Alfa Laval DuraCirc Range, Instruction Manual

Page: 47 / 69

5.5 Primary seals removal and fitting
1
Single mechanical seal
Mechanical seals are fragile. Take extreme
care when handling. Clean components
before fitting, checking there is no damage to
sealing faces. New elastomeric parts should
be fitted during assembly.
Item Description
101 Square Ring (Yellow ID mark)
102 Rotary Seal Face
103 Static Seal Face
104 Squad Ring (White ID mark)
105 Static Assembly
Seal Removal
NOTE
It is recommended to mark the positions of
the rotors and rotorcase (e.g. Top/Bottom or
Left/Right) prior to removal to ensure the
parts are refitted in the same positions.
3206-0042
105
101
102
104
103
2
1. Remove rotorcase cover (1) and rotors
(3).
2. Extract the rotary seal face (102) and
square ring (101) from the rotor.
• A small diameter tool can be passed
through the holes in the front of the
rotor to aid removal without damaging
the rotor or seal.
3. Remove the static seal face (103) and
squad ring (104) from the static assembly
(105) using a small screwdriver if
required.
4. Remove the static assembly from the
rotorcase (2) if replacement is required.
3206-0116
200002348-1-EN-GB 47
Maintenance 5 EN