Pentair AURORA 382 Betriebsanleitung

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.

INSTRUCTION AND REPAIR MANUAL

VERTICAL INLINE

CENTRIFUGAL PUMP

ENGLISH: PAGES 2-8

Instruction and Repair Manual

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.

Models

382

AURORA

APPLICATIONS:

The 382 model is a superior commercial in-line

pump which has been manufactured and field tested

under the severest demands of high temperature

condensate service and boiler feed applications for

many years. Pumping applications 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.

CALIFORNIA PROPOSITION 65 WARNING:

This product and related accessories

contain chemicals known to the State of California

to cause cancer, birth defects or other reproductive

harm.

ELECTRICAL SAFETY:

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.

Electrical Overload Hazard

Ensure all motors have properly sized overload

protection. Failure to follow these instructions

could result in serious personal injury, death or

property damage.

Sudden Start-Up Hazard

Disconnect and lock out power source before

servicing. Failure to follow these instructions could

result in serious personal injury, death or property

damage.

HIGH TEMPERATURE SAFETY:

Hot Surface Hazard

If pumping hot water, ensure 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.

Spraying Water Hazard

When servicing pump replace all gaskets and seals.

Do not reuse old gaskets or seals. Failure to follow

these instructions could result in serious personal

injury, death or property damage.

HIGH PRESSURE SAFETY:

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.

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.

LOCATION:

The pump should be installed in a clean, heated

and well ventilated area that allows access for

inspection, cleaning and proper maintenance.

Sufficient space should be provided for installation

and removal.

INSTALLATION:

The 1590 and 1590SC pumps 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:

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.

Electrical Overload Hazard

Ensure all motors have properly sized overload

protection. Failure to follow these instructions

could result in serious personal injury, death or

property damage.

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.

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 ensure

all air is vented from casing and the casing is filled

with water.

Hot Surface Hazard

If pumping hot water, ensure 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.

Spraying Water Hazard

When servicing pump, replace all gaskets and seals.

Do not reuse old gaskets or seals. Failure to follow

these instructions could result in serious personal

injury, death or property damage.

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. Recut the piping to

avoing this situation.

All electrical connections are to be completed by a

qualified electrician. Ensure properly sized overload

protection isinstalled.

1. Check that the current supply agrees with

the voltage and frequency of the motor

nameplate.

2. Check that the motor is wired for correct

voltage.

3. Check that thermal overload relays are correct

size and set for operation.

OPERATING:

Ensure 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.

TROUBLESHOOTING:

IF MOTOR FAILS TO START:

1. Wrong voltage, wiring hookup incorrect.

Switches not set.

2. Rotating element may be bound due to clog in

impeller pipe strain.

3. Tripped thermal overload relay or blown fuses.

4. Starter contacts may be shorted or corroded.

Terminal connections may be broken at some

point in the circuit.

LOST PRIME:

1. Suction pressure too low.

2. Leaks in suction piping connections.

3. High level of air entrainment.

LOW OR NO WATER FLOW:

1. Speed may be low; check for low voltage.

2. The impeller may be clogged or damaged or

suction and discharge lines partially clogged.

3. Valves may not be fully open.

4. Pump not primed.

5. Suction pressure may be low.

6. Required discharge pressure may be greater

than originally anticipated.

NOISE OR VIBRATION:

1. Partially clogged impeller resulting in

imbalance.

2. Cavitation, net positive suction head available

is too low.

3. Pump fully primed.

4. Foundation improperly secured or not strong

enough.

5. Piping not anchored securely.

6. Rotating element binding due to damaged

shaft, worn bearings or pipe strain.

MAINTENANCE AND SERVICE TO THE PUMP:

The 382 pumps require no regular service other

than periodic inspection and occasional 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

Fig. B. Casing, Gasket and Wearing

Ring Removed.

Fig. A. Assembled Unit.

indicate other pump components require service/

repair. The motor may require lubrication; the

motor manufacturer’s recommendation should be

followed.

SERVICE:

Your 382 Aurora pump requires no maintenance

other than periodic inspection and occasional

cleaning.

