Pentair 382A SC Operating instructions

NOTE! To the installer: Please make sure you provide this manual to the owner of the equipment or to the responsible
party who maintains the system.
SERIES 382A-SC
SINGLE STAGE VERTICAL
INLINE SPLIT COUPLED
CENTRIFUGAL PUMPS
INSTRUCTION AND REPAIR MANUAL
Part # A-03-283 | © 2012 Pentair Ltd. | 12/01/12

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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.
INSTRUCTION AND REPAIR MANUAL
SERIES 382A-SC 6
SECTION 6ITEM 382A-SC
DATED DECEMBER 2005
APPLICATIONS:
The 382A-SC Series is a superior commercial in-line pump based on the
Aurora Pump 340/380 series which has been manufactured and field
tested under the severest demands of high temperature condensate
service and boiler feed applications for over 50 years. Pumping
applications for the 382A-SC include: hot or chilled water circulation,
pressure booster systems, and cooling towers for office buildings,
hotels, hopitals, universities and warehouses.
OPERATIONAL LIMITS
Maximum Operating Pressure: 175 psi
Maximum Operating Temperature: 225°F (107°C)
ATTENTION: SAFETY WARNINGS:
Read and understand all warnings before installation or servicing pump.
ELECTRICAL SAFETY:
HIGH TEMPERATURE SAFETY:
HIGH PRESSURE SAFETY:
INSTALLATOIN:
The 382A-SC pump must be installed vertically. Install isolating valves
on each side of pump so pump maintenance can be performed with out
draining the system. Special mounting requirements may be required if
the pump is to be mounted near a noise or vibration sensitive area.
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 water into the pump.
Suction and discharge piping must be in line. Do not use pump casing to
force the alignment of the piping. Properly support the piping to provide
a rigid support for the pump. Tighten pump flanges evenly to prevent
flange cocking and liquid leakage. Do not reuse old gaskets.
ELECTRICAL CONNECTIONS:
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: 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: 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: High Pressure Hazard
The pump is rated at a maximum of 175 psi (155 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.
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: 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: 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.
INSTRUCTION AND REPAIR MANUAL
SERIES 382A-SC 6
SECTION 6ITEM 382A-SC
DATED DECEMBER 2005
APPLICATIONS:
The 382A-SC Series is a superior commercial in-line pump based on the
Aurora Pump 340/380 series which has been manufactured and field
tested under the severest demands of high temperature condensate
service and boiler feed applications for over 50 years. Pumping
applications for the 382A-SC include: hot or chilled water circulation,
pressure booster systems, and cooling towers for office buildings,
hotels, hopitals, universities and warehouses.
OPERATIONAL LIMITS
Maximum Operating Pressure: 175 psi
Maximum Operating Temperature: 225°F (107°C)
ATTENTION: SAFETY WARNINGS:
Read and understand all warnings before installation or servicing pump.
ELECTRICAL SAFETY:
HIGH TEMPERATURE SAFETY:
HIGH PRESSURE SAFETY:
INSTALLATOIN:
The 382A-SC pump must be installed vertically. Install isolating valves
on each side of pump so pump maintenance can be performed with out
draining the system. Special mounting requirements may be required if
the pump is to be mounted near a noise or vibration sensitive area.
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 water into the pump.
Suction and discharge piping must be in line. Do not use pump casing to
force the alignment of the piping. Properly support the piping to provide
a rigid support for the pump. Tighten pump flanges evenly to prevent
flange cocking and liquid leakage. Do not reuse old gaskets.
ELECTRICAL CONNECTIONS:
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: 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: 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: High Pressure Hazard
The pump is rated at a maximum of 175 psi (155 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.
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: 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: 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.
INSTRUCTION AND REPAIR MANUAL
SERIES 382A-SC 6
SECTION 6ITEM 382A-SC
DATED DECEMBER 2005
APPLICATIONS:
The 382A-SC Series is a superior commercial in-line pump based on the
Aurora Pump 340/380 series which has been manufactured and field
tested under the severest demands of high temperature condensate
service and boiler feed applications for over 50 years. Pumping
applications for the 382A-SC include: hot or chilled water circulation,
pressure booster systems, and cooling towers for office buildings,
hotels, hopitals, universities and warehouses.
OPERATIONAL LIMITS
Maximum Operating Pressure: 175 psi
Maximum Operating Temperature: 225°F (107°C)
ATTENTION: SAFETY WARNINGS:
Read and understand all warnings before installation or servicing pump.
ELECTRICAL SAFETY:
HIGH TEMPERATURE SAFETY:
HIGH PRESSURE SAFETY:
INSTALLATOIN:
The 382A-SC pump must be installed vertically. Install isolating valves
on each side of pump so pump maintenance can be performed with out
draining the system. Special mounting requirements may be required if
the pump is to be mounted near a noise or vibration sensitive area.
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 water into the pump.
Suction and discharge piping must be in line. Do not use pump casing to
force the alignment of the piping. Properly support the piping to provide
a rigid support for the pump. Tighten pump flanges evenly to prevent
flange cocking and liquid leakage. Do not reuse old gaskets.
ELECTRICAL CONNECTIONS:
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: 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: 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: High Pressure Hazard
The pump is rated at a maximum of 175 psi (155 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.
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: 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: 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.

