Davey VM Series User manual

Please pass on these instructions to the operator of this equipment.
VM Series
Vertical Multistage
Centrifugal Pump (50 & 60Hz)
Installation and Operating
Instructions
Tested in compliance with
for use in contact with safe drinking water

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Contents:
1. APPLICATIONS............................................................................................................................................3
2. IDENTIFICATION OF THE PUMP ...............................................................................................................4
3. STRUCTURE ................................................................................................................................................7
4. INSTALLATION INSTRUCTIONS...............................................................................................................13
5. STARTING AND MAINTENANCE ..............................................................................................................14
6. DISMANTLING AND ASSEMBLY ..............................................................................................................15
7. ORDER OF ASSEMBLY FOR DIFFUSERS AND IMPELLERS.................................................................19
8. FAULT FINDING .........................................................................................................................................27
9. IMPORTANT NOTICE.................................................................................................................................27
DAVEY WARRANTY.......................................................................................................................................28

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Please read instructions carefully before installing and operating the pump
1. APPLICATIONS
Davey’s latest range of high efciency, non self priming vertical multistage pumps provide low noise, small
footprint, very reliable as well as being easy to service and suit a wide number of applications.
1.1 Applications
Davey VMC pumps are designed for use with low viscosity, non amable, non explosive liquids that are free
from solids and bers. Please consult your Davey dealer for specic application needs.
Boiler feeding and condensation system;
Water treatment, inltration, ltration system
Food, beverage industry;
High building water supply;
Fire ghting system;
Industrial cleaning system;
Liquid transferring, circulating, boosting;
Hot water, cold water;
Irrigation applications.
1.2 Working conditions
Liquid temperature: -15ºC to +120ºC;
Flow rate range: 0.5-240m3/h;
Liquid pH range: pH- 0-14;
Max. ambient temperature: +40ºC;
Max. altitude: 1000m;
Min inlet pressure: Refer to NPSH curve;
Max. working pressure: See table 1A & table 1B.

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When the specic gravity or viscosity of the pumped liquid is different than water, the
shaft power of the pump will be increased. A larger motor will need to be selected. Please
contact your Davey representative for more details.
2. IDENTIFICATION OF THE PUMP
VM 32 - 2AM3
Motor tted
M1 = Single phase
M3 = Three phase
ML = Liquid end
Impeller variation
(A = turndown)
VM Series Vertical Multistage
Stainless Steel Pump
Number of stages
Nominal capacity at BEP in m3/hr
VM 20 - 5M3 - 316
316L stainless steel
Motor tted
M1 = Single phase
M3 = Three phase
ML = Liquid end
VM Series Vertical Multistage
Stainless Steel Pump
Number of stages
Nominal capacity at BEP in m3/hr

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Allowed maximum working pressure for the pump 50Hz
Model Max. working pressure
(bar)
VM1,3,5,10,15,20 Flange, pipe thread 25
VM32
VM32-1A to VM32-6B 16
VM32-6 to VM32-10B 30
VM42
VM42-1A to VM42-4B 16
VM42-4 to VM42-6 25
VM42-7B to VM42-7 30
VM65
VM65-1A to VM65-3 16
VM65-4B to VM65-52 25
VM90
VM90-1A to VM90-3B 16
VM90-3A to VM90-4B 25
VM120, 150, 200
VM120, 150, 200 20

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3. STRUCTURE
• Davey VMC pumps main components are: motor, pump head, diffusers, impellers, cylinder, inlet and outlet
chamber, shaft, mechanical seal,etc. See drawing 1.
• The pump key components such as diffusers, impellers, cylinder and shaft are made of stainless steel.
The pump head, inlet and outlet chamber are made from precision cast stainless steel.
Drawing 1-A VM1,3
1a. Coupling guard-left
1b. Coupling guard-right
2. Screw, washer
3. Pump head
3a. Lining
4. Diffuser
4a. Support diffuser
4b. Neck ring cover
4c.Neck ring
5. Coupling
5a. Inducer
6. Baseplate-Flange type
6a. Baseplate-cutting ferrule type
7. Shaft pin
8. Nut M12
8a. Washer 12
9. Screw
10. Circlip cover
20. Flange
21. Retaining ring
22. Supporting washer
23. Nut M8-LH
24. Impeller washer
25. Staybolt
26a. lnlet&outlet chamber-Flange type
26d. lnlet&outlet chamber-pipe thread type
28. Drain screw M10
29. Drain plug
30. O-ring 136. 5X3. 3
31. Y ring
33. Sleeve for support diffuser
34. Mechanical seal
36. Air vent plug
37. O-ring16X2.8
38. Air vent screw
39. Bolt, washer
40. Motor
47. lmpeller sleeve 9.6X12.6
47a. Bearing
49. Impeller
50a. Top diffuser
51. Shaft
55. Cylinder
60. Corrugated spring
63. O-ring retainer

