Viking Pump TSM285: Classic+ Lobe Pump - Manual (Page 17)

SECTION TSM 285 ISSUE A PAGE 17 OF 36
- CP20 and CP30 Pumps Only.
Secure casing (3.01) in position with socket cap head screws
(4.04) using appropriate metric allen key (not supplied),
tightened to correct torque, refer to section 8.2. For additional
clamping whilst checking the clearances clamp the casing on
the opposite corners to the socket cap screws using washers
(not supplied) and nuts (1.03).
Note: The casing must be clamped in position
as above to enable front and rear rotor
clearances to be checked.
- Install rotors (2.01) to shafts (5.01 and 5.02) with retainers
(2.02).
- Using a depth micrometer or similar device measure front
clearance (refer to section 8.1 Clearance Chart) between the
casing and rotor front faces and check that this corresponds
to the appropriate clearance as indicated on the Clearance
Chart.
- To adjust front clearance, remove rotors (2.01) and casing
(3.01) and insert arch shims (4.05) between the casing (3.01)
and bearing housing (4.01).
Note: It is essential that the thickness of arch
shim (4.05) inserted is the same at both the
top and bottom of the casing (3.01).
- Install product seals; refer to section 5.0 or 6.0.
- Install guard (5.06).
- Install casing (3.01) securing in position with temporary
spacers (CP10) or socket cap head screws, washers and
nuts (CP20 and CP30) as before.
- Install rotors (2.01) with O-rings (2.03 and 2.04) and retainers
(2.02) tightened to correct torque, refer to section 8.2, using
socket tool (not shown).
- Check all rotor clearances i.e. front, rear, top/bottom, sides’
and mesh. (Refer to section 8.1 Clearance Chart.)
- CP10 Pump Only - Remove temporary spacers retaining
casing (3.01).
- CP10, CP20 and CP30 Pumps Only - Install head (1.01)
with O-ring (1.02) or gasket and secure with nuts (1.03)
tightened to correct torque, refer to section 8.2.
4.2 CP40 PUMPS - DISASSEMbLy
AND ASSEMbLy
4.2.1 CP40 HEAD AND
ROTOR REMOVAL
Follow recommended shutdown procedure -
refer to section 3.5.
- Refer to Figure 28.
- Gradually loosen head retaining dome nuts
(1.03). Care should be taken as there may still
be residual product and pressure in the pump
head and as the dome nuts are loosened, this
will vent to atmosphere.
- Remove dome nuts (1.03).
- Remove head (1.01), using lever slots as necessary.
- Remove head O-ring (1.02).
- Remove rotor retainers’ (2.02) with socket (not shown).
Note: The socket tool supplied (not shown) should always
be used to remove the retainer. The use of other tools may
damage the retainer.
- Remove retainer O-rings (2.03).
- Remove rotors (2.01) from shafts (5.01 and 5.02).
- Remove rotor O-rings (2.04).
4.2.2 CP40 CASING REMOVAL
Note: Ensure all pipe work is disconnected
before commencing casing removal.
4.2.2.1 CP40 CASING
REMOVAL fOR PUMPS
fITTED WITH SINGLE UN-
fLUSHED MECHANICAL
SEALS AND O-RING SEALS
(After completing 4.2.1)
- Remove dome nuts (4.08) fastening casing (3.01) to gearbox
(4.01).
Single Un-flushed Mechanical Seal for CP40 - see Figure 29 and
sections 5.2.1 for removal and section 5.2.2 for replacement.
- Slide casing (3.01) from gearbox (4.01) noting it is located on
dowels (4.03), keep arch shims (4.05) in appropriate sets if
they are to be reused.
Single O-ring Seal as shown in Figure 30 – see section 6.2.1
for removal and replacement.
- Remove O-ring seal (7.04) from casing (3.01).
figure 28
Head and Casing Removal for CP40
WARNING
WARNING
!
!
WARNING