TECHNICAL SERVICE MANUAL
SECTION TSM 845
MAGNETIC DRIVE PUMPS
SERIES 823 – STEEL
825 – CAST IRON
827 – STAINLESS STEEL
SIzES K & KK
PAGE
ISSUE
1 Of 14
f
Model Number Chart
CONTENTS
Introduction 1
UNMOUNTED
UNITS
Safety Information
Special Information 3
Maintenance 3
Disassembly: Pump
Disassembly: Coupling 6
Disassembly & Assembly
of MD-C Series Bearing Housing 8
Installation of Bushings 10
Assembly: Coupling
Adjusting Head Gasket End Clearance
2
Units are designated by the
unmounted pump model numbers
followed by a letter(s) indicating
drive style
K-823 , 825 , 827
KK823 , 825 , 827
4
B = Bracket Mount
R = Viking Reducer Drive
P = Commercial Speed Reducer
(Example: KK-827-MD-C80R)
10
11
TABLE 1
Pump Rotation 11
Pressure Relief Valve
Troubleshooting
11
13
This manual deals only with Series 823, 825 and 827 magnetic
drive pumps and couplings Refer to Figures 1 thru 23
for general configuration and nomenclature used in this
manual Pump specifications and recommendations are
listed in Catalog Section 845
Warranty 14
WARNING !
Persons with surgical implants of a
metallic or electronic nature should
avoid working on pump – especially the
inner magnet assembly.
INTRODUCTION
The illustrations used in this manual are for identification
purposes only and should not be used for ordering parts
Secure a parts list from the factory or a Viking® representative
Always give complete name of part, part number or material
with model number and serial number of pump when ordering
repair parts The unmounted pump or pump unit model
number and serial number can be found on the nameplate
FIGURE 1
K & KK-827 (stainless steel) MD-C80 B
Bearing Carrier, Footed Bracket and
Mounted Pump with Flanged Ports.
In the Viking® model number system, the basic size letters
are combined with the series (823, 825, 827), indicating basic
pump construction material (steel, cast iron, or stainless steel
respectively) See Model Number Chart.
FIGURE 2
K & KK-825 (cast iron) MD-C80 R
Unit complete with Motor, “B”
Gear Reducer, Bearing Carrier
mounted to base with Mounted
Pump featuring Tapped Ports.
VIKING PUMP, INC. • A Unit of IDEX Corporation • Cedar Falls, IA 50613 USA
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DISCHARGE
SPECIAL INFORMATION
DANGER !
Before opening any Viking pump liquid
chamber (pumping chamber, reservoir,
etc.) Be sure:
SUCTION
1. That any pressure in the chamber has
been completely vented through the
suction or discharge lines or other
appropriateopeningsorconnections.
(See detailed procedure for venting
the pumps, pages 4, 5 and 6).
2. That the driving means (motor,
turbine, engine, etc.) has been
“locked out” or made otherwise non-
operational so that it cannot be
inadvertently started while work is
being done on the pump.
RELIEF VALVE ADJUSTING SCREW CAP
FIGURE 3
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.
MAINTENANCE
CAUTION !
Rare earth magnets used in these
couplings have extremely strong
magnetic fields capable of changing the
performance or damaging items such as
the following:
Failure
to
follow
above
listed
precautionary measures may result in
serious injury or death.
Pacemakers
Metal Implants
Watches
Computers & discs
Credit Cards
ROTATION: Viking Mag-Drive® pumps are designed to run
in the direction indicated on the nameplate only If rotation
must be reversed, see “Pump Rotation” on page 10.
Completely
couplings will not affect items listed
above.
assembled
magnetic
PRESSURE RELIEF VALVES:
1. Relief valves are mounted on the head of K and KK
size pumps Relief Valves are not available on jacketed
heads
Altered performance or damage can
occur only when the coupling halves are
separated.
