Maintenance
WARNING
Risk of injury during disassembly!
Secure the pressure-side shut-off valve against accidental
opening.
Wear protective gloves, components can become very
sharp-edged due to wear or damage.
Observe the manufacturer's specifications (e.g. for the
motor).
NOTE
Material damage due to incorrect dismounting/installation
of the pump!
Only specialist mechanics should complete dismounting/
installation work.
7.3.1
Preparations for dismounting
Pump is depressurized
Pump completely empty, flushed and decontaminated
Electrical connections disconnected and motor secured
against switch-on
Pump cooled down
Pressure gauge lines, pressure gauge and fixtures dis-
mounted
1. Dismantle the pipes on the suction and pressure side.
2. Remove pump from the system.
3. When dismounting, observe the following:
–
Mark the precise orientation and position of all compo-
nents before dismounting them.
–
Dismount components concentrically without canting.
7.3.2
Dismount the pump
Following the drawings for disassembly
NOTE
Material damage, fragile components!
Perform disassembly carefully, and do not strike or knock
the fragile ceramic parts of the plain bearing.
1. Remove the hexagon nuts and washers (12) from the
hexagon socket screws (2).
2. Remove the hexagon socket screws (2).
3. Remove the front pump housing from the rear pump hous-
ing (10).
4. Unscrew the flange (3).
5. Remove the O-ring (4).
6. Unscrew the filler cap with O-ring (5).
7. Unscrew the exhaust cap (1).
8. Remove the housing seal (6).
9. Remove the partition (7).
10. Remove the filter (9).
11. Remove the O-ring (8).
12. Remove the hexagon screws (18).
13. Remove the rear pump housing (10).
14. Unscrew the flange (11).
15. Remove the O-ring (12).
16. Remove the O-ring (15).
17. Pull the rear cover (16) with impeller (13) off the external
magnet (19).
18. Remove the impeller (13) from the rear cover (16).
19. Pull the bearing bush (14) off the fixed axle in the rear
cover (16).
20. Remove the seal from the pump support (17).
21. Remove the hexagon screws on the motor flange.
22. Remove the pump support (17).
23. Remove the fastening screw from the external magnet (19).
24. Pull the external magnet (19) off the motor shaft.
7.4
Replacement parts and return
1. Have the following information as shown on the name plate
ready to hand when ordering spare parts
–
Serial number
–
Type
2. Please complete and enclose the confirmation of decon-
tamination for returns
(
→
www.schmitt-pumpen.de/de/support/downloads.html
).
3. Use only spare parts from SCHMITT.
(E-Mail:
).
20
SMP
11335/0320