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Idiomas disponibles
4.1.2
Motor
Leakage chamber for condensate (condensa-
tion water)*
Roller bearing: permanently lubricated
Roller bearing: regular re-greasing
4.1.3
Seal
Sealing chamber
Leakage chamber
Installation and operating instructions Wilo Motor T 12 ... 72 + EMU FA, Rexa SUPRA, Rexa SOLID
Product description
▪ Neck ring
The neck ring is installed in the suction port of the hydraulics and protects the incoming
flow edge in the centrifugal chamber.
The two components can be replaced easily when worn.
The system is driven by surface-cooled motors in three-phase current version. The motor is
cooled by the fluid around it. The waste heat is transferred directly to the fluid or the ambi-
ent air via the motor housing. The motor may emerge during operation. Operation is possible
in dry well installation depending on the motor power.
The motors are provided with different fittings depending on the motor size:
▪ Roller bearing: permanently lubricated and maintenance-free or regular re-greasing
▪ Condensate (condensation water) in motor: can be drained off
Overview of motor fittings
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* NOTICE! In the case of Ex approval motors, the condensation water cannot be drained
off from all motors. Depending on the motor, the drainage screw would be placed in a
spark-proof area!
The connection cable is longitudinally watertight and has bare cable ends.
Different methods are used for the seal to the fluid and the motor compartment:
▪ Version "H": rotary shaft seal on the motor side, mechanical seal on the fluid side
▪ Version "G": two separate mechanical seals
▪ Version "K": two mechanical seals in a block seal cartridge made of stainless steel
Leakage from the seal is caught in the sealing chamber or leakage chamber:
▪ The sealing chamber accommodates any possible leakage of the seal on the fluid side.
▪ The leakage chamber accommodates any possible leakage of the seal on the motor side.
In the case of motors without an additional leakage chamber, the leakage from the seal on
the motor side is taken up in the motor.
Overview of gasket and leakage chamber
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The sealing chamber between the mechanical seals is filled with medical white oil. The leak-
age chamber is empty.
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