2. If a Relief Valve is not furnished on the pump, some
means of over protection such as an in-line relief valve
should be provided Do not rely on magnets decoupling
for protection from over pressure This may result in
damage to magnets, pump or other equipment
There are no known harmful effects of
these magnetic fields on the human
body.
3. 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 (See “Pump Rotation” on page 10 for additional
steps required for proper operation) See Figure 3.
Series 823, 825 and 827 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
4. 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.
SECTION TSM 845
ISSUE
F
PAGE 3 OF 14
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CLEANING PUMP: Keep pump as clean as possible This
will facilitate inspection, adjustment and repair work
DANGER !
STORAGE: If pump and coupling are to be stored, drain pump
and pour non-detergent SAE 30 weight oil into the pump port
Apply grease to the pump or the coupling shaft extension, if
present or accessible Viking suggests rotating pump shaft by
hand one complete revolution every 30 days to circulate the
oil The coupling should be stored in a dry area
Before opening any Viking pump liquid
chamber (pumping chamber, reservoir,
etc.) Be sure:
1. That any pressure in the chamber has
been completely vented through the
suction or discharge lines or other
appropriateopeningsorconnections.
(See detailed procedure for venting
the pumps, pages 4, 5 and 6).
Note: if the liquid to be pumped reacts with oil, use an
acceptable alternate.
SUGGESTED REPAIR TOOLS: The following tools are
required to properly repair Series 823, 825, and 827 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
2. That the driving means (motor,
turbine, engine, etc.) has been
“locked out” or otherwise made non-
operational so that it cannot be
inadvertently started while work is
being done on the pump.
1. Soft face hammer
2. Allen wrenches
3. External Snap ring pliers - 2-810-029-375
4. Internal Snap ring pliers - 2-810-047-999
5. Feeler gauge set
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.
6. Arbor Press
7. Brass Bar
8. Hand Knobs - 2-790-046-999 (2 Required)
9. Standard 5/16” 12 point socket
Failure
to
follow
above
listed
DISASSEMBLY: PUMP
1. Refer to Figures 4, 5 & 6 for names of parts
precautionary measures may result in
serious injury or death.
2. Mark head, casing, and bracket before disassembly to
insure proper reassembly The idler pin, which is offset in
the pump head, must be positioned toward and an equal
distance from port connections to allow for proper flow of
liquid through the pump
3. Remove the head capscrews
ROTOR
BALANCE
CANISTER
O-RINGS
CASING
PLATE
CANISTER
OUTER MAGNET
ASSEMBLY
BRACKET
BUSHINGS
IDLER PIN
PRESSURE
RELIEF
VALVE
BEARING
CARRIER
ASSEMBLY
BRACKET
BRACKET
IDLER
HEAD
INNER MAGNET
ASSEMBLY
HEAD
GASKET
FIGURE 4
CUTAWAY VIEW MAG-DRIVE PUMP, MODEL KK-825 MD-80 B ILLUSTRATED
SECTION TSM 845
ISSUE
F
PAGE 4 OF 14
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4. Remove head from pump Do not allow idler to fall from 7. Mark the location and orientation of the Balance plate
idler pin Tilt top of head back when removing to prevent
this Avoid damaging head gasket set, all gaskets are
required to maintain end clearance
before removing by pulling out (The balance plate may
not be removable in the 825 series)
The casing should be examined for wear, particularly in the
5. Remove idler and bushing assembly If idler bushing area between ports All parts should be checked for wear
needs replacing, see “Installation of Bushings” before pump is assembled
page 9. If further disassembly is required pump must
be separated from coupling Refer to “Disassembly:
