SPCO VM User manual
Installation and operating instructions
VM, VMC, VMN
Vertical Multistage
Centrifugal Pump, 50Hz
®
EU Declaration of conformity
according to the Low Voltage Directive 2014/35/EU
and the Machinery Directive 2006/42/EC
and Electromagnetic Directive 2014/30/EU
For the following equipment:
Product: Pump
Trademark: Vertical Multistage Pump
Type Designation: VM, VMC, VMN
Manufacture’s Name: Swiss Pump Company AG
Manufacture’s Address: Moosweg 36, CH-3645,
Thun-Gwatt -Switzerland
is herewith confirmed to comply with the requirements set out in the Directive 2014/35/EU
And the Machinery Directive 2006/42/EC and Electromagnetic Directive 2014/30/EU.
For the evaluation of the compliance with this Directives, the following standards are applied:
EN ISO 12100:2010
EN ISO 13857:2008
EN 60204-1:2006
EN 809:1998
EN 6100-6-2:2005
EN 6100-6-4:2007
EN 60335-1:2012
EN 953:1997
EN 60335-2-41
Responsible for making this declaration is the:
Manufacture Authorized representative established within the EU
Authorized representative established within the EU (if applicable):
Company Name: Swiss Pump Company AG
Company Address: Moosweg 36, CH-3645,
Thun-Gwatt -Switzerland
Person responsible for making this declaration
Name, Surname: Michael Bähler
Position/Title: production Manager
(Place) (Date) (Company stamp and legal signature)
Switzerland 12/09/2019
Approvals
3®
Contents
Handling page 4
Applications 4
Pump liquids 4
Technical data 4
Definition of model 4
Min. inlet pressure NPSH 5
Min. nominal flow rate 5
Max. inlet pressure and operating pressure 6
Installation 10
Electrical connection 11
Start-up 11
Maintenance 13
Coupling adjustments 14
Troubleshooting 16
Technical Data
4
VM, VMC, VMN series in-line pumps booster pumps are designed for a wide range of applications in various industries
for water treatment, water boosting, water supply, cooling, cleaning, etc.
Applications
Definition of Model
Technical data
Temperatures
Ambient temperature: 0°C to +40°C
Liquid temperature: -15°C to +120°C
If ambient temperatures are above +40 degrees °C, or if the pump is located at elevations more than 1,000
meters above sea level, the motor’s output must be decreased to compensate for less effective cooling, and may have to be
replaced with a stronger motor.
Electrical Data
See the motor nameplate.
Make sure that the supply voltages, phase and frequencies correspond to the motor specifications.
Number of starts per hour
Motors up to and including 4 kW: Maximum 100 times per hour.
Motors of 5.5 kW and up: Maximum 40 times per hour.
If you use another brand of motor then check the manufacturer’s instructions for the maximum frequency
of starts.
Identification Code
VM - 10 - 5 - SQQE
Code for shaft seal
Number of stages
Nominal flow ᇿm3/hሀ
Type Ranges
VM - 10 - 5 - SQQE
Code for shaft seal
Number of stages
Nominal flow (m3/h)
Type Ranges
Handling
Read these instructions carefully before beginning installation. Lift and handle these pumps carefully.
VM, VMC, VMN series are vertical multi-stage non-self priming pumps coupled with standard electric motors.
This manual applies to standard version pumps and for standard applications.
Contact your supplier or the factory for information about special pump versions and applications.
Pumped liquids
The pumps are designed for use with clean, viscous and non-explosive liquids that do not contain abrasive matter.
These pumps are not designed to be used with abrasive, solid containing, explosive and corrosive liquids.
For special application, please contact your supplier or the factory.
5®
Minimum inlet pressure NPSH
Minimum nominal flow rate
To avoid cavitation, make sure that there is a minimum
pressure on the suction side of the pump.
NPSHA: Net Positive Suction head Available
The net positive suction head available is a function of
the pump suction system.
NPSHR: Net Positive Suction head required
The net positive suction head required is a function of
the pump design at the operating point on the pump
performance curve.
NPSHA=Ha-Hs-Hf-Hv-Hst (in meters head)
Ha: Barometric pressure.(That can be set to 10.2 m.)
Hs: Suction lift.
Hf: Friction loss in suction pipe.
Hv = KT+KH: Vapor pressure
KT: Flow resistance due to liquid temperature.
KH:Flow resistance due to elevation above sea level.
If the liquid is water, you can consult the tables to determine
the values of KT and KH.
To prevent overheating of the internal pump components,
the pump should not be used at flows below the minimum
flow rate.
Do not run the pump against a closed
discharge valve for longer than a few seconds.
The curve shows the minimum flow rate as a percentage of
the nominal flow rate in relation to the liquid temperature.
