KSB 4STQ Series User Manual

5 Installation/Dismantling
29 of 44
4STQ
2580.821/04-EN
5.4.6 Removing the C150/160M1-4STQ double cartridge seal
The rules of sound engineering practice and the pump manufacturer's general
provisions apply. Tidiness and cleanliness are essential for proper execution of the
installation work.
ü The operating manual for the pump is available.
ü The back pull-out unit of the pump has been removed from the pump casing and
safely positioned and secured in a vertical position.
ü The impeller and keys have been removed from the pump shaft.
1. Remove circlip932.53 from discharge cover163.
2. Screw 2 (M8) eyebolts into the front face of shaft sleeve 523.
3. Carefully pull the complete cartridge mechanical seal off the shaft by the
eyebolts. Then remove the eyebolts again.
4. Remove O-ring412.54 from discharge cover163.
5. Remove O-ring 412.06 from shaft sleeve 523. Keep with the mechanical seal.
6. Tighten the hexagon head bolts 901 (3 nos.) that make up the transport lock to
a low torque (hand-tight).
7. Clean the pump components in the area of the mechanical seal, pump shaft 210,
discharge cover 163 and bearing bracket 330. Check for any damage.
Further dismantling of the mechanical seal is carried out at KSB.
5.4.7 Removing the C190/190M1-4STQ double cartridge seal
The rules of sound engineering practice and the pump manufacturer's general
provisions apply. Tidiness and cleanliness are essential for proper execution of the
installation work.
ü The operating manual for the pump is on hand.
ü The back pull-out unit of the pump has been removed from the pump casing and
safely positioned and secured in a vertical position.
ü The impeller and keys have been removed from the pump shaft.
1. Remove hexagon socket head cap screws 914.52.
2. Screw 2 hexagon socket head cap screws (M8) into the front face of seal cover
471 and press the complete mechanical seal out of its seat.
3. Screw 2 eyebolts (M8) into the front face of seal cover 471.
4. Carefully pull the complete cartridge mechanical seal off the shaft by the
eyebolts. Then remove the hexagon socket head cap screws and eyebolts again.
5. Remove O-ring 412.06 from shaft sleeve 523. Keep with the mechanical seal.
6. As a transport lock fit and evenly fasten hexagon socket head cap screws 914.54
and assembly fixtures 96-3 (4 nos.).
7. Clean the pump components in the area of the mechanical seal, pump shaft 210,
discharge cover 163 and bearing bracket 330. Check for any damage.
Further dismantling of the mechanical seal is carried out at KSB.

KSB 4STQ Series Specifications

General

Brand	KSB
Model	4STQ Series
Category	Food Saver
Language	English