20), and
the rear foots (23).
7. Loosen and remove the rag bolt (38).
8. Remove the casing cover (2).
9. Remove the first impeller (3) as well as the impeller key (11).
10. Remove the inter-discharge casing (35) and the intersuction casing (34).
11. Remove the second impeller (3) as well as the impeller key (11).