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Drawing 1-B VM5
1a. Coupling guard-left
1b. Coupling guard-right
2. Screw, washer
3. Pump head
3a. Lining
4. Diffuser
4a. Support diffuser
4b. Neck ring cover
4c.Neck ring
5. Coupling
5a. Inducer
6. Baseplate-Flange type
6a. Baseplate-cutting ferrule type
7. Shaft pin
8. Nut M12
8a. Washer 12
9. Screw
10. Circlip cover
20. Flange
21. Retaining ring
22. Supporting washer
23. Nut M8-LH
24. Impeller washer
25. Staybolt
26a. lnlet&outlet chamber-Flange type
26d. lnlet&outlet chamber-pipe thread type
28. Drain screw M10
29. Drain plug
30. O-ring 136. 5X3. 3
31. Y ring
33. Sleeve for support diffuser
34. Mechanical seal
36. Air vent plug
37. O-ring16X2.8
38. Air vent screw
39. Bolt, washer
40. Motor
47. lmpeller sleeve 9.6X12.6
47a. Bearing
49. Impeller
50a. Top diffuser
51. Shaft
55. Cylinder
60. Corrugated spring
63. O-ring retainer

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Drawing 1-C VM10
1a. Coupling guard-left
1b. Coupling guard-right
2. Screw, washer
3. Pump head
3a. Lining
4. Diffuser
4a. Support diffuser
4b. Neck ring cover
4c.Neck ring
5. Coupling
5a. Inducer
6. Baseplate
7. Shaft pin
8. Nut M16
8a. Washer 16
9. Screw
10. Circlip cover
14. Strap
17. Impeller sleeve 29X17.4
20. Flange
21. Retaining ring
22. Supporting washer
23. Nut M10-LH
24. Impeller washer
25. Staybolt
26a. lnlet&outlet chamber-Flange type
26d. lnlet&outlet chamber-pipe thread type
28. Drain screw
29. Drain plug
30. O-ring 15X3. 3
31. Y ring
33. Sleeve for support diffuser
34. Mechanical seal
36. Air vent plug
37. O-ring 16X2.8
38. Air vent screw
39. Bolt, washer
40. Motor
46. Adjusting rubber
47a. Bearing
49. Impeller
50a. Top diffuser
51. Shaft
55. Cylinder
60. Corrugated spring
63. O-ring retainer
65. Screw M8X20

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Drawing 1-D VM15,20
1a. Coupling guard-left
1b. Coupling guard-right
2. Screw, washer
3. Pump head
3a. Lining
4. Diffuser
4a. Support diffuser
4b. Neck ring cover
4c.Neck ring
5. Coupling
5a. Inducer
6. Baseplate
7. Shaft pin
8. Nut M16
8a. Washer 16
9. Screw
10. Circlip cover
14. Strap
17. Impeller sleeve
20. Flange
21. Retaining ring
22. Supporting washer
23. Nut M10-LH
24. Impeller washer
25. Staybolt
26a. lnlet&outlet chamber-Flange type
26d. lnlet&outlet chamber-pipe thread type
28. Drain screw
29. Drain plug
30. O-ring 16X3. 3
31. Y ring
33. Sleeve for support diffuser
33b. Long sleeve for support diffuser
34. Mechanical seal
36. Air vent plug
37. O-ring 16X2.8
38. Air vent screw
39. Bolt, washer
40. Motor
46. Adjusting rubber
47a. Bearing
49. Impeller
50a. Top diffuser
51. Shaft
55. Cylinder
63. O-ring retainer
65. Screw M8X20, washer X8

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Drawing 1-E VM32,42,65,90
1. Coupling guard
2. Hex socket head screw
3. Pump head
4. Diffuser (Not for 1 stage pump)
4a. Support diffuser (Not for 1 or 2 stage pumps)
4b. Neck ring base assembly
5. Coupling
5a. Inducer
6. Baseplate
7. Bracket
8. Hex socket head screw
9. Hex socket head screw
10. Seal cover
11. Nut
11a. Flat washer
13. Hex socket head screw
13a. Flat washer
14. Strap
15. Impeller nut
15a. Impeller nut for support diffuser
(Not for 1 or 2 stage pumps)
16. Cone
17. Intermediate bearing
(Not for 1 or 2 stage pumps)
18. Cover
19. Flat washer
19a. Hex socket head screw
20a. Flange
25. Staybolt
26h. Inlet & outlet chamber CDLF type
26b. Inlet & outlet chamber CDL type
28. Drainage screw
29. Screw
30. O-ring
34. Mechanical seal
36. Air vent nut
37. O-ring
38. Air vent screw
39. Screw
39a. Nut
39b. Washer
40. Motor
44. Washer
45. Hex socket head screw
46. Adjusting rubber
47. Bottom bearing
47a. Bottom sleeve
49. Small impeller
49a. Impeller
49b. Ring for neck ring
50a. Top diffuser
51. Shaft
55. Cylinder