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6 cp10 double flushed mechanical seal replacement – Viking Pump TSM285: Classic+ Lobe Pump User Manual

Page 27

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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