Wilo T72 Instrucciones De Instalación Y Funcionamiento página 196

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4.1.3 Seal
Sealing chamber
Leakage chamber
4.1.4 Material
4.2 Monitoring devices
Internal monitoring devices
Motor compartment
Terminal room/motor compartment
Motor winding
Motor bearings
Sealing chamber
Leakage chamber
Vibration sensor
External monitoring devices
Sealing chamber
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Product description
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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• = standard-equipped , − = not available
The sealing chamber between the mechanical seals is filled with medical white oil. The
leakage chamber is empty.
The following materials are used in the standard version:
▪ Pump housing: EN-GJL-250 (ASTM A48 Class 35/40B)
▪ Impeller: EN-GJL-250 (ASTM A48 Class 35/40B)
▪ Motor housing: EN-GJL-250 (ASTM A48 Class 35/40B)
▪ Seal on the motor side:
– "H" = NBR (nitrile)
– "G" = carbon/ceramic or SiC/SiC
– "K" = SiC/SiC
▪ Seal on the fluid side: SiC/SiC
▪ Seal, static: NBR (nitrile)
The precise details of the materials are shown in the respective configuration.
Overview of monitoring devices
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o o
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o o
o o
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− −
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WILO SE 2019-01