Coupling,” on page 6, before proceeding with Step 6
When making major repairs, such as replacing a rotor and
shaft, it is advisable to also install a new head and idler pin,
idler and bushing, and casing bushings See “Installation of
6. After inner magnet is removed then remove key and Bushings” on page 9.
external retaining ring from the shaft Rotor and shaft
may now be extracted by tapping on end of the shaft
with a soft face hammer (if a soft faced hammer is
unavailable a regular hammer may be used with a piece
Clean all parts thoroughly and examine for wear or damage
Check bushings, idler pin and balance plate; replace if
necessary
of hardwood)
ITEM
NAME OF PART
Bracket Gasket - Primary
ITEM
10
NAME OF PART
ITEM
19
NAME OF PART
1
2
3
4
5
6
7
8
9
Casing
Head Gasket
Idler Pin
Bracket Gasket
Orifice
11
Capscrew for Inner Magnet
Lockwasher
20
12
21
Head & Pin
Pipe Plug
Bracket
13
Washer
22
Capscrews for Casing
Casing Gasket
Bracket Bushings
Balance Plate (Maybe Not in 825)
Pipe Plugs
14
External Retaining Ring
Key
23
Capscrews for Head
Gaskets for Relief Valve
Relief Valve
15
24
16
Rotor & Shaft
Idler Bushing
25
17
26
Capscrews for Relief Valve
18
Idler & Bushing
FIGURE 5
K & KK MAG DRIVE PUMP
SECTION TSM 845
ISSUE
F
PAGE 5 OF 14
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ITEM
NAME OF PART
ITEM
NAME OF PART
Ball Bearing (2 Req’d)
ITEM
9
NAME OF PART
1
2
3
4
Capscrews
5
6
7
8
Bracket
Canister
External Snap Ring
Bearing Housing
Bearing Spacer
Internal Snap Ring
Key
10
11
Inner Magnet Assembly
Hand Knobs
Outer Mag Assembly
12
FIGURE 6
MD-C SERIES COUPLING
DISASSEMBLY: COUPLING
CAUTION !
SERIES MD-C80 COUPLING
Magnet sets are extremely powerful.
Serious injury may result if proper
procedures are not followed.
1. If unit has a spacer coupling then bracket of coupling
can stay bolted to base Without spacer coupling, either
the reducer will need to be removed or the coupling
unbolting Remove piping to pump, provide a minimum
of 4” of clearance beyond end of coupling shaft Insert
(2) 5” U N C handknobs which have a minimum of 4 5”
of full threads into the two tapped holes at 9 and 3 00
positions on the back of the bearing housing Remove
the (4) 375 capscrews See Figure 7.
2. Turn the handwheels evenly to back out the bearing
housing and outer magnet assembly See Figure 8.
.375” CAPSCREWS (4 REQ’D)
FIGURE 8
HAND KNOBS (2 REQ’D) 2-790-046-999
FIGURE 7
SECTION TSM 845
ISSUE
F
PAGE 6 OF 14
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4. Insert a brass bar through a port between two rotor teeth
and loosen the capscrew holding the inner magnet to
the shaft (See Figure 11). Do not forget, this is a very
strong magnet If pump disassembly is required, remove
the external retaining ring
CAUTION !
Do not attempt to pull the magnet sets
apart by hand until the outer has been
backed off 4”. Support the outer magnet
assembly and pull completely away from
the inner magnet. Be careful when setting
down this unit to avoid tools and other
metal objects being attracted to the end of
the magnet.
5. Do not remove the O-ring unless it is bad, especially
if PTFE (Derivative) encapsulated If a new O-ring is
required, follow instructions in the “Assembly: Pump”
on page 7.