The intent of inspection is to prevent breakdown,

thus obtaining optimum service life. The pump is

lubricated by the liquid being pumped and therefore

does not require periodic lubrication. The motor,

however, may require lubrication, in which case,

the motor manufacturer’s recommendation should

be followed.

REPAIRS

Refer to the exploded pump diagrams for item

numbers.

The pump may be disassembled using the

illustrations and text provided. Although complete

disassembly is covered, it will seldom be necessary

to completely disassemble your Aurora pump.

The illustrations accompanying the disassembly

instructions show the pump at various stages of

disassembly. The illustrations are intended to aid in

the correct identification of the parts mentioned in

the text.

Inspect removed parts at disassembly to determine

their reusability. Cracked castings should never be

reused. Gaskets should be replaced at reassembly

simply as a matter of economy; they are much

less expensive to replace routinely than to replace

as the need occurs. In general it is economical to

return to the manufacturer for repair only to the

motor and motor controller.

DISASSEMBLY:

Disassemble only what is needed to make repairs or

to accomplish inspection. Proceed to disassemble

the pump as follows:

1. Break electrical connections to prevent

any possibility of pump starting during

disassembly.

2. Remove plugs (4) from casing (6) to drain

pump.

3. Remove all relief, cooling, flushing, or drain

lines from the pump, including compression

connections (1 and 2) and tubing (3). Break

suction and discharge connections only if it

is desired to remove casing (6).

4. Remove capscrews (5) and lift pump assembly

from casing (6). Remove gasket (8).

5. Unscrew impeller screw (9) and remove

washer (9A) taking care not to damage gasket

(9B).

6. Slide impeller (11) and impeller key (12) from

shaft, again taking care not to damage gasket

(10) located behind the impeller. Remove

gasket (10).

7. Wearing ring(s) (7 & 16) are pressed into their

housings with an interference fit, and must

be removed with a puller. New ring(s) should

be used for reassembly, since it is likely that

during removal this fit will be lost.

8. Impeller wear rings (optional – 14 and 15) are

pressed on and must be cut off if replacement

is necessary. If they are turned off on a lathe,

take care not to cut into the impeller.

Fig. C. Impeller, O-Ring Removal.

9. Slide sleeve (25) with rotating parts of

mechanical seal (27) from the shaft. The

sleeve should be carefully cleaned to remove

any residue that may be remaining in the seal

area. The rubber in the seal (27) may have

become partially adhered to the sleeve. The

sleeve must also be checked for abrasion or

corrosion that can occur when fluid residue

penetrates between the seal (27) and the

sleeve (25). The sleeve under the seal may

be polished lightly to a 32RMS finish before

reassembly. Do not reuse a pitted sleeve. Pin

(61) may be removed if necessary.

CAUTION:

The mechanical seal (see Figure 1) is a precision

product and must be treated as such. During

removal, great care must be taken to avoid

dropping any part of the seal. Take particular care

not to scratch the lapped faces on the washer

or the sealing seat. Do not put a seal back into

service until the sealing faces of the washer and

seat have been lapped or replaced.

10.Unscrew capscrews (32) and remove bracket

(35) from the motor.

11. The seal flexible cup and stationary seat

should be pressed out of the bracket and the

cavity cleaned of all residue. Make sure that

the 1/32 inch radius in the seal seat cavity

is not damaged during disassembly since a

sharp edge can easily cut the flexible cup

during reassembly.

12. Remove nameplate (34) and screws (33) only if

replacement is needed.

REASSEMBLY:

Reassembly will generally be in reverse order of

disassembly. If disassembly was not complete, use

only those steps related to your particular repair

program.

1. The mechanical seal (27) (see Figure 1) cannot

be installed as an assembly. It is necessary to

have the seal seat properly in place before the

balance of parts can be added. Thoroughly

Fig. 1 Mechanical Seal.

Fig. E. Bracket, Seal Flexible Cup and Stationary Seal Removed.

Fig. D. Mechanical Seal Removed.

inspect the seal cavity in the bracket for

burrs or nicks which could damage the seat

of the seal. Apply a film of soap paste or flax

soap (do not use oil or grease) to the seal seat

and install, taking care to seat it evenly and

squarely.

