Zenith B-9000 Series Installation, Care And Maintenance Download Page 11

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Diagram 2

.05 - 2.4 cc/rev B-9000

4.5 & 9 cc/rev B-9000

Diagram 1

18 SHCS M4x0.7

11 Seal Housing

13 Type 8-IT Mechanical Seal

21 Dryseal Type Plug

2 Drive Shaft

7 Rear Plate

19 SHCS M8x1.25

10 Hollow Dowel

6 Driven Gear

9 Arbor

Retaining Ring 16

Key 4

Driving Gear 5

Gear Plate 3

Front Plate 8

Interpret per
ASME-Y14.5M 1994

Square Key 17

18 SHCS M6x1

11 Seal Housing

13 Type 502 Mechanical Seal

2 Drive Shaft

31 Front Plate

33 Rear Plate

19 SHCS M10x1.5

20 SHCS M6x1

32 Sleeve Bearing

10 Hollow Dowel

6 Driven Gear

9 Arbor

34 Sleeve Bearing

Rear Plate Assembly 7

Retaining Ring 16

Round Key 4

Driving Gear 5

Gear Plate 3

Front Plate Assembly 8

Interpret per
ASME-Y14.5M 1994

O-Ring 15

Square Key 17

Summary of Contents for B-9000 Series

Page 1: ......

Page 2: ...Zenith Pumps Installation Care and Maintenance Zenith Chemical Duty Gear Pumps B 9000 Gear Pumps ...

Page 3: ... clearances to 00015 and provide high volumetric efficiency Minimum Pulsation Unique design offers virtually pulseless flow without valves or flexible elements to hinder performance Active Flowmeter Concept Unparalleled mechanical precision combined with the closed loop set point accuracy ensures an exact volume per revolution without expensive flow meters Low Cost of Ownership With only three mov...

Page 4: ... efficiency Lack of sufficient fluid is called starvation or cavitation This can be remedied by increasing the inlet pressure or reducing pump speed See table 1 on page 5 Metering of thin fluids requires a different approach Since the pump depends upon the metered fluid for lubrication of internal bearing surfaces speeds are normally limited These bearing surfaces include the bearing areas in the ...

Page 5: ...d viscosity Foreign particles impinging upon pump internal components Increased friction due to a poorly lubricating process fluid The decoupling characteristic of mag nets can be a safety feature preventing inadvertent pump motor overloads Magnets should be chosen so that their decoupling torque is greater than the pump input torque This should include any transient starting and stopping conditio...

Page 6: ...t cc rev Shaft Speed rpm Specific Gravity W1 W2 Note This sizing procedure should be used as a guideline for estimating pump type pump size and system requirements Please consult Zenith to confirm pump and system selection prior to placing a purchase order Flowrate pump capacity cc rev x rpm x performance factor cc rev W1 W2 0 3 4 29E 06 2 32E 06 0 6 1 93E 06 2 47E 06 1 2 1 21E 06 2 77E 06 2 4 9 3...

Page 7: ...e system using a lubricating fluid 2 Minimize the differential pressure across the pump ports to a maximum of 25 psi 3 Reduce the pump speed to an acceptable level approximately 10 rpm 4 Flush the pump for the shortest allowable time yielding effective cleansing of the system and no longer than necessary 5 It is recommended to use a bypass around the pump as illustrated in Figure A This will allow...

Page 8: ... does not appear to be running smoothly stop the pump immediately to avoid serious internal damage Cleaning Inspection and Repair Remember Zenith metering pumps are made for exact duty In order to develop high pressure and minimize slip the clearance between the metering gears and their housing must be as small as possible yet large enough to allow ade quate lubrication All parts are machined to e...

Page 9: ...led Pumps skip to step 3d 2 For mechanical face seal and double lip seal pumps remove the socket head screws 18 from the seal housing 11 For packing seal pumps remove the hex head screws 15 from the packing gland 14 then lift off the packing gland 3 Lift off the seal housing 11 and remove the seal a Mechanical Face Seal Pumps The ceramic seat may be removed from the housing by pushing it out with ...

Page 10: ... of the gear s I D bearing holes and dowel holes should be lightly stoned with a round Arkansas stone to remove any nicks Then polish the I D with a small piece of fine abrasive paper 400 grit or finer 5 After all preparation has been com pleted remove the abrasive grain and loose residue in an ultrasonic cleaner or other suitable cleaning method Abrasive grain is larger in size than the pump clea...

Page 11: ...4 Driving Gear 5 Gear Plate 3 Front Plate 8 Interpret per ASME Y14 5M 1994 Square Key 17 18 SHCS M6x1 11 Seal Housing 13 Type 502 Mechanical Seal 2 Drive Shaft 31 Front Plate 33 Rear Plate 19 SHCS M10x1 5 20 SHCS M6x1 32 Sleeve Bearing 10 Hollow Dowel 6 Driven Gear 9 Arbor 34 Sleeve Bearing Rear Plate Assembly 7 Retaining Ring 16 Round Key 4 Driving Gear 5 Gear Plate 3 Front Plate Assembly 8 Inter...

Page 12: ... Assembly 8 Mechanical Seal 13 Round Key 4 Driving Gear 5 Gear Plate 3 Interpret per ASME Y14 5M 1994 O Ring 15 Square Key 17 18 SHCS M8x1 25 11 Seal Housing 13 Mechanical Seal 2 Drive Shaft 31 Front Plate 33 Rear Plate 19 SHCS M12X1 75 Grade 12 9 20 SHCS M6x1 32 Sleeve Bearing 10 Hollow Dowel 6 Driven Gear 9 Arbor 34 Sleeve Bearing Rear Plate Assembly 7 Retaining Ring 16 Round Key 4 Driving Gear ...

Page 13: ...ener 19 with the corresponding tapped hole on the front plate 6 Install the drive shaft 2 from the opposite side of the front plate 7 Install the round key 4 into the keyway on the drive shaft 8 Slide the driving gear 5 onto the drive shaft and into the gear plate Take care to align the keyway in the gear with the key 4 The key may need to be held down to prevent it from being damaged by the gear ...

Page 14: ...e pump drive shaft 2 NOTE Make sure that the key 17 is not in place on the drive shaft Slide the lip seal 51 and seal housing 11 along the seal assembly tool until it smoothly glides over the drive shaft Continue until the seal housing is in place and lined up with the bolt holes on the front plate 8 Install the socket head screws 18 into the seal housing 11 and tight en to the recommended torque ...

Page 15: ... seals assembly leakage 2 Improperly positioned Check seal and faces for seal or faces proper position 3 Excessive inlet Reduce inlet pressure pressure Reduced pump 1 Worn gear s Replace worn gear s efficiency 3 Process conditions Consult factory for gear changed clearance recommendations for new process conditions Trouble shooting Possible malfunctions of the pump with their causes and remedies a...

Page 16: ...y of operating conditions and applications for these products or systems the user through its own analysis and testing is solely responsible for making the final selection of the products and systems and assuring that all performance safety and warning requirements of the application are met The products described herein including without limitation product features specifications designs availabi...

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