Pentair Aurora 382 SC Series Manual

1"
"
Part # A-03-369 | © 2015 Pentair Ltd. | 07/06/15

2"
"
IMPORTANT NOTE TO INSTALLER:
This manual contains important information about the
installation, handling, operation and safe use of Pentair
vertical in-line pumps. This information should be given to
the owner/operator of this equipment. The following
instructions must be strictly adhered to get a safety and
failure-free operation.
APPLICATIONS:
The 382 SC series pumps are superior commercial in-line
pumps which have been manufactured and field tested under
the severest demands. Pumping applications for the 382 SC
include: hot or chilled water circulation, pressure booster
systems and cooling towers for office buildings, hotels,
hospitals, universities and warehouses.
ATTENTION: SAFETY WARNINGS:
Read and understand all the warnings before installation or
servicing pump.
•Handling, transportation and installation of this
equipment should only be undertaken by trained
personnel with proper use of lifting equipment. (Refer
lifting arrangements “FIG. 3”)
•Only water or other suitable HVAC media may be
circulated through the use of these pumps. Circulation of
hazardous, corrosive or flammable liquids by using these
pumps is strictly prohibited.
•DO NOT turn on the electrical supply to the pump until
all the plumbing connections and commissioning
procedure have been accomplished.
•The pump must not be operated dry without fluid.
•Pipe systems must be installed in such a manner so that
minimum load is transferred on pump flanges.
•Ensure that the motor installation instruction manual has
been followed for determining the proper terminal
connections so that correct pump rotation is obtained.
OPERATIONAL LIMITS: *
•Maximum operating pressure at temperature 150°F
(65.6°C) is:
i. 125# Flanges: 175 PSI
ii. Up to 250 PSI dependent on the Mechanical Seal
•Maximum operating temperature: 225°F (107°C)
(Standard Seal)
•Pump Speed and Head: Refer the pump nameplate
*See ASTM A126/ANSI B16.1 for pressure/temperature
ratings of flanges
NOISE & VIBRATION LEVELS:
382 SC pumps are designed to meet the noise and vibration
levels as per HI standard 9.6.4.
ELECTRICAL SAFETY:
HIGH TEMPERATURE SAFETY:
HIGH PRESSURE SAFETY:
CALIFORNIA PROPOSITION 65 WARNING:
Warning: This product and related
accessories contain chemicals known to the State of
California to cause cancer, birth defects or other
reproductive harm.
"
Warning: Expansion Hazard
Water expands when heated. Install properly sized
thermal expansion tanks and relief valves. Failure to
follow these instructions could result in serious personal
injury, death or property damage.
"
Warning: Spraying Water Hazard
When servicing pump replace all gaskets and seals. Do
not re-use old gaskets or seals. Failure to follow these
instructions could result in serious personal injury, death
or property damage.
Warning: Hot Surface Hazard
If pumping hot water, insure guards or proper insulation
is installed to protect against skin contact to hot piping or
pump components. Failure to follow these instructions
could result in serious personal injury, death or property
damage.
Warning: Electrical Overload Hazard
Insure all motors have properly sized overload protection.
Failure to follow these instructions could result in serious
personal injury, death or property damage.
Warning: Electrical Shock Hazard
All electrical connections are to be made by a qualified
electrician in accordance with all codes and ordinances.
Failure to follow these instructions could result in serious
personal injury, death or property damage.
"
Warning: Sudden Start-Up Hazard
Disconnect and lockout power source before servicing.
Failure to follow these instructions could result in serious
personal injury, death or property damage.
Warning: High Pressure Hazard
All single suction pumps are rated at a maximum of 175
psi and double suction pumps are rated at 250 psi. Do not
exceed this pressure. Install properly sized pressure relief
valves in system. Failure to follow these instructions
could result in serious personal injury, death or property
damage.
"

3"
"
PRODUCT DESCRIPTION"
CONFIGURATION:
Pumps are offered with various Mechanical seal types
available.
•Type 1
•Type 21
•Type 8B2
Along with above mentioned configurations, pumps are also
offered with following options required and mentioned by
customer at the time of placing order.
•With or without Impeller wear rings
•With or without Flush line
•With or without Abrasive separator
PARTS:
Refer Exploded view, FIG. 11 for listing various parts
INSTALLATION
READ AND UNDERSTAND ALL SAFETY WARNINGS
AT THE BEGINNING OF THE MANUAL BEFORE
BEGINNING INSTALLATION OR ANY REPAIR
WORK.
PUMP LOCATION:
The pump should be located as close to the liquid source as
possible so that the suction line can be short and direct.
Location should require a minimum of elbows and fittings in
the discharge line to minimize friction losses. The pump must
be protected against flooding and located in a clean, open area,
where it is easily accessible for inspection, disassembly and
repair.
To minimize friction losses pump should be located such that
the use of elbows and fittings in the discharge line is reduced.
Pumps installed in dark, dirty areas or in cramped locations
are often neglected, which can result in premature failure of
both the pump and the driver. Open area would also be helpful
in better air flow into the motor and/or motor fan.
The 382 SC pump must be installed
vertically. Install isolating valves on
each side of pump so that pump
maintenance can be performed
without draining the system. Special
mounting requirements may be
required if the pump is to be
mounted near a noise or vibration
sensitive area. The installation must
be evaluated to ensure that the net
positive suction head available
(NPSHA) meets or exceeds the net FIG.1
positive suction head required (NPSHR), as stated by the
pump performance curve.
STORAGE & PROTECTION:
All pumps are shop serviced and delivered in a ready to
operate condition. If the pump after being delivered is not put
into immediate operation then proper care should be taken so
that it operates without failure when put into service. The
pump should be kept in a clean and dry area in a vertical
position. Ensure that the following precautions are taken for
pumps being stored for more than six months.
•Pump surfaces which are machined and unpainted (e.g.
flange ends, feet mounting etc.) and are easily subjected
to corrosion must be protected by corrosion resistant
coating.
•The pump shaft should be rotated once in a month to
avoid locking of rotating assembly. This would also be
helpful in uniform distribution of lubrication on bearings.
•Bearings must be lubricated with fresh lubricants when
pump is being put into service after a long time.
UNCRATING AND LIFTING:
Before shipment pump is fastened securely to the crate. The
pump should be removed from the crate carefully by using
proper tools and equipment. After removing from crate make
sure that all the components are in good condition and have
been received as mentioned in the packing list. Report
immediately to the concerned person/department if any
component is missing or received in a damaged condition.
Extreme care must be taken while handling the pump set.
Slings and hooks should be used in such a manner, so that
while lifting the pump is not exposed to stresses.
METHODOLOGY TO ORIENT PUMPS VERTICALLY
WHILE UNPACKING THE UNIT.
Since the pumps are shipped horizontally laid on crate (shown
in FIG.2). It is necessary to orient pumps vertically before
shifting to their installation location. Once the unit is
uncovered, lift the unit by placing straps around the motor
while making a pivot point of casing. Human effort will also
be required to orient the unit to vertical position. Now let the
unit to rest on crate and follow the procedure mentioned
below to place the unit to its desired location.
FIG. 2
NOTE:
For typical installation, suitable overhead lifting equipment of
adequate capacity to lift the driver, the entire pump (without
driver), or the heaviest sub assembly of the pump should be
available at the jobsite when installing or removing the pump.