SECONDARY
0.44”
O-RING
CAPSCREW
WITH HOLE
3. Supportpumpwithhoistandremovethe(4) 5”capscrews
See Figure 9. Pull the pump out of the bracket; there will
be some resistance to pull apart since the inner magnet
assembly will be attracted to the coupling bracket If
further disassembly of the bearing carrier is required,
refer to page 7. Since there will be some liquid left in
the canister, be aware that liquid will run out when the
canister separates from the pump Remove canister if it
has not already come off the pump
WASHER
INNER
PRIMARY
O-RING
MAGNET
LOCK
WASHER
ExTERNAL
RETAINING
RING
0.5” CAPSCREWS (4 REQ’D)
FIGURE 11
FIGURE 9
0.44” CAPSCREW RIGHT
HAND THREADS
CANISTER
BRASS BAR
FIGURE 10
SECTION TSM 845
ISSUE
F
PAGE 7 OF 14
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PRESS
DISASSEMBLY & ASSEMBLY OF
MD-C SERIES BEARING HOUSING
DISASSEMBLY
The bearing housing features two sealed ball bearings along
with an outer magnet assembly If further disassembly of this
unit is required, proceed as follows:
1. Refer to Figure 12 for part identification Cover the open
end of the outer magnet with a piece sheet metal or
cardboard This will keep foreign material out of magnet
area Set the assembly face down with the shaft pointing
up and remove handknobs
2. Remove external retaining ring from shaft, place unit
into press and push out shaft as shown in Figure 13.
Support end of outer magnet to prevent it from dropping
as possibly being damaged
3. Remove the internal retaining ring and press out
bearings
BEARING
HOUSING
SHEET METAL
COVER 6.50”
SQUARE
INTERNAL
RETAINING
RING
FIGURE 13
SPACER
ExTERNAL
RETAINING
RING
SPACER
(3”NPT
COUPLING)
PRESS
BALL BEARINGS
FIGURE 12
ASSEMBLY
1. Place (1) bearing into housing bore Gently tap or press
into bore Position spacer in bore and insert second
bearing Press down until bearings bottom out Install
internal retaining ring into bearing housing
2. Slide shaft of outer magnet assembly into bearing until
it meets resistance Set upright in press (See Figure
14) and place a spacer on the end of housing such as
3” NPT coupling and press housing down until bearing
bottoms out on shaft shoulder Install external retaining
ring on shaft of outer magnet assembly
FIGURE 14
SECTION TSM 845
ISSUE
F
PAGE 8 OF 14
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5. If old gaskets are not reusable, refer to “Adjusting
Head Gasket End Clearance” on page 10. Otherwise,
place the head gaskets on the head The proper amount
of gaskets should be used to provide the correct end
clearance Table 2 gives the quantity of gaskets available
in a gasket set along with standard end clearance
ASSEMBLY: PUMP
Use a suitable lubricant compatible with the fluid being
handled when reassembling the pump
Inspect all parts, especially drilled holes in casing for the suck
back system to make sure they are not plugged Replace any
worn parts and polish any burrs; clean all parts; assemble
pump
GASKET TABLE
1. If the canister O-rings need to be replaced, apply a
lubricant to the O-ring and place into the O-ring groove
If the O-ring is PTFE (derivative) encapsulated, follow
these special instructions
NORMAL END SET OF GASKETS
PUMP MODEL
CLEARANCE CONSISTS OF THE
(iNCH )
FOLLOWING
Do not attempt to reuse the primary O-ring if it has been
removed (and is PTFE derivative encapsulated) Immerse a
new O-ring in boiling water and stretch out O-ring so it will
fit onto casing hub without forcing over a sharp edge Run
hot water over O-ring until it shrinks down tight onto the pilot
of the pump Dry with compressed air The secondary PTFE
derivative encapsulated O-ring can be placed in the bracket
groove with some lubricant
K & KK 825
008
(1) 015
(2) 007
(3) 005
K & KK 823, 827
010
End clearances are adequate for viscosity’s up to 750 SSU
(SAE 20-lube oil at room temperature) Higher viscosity
liquids require additional end clearances
2. If casing was removed from bracket, inspect flat
gasket and replace if necessary. Install casing onto
bracket pilot in the same orientation as before. This
series of pumps does not allow rotating the casing
to alternate port configurations – to modify the port
arrangement, Refer to “Pump Rotation” on page 10.
