Wilo HC 20.1 + EMU FA Serie Manual De Instrucciones página 187

Fig. 12: Changing the hydraulics housing
9.6.4 SOLID G- and Q impeller: Read-
justing the suction port
5
1 2
3 4
3
Fig. 13: SOLID G: Readjusting the gap
Installation and operating instructions Wilo Motor HC 20.1 + EMU FA, Rexa SUPRA, Rexa SOLID
Maintenance and repair
1 Hexagon nuts for fixation of the motor/hydraulics
2 Hydraulics housing
1
3 Threaded bolt
‡
Lifting equipment with sufficient bearing capacity is present.
‡
Protective equipment has been put on.
‡
New hydraulics housing is ready.
‡
Impeller must not be dismantled!
1. Attach lifting equipment with suitable lifting gear to the attachment point of the
pump.
2. Place the pump upright.
3
CAUTION! If the pump is placed down too quickly, the hydraulics housing at the
suction port can be damaged. Place the pump down slowly on the suction port!
2
NOTICE! If the pump cannot be placed level on the suction port, use appropriate
adjustment plates. In order for the motor to be lifted without any problem, the
pump must be vertical.
3. Mark the motor/hydraulics position on the housing.
4. Loosen and remove hexagon nuts on the hydraulics housing.
5. Slowly lift the motor and pull it off the threaded bolts.
CAUTION! Lift the motor vertically and do not tilt! The threaded bolts will be
damaged if tilted!
6. Swivel the motor over the new hydraulics housing.
7. Slowly drain the motor. Make sure that the motor/hydraulic markings match and
the threaded bolts screw exactly into the holes.
8. Screw hexagon nuts and connect the motor to the hydraulics firmly. NOTICE! Ob-
serve the tightening torques in the appendix!
▶ Hydraulics housing changed. Pump can be reinstalled.
WARNING! If the pump is placed in temporary storage and the lifting equipment dis-
mantled, secure the pump against falling over and slipping!
1 Hexagon nut for suction port attachment
2 Threaded bolt
3 Laminated core
4 Laminated core fastening screw
5 Gap between suction port and hydraulics housing
‡
Lifting equipment with sufficient bearing capacity is present.
‡
Protective equipment has been put on.
1. Attach lifting equipment with suitable lifting gear to the attachment point of the
pump.
2. Lift the pump so that the pump is approx. 50 cm (20 in) above the ground.
3. Loosen the hexagon nuts for fixation of the suction port. Unscrew the hexagon nut
until the hexagon nut is flush with the threaded bolt.
WARNING! Risk of crushing fingers! The suction port can stick on the hydraulics
housing due to encrustations and slide down suddenly. Loosen the nuts only in a
crosswise manner and grasp them from the bottom. Wear protective gloves!
4. Suction port is on the hexagon nuts. If the suction port sticks to the hydraulics
housing, carefully loosen the suction port with a wedge!
5. Clean the sliding surface and the screwed-on laminated cores and disinfect (if ne-
cessary).
6. Loosen the screws from the laminated cores and remove the individual laminated
cores.
7. Slowly re-tighten the three hexagon nuts crosswise until the suction port is in
contact with the impeller. CAUTION! Only tighten the hexagon nuts by hand! If
en
187