KSB Filtra 18 D [24/36] Filtra n

7 Servicing/Maintenance

24 of 36

Filtra N

433

173

412.04

Fig.6: Re-installing the mechanical seal

ü All disassembled parts have been cleaned and checked for wear.

ü Any damaged or worn parts have been replaced by original spare parts.

ü The sealing surfaces have been cleaned.

1. Wet the rubber surfaces of mechanical seal 433 with soapy water to facilitate

the assembly.

2. Fit mechanical seal 433.

3. Fit diffuser wall 173.

4. Fit O-ring 412.04 in diffuser wall 173 and make sure it is pressed in properly.

7.4.2 Fitting the impeller

171

230

Fig.7: Fitting the impeller

ü The mechanical seal has been properly installed. (ðSection7.4.1,Page23)

1. Fit impeller 230 and make sure that the torque-transmitting elements of the

mechanical seal are engaged in the recesses of the impeller.

2. Fit diffuser 171.