NOTE: If it is not possible to insert seat with fingers,

place cardboard protecting ring furnished with seal

over lapped face of seat and press into place with a

piece of tubing having end cut square. The tubing

should be slightly larger than the diameter of the

shaft. Remove cardboard after seat is firmly in

place.

2. Position bracket (35) on the motor and secure

with capscrews (32). Tighten screws evenly to

assure properalignment.

3. If nameplate (34) was removed, install and

attach with screws (33).

4. Wipe the sealing faces of the seat and seal

washer clean. Oil these surfaces with a clean

light oil. Lightly oil the shaft sleeve (25).

Slide the entire rotating assembly onto the

sleeve. The shaft sleeve with the seal rotating

assembly on it may now be replaced on the

motor shaft. Spring tension will probably

prevent the sleeve from remaining in position

axially until the impeller is locked against it.

5. Press wearing ring(s) (7 & 16) in casing (6) and

bracket (35). Rings should not be hammered

into place. Use a press, or clamp the parts in

a bench vise, using wooden blocks to protect

the rings. It may be necessary to pin or dowel

the rings after assembly if the insert or casing

has had rings replaced before, since each

reassembly can stretch or tear metal and

thereby loosen the fits. If the facilities are

available, it is good practice to take a very

light finish cut or to ream the inside diameter

of the casing rings after pressing to restore

roundness. When rings are pressed, they may

get squeezed out of shape.

6. Place impeller wearing rings (optional – 14 and

15) on impeller (11), using the same care as for

the case wearing rings. If the rings are to be

trued on a lathe, do not clamp the impeller so

tightly that it is permanentlydistorted.

7. Carefully place gasket (10) on motor end of

impeller. Assembly key (12) and impeller (11) to

motor shaft. Secure impeller with gasket (9B),

washer (9A), and impeller screw (9).

8. Install the four pipe plugs (4) in the pump

casing. Position the gasket (8) and casing (6)

against the motor bracket and secure with

screws (5).

9. Replace all relief, cooling, flushings, or drain

lines from the pump including compression

connections (1 and 2) and tubing (3). Connect

discharge piping and suction piping if

required, making sure to install gaskets on

the flanged connections. Connect electricity

to motor.

10.Read starting instructions before attempting

to start pump.

STARTING PUMP AFTER REASSEMBLY

Do not start pump until all air and vapor has been

bled and until making sure that there is liquid in

the pump to provide the necessary lubrication.

Without the fluid around it, the seal may be ruined

in a few seconds of operation. It is possible that

the mechanical seal may drip during the first few

minutes to one hour of operation.

NOTES:

1. Bronze fitted construction will be furnished as standard unless specified.

2. Refer to factory for special alloys.

3. Fairbanks Nijhuis reserves the right to substitute materials without notice.

4. Piece numbers 14 and 15 are not furnished as standard. When furnished, impeller must be modified.

WHEN ORDERING SPARE PARTS ALWAYS INCLUDE THE PUMP TYPE, SIZE, SERIAL NUMBER, AND THE PIECE NUMBER FROM THE

EXPLODED VIEW IN THIS MANUAL.

ORDER ALL PARTS FROM YOUR LOCAL AUTHORIZED DISTRIBUTOR, FACTORY BRANCH SALES OFFICE OR THE FACTORY AT NORTH

AURORA, ILLINOIS.

Fig. 2 Model 382 Exploded View. Boldface numbers indicate recommended spare parts.

Model 382 List of Parts

1. Elbow

2. Connector

3. Tubing

4. Plug, Pipe

5. Capscrew

6. Casing

7. Wear Ring

8. Gasket

9. Impeller Screw

9A. Washer

9B. Gasket

9C. Capscrew Seal

10. Gasket

11. Impeller

12. Impeller Key

14. Wear Ring

15. Wear Ring

16. Wear Ring

25. Sleeve

27. Seal

32. Capscrew

33. Screw

34. Nameplate

35. Bracket

61. Pin

16 5

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