Secure the casing with (8) capscrews
TABLE 2
As a general guideline, for viscosity’s between 750 and
7500 SSU (heavier lube oils) double the amount of end
clearance indicated, for viscosity’s between 7500 and
25,000 SSU (e g , resins) triple the amount indicated
3. Place the balance plate (if separate from bracket) into
the casing bore (this step may not be required in the
825 series) Make sure plate is positioned the same as
before Refer to Figure 15 for standard balance plate
positioning
For specific recommendations for end clearances for
viscosity or for operating temperatures above 225ºF,
check with your Viking Representative or consult the
factory
6. Coat the idler pin with a suitable lubricant and place the
idler on the idler pin in the head
DISCHARGE
PORT
7. The head can now be assembled on the pump Tilt the
top of the pump head away from the pump slightly until
the crescent enters the inside diameter of the rotor and
rotate the idler until its teeth mesh with the rotor teeth
Pump head and casing should have been marked before
disassembly to insure proper reassembly If not, be sure
idler pin, which is offset in the pump head, is positioned
toward and an equal distance from port connections to
allow for proper flow of liquid through the pump
SUCTION
PORT
GROOVE
8. Install relief valve if provided and removed Valve cap
should point to Suction side of the pump (See Figure 3
on page 2).
9. Place key and external retaining ring onto shaft then
follow instruction listed for assembling to the coupling
STANDARD POSITION
CW ROTATION AS
VIEWED FROM HEAD
FIGURE 15
4. Clean rotor and shaft so it is free of dirt, grit and other
debris and apply lubricant Push into casing and bracket
bushings as far as it will go
SECTION TSM 845
ISSUE
F
PAGE 9 OF 14
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2. Inspect canister O-ring for signs of wear and replace if
necessary Slide canister over inner magnet and press
over O-ring until canister meets the pump mounting
flange
INSTALLATION OF BUSHINGS
CARBON GRAPHITE:
When installing carbon graphite bushings, extreme care must
be taken to prevent breaking Carbon graphite is a brittle
material and easily cracked If cracked, the bushing will
quickly disintegrate Using a lubricant and adding a chamfer
on the bushing and the mating part will help in installation
The additional precautions listed below must be followed for
proper installation:
3. Support the pump from overhead and secure coupling
bracket to avoid tipping when pump is attached Using
the canister as a guide, slide the pump assembly up
to the coupling bracket through the smaller opening
Secure with the four 0 5” capscrews See Figure 17.
When removing old bracket bushings, mark location of
lubrication groove
PUMP - BRACKET CAPSCREWS
(4 REQUIRED)
1. An arbor press must be used for installation
2. Be certain bushing is started straight
3. Do not stop pressing operation until bushing is in proper
position, starting and stopping will result in a cracked
bushing
4. Check bushing for cracks after installation
SILICON CARBIDE
When installing Silicon Carbide bushings into a metal part
the mating part must be heated to 600° F (preferable in an
oven) The bushing must be put into the proper position
quickly before the mating part cools down and the bushing
heats up Failure to follow this procedure will result in cracked
bushings
FIGURE 17
4. The outer magnet should be installed into the bearing
housing, if not refer to Disassembly & Assembly of
Bearing Housing Install hand knobs so that 4” of threads
are projecting below housing Support bearing housing
from overhead and gently position magnet over canister
so the magnet assemblies start to engage Evenly
back out the hand knobs See Figure 18. the bearing
housing move toward the bracket as the hand knobs are
removed
ASSEMBLY COUPLING:
SERIES MD-C80 COUPLING
DANGER !
Follow these directions exactly to avoid
injury to self or damage to pumping unit.
Be careful to keep inner & outer magnets
at least (1) foot apart until step 3. Do not
engage magnets in any other fashion.