4"
"
Use following procedure for lifting the pump set.
i. Remove the coupling guard
ii. Place lifting straps/slings on each side of coupling
through the motor bracket as shown in the FIG.3.
iii. Use spreader bar in between the slings if necessary. This
would be helpful for protecting the motor fan cover
while lifting.
iv. DO NOT use eye bolt or lifting lugs on motor and/or
motor bracket for lifting the entire unit.
v. DO NOT place cable slings around the motor shaft.
FIG.3
COMMISSIONING
MOUNTING:
The pump has been designed to be installed in various
configurations as shown in the images below.
1. HANGER SUPPORTED PIPE MOUNTED:
(Models 10x10x19, 10x10x14, 12x12x14, 12x12x18,
14x14x15 and 14x14x18 Only)
Where floor space is a restriction, 382 SC Vertical Inline
pump can be installed in the system piping without any
additional support from base, illustrated in FIG.4. For
such an installation, care must be taken to ensure that
pipe hangers are designed to bear additional weight of
pump set.
FIG. 4
2. PIPE MOUNTED SUPPORTED AT CEILING:
(Models 10x10x19, 10x10x14, 12x12x14, 12x12x18,
14x14x15 and 14x14x18 Only)
In tight rooms pump can be installed directly into the
system piping with no base support and piping can be
supported close to ceiling. With this arrangement the
pump may be installed with a multi-purpose valve on the
discharge side and suction diffuser on the suction side of
the pump, as illustrated in FIG.5.
"
"
"
FIG 5.
3. FLOOR SADDLE SUPPORT:
(Models 10x10x19, 10x10x14, 12x12x14, 12x12x18,
14x14x15 and 14x14x18 Only)
In many of the installation locations where support to
pump from above is not possible, floor mounted saddle
support can be provided beneath suction and discharge
piping. The pump case may be mounted on a base in
such an installation but is not necessary. The installation
is illustrated in FIG.6.

5"
"
"
FIG.6
4. PIPE SUPPORTS:
(Models 10x10x19, 10x10x14, 12x12x14, 12x12x18,
14x14x15 and 14x14x18 Only)
For ease of installation and increasing rigidity of the unit,
a Structural support may be provided at the pump suction
and discharge ports with Isolation pads beneath the
support, as illustrated in FIG.7. It is to be ensured that
pipe hangers are so adjusted that pump flanges do not
support the piping.
FIG.7
5. FLOOR MOUNTED:
It is recommended that larger double suction vertical in-
line pumps be floor mounted. This recommendation is
based on the account of weight of pump and motor
assembly. A mounting base is to be used for floor
mounting which can be fastened to the integral cast in
feet on the bottom of casing, as illustrated in FIG.8.
Make sure that pump is firmly bolted to the mounting
base which in turn is also rigidly secured and mounted on
the floor. During floor mounting it is recommended that
flexible connectors are used to eliminate the potential for
pipe load to be transferred to the pump. If flexible
connectors are not used, it is very important to closely
monitor the height of the pump support. If the height of
support is more than required then the entire pipe load
will be transferred to the pump which will start acting
like a pipe support.
"
FIG.8A
FIG.8B
While installing the pump unit in pipeline, it is
recommended to use standard piping supports on either
side of the pump to eliminate pipe stresses. For
supporting the pump from bottom, case feet has been
drilled and tapped to incorporate pipe flange supports of:
S. No.
PUMP NAME
FEET DRILLING
AS PER FLANGE
1
2x7, 2x9C
2”
2
2-1/2x7, 3x7A&7B,
4x7A&7B, 2-1/2x9,
3x4x9, 4x5x9
3”
3
5x9, 6x9,
4x11, 5x11, 6x11,
8x11,
4x12, 5x12, 6x12,
8x12
4”
4
8x15, 10x15
6”
5
10x14, 10x19
8”
6
12x14, 12x18, 14x15,
14x18
10”
PIPING:
A minimum length of straight pipe is required on the suction
side of the pump. Five times the pipe diameter is sufficient to
allow a smooth entry of liquid into the pump.
Avoid using short elbows as they tend to give higher friction
losses and interruption in streamline flow. Suction and
discharge piping must be in line. To avoid undue stresses on
pump and pipe flanges, never force align the pipes and
provide a rigid support near the pump casing. Pump flanges
must be tightened evenly to avoid flange cocking and liquid
leakage.

