Viking Pump TSM211 User Manual

Electronic copies of the most current TSM issue can be found on the Viking Pump website at www.vikingpump.com

TECHNICAL SERVICE MANUAL

HEAVY-DUTY STAINLESS STEEL PUMPS

CONTENTS

Introduction . . . . . . . . . . . . . . . . . . . . . . . 1

Special Information . . . . . . . . . . . . . . . . . . . 1

Maintenance . . . . . . . . . . . . . . . . . . . . . . 2

Disassembly . . . . . . . . . . . . . . . . . . . . . . 4

Assembly . . . . . . . . . . . . . . . . . . . . . . . . 5

Pressure Relief Valve Instructions . . . . . . . . . . . 6

INTRODUCTION

The illustrations used in this manual are for identification
purposes only and cannot be used for ordering parts. Obtain a
parts list from the factory or a Viking® representative. Always
give complete name of part, part number and material with
model number and serial number of the pump when ordering
repair parts.

SERIES 724 AND 4724

SIZES F - G

FIGURE 1 - F, FH, G SIZE

SECTION TSM 211

PAGE 1 Of 8

ISSUE D

UNMOUNTED PUMP UNITS

PACKED MECH. SEAL

F724 F4724

FH724 FH4724

G724 G4724

This maintenance bulletin deals exclusively with the bracket
mounted, Heavy-Duty, Stainless Steel Pumps. This type
of pump may be equipped with either a Multi-Ring stuffing
box with packing, called a Series 724 pump; or a Roto-Ring
mechanical seal, called a Series 4724 pump. The figure
number and letter prefix, which indicates the basic pump size,
make up the pump model.Both the packed and mechanical
seal pumps are similar in overall appearance to the pump
illustrated in Figure 1.

The pump or unit model and serial number which can be
found on a nameplate attached to the pump or base, are
important means of identification when ordering repair parts
or a replacement pump.

An outstanding feature of these pumps is the integral thrust
bearing which is easily adjusted and holds the rotor in a fixed
position. This bearing is a double row angular contact ball
bearing securely locked against a shoulder on the shaft by a
locknut. Adjustment of the thrust bearing, to properly position
the rotor, will be explained at the end of this article.

Units are designated by the
unmounted pump model
numbers followed by a letter
indicating drive style.

D = Direct Drive
V = V-Belt Drive

SPECIAL INFORMATION

DANGER !

Before opening any Viking pump liquid
chamber (pumping chamber, reservoir,
relief valve adjusting cap fitting, etc.)
Be sure:

1. That any pressure in the chamber has
been completely vented through the
suction or discharge lines or other
appropriate openings or connections.

2. That the driving means (motor,
turbine, engine, etc.) has been “locked
out” or made non-operational so that
it cannot be started while work is
being done on pump.

3. That you know what liquid the
pump has been handling and the
precautions necessary to safely
handle the liquid. Obtain a material
safety data sheet (MSDS) for the
liquid to be sure these precautions
are understood.

Failure to follow above listed
precautionary measures may result in
serious injury or death.

VIKING PUMP, INC. • A Unit of IDEX Corporation • Cedar Falls, IA 50613 USA

SAFETY INFORMATION AND INSTRUCTIONS

IMPROPER INSTALLATION, OPERATION OR MAINTENANCE OF PUMP MAY CAUSE SERIOUS INJURY
OR DEATH AND/OR RESULT IN DAMAGE TO PUMP AND/OR OTHER EQUIPMENT. VIKING’S WARRANTY
DOES NOT COVER FAILURE DUE TO IMPROPER INSTALLATION, OPERATION OR MAINTENANCE.

THIS INFORMATION MUST BE FULLY READ BEFORE BEGINNING INSTALLATION, OPERATION OR
MAINTENANCE OF PUMP AND MUST BE KEPT WITH PUMP. PUMP MUST BE INSTALLED, OPERATED
AND MAINTAINED ONLY BY SUITABLY TRAINED AND QUALIFIED PERSONS.

THE FOLLOWING SAFETY INSTRUCTIONS MUST BE FOLLOWED AND ADHERED TO AT ALL TIMES.

Symbol
Legend :

!

!

!

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WARNING

!

WARNING

Danger - Failure to follow the indicated

instruction may result in serious injury

!

or death.

BEFORE opening any liquid chamber (pumping
chamber, reservoir, relief valve adjusting cap fitting,
etc.) be sure that :

● Any pressure in the chamber has been completely
vented through the suction or discharge lines or
other appropriate openings or connections.

● The pump drive system means (motor, turbine,
engine, etc.) has been “locked out” or otherwise
been made non-operational so that it cannot be
started while work is being done on the pump.

● You know what material the pump has been
handling, have obtained a material safety data
sheet (MSDS) for the material, and understand
and follow all precautions appropriate for the safe
handling of the material.

BEFORE operating the pump, be sure all drive guards
are in place.

DO NOT operate pump if the suction or discharge
piping is not connected.

DO NOT place fingers into the pumping chamber or
its connection ports or into any part of the drive train
if there is any possibility of the pump shafts being
rotated.

DO NOT exceed the pumps rated pressure, speed, and
temperature, or change the system/duty parameters
from those the pump was originally supplied, without
confirming its suitability for the new service.

BEFORE operating the pump, be sure that:

● It is clean and free from debris

● all valves in the suction and discharge pipelines

are fully opened.

● All piping connected to the pump is fully supported

and correctly aligned with the pump.

● Pump rotation is correct for the desired direction

of flow.

WARNING

WARNING

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WARNING

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!

WARNING

!

