Viking Pump TSM285: Classic+ Lobe Pump - Manual (Page 27)

SECTION TSM 285 ISSUE A PAGE 27 OF 36
5.2.6 CP10 DOUbLE fLUSHED
MECHANICAL SEAL
REPLACEMENT
Refer to Figure 52
- Install O-rings (7.01) to stationary seal seats (7.04 and
7.12).
- Install stationary seal seats (7.04) to casing (3.01) ensuring
correct location of O-rings (7.01).
Note: The stationary seal seat (7.04) has
a location recess which fits over the anti-
rotation washer (7.13).
- Install O-rings (7.01) to stationary seal seats (7.11).
- Install stationary seal seats (7.11) to housing (7.06) ensuring
correct location of O-ring (7.01).
- Install housing (7.06) to shafts (5.01 and 5.02).
- Clean faces of outboard seal (7.11 and 7.12) use a soft tissue
and suitable solvent based cleaner for best results.
- Install rotary seal cartridges (7.11) with O-ring (7.02) to shafts
(5.01 and 5.02).
Note: For pumps installed with flange type casing (3.01)
connections, it may be easier to set the position of the
rotary seal cartridge (7.11) onto the shafts (5.01 and
5.02) using the setting distance, see figure 50, before
installing the casing (3.01). Screws in rotary seal cartridge
assemblies (7.11) must be tightened to the correct torque
refer to section 8.2.
- Install casing (3.01), O-rings (2.04), rotors (2.01), O-rings
(2.03), rotor retainers (2.02) and head (1.01) - refer to section
4.1.4.
- Secure housing (7.06) to casing (3.01) with screws (7.10)
ensuring correct location onto dowels (7.09).
- Rotate pump shafts by two or three full revolutions.
- If not already tightened, tighten screws (7.11) to correct
torque, refer to section 8.2.
Note: Access to screws (7.11) is through the flush pipe
connections of housing (7.06)
5.2.7 CP20, CP30 AND CP40
DOUbLE fLUSHED
MECHANICAL SEAL REMOVAL
- Remove head (1.01), rotor retainers’ (2.02), O-rings (2.03),
rotors (2.01), O-rings (2.04) and casing (3.01), refer to
sections 4.1.1 and 4.1.2 (CP20/CP30) or sections 4.2.1 and
4.2.2 (CP40).
- Loosen but do not remove screws in rotary seal cartridge
assemblies (7.11), which secure rotary seal cartridge
assemblies (7.11) to shafts (5.01 and 5.02).
Note: Access to screws (7.11) is through the flush
connections of housings (7.06).
- Remove rotary seal cartridge assemblies (7.11) with O-ring
(32) from shafts (5.01 and 5.02).
- Remove housings (7.06) from shafts (5.01 and 5.02)
complete with stationary seal seats (7.12), O-rings (7.01)
and O-rings (7.07).
- Remove stationary seal seats (7.04), O-rings (7.01) and O-
rings (7.07) from housings (7.06).
- Remove stationary seal seats (7.04) and O-rings (7.01) from
casing (3.01).
5.2.8 CP20, CP30 AND CP40
DOUbLE fLUSHED
MECHANICAL SEAL
REPLACEMENT
Refer to Figure 53.
- Install O-rings (7.01) to stationary seal seats (7.04).
- Install stationary seal seats (7.04) to casing (3.01) ensuring
correct location of O-rings (7.01).
Note: The stationary seal seats (7.04) have a
triangular shape which must locate fully into
the casing (3.01) bore.
- Install O-rings (7.01) to stationary seal seats (7.12).
- Install stationary seal seats (7.12) to housings (7.06) ensuring
both correct locations of O-ring (7.01) and stationary seal
seats (7.04) in housings (7.06).
Note: The stationary seal seats (7.12) have a
triangular shape which must locate fully into
the housing (7.06) bore.
- Install housings (7.06) to shafts (5.01 and 5.02).
- Clean faces of outboard seal (7.11 and 7.12) use a soft tissue
and a suitable solvent based cleaner for best results.
- Install rotary seal cartridge assemblies (7.11) to shafts (5.01
and 5.02).
Note: For pumps installed with flange type casing (3.01)
connections, it may be easier to set the position of the
rotary seal cartridge (7.11) onto the shafts (5.01 and
5.02) using the setting distance, see figure 50, before
installing the casing (3.01). Screws in rotary seal cartridge
assemblies (7.11) must be tightened to the correct torque
refer to section 8.2.
figure 53
Double flushed Mechanical Seal
WARNING
WARNING
WARNING