6"
"
Air leak/trapped in suction piping is one of the major cause of
erratic pump performance. To avoid any such kind of trouble,
suction piping should be arranged on such a manner that there
are no high spots. This is to ensure that air is not trapped in
the suction line which will cause faulty pump operation.
Wherever suction line is larger than the pump suction nozzle,
it is mandatory to use an eccentric reducer. For sumps below
center line the straight side of the reducer must be located
upwards so that any air cavity if present in the suction line
passes through the line to outlet and there is no pressure drop
at pump suction due to presence of air pockets.
The check valve must be installed in the discharge line which
prevents backward flow of liquid into the pump, thereby
protecting the pump from liquid back pressure.
Note: The suction valve should be fully open and not be used
for flow regulation. The discharge valve is used for flow
regulation.
OPERATION
The following points must be ensured before starting the
pump:
i. The current supply agrees with the voltage and frequency
on the motor nameplate.
ii. The motor is wired for correct voltage.
iii. The thermal overload relays are correct size and set for
operation.
iv. The pump is fully primed. Flood the casing and seal area
with liquid to release the air out of pump through flush
line and air vent valve near discharge flange. Priming
must be continued till air is completely removed. This
would be indicated by continuous flow of liquid through
flush line and air vent. If, accessible, rotate shaft slowly
by hand to evacuate air trapped in the impeller passages
and to ensure free turning of the pump.
a. Failure to flood the seal area with water may
cause seal failure due to lack of lubrication.
v. Jog the motor to check that the motor rotates clockwise,
as indicated by the arrow on the pump casing.
vi. Coupling guard must be in its appropriate position on
account of human safety.
STARTING UP:
NOTE: MAKE SURE SUCTION LINE VALVE IS IN OPEN
POSITION AND DISCHARGE LINE VALVE CLOSED
1. Check that the pump is operating smoothly and is not
rubbing.
2. Start opening the discharge valve gradually.
(Note: Do not run the pump for extended period with
discharge valve closed, so as to avoid overheating and
potential damaging loads.)
3. The pump is also provided with a circulation relief valve
that prevents overheating when the pump is operating at
reduced capacity.
4. Stop the pump immediately if any of the following
situations arise:
i. No/insufficient liquid.
ii. Inadequate discharge pressure.
iii. Loss of suction pressure.
iv. High power consumption.
v. Noisy operation and/or High Vibration.
Check the manual for troubleshooting the cause.
SHUT DOWN:
It is advisable to close the discharge valve before stopping the
pump to avoid any water hammer effect. However, this
practice is not mandatory and pump may be stopped with
discharge valve open in case an emergency.
Preferred shutdown sequence is as follows:
1. Preferably close the discharge valve first.
2. Then turn off the motor.
3. Now, close the suction line valve.
4. Drain the pump liquid completely, if pump to be kept un-
operational for longer period or if there is danger of
freezing.
MAINTENANCE AND SERVICE
MAINTENANCE AND SERVICE TO THE PUMP
ROUTINE CHECK-UP:
Preventive maintenance and routine check-ups may prevent
the pump from major failures. An inspection & maintenance
log should be kept & the inspector is to immediately report
any problems. Pump should be checked on regular basis for
any unusual noise, vibrations and abnormal rise of
temperature. A suggested guide for preventive maintenance
for normal application is given below:
Items
Action
required
Frequency
Vibration
Check for
change in
vibration
Refer to ANSI/HI 9.6.5
Condition Monitoring
Bolting
Check for
loose bolting
Annually
Mechanical
Seals
Monitor seal
leakage
Refer to ANSI/HI 9.6.5
Condition Monitoring
LUBRICATION:
The pump does not contain any bearings that require
lubrication; however motor bearings must be lubricated
periodically. In dry locations, each bearing will need
lubrication at least after every 4,000 hours of running time or
6 to 12 months, whichever is more frequent. In wet locations
(exposed to dripping water, to the weather or to heavy
condensation found in unheated or poorly ventilated
underground locations) every 2,000 hours or every 3 to 6
months, whichever is more frequent.
Refer motor manufacturer’s instructions manual for frequency
of lubrication and correct amount of lubricant.
SPLIT COUPLING
Power is transmitted from motor shaft to the pump shaft
through a split coupling. The pump shaft does not contain
bearings that need lubrication.

7"
"
Rotating(part(
"
Outboard(part(
(
Inboard(gasket(
(
Impeller(End(
gasket(
(
Stationary(part(
(
Gland(
"
MECHANICAL SEAL
The mechanical seal require flushing which is flushed from
discharge of the pump through a flush line. A throttle bush
isolates the mechanical seal from the liquid in the pump.
Since mechanical seals need a film of liquid between the
sealing faces, pump must not be run unless properly filled
with liquid for intended operation.
A ‘weep’ sound may be heard from Mechanical seals at start-
up. The pump should be made run for approx. 8-10 hours,
which is the break-in period for seal. During this operation the
mechanical seal would ‘seat’ properly.
The 382 SC pumps are supplied with three basic types of seals
1. Seal type 1
2. Seal type 21
3. Seal type 8B2
Mechanical Seal (Type 1 & 21)
FIG.9
Mechanical Seal (Type 8B2)
FIG.10
RECOMMENDED SPARE PARTS LIST:
Although all the components could be procured by the
customer at short interval, however to reduce downtime the
below mentioned components should be kept handy in case
the pump is to be shut down for maintenance. The
components are:
•Mechanical seal
•Wear rings
•Gaskets, O-rings, seals
CONSUMABLES:
Following items are of regular use during preventive &
accidental maintenance and must be kept in stock by the
customer.
•Lubricants
•Cleaning materials
•Touch up coating
REQUIRED TOOLS AND FIXTURES:
Pump assembly and disassembly can be performed by using
standard hand tools available in market. For quick reference,
tools required for disassembly of various pump components
are mentioned below:
FOR PUMPS (10x10x14, 10x10x19, 12x12x14, 12x12x18)
Hardware
Location
Wrench size &
type
(in inches)
Hex Bolt
Motor Bracket - motor
mounting flange side
15/16 open end
wrench
Heavy
Hex Nut,
Hex bolt
Motor Bracket -motor
mounting flange side,
Motor Bracket register
flange
1-1/8 open end
wrench
Hex Bolt
Coupling guard & motor
bracket
1/2 open end
wrench
Allen Bolt
Coupling
1/2 Allen key
Heavy
Hex Nut
Coupling
7/8 open end
wrench & 3/8
socket head
wrench
Hex screw
/bolt
Gland & gland Jacking,
Gland for external
mechanical seal
3/4 open end
wrench
NPSF
plug
Suction & Discharge
pressure gauge, Air vent
& Drain, Recirculation
relief
9/16 open end
wrench
Set screw
Coupling
1/4 Allen key
Retainer
ring
Pump shaft
External retainer
ring pliers
FOR PUMPS (14x14x15, 14x14x18)
Hardware
Location
Wrench size &
type

