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48 WILO SE 05/2011
• During installation/deinstallation of the motor head, the rotor unit can fall
out and injure personnel. Do not hold the motor head with the impeller facing
downward.
The motor does not have to be completely removed from the pump housing if
only the terminal box is to be repositioned. The motor can be rotated to the
desired position whilst still attached to the pump housing (see Fig. 2 for the per-
missible installation positions).
CAUTION! Risk of damage!
If for maintenance or repair work the motor head is detached from the pump
housing, the O-ring located between the motor head and pump housing must
be replaced with a new one. When installing the motor head, check that the
O-ring is correctly seated.
• The release the motor, undo 4 socket-head screws. Tools that may be required:
• Angled hexagonal recess screwdriver
• Ball-head hexagonal recess screwdriver
• ¼-inch ratchet wrench with appropriate bit
CAUTION! Risk of damage!
Do not damage the O-ring located between the motor head and the pump
housing. The O-ring must lie in the angled end shield that faces towards the
impeller, and must not be twisted.
• After the installation tighten the 4 socket-head screws again, working across
diagonals.
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