Removing/Installing The Motor Head Unit; Insulating The Pump In Refrigerating/Air-Conditioning Systems - Wilo Stratos 1.5x3-40 Instrucciones De Instalación Y Funcionamiento

7.1.1 Removing/installing the motor head unit

If the control module is to be moved into a different position, the motor does
not need to be completely removed from the pump housing. The motor can be
turned to the desired position in the pump housing.
CAUTION! Possible damage of the pump
Be careful not to damage the O-ring situated between the motor head and
the pump housing. The O-ring must lie untwisted in the bevel of the end
shield pointing to the impeller.
CAUTION! Possible damage of the pump
The impeller is permemtantly attached to the shaft, the end shield and the
rotor. As the rotor has extremely strong rare earth magnets, if the rotor is
removed from the rotor can, it has a considerable potential for danger e.g.
by suddenly attracting objects made from iron/steel, influencing electrical
equipment (risk to people with pacemakers), destroying magnetic cards,
etc.
To remove the motor, (4x) M6 or (4x) M10 hexagon socket screws must be
loosened. These screws can be reached with the following tools (fig. 3):
• 90° offset socket-head screwdriver
• spherical head socket-head screwdriver
• ¼" reversing ratchet with suitable bit

7.1.2 Insulating the pump in refrigerating/air-conditioning systems

The Wilo-Stratos series is suitable for use in refrigeration and air-conditioning
systems with flow medium temperatures down to 14°F (-10°C).
When using the pumps in refrigerating and air-conditioning systems, diffusion-
proof insulation is to be provided by the customer.
CAUTION! Possible damage of the pump
The pump housing may only be insulated up to the interstice with the motor,
so that the condensation vents remain free and any condensation produced
in the motor can run off without hindrance (fig. 4).
To protect it from corrosion, the pump housing is cataphoretically coated.
Installation and operating instructions Wilo-Stratos
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