8"
"
(in inches)
Hex Bolt
Motor Bracket -
motor mounting
flange side
1-1/8 open end
wrench
Heavy Hex Nut,
Hex bolt
Motor Bracket -
motor mounting
flange side, Motor
Bracket register
flange
1-1/4 open end
wrench
Hex Bolt
Coupling guard &
motor bracket
1/2 open end
wrench
Allen Bolt
Coupling
1/2 Allen key
Heavy Hex Nut
Coupling
1-1/16 socket
head wrench
Hex screw /bolt
Gland & gland
Jacking, Gland for
external
mechanical seal
3/4 open end
wrench
NPSF plug
Suction &
Discharge
pressure gauge,
Air vent & Drain,
Recirculation
relief
9/16 open end
wrench
Set screw
Coupling
3/8 Allen key
Retainer ring
Pump shaft
External retainer
ring pliers
In addition to the above mentioned tools some additional
equipment’s & fixtures may be required which are mentioned
below:
•Lifting devices (crane, hoist, lifting chains or straps)
•Impeller puller (to remove pressed-on impeller from
shaft)
•Torch (to heat parts to aid in removal)
•Die grinder (to cut out wear rings or sleeves, if
needed)
•Work table or fixture for holding pump
•Measuring equipment (feeler gauges, dial indicator,
etc.)
FASTENER TORQUES AND SEQUENCE
Proper tightening of bolting is very important. Torque values
will vary depending on the size and grade of bolting used.
Torque values for coupling bolts and grub screws and
sequence of their tightening are mentioned in the following
section for replacement procedure of mechanical seals.
REPAIRS
READ AND UNDERSTAND ALL SAFETY WARNINGS
AT THE BEGINNING OF THE MANUAL BEFORE
BEGINNING INSTALLATION OR ANY REPAIR
WORK
This repairs section is broken into two parts. The first part
covers the replacement of the mechanical seal. The second
part covers complete pump disassembly. Refer to the
exploded pump diagram (FIG.32,33,34) for Item numbers.
MECHANICAL SEAL REPLACEMENT
•SEAL REPLACEMENT MODELS
(Models 1.5x1.5x9B, 2.5x2.5x7, 2.5x2.5x9, 2x2x12, 2x2x7,
2x2x9A/B/C, 3x3x12, 3x3x7A/B, 3x3x9A/B, 3x4x9, 4x4x11,
4x4x12, 4x4x7A/B, 4x4x9A/B, 4x5x9, 5x5x11, 5x5x12,
5x5x9, 6x6x11, 6x6x12, 6x6x9, 8x8x11, 8x8x12, 8x8x15 and
10x10x15)
FIG.10
1. Insure the electrical power is locked out, the system
pressure has been lowered and temperature of the unit is
at a safe level.
2. Isolate the pump from the system by closing the valves
that should be located on the suction and discharge side
of the pump. Loosen one of the pipe plugs (#4) and drain
the pump.
3. Remove the coupling guards (#17) by removing the four
(per side) retaining bolts (#4). Loosen the feral nuts on
the tubing connectors (#1) and remove the gland flushing
tubing (#3).
4. Remove the four gland bolts (#55) and utilizing the two
wing nuts (#52) jack the seal gland (#44) upward until
the top surface of the seal gland is in firm contact with
the bottom of the retaining ring (#41A). With the wing
nuts finger tight against the gland the weight of the shaft
(#40) and impeller (#11) can now be supported by the
5. Remove the six socket head coupling bolts (#48) along
with the nuts (#50) and lock washer (#49). The two
coupling halves (#45) can now be pulled away from the
shaft.

9"
"
6. Remove the two annular (round) keys (#46 & #47) as
well as the two linear (square) keys (#53 & #54).
7. Carefully lower the shaft impeller assembly by backing
off on the two gland supporting wing nuts until the face
of the impeller rests inside the casing
8. Remove the snap ring (#41A) from the shaft.
9. The gland (with the stationary seat of the mechanical seal
pressed internally) can be removed through the gap
present between the pump shaft and the motor shaft.
10. Pry the old mechanical seal rotating head (#27) up and
off the pump shaft. Remove the stationary seat of the
mechanical seal from the gland. Remove the O-Ring
gasket (#43) from the groove on the bottom of the gland.
Clean all surfaces, checking for nicks and sharp edges
that may damage the elastomers on the mechanical seal
or the gland
If the pump is to be fully disassembled stop at this point
and proceed to Step 1 under the section titles “Complete
Pump Disassembly”
11. To replace the mechanical seal, lubricate the
stationary seat bore in the gland with soapy water
mixture and press in the seat insuring it is flat in the
bore. Replace the gland O-ring, holding in the
groove with a small amount of non-hardening
silicon or grease.
12. Lubricate the pump shaft with a soapy water and
first place the spring retainer over the shaft,
followed by the spring and finally the rotating head
of the seal.
13. Place the gland down on the shaft and insure the
two jacking holes on the side of the gland are
engages with threaded rod and wing nuts. Replace
the external retaining ring making sure it is in the
grove of the shaft.
14. Using 1/2 of the split coupling as a guide, (the thin
groove cut into the top of the coupling identifies the
motor side of the coupling), utilize the wing nuts to
raise the shaft (with impeller) upward to align the
annular grooves on the coupling with the grooves on
the shaft. Place one half of the motor annular key in
the motor shaft groove. Place the linear motor key
in the motor shaft. Place the linear pump key in the
pump shaft and align the two linear keys so the
coupling half fits both motor and pump shaft. Slide
in the pump shaft annular key half (additional
adjustment of the wing nuts maybe necessary as the
key to groove fit is close). Place the second pump
shaft and motor annular keys in their respective
grooves and rotate the key 90 degrees so they stay
in place. Place the other half of the split coupling
onto the shafts. Replace the 6 socket head cap
screws (3 sockets facing in on one side and 3 facing
out on the other side requiring rotating the shaft 180
degrees to tighten the cap screws) and add lock
washers and nuts. Adjust the socket head cap screws
so the gap between the coupling halves is even.
Tighten the socket head cap screws in a crosswise
pattern to the torque listed in the table below.
SPLIT COUPLING BOLT TIGHTENING TORQUE
Bolt Size
Hex Socket Size
Torque (ft-lbs)
3/8 inch
5/16
35
1/2 inch
3/8
90
15. Lower the gland by utilizing the wing nuts, replace
the four gland bolts and tighten the gland down
evenly. After the gland is tightened down, tighten
the two wing nuts to the underside of the gland
(holding them stationary and preventing them from
vibrating).
16. Reinstall the flush tubing. Insure the coupling
rotates freely with no dragging or binding. Replace
the coupling guards and refer to the beginning of the
manual for startup instructions.
•SEAL REPLACEMENT MODELS
(Models 10x10x19, 10x10x14, 12x12x14, 12x12x18,
14x14x15 and 14x14x18 only)
FIG. 11
Refer the Tools mentioned in the required tools and
fixtures for pump disassembly
REPLACING THE MECHANICAL SEAL
1. Ensure the electrical power is locked out, the system
pressure has been lowered and temperature of the unit is
at a safe level.
2. Isolate the pump from the system by closing the valves
that should be located on the suction and discharge side
of the pump. Loosen one of the pipe plugs (#4) and drain
the pump.
Drain plug to
be removed