MODEL 382A-SC
2
START UP:
The pump must be filled with water before start up or the mechanical
seal will not be lubricated and will fail. Loosen vent plug on pump
casing to insure all air is vented from casing and the casing is filled with
water.
Avoid all situations where pipe stain may be transferred to the pump
casing. Expansion fittings and pipe hangers located close to the pump
may be required. Do not force the piping to match the pump suction and
discharge flanges. Re-cut the piping to avoing this situation.
All electrical connections are to be completed by a qualified electrician.
Insure properly sized overload protection is installed.
OPERATING:
Insure the system is filled with water and vented prior to pump start up.
The pump rotation is clockwise when viewed from the back of the
motor. Do not run the pump dry or the mechincal seal will be destroyed.
MAINTENANCE AND SERVICE TO THE PUMP:
The 382A-SC pump requires no regular service other then periodic
inspection and ocasional cleaning. A periodic inspection must be
performed looking for seal leaks indicating the mechanical seal is worn
out and any unusual noise or vibration that will indicate other pump
components require service/repair. The motor may require lubrication;
the motor manufacturer’s recommendation should be followed.
REPAIRS:
READ AND UNDERSTAND ALL SAFETY WARNINGS AT THE
BEGINNING OF THE MANUAL BEFORE BEGINNING
INSTALLATION OR ANY REPAIR WORK.
This repair manual is broken into two sections. The first section covers
the replacement of the mechanical seal. The second section covers
complete pump disassembly. Refer to the exploded pump diagram for
item numbers.
SECTION 1
Replacing the Mechanical Seal
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
gland and the split coupling can be removed with out the shaft
dropping.
5.
6.
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.
7. Remove the two annular (round) keys (#46 & #47) as well as the
two linear (square) keys (#53 & #54).
8. 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.
9. Remove the snap ring (#41A) from the shaft.
10. 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.
11. 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 disassebled stop at this point and proceed
to Step 1 under the section titles “Complete Pump Disassebly”
12. 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.
13. 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.
14. 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.
15. Replace the external retaining ring making sure it is in the grove of
the shaft.
16. 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 may
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.

MODEL 382A-SC
3
be 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.
17. 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 under side of the
gland (holding them stationary and preventing them from
vibrating).
18. 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 start up instructions.
COMPLETE PUMP DISASSEMBLY:
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.
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

MODEL 382A-SC
4
5
40
42
18
12
4
6
7
4
32
31
4
9
9C 9A
9B
11
16
17
8
51
2
3
52
3
44
27
4
34
33
35
43
1
41A
41B
54
46
45
50
49
53
48
47
55

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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
price 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,
pollution 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