FIGURE 18
1. Inspect magnets for any steel objects attached to the
magnets Remove any foreign material Place external
retaining ring and key on pump shaft Slide inner magnet
assembly onto shaft so it butts against retaining ring
Install washer, lock washer and capscrew to secure
magnet (See Figure 16). Insert a brass bar through a
port between two rotor teeth and tighten capscrew
5. Install the (4) 0 375” capscrews Turn the output shaft
over by hand to make sure the pump rotates freely See
Figure 19).
0.375” CAPSCREWS
(4 REQUIRED)
CANISTER
SECONDARY O-RING
0.44”
CAPSCREW
WITH HOLE
LOCK
WASHER
WASHER
INNER
MAGNET
PRIMARY O-RING
ExTERNAL
RETAINING
RING
FIGURE 19
FIGURE 16
SECTION TSM 845
ISSUE
F
PAGE 10 OF 14
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ADJUSTING HEAD GASKET
END CLEARANCE
Use either of the following procedures to properly adjust the
end clearance when replacing gaskets:
PUMP ROTATION
The pump is designed to take fluid from the discharge side
of the pump and channel it down the idler pin into the shaft
and out into the canister through the capscrew which secures
the inner magnet The fluid is returned through a hole in
the casing back to the suction side of the pump There are
generally three parts which may need replacing or adjusting
to change rotation
PROCEDURE A:
With balance plate in position, slide rotor and shaft into
casing Insert a feeler gage of the proper thickness into the
port and between two rotor teeth (See Figure 20 on page
10). Install one 0 015” and one 0 007” gasket onto head
With the idler on the idler pin, place the head into the pump
casing With the capscrews tight, the feeler gage should fit
snugly, otherwise gaskets should be added or removed until
the proper clearance is attained
HEAD & PIN – Hole should be from the discharge side of
head to the pin and a pipe plug is placed in the tapped hole
on the suction side of the head To change rotation, move the
plug to the opposite side of the head
BALANCE PLATE – If the plate is separate from the bracket
and looks like the StyleAin Figure 22, it can be reversed The
groove should connect the discharge port to the bushing bore
If rotation is changed, the plate is flipped over (not rotated)
and the groove would not be visible but will still function
properly If the plate is like Style B, it is NOT reversible and a
new plate will be required
BRACKET – The bracket will have two holes drilled through
and tapped on one side The discharge side of the bracket
should feature a pipe plug with a hole drilled through it To
change rotation simply move this pipe plug to the other hole
Contact your local Viking distributor or the factory to determine
which parts are required
GROOVE
FIGURE 20
PROCEDURE B:
If the pump is in line and the ports are not accessible,
remove the head and gaskets Put the head back on (without
gaskets) and measure the gap as shown (See Figure 21 on
page 10). After determining the gap between the head and
casing, select a combination of gaskets with approximately
25% more total thickness than the gap plus the required end
clearance Note that the gaskets will compress when head is
tightened down Remove the head, install all gaskets then
replace the head Tighten the head capscrews and check
the pump clearance by making sure the pump turns freely
by hand
STYLE A
STYLE B
FIGURE 22
Since the pump shaft is concealed, it is best to work up the
proper end clearance because it is difficult to determine when
there is to much end clearance with this approach
FIGURE 21
SECTION TSM 845
ISSUE
F
PAGE 11 OF 14
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PRESSURE RELIEF VALVE
ASSEMBLY: RELIEF VALVE
Reverse procedures outlined under Disassembly If valve
is removed for repairs, be sure to replace in same position
Relief valve adjusting screw cap must always point towards
suction side of pump If pump rotation is reversed, remove
relief valve and turn end for end Refer to Figure 3, page 2.
DANGER !
Before opening any Viking pump liquid
chamber (pumping chamber, reservoir,
etc.) Be sure:
1. That any pressure in the chamber has
been completely vented through the
suction or discharge lines or other
appropriateopeningsorconnections.
(See detailed procedure for venting
the pumps, pages 4, 5 and 6).