10"
"
FIG. 12
3. Remove the coupling guards (#17) by removing the four
(per side) cap screws (#18). Loosen the ferrule nuts on
the tubing connectors (#1) and remove the gland flushing
tubing (#3).
FIG. 13
If 8b2 Mechanical seal has to be replaced stop at this point
and proceed to step 28
FOR TYPE 21 MECHANICAL SEAL
4. Loosen the four gland bolts (#55) and utilize the two
bolts out of four gland bolts for jacking, keeping the
other two engaged with the gland to restrict the motion of
the gland about shaft axis.
FIG. 14
5. Jack the seal gland (#44) upward until the top surface of
the seal gland makes a firm contact with the bottom of
the retaining ring (#41A).
6. With the bolts (#55) tightened against the gland, the
weight of the shaft (#40) and impeller (#11) can now be
supported by the gland and the split coupling (#45) can
be removed without the shaft dropping.
7. Remove the four coupling set screws (#20) followed by
six/four socket head coupling bolts (#48) along with the
nuts (#50) and spring washer (#49). The two coupling
halves (#45) can now be pulled away from the shaft.
FIG. 15
8. Remove the two linear (square) keys (#53, #54).
FIG. 16
9. Carefully lower the shaft impeller assembly by backing
off on the two gland supporting bolts until the face of the
impeller rests inside the casing.
10. Remove the retaining ring (#41A) from the shaft.
11. Remove two remaining gland bolts (#55) which are
engaged with seal plate (#35).
12. The gland (#44) (with the stationary seat of the
mechanical seal pressed internally) can now be removed
through the gap present between the pump shaft and the
motor shaft.
FIG. 17
13. Pry the old mechanical seal (#27) rotating head, spring &
spring retainer up and off the pump shaft.
14. Remove the stationary part of the mechanical seal from
the gland. Remove the O-Ring gasket (#43) from the
groove on the bottom of the gland.
FIG. 18
If the pump is to be fully disassembled proceed to Step 1
under the section titled “COMPLETE PUMP
DISASSEMBLY” otherwise continue for installation of
the Mechanical Seal.
Move Gland bolts
to these holes to
use as Jacking bolts
Gland bolts
Coupling guard
removed
Stationary part
Set screws
(x4)
Coupling Bolts
(x6/4)
Motor key
Pump key
Gland removed
through gap
between shafts
O-ring gasket
Gland

11"
"
15. Clean all surfaces of the gland, checking for nicks and
sharp edges that may damage the elastomers on the
mechanical seal or the gland.
16. To replace the mechanical seal, lubricate the stationary
seat bore in the gland with soapy water mixture and press
in the seat ensuring it is flat in the bore.
17. Replace the gland O-ring, holding in the groove with a
small amount of non-hardening silicon or grease.
18. Lubricate the pump shaft with soapy water. Place the
spring retainer over the shaft, followed by the spring and
finally the rotating head of the seal until it rests over
lower retaining ring.
FIG. 19
19. Place the gland down on the seal plate and ensure the
two jacking bolts are engaged.
20. Engage the remaining two gland bolts loosely with the
gland and seal plate to restrict the motion of the gland
about shaft axis.
21. Replace the external retaining ring making sure it is in
the groove of the shaft.
22. Using half of the split coupling as a guide, (the tapping
for setscrews identifies the motor side of the coupling)
utilize the jacking bolts to raise the shaft (with impeller)
upward until the step inside the coupling touches motor
shaft end face so that pre specified distance between
pump shaft & motor shaft is maintained.
FIG. 20
23. Place the linear motor key in the motor shaft. Place the
linear pump key in the pump shaft and align the two
linear keys so that the other coupling half fits over
both motor and pump shaft.
24. Place the other half of the split coupling onto the shafts.
Replace the six/four socket head cap screws (three/two
sockets facing in on one side and three/two facing out on
the other side requiring rotating the shaft 180 degrees to
tighten the cap screws) and add spring washers and nuts.
Adjust the socket head cap screws to maintain even gap
between coupling halves. Tighten the socket head cap
screws in a crosswise pattern. The minimum tightening
torque to be maintained is 120 lbf-ft but should not
exceed 130lbf-ft.Make sure that all the bolts are
tightened to same torque.
FIG. 21
•Tighten to the required torque in three steps as
follows:
a) First time – Tighten to 50% of the specified
torque
b) Second time – Tighten to 75% of the specified
torque
c) Third time – Tighten to 100% of the specified
torque
25. Tighten grub screws to fix the axial location of coupling
(in a crossing pattern). The minimum tightening torque
to be maintained is 30 lbf-ft but should not exceed 65lbf-
ft. Make sure that all the bolts are tightened to same
torque.
•Tighten to the required torque in three steps as
follows
a) First time – Tighten to 50% of the specified
torque
b) Second time – Tighten to 75% of the specified
torque
c) Third time – Tighten to 100% of the specified
torque
26. Lower the gland by disengaging the jacking bolts and
tighten the gland to the seal plate using the four gland
bolts.
27. Reinstall the flush tubing. Ensure that impeller and motor
rotate freely with no dragging or binding. Replace the
coupling guards and refer to the beginning of the manual
for startup instructions.
FOR TYPE 8B2 MECHANICAL SEAL
28. Place studs (#51) with wing nuts (#52) on the seal gland
(#44) for jacking. Engage the jacking plate (#10)
(reference required tools section) with studs so that it
Rotating head
Spring
Spring retainer
Motor shaft
Pump shaft
Coupling step
Replace
Coupling Bolts
(x6/4)

