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2 cp40 casing removal – Viking Pump TSM285: Classic+ Lobe Pump User Manual

Page 17

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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