Viking Pump TSM285: Classic+ Lobe Pump - Manual (Page 29)

SECTION TSM 285 ISSUE A PAGE 29 OF 36
5.3.5 CP50 DOUbLE fLUSHED
MECHANICAL SEAL REMOVAL
- Remove head (1.01), rotor caps (2.02), O-rings (2.03),
retainers (2.05), rotors (2.01), Orings (2.04) and casing
(3.01), refer to sections 4.3.1 and 4.3.2.
- Remove rotary seal cartridge assemblies (7.11) with O-rings
(7.01) and (7.16) from shafts (5.01 and 5.02) by simply sliding
off. Do not loosen screws in rotary seal cartridge assemblies
(7.11).
- Remove housings (7.06) from shafts (5.01 and 5.02)
complete with stationary seal seats (7.04), O-rings (7.02)
and O-rings (7.07).
- Remove stationary seal seats (7.04), and O-rings (7.07) from
housings (7.06).
- Remove stationary seal seats (7.04) and O-rings (7.02) from
casing (3.01).
5.3.6 CP50 DOUbLE fLUSHED
MECHANICAL SEAL
REPLACEMENT
Refer to Figure 56.
- Install O-rings (7.02) to stationary seal seats (7.04).
- Install stationary seal seats (7.04) to casing (3.01) ensuring
correct location of O-rings (7.02).
Note: The stationary seal seat (7.04) has a
triangular shape, which must locate fully into
the casing (3.01), bore.
- Install O-rings (7.02) to stationary seal seat (7.04).
- Install stationary seal seats (7.04) to housings (7.06) ensuring
correct locations of O-rings (7.02) and stationary seal seats
(7.04) in housings (7.06).
Note: The stationary seal seat (7.04) has 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 7.04) use a soft tissue
and a suitable solvent based cleaner for best results.
- Install rotary seal cartridge assemblies (7.11) with O-ring (7.01)
and (7.16) to shafts (5.01 and 5.02) ensuring engagement
of drive slots with pins (5.23) in shafts (5.01 and 5.02).
- Install casing (3.01), O-rings (2.04), rotors (2.01), retainers
(2.05), O-rings (2.03), rotor caps (2.02) and head (1.01),
refer to section 4.3.5.
- Secure housings (7.06) to casing (3.01) with nuts (7.18).
6.0 CLASSIC+ SINGLE O-RING
SEALS
6.1 GENERAL PROCEDURES
fOR fITTING SINGLE O-RING
SEALS
“Quick Summary” of O-Ring seal installation.
- O-ring seals are a simple but effective means of shaft sealing.
They will provide optimum performance only if installed
carefully in accordance to the following instructions below
and sections 6.2 and 6.3.
- Remove any sharp corners and burrs that could damage
O-rings.
- Always inspect for wear, the diameter on the rotor where the
O-ring seal is located.
- Be sure that all seal component fitting bores, housings,
followers, sleeves etc. are thoroughly cleaned before
installation.
- All O-rings should be lightly lubricated with an appropriate
lubricant (suitable for application) before installation.
Note: Do not run an O-ring seal dry.
6.2 O-RING SEALS fOR CP10,
CP20, CP30 AND CP40 PUMPS
6.2.1 CP10, CP20, CP30 AND CP40
O-RING SEAL ASSEMbLy
AND REMOVAL
- Before assembly or disassembly of the seals,
ensure pump is fully shutdown, refer to section
3.5.
- Install O-ring (7.04) into the casing (3.01).
- Install O-ring (2.04) onto shaft (5.01 and 5.02).
Note: During installing of the rotors to shafts care must
be taken not to damage or unseat the O-ring seal when
inserting the rotor (2.01) into O-ring (7.04).
- To disassemble reverse the above procedure.
figure 56
Double flushed mechanical seal CP50
figure 57
O-Ring Seal for a CP10, CP20, CP30 and CP40
WARNING
!
WARNING
WARNING