PRESSURE ADJUSTMENT
If a new spring is installed or if pressure setting of pressure
relief valve is to be changed from that which the factory has
set, the following instructions must be carefully followed
1. Carefully remove valve cap, which covers adjusting
screw
2. That the driving means (motor,
turbine, engine, etc.) has been
“locked out” or made otherwise non-
operational so that it cannot be
inadvertently started while work is
being done on the pump.
Loosen locknut, which locks adjusting screw so pressure
setting will not change during operation of pump
2. Install a pressure gauge in discharge line for actual
adjustment operation
3. Turn adjusting screw in to increase pressure and out to
decrease pressure
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.
4. With discharge line closed at a point beyond pressure
gauge, gauge will show maximum pressure valve will
allow while pump is in operation
IMPORTANT
In ordering parts for pressure relief valve, always give
model number and serial number of pump as it appears on
nameplate and name of part wanted When ordering springs,
be sure to give pressure setting desired
Failure
to
follow
above
listed
precautionary measures may result in
serious injury or death.
DISASSEMBLY: RELIEF VALVE
Mark valve and head before disassembly to insure proper
reassembly
1. Remove valve cap
2. Measure and record length of extension of adjusting
screw Refer to “A” on Figure 23.
3. Loosen locknut and back out adjusting screw until spring
pressure is released
4. Remove bonnet, spring guide, spring and poppet from
valve body Clean and inspect all parts for wear or
damage and replace as necessary
VALVE - AS, AK AND AL SIzES
VALVE - LIST OF PARTS
1 Valve Cap
2 Adjusting Screw
3 Lock Nut
6 Valve Body
7 Valve Spring
8 Poppet
DANGER !
Before starting pump, be sure all drive
equipment guards are in place.
4 Spring Guide
5 Bonnet
9 Cap Gasket
10 Bonnet Gasket
Failure to properly mount guards may
result in serious injury or death.
FIGURE 23
SECTION TSM 845
ISSUE
F
PAGE 12 OF 14
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TROUBLESHOOTING
PUMP INFORMATION
Some of the following may help pinpoint the problem:
Pump Model Number:
Pump does not pump:
►
►
►
►
►
Lost its prime from air lead or low level in tank
Suction lift too high
Serial Number:
Date Received:
Date Installed:
Distributor:
Rotating in wrong direction
Strainer clogged
Bypass valve open, pressure relief valve set too low or
pressure relief valve poppet stuck open
►
►
►
Improper end clearance
Pump worn out
Any changes in liquid, system or operation that would
influence pump or coupling performance, e g new liquid,
additional lines or process changes
►
►
Temperature changes either in the liquid or the
environment
Magnetic coupling is decoupling Change in application
(temperature, pressure, viscosity,’ etc ) may require
torque beyond coupling capabilities
Contact Person:
Phone:
Pump starts, then loses its prime:
►
►
►
Supply tank empty
Liquid vaporizing in the suction line
Air leak or air pocket in the suction line
Fax:
Pump is noisy:
►
Pump is being starved (heavy liquid cannot get to pump
fast enough) Increase suction pipe size, reduce length
or slow down pump
E-mail:
►
Pump is cavitating (liquid vaporizing in suction line)
Increase suction pipe size or reduce length
►
►
Check alignment
Magnetic coupling decoupled Shut off and restart
Comments:
Pump not delivering up to capacity:
►
Starving or cavitating - increase suction pipe size or
reduce length
►
►
►
Strainer partially clogged
Air leak somewhere in suction line
Running too slow Is motor the correct speed and
wired up correctly
►
Pressure relief valve set too low, tuck open or has
damaged poppet / seat
►
►
Bypass line around pump partially open
Pump worn out or too many gaskets
Pump takes too much power (stalls motor):
►
►
►
►
Liquid more viscous than unit sized to handle
System pressure relief valve set too high
Coupling misaligned
Bushings frozen up or liquid set up in coupling
SECTION TSM 845
ISSUE
F
PAGE 13 OF 14
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TECHNICAL SERVICE MANUAL
SECTION TSM 845
MAGNETIC DRIVE PUMPS
SERIES 823 – STEEL
825 – CAST IRON
PAGE
ISSUE
14 OF 14
F
827 – STAINLESS STEEL
SIzES K & KK
CAUTION !
