Centrifugal Purifier Flashcards

0
Q

300gpm specs?

A

148-152bpm
Inlet 9psi
Discharge 20+-5

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1
Q

200gpm Specs?

A

146-150bpm
Inlet 9psi
Discharge 30+-5

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2
Q

Direct drive assembly?

A

1) 2 sets of ball bearings support the shaft

2) metal coupling & rubber cushion connect drive shaft to electrical motor shaft

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3
Q

Brake assembly?

A

1) used in emergencies only (n/a)

2) used pad & drum system

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4
Q

Lubrication system?

A

1) holds 8 to 8 1/2 quarts of gear oil (90 grade)

2) uses splash method to lubricate

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5
Q

Spindle assembly?

A

1) drive shaft for bowl
2) 3 sets of ball bearings support the spindle
3) lubricated by the splash method
4) large vertical springs (warm quill) absorbs torque and wobble
5) 6 horizontal springs (buffer springs) prevent wobble
6) gear rotation 2.27 to 1

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6
Q

Bowl casing?

A

1) houses rotating bowl
2) stationary part of the cover hinge
3) bowl casing drain
4) 2 lock screws/ plugs
5) water observer well
6) water discharge line
7) hand wheel cover clamps
8) bowl cover locking device

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7
Q

Bowl shell?

A

1) provides a working are for the separation of JP-5 & sediments
2) rotates with spindle held on spindle by the spindle cap nut
3) bowl spins 4100rpm

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8
Q

Strainer?

A

1) prevents clogging of drain
2) seats around the bottom center of bowl shell
3) drain contains 8 round holes

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9
Q

Tubular shaft?

A

1) rotates with bowl
2) has a raised bass that locks with slots in bowl
3) flared bottom with 12 evenly spaced holes
4) for circular bulkhead between feed and clean fuel

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10
Q

Intermediate disc?

A

200gpm 1 on bottom/ 127 on top
300gpm 1 on bottom/ 186 on top

1) keyed to tubular shaft and rotates with tubular shaft
2) has 12 evenly spaced holes
3) has 12 evenly spaced ribs .050 of an inch

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11
Q

Intermediate top disc?

A

1) top of disc stack
2) small than other disc
3) used for compression

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12
Q

Top disc?

A

1) covers entire disc stack
2) wider than disc stack
3) clean fuel on inside
4) water on outside
5) forms pump casing for paring disc

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13
Q

Paring disc?

A

1) centripetal pump
2) provides necessary back pressure for proper operation
3) does not rotate
4) flow outside to inside
5) has protective nylon collar

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14
Q

Bowl top?

A

1) seat disc stack on the tubular shaft
2) compressed disc stack
3) has upper and lower o-ring to prevent leakage
4) has alignment mark for proper compression

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15
Q

Coupling ring?

A

1) lock bowl top to bowl shell
2) left handed threads
3) has alignment mark for proper compressions

16
Q

Discharge ring?

A

1) maintains proper location of the line of separation
2) seven discharge rings
3) 220-250mm in 5mm increments
4) outside diameter is the same
5) inside diameter stamped on ring

17
Q

Coupling nut?

A

1) locks discharge rings in place

2) left handed threads

18
Q

Theory of operation?

A

1) centrifugal force
2) clean and feed fuel are separated by tubular shaft
3) 80% of purification takes place where fuel exits tubular shaft
4) last 20% takes place as fuel travels up through the disc stack