Davey VM Series Stainless Steel Vertical Multistage Pumps - Manual (Page 2)

2
Safety
Read this data sheet carefully before installing and starting
your pump. Pay special attention to the points concerning the
safety of the equipment.
Symbols used in the manual
Calls attention to a potential risk that might
affect safety.
Transport and Storage
When taking delivery of the pump, check that it has not
been damaged in transit. If anything is found wrong, take the
necessary steps with the carrier within the allowed time.
Handle the pump carefully so as not to alter the geometry or
alignment of the hydraulic assembly.
Product Description
The pump
Multistage vertical pump (2 to 20 stages, depending on model).
Not self-priming. Ports in line at bottom. Shaft sealing by
standardized mechanical seal.
• Flanges*
Flanges are round for all models and include screwed
companion flanges with gaskets, nuts, bolts and washers.
* Remove protective inserts from pump ports before fixing
flanges to pump.
The motor
The Davey VM series multi-stage pumps have been specifically
designed to be used with special TEFC flange mounted electric
motors. Typical specification for motors supplied are;
• TEFC motor with standard metric frame flange and shaft for
vertical operation. Motor and pump linked by a coupling with
safety guards.
• Protection index: IP 54 (min.)
• Insulation class: F
• Single phase motors up to 2.2kW include built-in thermal
protection with automatic reset, except special dual voltage
(240/480v) motors.
• Dual voltage / larger single phase motors and three phase
motors to be wired in with a contactor incorporating quick-trip
thermal overloads.
NOTE: • Motor sizes 0.37kW to 4.0kW are V18 / B14 small
flange mounted.
• Motor sizes 5.5kW to 22kW are V1 / B5 large
flange mounted, with special bearings.
FREQUENCY 60Hz
SPEED 3600 rpm
VOLTAGE* 1-PHASE 220V
3-PHASE 220/380V
* Standard voltage; tolerance ± 10%
Instructions concerning electricity
If the equipment delivered is to be installed
at a later time, store it in a dry place and
protect it from impact and outside hazards
(moisture, frost, etc.).
WARNING
General
Applications
Pumps for clear liquids, free of abrasives in residential,
agricultural, industrial, and other applications.
Specifications
Operating Conditions
• Temperate range: -15 to +120°C
• Ambient temperature: up to 40°C
• Suction head: depends on NPSH of pump
Maximum Inlet Pressure
The maximum inlet pressure is shown in the list below. But the
actual inlet pressure plus the valve close pressure of the pump
shall be lower than the maximum allowable working pressure.
Model Max. Inlet Pressure
VM3-8 & above 10 bar
Up to VM5-10 10 bar
VM5-12 & above 15 bar
Up to VM10-6 6 bar
VM10-8 & above 10 bar
VM16-2 and VM16-3 6 bar
VM16-4 & above 10 bar
VM32-2A to VM32-4 4 bar
VM32-6 to VM32-10 10 bar
VM32-12 15 bar
VM65-2A 4 bar
VM65-2 to VM65-3 10 bar
VM65-4A and VM65-5 15 bar
Up to VM90-3A 10 bar
VM90-3 & above 15 bar
Maximum Working Pressure
Model Curve Number
Up to VM3-15 1
VM3-17 & above 2
Up to VM5-16 1
VM5-19 and VM5-22 2
VM10-12 1
VM10-14 & above 3
Up to VM16-8 1
VM16-11 & VM16-14 3
Up to VM32-6 1
VM32-8 & above 4
VM65 range 1
VM90 range 1
The following figure shows the limitation of pressure and
temperature, which shall be kept within the region as shown in
the figure.
P(bar)
28
24
20
16
12
8
4
0
-40 0 40 80 120 t( o C)
1
2
3
4