TO REDUCE THE RISK OF LEAKAGE WITH VIKING
MAG DRIVE PUMPS, USERS SHOULD COMPLY
WITH THE FOLLOWING GUIDELINES AND ADHERE
TO THE FOLLOWING PROCEDURES:
WARRANTY
Viking warrants all products manufactured by it to be
free from defects in workmanship or material for a
period of one (1) year from date of startup, provided
that in no event shall this warranty extend more than
eighteen (18) months from the date of shipment from
Viking. The warranty period for Universal Seal series
pumps ONLY (Universal Seal models listed below) is
three (3) years from date of startup, provided that in
no event shall this warranty extend more than forty-two
(42) months from the date of shipment from Viking.
■
The pump configuration and materials used in a pump
are tailored to the application for which it is ordered
Users should never use a pump for an application
that is different from the application specified when
the pump was ordered This includes differences in
liquid, speed, pressure, temperature or viscosity
■
Users must understand the characteristics of liquids
they are pumping and be especially aware of any
particulates in the liquid Particulates can cause
rapid wear of the bushings, especially if carbon
graphite bushings are used Hard bushings and
hard shafts can reduce the risk of rapid wear, but
the use of hard materials is not always the optimal
solution In applications involving non-abrasive, non-
self lubricating liquids, carbon graphite bushings are
typically the preferred material
UNDER NO CIRCUMSTANCES SHALL VIKING BE
LIABLE UNDER THIS WARRANTY OR OTHERWISE
FOR
SPECIAL,
INCIDENTAL,
INDIRECT,
CONSEQUENTIAL OR PUNITIVE DAMAGES OF ANY
KIND, INCLUDING, BUT NOT LIMITED TO, LOST
OR UNREALIZED SALES, REVENUES, PROFITS,
INCOME, COST SAVINGS OR BUSINESS, LOST OR
UNREALIZED CONTRACTS, LOSS OF GOODWILL,
DAMAGE TO REPUTATION, LOSS OF PROPERTY,
LOSS OF INFORMATION OR DATA, LOSS OF
PRODUCTION, DOWNTIME, OR INCREASED
COSTS, IN CONNECTION WITH ANY PRODUCT,
EVEN IF VIKING HAS BEEN ADVISED OR PLACED
ON NOTICE OF THE POSSIBILITY OF SUCH
DAMAGES AND NOTWITHSTANDING THE FAILURE
OF ANY ESSENTIAL PURPOSE OF ANY PRODUCT.
■
Users should periodically inspect their pump for
wear
This is especially critical and should be
carried out with greater frequency when carbon
graphite bushings are used or the same pump has
not previously been used for the same application,
including the same liquid, speed, pressure,
temperature and viscosity Users should promptly
replace worn parts when they are discovered
THIS WARRANTY IS AND SHALL BE VIKING’S SOLE
AND EXCLUSIVE WARRANTY AND SHALL BE IN
LIEU OF ALL OTHER WARRANTIES, EXPRESS
OR IMPLIED, INCLUDING, BUT NOT LIMITED
TO, ALL WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND
NON-INFRINGEMENT ALL OF WHICH OTHER
WARRANTIES ARE EXPRESSLY EXCLUDED.
■
Users should continuously monitor pumps that are
handling hazardous liquids This is especially critical
for unmanned, remote locations If a user does not
have in-house expertise in the area of monitoring,
it should contact a local engineering firm with
monitoring experience
© 3/2013 Viking Pump Inc.
All rights reserved
VIKING PUMP, INC. • A Unit of IDEX Corporation • Cedar Falls, IA 50613 USA
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