Viking Pump TSM635.3 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

UNIVERSAL MAG DRIVE PUMPS

SERIES 8124A, 8123A, 8127A

CONTENTS

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

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

Safety Information. . . . . . . . . . . . . . . . . . . . .2

Maintenance . . . . . . . . . . . . . . . . . . . . . . . 3

Model Number System . . . . . . . . . . . . . . . . . . 4

Parts Identification Drawings . . . . . . . . . . . . . . . 5

Disassembly of Pump. . . . . . . . . . . . . . . . . . .5

Disassembly / Assembly of Bearing Housing . . . . . . .7

Installation of Bushings . . . . . . . . . . . . . . . . . . 7

Assembly of Pump . . . . . . . . . . . . . . . . . . . . 8

Pump Rotation . . . . . . . . . . . . . . . . . . . . . 10

Adjusting End Clearance . . . . . . . . . . . . . . . . 10

Pressure Relief Valve Instructions . . . . . . . . . . . 11

Troubleshooting. . . . . . . . . . . . . . . . . . . . . 12

Warranty . . . . . . . . . . . . . . . . . . . . . . . . 13

SECTION TSM 635.3

PAGE 1 Of 13

ISSUE C

SIZES Q AND QS

FIGURE 1

MODEL Q8124A-425

WARNING!

Persons with surgical implants of a metallic
or electronic nature should avoid working on
pump – especially the magnet assembly.

This information must be read fully before
beginning any maintenance or repair of the
pump. All maintenance or repair must be
done by SUITABLY TRAINED or qualified
persons only.

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 the complete name of a part, the part number
and material, along with the model number and serial number
of the pump when ordering repair parts. The unmounted
pump or pump unit model number and serial number can be
found on the nameplate secured to the pump.

This manual refers only with Series 8124A, 8123A and 8127A
universal magnetic drive pumps. Refer to Figures 1 through
19 for general configuration and nomenclature used in this
manual. Pump specifications and recommendations are
listed in Catalog Section 635.

In the Viking model number system, the basic size letters
(Q and QS) are combined with the series number (8124A,
8123A, 8127A) indicating basic pump external construction
material, see Figure 4.

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 USAVIKING 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 :

!

!

!

!

!

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

!

WARNING

!

!

!

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 635.3 ISSUE C PAGE 2 OF 13

ROTATION: Viking Mag Drive® pumps are designed to run
in either direction. See “Pump Rotation”, page 10.

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
or a rupture disk. Do not rely on decoupling of magnets
for protection from over pressure; this may result in
damage to the magnets, pump, or other equipment.

2. Relief valves are mounted as standard on the casing of
all pumps.

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

4. The relief valve adjusting screw cap must always point
towards the suction side of the pump, see Figure 2.
If the pump rotation is reversed, remove the pressure
relief valve and turn end for end (see “Pump Rotation”,
page 10).

5. Pressure relief valves cannot 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.

CAUTION !

Rare earth magnets used in couplings have
extremely strong magnetic fields capable of
changing performance or damaging items
such as the following:

Pacemakers
Metal Implants
Watches
Computers & disks
Credit Cards

CLEANING PUMP:

Keep the pump as clean as possible. This will facilitate
inspection, adjustment and repair work.

LUBRICATION:

Bracket bearings require external lubrication. This must be
applied slowly with a handgun to lubrication fittings every
500 hours of operation with multi-purpose grease, NLGI # 2.
Do not over-grease. Applications involving very high or low
temperatures will require other types of lubrication. Refer to
ESB-515. Consult factory with specific lubrication questions.

STORAGE:

If the pump is to be stored, drain and pour non-detergent
SAE 30-weight oil (or compatible alternative) into the pump
port. Apply grease to the pump shaft, if accessible. Viking
suggests rotating the pump shaft every 30 days to circulate
the oil in the pump. The pump should be stored in a dry area.

SUGGESTED REPAIR TOOLS:

The following tools are required to properly repair series
8124A, 8123A and 8127A pumps. These tools are in addition
to standard mechanics’ tools such as open-end wrenches,
pliers, screwdrivers, etc. Most of the items can be obtained
from an industrial supply house.

1. Soft face hammer

2. Allen wrench set (SAE)

3. Torque wrench with a locknut socket

4. Two feeler gauge sets

5. Arbor press

6. Brass bar

7. Hook style spanner wrench

8. Canister Sleeve (3-810-025-999-00)

9. Inner Magnet Lift (3-810-026-999-00)

10. Bearing Housing Lift (Figures 3 and 9)

DISCHARGE

SUCTION

RELIEF VALVE
ADJUSTING
SCREW CAP

FIGURE 2

RELIEF VALVE POSITION

MAINTENANCE

Series 8124A, 8123A and 8127A pumps are designed
for long, trouble-free service life under a wide variety of
application conditions with a minimum of maintenance. The
points listed below will help provide long service life.

NOTES:

1. Material must conform to ASTM A36

2. Dimensions are in inches

3. Tolerances are ± .02

4. Thickness is .25

FIGURE 3

BEARING HOUSING LIFT

SECTION TSM 635.3 ISSUE C PAGE 3 OF 13

Field 1 Field 2 Field 3 Field 4 Field 5 Field 6 Field 7 Field 8 Field 9

Q S 8 1 2 4 A-425 R

Size:

Q

QS

Shaft Sealing:

8=Sealless

Outer

Outer

Magnet

Magnet

Assembly

Assembly

Jacketing:

1=Non-Jacketed
Bracket

MODEL NUMBER SYSTEM

Assembly

Assembly

Series Edition:

A=Original
Design

Material of Construction:

3=SteelExternals
4=CastIron
7=StainlessSteel

FIGURE 4

Adaptor

Adaptor

Plate

Plate

Inner

Inner

Magnet

Magnet

Drive Congurations:

__=StandardPump
D=DirectDrive
R=ReducerDrive
P=PurchasedReducer

Torque Specications:

Q-QS=425Ft-lb
Q-QS=900Ft-lb

Thrust

Thrust

Washers

Washers

Tapered Roller

Tapered Roller
Bearings

Bearings

Bearing Housing

Bearing Housing

Canister

Canister

and Bushing

and Bushing

Assembly

Assembly

Shaft Bushing

Shaft Bushing

Bracket

Bracket

Casing

Casing

Rotor and Shaft

Rotor and Shaft

Internal

Internal

Relief Valve

Relief Valve

CUTAWAY VIEW OF UNIVERSAL MAG DRIVE PUMP

SECTION TSM 635.3 ISSUE C PAGE 4 OF 13

FIGURE 5