12"
"
rests on the wing nuts. Tighten the wing nuts on studs in
such a way that jacking plate makes a firm contact with
the bottom of the retaining ring (41A).
FIG. 22
29. Remove set screws (#48) from rotating part of the seal
and move the rotating part slightly upwards so that it
does not hinder shaft (#40) axial movement when the
jacking plate (#10) is backed off. Failure to do so could
cause damage to the stationary seat when the impeller
(#11) is lowered.
FIG. 23
30. With the wing nuts tight against the jacking plate, the
weight of the shaft (#40) and impeller(#11) can now be
supported by the gland (#44) and the split coupling (#45)
can be removed without the shaft dropping.
31. Remove the four coupling set screws (#20) followed by
six/four socket head coupling bolts (#48) along with the
nuts (#50) and spring washer #49). The two coupling
halves (#45) can now be pulled away from the shaft.
32. Remove the two linear (square) keys (#53, #54).
33. Carefully lower the shaft impeller assembly by backing
off on the two gland plate supporting wing nuts until the
face of the impeller rests inside the casing.
34. Remove the retaining ring (#41A) from the shaft.
35. Pry the old mechanical seal (#27) rotating part off the
pump shaft.
36. Remove the jacking plate (#10), wing nuts (#52), and
studs (#51).
37. Inspect the surface of the stationary seat. If damaged,
remove gland bolts (#55), and remove gland (#44)
through the gap present between the pump shaft and the
motor shaft.
FIG. 24
38. Remove the stationary part along with the inboard and
outboard stationary gasket off the pump shaft.
If the pump is to be fully disassembled proceed to
Step 1 under the section titles “COMPLETE PUMP
DISASSEMBLY”, otherwise continue for installation
of the 8B2 Seal.
39. Clean all surfaces of the gland, checking for nicks and
sharp edges that may damage the elastomers on the
mechanical seal or the gland.
40. Remove the mechanical seal from its packaging, inspect
for any damage, and keep seal faces clean and free from
contaminants during installation.
DO NOT GREASE OR LUBRICATE SEAL FACES
41. Use soap, petro gel, glycerin, etc. for lubrication for ease
of assembly.
42. If removed, install the inboard stationary gasket and the
stationary part of seal on to the shaft. Then place the
outboard stationary gasket over the stationary part.
43. Next place the seal gland over the stationary part and
gaskets, making sure that all the gaskets have been
installed properly before securing the gland bolts.
44. Now install the rotating part of the seal over the shaft. Do
not tighten seal set screws at this time.
Impeller end
FIG. 25
45. Replace the external retaining ring making sure it is in
the groove of the shaft.
46. With the help of studs and wing nuts, engage the jacking
plate so that it touches the lower face of the retaining
ring.
47. Using half of the split coupling as a guide, (the tapping
for setscrews identifies the motor side of the coupling),
Rotating part
Gland
Outboard gasket
Stationary part
Inboard gasket
Jacking plate in
contact with
retaining ring
Set screws
removed
Gland removed
through gap
between shafts

