Viking Pump TSM230: Hygienic Series User Manual

Page 9

SECTION TSM

230

ISSUE

PAGE 9 OF 15

28. Remove the two nuts securing the casing.
29. Coat idler pin with light food grade oil and place idler and

bushing on idler pin in head. If replacing the idler bushing,

refer to Installation of Bushings, page 15.

30. Install the head studs in the casing if they are not already

installed. Use a suitable food grade threadlocker when

installing the head studs in the casing. Place the head

O-ring on the casing. The head O-ring may need to be

stretched to fit onto the casing. Install the head and idler

assembly on pump. Use the head alignment dowel pins to

ensure proper reassembly. Make sure the idler pin, which

is offset in the pump head, is positioned equal distance

between port connections to allow for proper flow of liquid

through the pump.

Refer to idler pin placement shown

in Pump Rotation, page 13. If pump is equipped with a

jacketed head plate, install the jacketed head plate and a

new jacketed head plate O-ring.

31. Install the head nuts to secure the head to the casing.
32. After the pump is fully assembled with the mechanical

seal installed, verify the end clearance with a feeler gauge

and adjust if necessary before putting pump into service.

Only minor adjustments to the end clearance of less

than 0.005” can be made while the mechanical seal is

installed.

Refer to Thrust Bearing Adjustment, page 14.

If major (> 0.005”) adjustments to the end clearance are

necessary, remove the mechanical seal before adjusting

the end clearance. Seal removal instructions are listed in

the

Mechanical Seal section, page 10. Once the seal is

removed repeat the assembly procedures starting at step

8 to adjust the end clearance and reassemble the pump.

ASSEMBLY FOR O-RING SEALED PUMPS
1. On jacketed pumps, install jacket tubing onto the bracket

by squeezing the tubing between the slots of the bracket

flange. Make sure that the tubing does not extend past

the flange surface and interfere with installation of the

casing.

2. Use an arbor press to install the inner single row ball

bearing onto the shaft.

Refer to Disassembly and

Installation of Inner Ball Bearing, page 14. The inner

bearing in this pump is a “Sealed for Life” bearing that has

seals on both sides. This bearing can be installed either

side first and does not need to be packed with grease.

3. Coat the shaft with light food grade oil. Install the shaft

and bearing into the bracket from the pump end.

4. Install the outer ball bearing into the bearing housing.

The outer ball bearing is a “Sealed for Life” bearing that

has seals on both sides. This bearing can be installed

either side first and does not need to be packed with

grease. Do not install the end cap.

See Figure 7.

5. Start the thrust bearing assembly into the bracket. Use

a pin type spanner wrench to install the thrust bearing

assembly but do not over-tighten. The thrust bearing

assembly will be used later to set the end clearance of

the pump after the head of the pump has been installed.

6. Install the locknut on the shaft and hand tighten to keep

the shaft in place while the rotor is installed.

7. Install the anti-rotation washer in the bracket side of

the casing with the anti-rotation washer capscrew. The

chamfer side of the washer needs to be facing the

casing. For single seals, install pipe plugs in the seal

barrier/buffer fluid holes. These holes are only used for

double seals. Press the head alignment dowel pins into

the casing if they are not already installed.

8. Install the stationary member of the seal in the casing.

Refer to the additional seal installation instructions

in the Mechanical Seal section, page 10.

9. Install the casing studs in the bracket if they are not

already installed. Use a suitable food grade threadlocker

when installing the casing studs in the bracket.

Refer to

casing stud locations shown in Installation of Casing

Studs, page 14. Use the casing studs to install the casing

on the bracket. The port with a casing groove needs to be

used as the suction port for the pump’s primary rotation.

For clean in place pumps, one port must be oriented

downward to allow the pump to be self-draining.

10. Use two nuts to hold the casing in place during assembly.

These nuts should be located on opposite sides of the

casing. A spacer or a couple of larger nuts will need to

be used to compensate for the unthreaded section of the

casing studs. It is important the casing is secured during

assembly to avoid damage to the pump internals.

11. Install the rotary member of the seal on the back of

the rotor.

Refer to the additional seal installation

instructions in the Mechanical Seal section, page 10.

12. Install the rotor onto the shaft by lining up the splines

on both components. Take care not to damage the seal

O-rings and ensure that the rotary seal insert does not

slip out of position from the back of the rotor.

13. Coat threads of rotor retainer with food grade anti-seize.

Install the rotor retainer cap O-ring onto the rotor retainer

cap. Install the rotor retainer O-ring onto the rotor

retainer. Install rotor retainer through the rotor retainer

cap onto the rotor and shaft. Insert length of plastic bar

through port opening between rotor teeth to keep shaft

from turning. Torque the rotor retainer to value shown in

Table 1 using the retainer socket tool. It is critical that

the rotor retainer be torqued properly. Best practice is

to use a calibrated impact wrench or an impact wrench

with a properly sized torque stick. Remove plastic bar

from port opening.

See Figure 5.

14. Place the idler pin O-ring into the counterbore on the

head. Install the idler pin dowel pin into the idler pin. Align

the dowel pin with the hole or groove in the bore for the

idler pin, and install the idler pin into the head. Secure

the idler pin to the head using the idler pin capscrew.

15. Coat idler pin with light food grade oil and place idler

and bushing on idler pin in head. If replacing the idler

bushing,