WARNING

Warning - In addition to possible serious

injury or death, failure to follow the
indicated instruction may cause damage
to pump and/or other equipment.

INSTALL pressure gauges/sensors next to the
pump suction and discharge connections to monitor
pressures.

USE extreme caution when lifting the pump. Suitable
lifting devices should be used when appropriate. Lifting
eyes installed on the pump must be used only to lift
the pump, not the pump with drive and/or base plate.
If the pump is mounted on a base plate, the base plate
must be used for all lifting purposes. If slings are used
for lifting, they must be safely and securely attached.
For weight of the pump alone (which does not include
the drive and/or base plate) refer to the Viking Pump
product catalog.

DO NOT attempt to dismantle a pressure relief valve
that has not had the spring pressure relieved or is
mounted on a pump that is operating.

AVOID contact with hot areas of the pump and/or
drive. Certain operating conditions, temperature
control devices (jackets, heat-tracing, etc.), improper
installation, improper operation, and improper
maintenance can all cause high temperatures on the
pump and/or drive.

THE PUMP must be provided with pressure protection.
This may be provided through a relief valve mounted
directly on the pump, an in-line pressure relief valve,
a torque limiting device, or a rupture disk. If pump
rotation may be reversed during operation, pressure
protection must be provided on both sides of pump.
Relief valve adjusting screw caps must always point
towards suction side of the pump. If pump rotation is
reversed, position of the relief valve must be changed.
Pressure relief valves cannot be used to control pump
flow or regulate discharge pressure. For additional
information, refer to Viking Pump’s Technical Service
Manual TSM 000 and Engineering Service Bulletin
ESB-31.

THE PUMP must be installed in a matter that allows
safe access for routine maintenance and for inspection
during operation to check for leakage and monitor
pump operation.

SECTION TSM 211 ISSUE D PAGE 2 OF 8

SPECIAL INFORMATION

ROTATION: Viking pumps operate equally well in a clockwise
or counterclockwise rotation. Shaft rotation determines which
port is suction and which is discharge. Port in area where
pumping elements (gear teeth) come out of mesh is suction
port.

PRESSURE RELIEF VALVES:

1. Viking pumps are positive displacement pumps and
must be provided with some sort of pressure protection.
This may be a relief valve mounted directly on the pump,
an inline pressure relief valve, a torque limiting device, a
rupture disk, or other device.

2. There are relief valve options available on those pump
models designed to accept a relief valve.

3. If pump rotation is reversed during operation, pressure
protection must be provided on both sides of pump.

4. Relief valve adjusting screw cap must always point
towards suction side of pump. If pump rotation is
reversed, remove pressure relief valve and turn end for
end. Refer to Figure 1, page 1 and Figures 2 and 3,

page 3.

5. Pressure relief valves should not be used to control

pump flow or regulate discharge pressure.

For additional information on pressure relief valves, Refer

to Technical Service Manual TSM000 and Engineering
Service Bulletin ESB-31.

MAINTENANCE

The small Stainless Steel series 724 and 4724 pumps are
designed for long, trouble-free service life under a wide variety
of application conditions with a minimum of maintenance,
however, the following should be considered.

1. LUBRICATION - Periodic external lubrication should
be applied slowly with a hand gun at all lubrication
fittings provided. A good quality of general purpose
grease is satisfactory in the majority of cases, however,
applications involving very high or low temperatures may
require other types of lubricants. Suggested frequency
of lubrication is once every 500 hours of operation. Do
not over-grease. Consult the factory if you have specific
lubrication questions.

2. PACKING ADJUSTMENT - New packed pumps, (Series

724) generally require some initial packing adjustment
to control leakage as packing “runs-in”. Make initial
packing adjustments carefully and do not over tighten
the packing gland. After initial adjustment, occasional
inspection will reveal the need for packing gland
adjustment and/or replacement of the packing. See
instructions in disassembly and reassembly regarding
repacking the pump.

3. END CLEARANCE ADJUSTMENT - After long

term operation it is sometimes possible to improve
the performance of the pump, without major repair,
through adjustment of end clearance of the pump.
Refer to instructions under End Clearance, page 6, for
information regarding this procedure.

4. RELIEF VALVE - If your pump is equipped with a relief
valve, adjustment can be made as follows. Remove the
adjusting screw cap, loosen the locknut and turn in the
adjusting screw to increase the pressure and turn-out
to decrease the pressure. If the pump is not producing
the rated capacity, adjustment of the relief valve may be
necessary.

5. CLEANING THE PUMP - It is good practice to keep the
pump as clean as possible. This will facilitate inspection,
adjustment and repair work and help prevent omission of
lubrication to fittings covered or hidden with dirt.

6. STORAGE - If the pump is to be stored or not used for
any appreciable length of time it should be drained and
a light coat of lubricating and preservative oil should be
applied to the internal parts. Lubricate all fittings. Rotate
by hand every 30 days.

SUGGESTED REPAIR TOOLS: The following tools must
be available to properly repair Series 724 and 4724 pumps.
These tools are in addition to standard mechanics’ tools such
as open end wrenches, pliers, screw drivers, etc. Most of the
items can be obtained from an industrial supply house.

1. Soft Headed hammer

2. Allen wrenches (some mechanical seals and set collars)

3. Packing hooks, flexible

Small for 0.25 inch and 0.31 inch cross section packing
Large for 0.38 inch and up cross section packing

4. Mechanical seal installation sleeve

5. Bearing locknut spanner wrench (2-810-043-375)

6. Spanner wrench, adjustable pin type for use on double

end caps (2-810-008-375)

7. Brass bar

8. Arbor press

SECTION TSM 211 ISSUE D PAGE 3 OF 8