13"
"
utilize the wing nuts to raise the shaft (with impeller)
upward until the step inside the coupling touches motor
shaft end face so that pre specified distance between
pump shaft & motor shaft is maintained.
FIG. 26
48. Place the linear motor key in the motor shaft. Place the
linear pump key in the pump shaft and align the two
linear keys so that the other coupling half fits over motor
and pump shaft.
49. Place the other half of the split coupling onto the shafts.
Replace the six/four socket head cap screws (three/two
sockets facing in on one side and three/two facing out on
the other side requiring rotating the shaft 180 degrees to
tighten the cap screws) and add spring washers and nuts.
Adjust the socket head cap screws to maintain even gap
between the coupling halves.
FIG. 27
50. Tighten the socket head cap screws in a crosswise
pattern. The minimum tightening torque to be maintained
is 120lbf-ft but should not exceed 130lbf-ft. Make sure
that all the bolts are tightened to same torque.
•Tighten to the required torque in three steps as
follows:
a) First time – Tighten to 50% of the specified
torque
b) Second time – Tighten to 75% of the specified
torque
c) Third time – Tighten to 100% of the specified
torque
51. Tighten set screws to fix the location of coupling (in a
crossing pattern). The minimum tightening torque to be
maintained is 30 lbf-ft but should not exceed 65lbf-ft.
Make sure that all the bolts are tightened to same torque.
•Tighten to the required torque in three steps as
follows:
a) First time – Tighten to 50% of the specified
torque
b) Second time – Tighten to 75% of the specified
torque
c) Third time – Tighten to 100% of the specified
torque
52. Fasten the set screws of rotating part of the seal. After
maintaining the compression recommended by the seal
manufacturer, tighten the set screws to a torque as
recommended by the seal manufacturer.
53. Lower the jacking plate by utilizing wing nuts, replace
the four gland bolts and tighten the gland to the seal
plate.
54. Reinstall the flush tubing. Ensure that the coupling
rotates freely with no dragging or binding. Replace the
coupling guards and refer to the beginning of the manual
for startup instructions.
COMPLETE PUMP DISASSEMBLY
•PUMP DISASSEMBLY MODELS
(1.5x1.5x9B, 2.5x2.5x7, 2.5x2.5x9, 2x2x12, 2x2x7,
2x2x9A/B/C, 3x3x12, 3x3x7A/B, 3x3x9A/B, 3x4x9, 4x4x11,
4x4x12, 4x4x7A/B, 4x4x9A/B, 4x5x9, 5x5x11, 5x5x12,
5x5x9, 6x6x11, 6x6x12, 6x6x9, 8x8x11, 8x8x12, 8x8x15,
10x10x15)
1. With the coupling, gland and mechanical seal removed,
remove the bolts (#26) and nuts (#31) holding the motor
to the bracket (#35). Pull the motor up and away utilizing
suitable lifting equipment.
2. Remove the snap ring (#41B) from the shaft (#40).
3. Remove the cap screws (#27) holding the bracket (#35)
to the casing (#6). Utilizing suitable lifting equipment lift
the bracket straight up and off the casing and over the
shaft. Take care when lifting to insure a straight lift, the
carbon bushing (#42) may be damaged by uneven lifting.
4. Remove the casing gasket (#8) from the casing and
bracket.
5. Remove wear rings (#7, #16) from the casing and bracket.
6. Press out the carbon bushing (#42) from the bore inside
the bracket (at the base of the packing box). During
reassembly the new bushing must be pressed in evenly or
it can crack.
7. Pump reassembly is performed in the reverse order.
•PUMP DISASSEMBLY MODELS
(Models 10x10x19, 10x10x14, 12x12x14, 12x12x18,
14x14x15 and 14x14x18 only)
1. With the coupling (#45), gland (#44) and mechanical
seal (#27) removed, remove the bolts (#32), nuts (#31)
and washers (#49) holding the motor to the bracket.
Motor shaft
Coupling step
Pump shaft
Replace
Coupling Bolts
(x6/4)

14"
"
2. Pull the motor up and away utilizing suitable lifting
equipment.
3. Remove the lower snap ring ((#41B) from the pump
shaft.
4. Remove the cap screws (#5) and washers (#9A) holding
the bracket (#35) to the seal plate (#35). Utilizing
suitable lifting equipment lift the bracket straight up.
5. Remove the cap screws (#5) holding the seal plate to the
casing (#6) and by utilizing two bolts jack the seal plate
upwards. Utilizing suitable lifting equipment lift the seal
plate straight up. Take care when lifting to ensure a
straight lift.
FIG. 28
FIG. 29
6. Remove carbon bushing (#42) from the bore inside the
seal plate. During reassembly the new bushing must be
pressed in evenly or it can crack.
7. Remove O-rings/gaskets (#10) from the seal plate
FIG. 30
8. Lift the rotating assembly from the casing.
9. Unscrew impeller screw (#9) and remove impeller seal
(#9C).
10. Slide impeller (#11) and impeller key (#12) from shaft.
11. Remove spire bush (#13) from the impeller bore using a
small puller. During reassembly the new bushing must be
pressed evenly or it can crack.
12. Now remove the impeller washer (#9A).
13. Remove wear rings (#7) & (#16) from the casing and
seal plate with the help of puller.
FIG. 31
14. Remove sleeve (#25) from casing spire with the help of a
puller.
15. Remove nameplate (#34) and screws (#33) only if
replacement is needed.
INSPECTION
Once the pumping unit is disassembled, component parts
should be inspected to determine their condition. Worn parts
should be reconditioned to like-new condition or replaced
ASSEMBLY
Pump reassembly is performed in the reverse order. During
the assembly procedure, take care not to damage any of the
component parts and avoid contamination (dirt, debris,
moisture, etc.) to the unit
Jacking bolts
engaged
Rotating assembly
rests on casing
Throttle bushing
O-ring/gaskets
Wear ring to
be removed

15"
"
MODEL 382A SC
P-Base-Motor
(1.5x1.5x9B, 2.5x2.5x7, 2.5x2.5x9, 2x2x12, 2x2x7, 2x2x9A/B/C, 3x3x12, 3x3x7A/B, 3x3x9A/B, 3x4x9, 4x4x11, 4x4x12,
4x4x7A/B, 4x4x9A/B, 4x5x9, 5x5x11, 5x5x12, 5x5x9, 6x6x11, 6x6x12, 6x6x9, 8x8x11, 8x8x12, 8x8x15, 10x10x15)
"
"
FIG. 32

16"
"
MODEL 382B SC VERTICAL IN-LINE PUMP
TC-Motor
(Model 10x10x19)
FIG.33

17"
"
MODEL 382B SC VERTICAL IN-LINE PUMP
TC-Motor
(Models 10x10x14, 12x12x14, 12x12x18, 14x14x15 and 14x14x18)
FIG. 34

18"
"
PART LIST FOR 382 SC VERTICAL INLINE PUMPS
Reference: FIG.32,33,34 (Exploded Views)
ITEM NO.
DESCRIPTION
1
COMP. ELBOW
2
COMP. CONNECTOR
3
TUBING
4
PIPE PLUG
4A
PIPE PLUG
5
CAP SCREW
5A
WASHER
6
CASING
7
WEAR RING
8
GASKET
9
IMPELLER SCREW
9A
WASHER
9C
CAP SCREW SEAL
10
JACKING PLATE
11
IMPELLER
12
IMPELLER KEY
13
IMPELLER BUSH
16
WEAR RING
17
COUPLING GUARD
18
GUARD MOUNTING SCREW
20
SET SCREW
23A
WEAR RING
23B
WEAR RING
25
SPIRE SLEEVE
27
SEAL
31
HEX NUT (MOTOR SIDE)
32
CAP SCREW
32A
LOCK WASHER (MOTOR SIDE)
33
SCREW
34
NAME PLATE
35
BRACKET
35A
SEAL PLATE
39
CAP SCREW
40
SHAFT
41
RETAINING RING
42
THROTTLE BUSHING
43
GLAND O-RING
44
GLAND
45
SPLIT COUPLING
48
CAP SCREW
49
LOCK WASHER
50
HEX NUT
51
STUD
52
WING NUT
53
PUMP COUPLING KEY
54
MOTOR COUPLING KEY
55
GLAND CAP SCREW
55A
GLAND WASHER
73
SPOOL BASE

19"
"
WARRANTY
Seller warrants equipment (and its component parts) of its own manufacture against defects in materials and workmanship under normal use
and service for one (1) year from the date of installation or start-up, or for eighteen (18) months after the date of shipment, whichever occurs
first. Seller does not warrant accessories or components that are not manufactured by Seller; however, to the extent possible, Seller agrees to
assign to Buyer its rights under the original manufacturer's warranty, without recourse to Seller. Buyer must give Seller notice in writing of
any alleged defect covered by this warranty (together with all identifying details, including the serial number, the type of equipment, and the
date of purchase) within thirty (30) days of the discovery of such defect during the warranty period. No claim made more than 30 days after
the expiration of the warranty period shall be valid. Guarantees of performance and warranties are based on the use of original equipment
manufactured (OEM) replacement parts. Seller assumes no responsibility or liability if alterations, non-authorized design modifications
and/or non-OEM replacement parts are incorporated If requested by Seller, any equipment (or its component parts) must be promptly
returned to Seller prior to any attempted repair, or sent to an authorized service station designated by Seller, and Buyer shall prepay all
shipping expenses. Seller shall not be liable for any loss or damage to goods in transit, nor will any warranty claim be valid unless the
returned goods are received intact and undamaged as a result of shipment. Repaired or replaced material returned to customer will be
shipped F.O.B., Seller's factory. Seller will not give Buyer credit for parts or equipment returned to Seller, and will not accept delivery of
any such parts or equipment, unless Buyer has obtained Seller's approval in writing. The warranty extends to repaired or replaced parts of
Seller's manufacture for ninety (90) days or for the remainder of the original warranty period applicable to the equipment or parts being
repaired or replaced, whichever is greater. This warranty applies to the repaired or replaced part and is not extended to the product or any
other component of the product being repaired. Repair parts of its own manufacture sold after the original warranty period are warranted for
a period of one (1) year from shipment against defects in materials and workmanship under normal use and service. This warranty applies to
the replacement part only and is not extended to the product or any other component of the product being repaired. Seller may substitute
new equipment or improve part(s) of any equipment judged defective without further liability. All repairs or services performed by Seller,
which are not covered by this warranty, will be charged in accordance with Seller's standard prices then in effect.
THIS WARRANTY IS THE SOLE WARRANTY OF SELLER AND SELLER HEREBY EXPRESSLY DISCLAIMS AND BUYER
WAIVES ALL OTHER WARRANTIES EXPRESSED, IMPLIED IN LAW OR IMPLIED IN FACT, INCLUDING ANY WARRANTIES
OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Seller's sole obligation under this warranty shall be, at its
option, to repair or replace any equipment (or its component parts) which has a defect covered by this warranty, or to refund the purchase
p
rice of such equipment or part. Under the terms of this warranty, Seller shall not be liable for (a) consequential, collateral, special or
liquidated losses or damages; (b) equipment conditions caused by normal wear and tear, abnormal conditions of use, accident, neglect, or
misuse of said equipment; (c) the expense of, and loss or damage caused by, repairs or alterations made by anyone other than the Seller; (d)
damage caused by abrasive materials, chemicals, scale deposits, corrosion, lightning, improper voltage, mishandling, or other similar
conditions; (e) any loss, damage, or expense relating to or resulting from installation, removal or reinstallation of equipment; (f) any labor
costs or charges incurred in repairing or replacing defective equipment or parts, including the cost of reinstalling parts that are repaired or
replaced by Seller; (g) any expense of shipment of equipment or repaired or replacement parts; or (h) any other loss, damage or expense of
any nature.
The above warranty shall not apply to any equipment which may be separately covered by any alternate or special warranties.
PERFORMANCE: In the absence of Certified Pump Performance Tests, equipment performance is not warranted or guaranteed.
Performance curves and other information submitted to Buyer are approximate and no warranty or guarantee shall be deemed to arise as a
result of such submittal. All testing shall be done in accordance with Seller's standard policy under Hydraulic Institute procedures.
LIABILITY LIMITATIONS: Under no circumstances shall the Seller have any liability under the Order or otherwise for liquidated
damages or for collateral, consequential or special damages or for loss of profits, or for actual losses or for loss of production or progress of
construction, regardless of the cause of such damages or losses. In any event, Seller's aggregate total liability under the Order or otherwise
shall not exceed the contract price.
ACTS OF GOD: Seller shall in no event be liable for delays in delivery of the equipment or other failures to perform caused by fires, acts of
God, strikes, labor difficulties, acts of governmental or military authorities, delays in transportation or procuring materials, or causes of any
kind beyond Seller's control.
COMPLIANCE WITH LAW: Seller agrees to comply with all United States laws and regulations applicable to the manufacturing of the
subject equipment. Such compliance shall include: The Fair Labor Standards Acts of 1938, as amended; Equal Employment Opportunity
clauses of Executive Order 11246, as amended; Occupational Safety and Health Act of 1970 and the standards promulgated thereunder, if
applicable. Since compliance with the various Federal, State, and Local laws and regulations concerning occupational health and safety,
p
ollution or local codes are affected by the use, installation and operation of the equipment and other matters over which Seller has no
control, Seller assumes no responsibility for compliance with those laws and regulations, whether by way of indemnity, warranty, or
otherwise. It is incumbent upon the Buyer to specify equipment which complies with local codes and ordinances.
800 Airport Road
North Aurora, Illinois 60542
630-859-7000
www.aurorapump.com