40 60 80 100
10
20
Qmin
[%]
t [°C]
30
120 140
0
T (C) 20 30 40 50 60 70 80 90 100 110 120
KT (m) 0.2 0.4 0.8 1.3 2.2 3.3 5 7.4 11 15 22
H (m) 0 500 1000 1500 2000 2500 3000
KH (m) 0 0.55 1.1 1.65 2.2 2.75 3.3
Hst: Safety margin. (minimum: 0.5 meters head)
NPSHA≥NPSHR: Pump running will be fine.
NPSHA< NPSHR: The pump will be dry running or cavitating.
Stop operation of the pump if cavitation occurs.
Cavitation will cause pump damage and the resultant damage is not subject to warranty.
40 60 80 100
10
20
Qmin
[%]
t [°C]
30
120 140
0
Technical Data
6
Maximum Inlet Pressure and Operating Pressure - 50Hz
7
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Maximum Inlet Pressure and Operating Pressure
50Hz
10!
7®
Stage Max. inlet pressure Stage Max. operating pressure
1-2 10 bar
2-(5-1) 15 bar
(6-1)-7 20 bar
(1-1)-1 10 bar
(2-1)-(4-2) 15 bar
(5-2)-6 20 bar
Stage Max. inlet pressure Stage Max. operating pressure
1 10 bar
(2-2)-(3-1) 15 bar
3-(5-2) 20 bar
(1-1) 10 bar
(1-2) 15 bar
(3-2)-(4-2) 20 bar
(1-1)-(4-2) 30 bar
VM, VMC, VMN 120
VM, VMC, VMN 150
VM, VMC, VMN 120
1-(5-2) 30 bar
VM, VMC, VMN 150
(1-1)-6 30 bar
1-7 30 bar
Maximum Inlet Pressure and Operating Pressure - 50Hz
Technical Data
8
Technical Data
8
60Hz
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Maximum Inlet Pressure and Operating Pressure - 60Hz
9®
Maximum Inlet Pressure and Operating Pressure - 60Hz
Stage Max. inlet pressure Stage Max. operating pressure
1-2 10 bar
2-(5-1) 15 bar
(6-1)-7 20 bar
(1-1)-1 10 bar
(2-1)-(4-2) 15 bar
(5-2)-6 20 bar
Stage Max. inlet pressure Stage Max. operating pressure
1 10 bar
(2-2)-(3-1) 15 bar
3-(5-2) 20 bar
(1-1) 10 bar
(1-2) 15 bar
(3-2)-(4-2) 20 bar
(1-1)-(4-2) 30 bar
VM, VMC, VMN 120
VM, VMC, VMN 150
VM, VMC, VMN 120
1-(5-2) 30 bar
VM, VMC, VMN 150
(1-1)-6 30 bar
1-7 30 bar
Technical Data
10
Always refer to the local or national regulations and codes relating to the selection of the installation site, the water and power
connections, etc.
Position
Pumps should be installed in a protected environment, not exposed to weather.
Make sure that there are no obstructions to prevent proper motor cooling.
Anchoring
The pump must be secured to a solid foundation by bolts through the holes in the flange or base plate.
Installation example
When positioning and installing the pump, follow the installation examples next page in order to avoid damaging the pump.
Installation
No. Description
1 Pipe support: Support piping system properly to avoid stresses on connections.
2 On-off valves: Install on-off valves for easy access, before the pump intake and after the pump discharge.
3 Use flexible piping on both input and output sides of the pump to reduce vibration and transmission of noise.
4 Check valves will prevent return flow of pumped liquid when pump is stopped, reducing the danger of pump damage.
5 Control Panel: Use high quality components. Make sure that the panel conforms to local standards and regulations.
6 Do not place elbows next to the pump intake and discharge.
7 If pump needs to be operated with on-off valve closed, install a by-pass line to avoid damaging the pumping system.
11 ®
• All electrical connection should be in accordance with the local regulations and made by a qualified electrician.
• Make sure that the supply voltages and frequencies, and phase are suitable for the motor used.
• Before proceeding, make sure that all the connections are grounded and well insulated.
• Overload protection should be provided.
• To connect, proceed as shown on the inside of the terminal board cover.
• The terminal box can be turned to four positions.
• Check the direction of rotation (Three-phase motor only).
• Make sure that the controls are properly grounded.
• To avoid the possibility of dry running, we strongly recommend installing dry running protection.
Electrical connection
The pump and suction pipe should be filled with the liquid to be pumped before start-up to prevent dry running at start-up.
Dry running can damage the pump bearing and shaft seal.
• Start the pump and check the direction of rotation of the motor (Three –Phase motors).
• Start the pump, keeping the on-off valve of the discharge side of the pump closed. Then, open the on-off valve slowly.
The pump must run smoothly and noiselessly. If not, then it may be necessary re-prime the pump.
• Check the current drawn of the motor. If necessary, adjust the setting of the thermal relay.
• Any air pockets trapped inside the pump may be released by adjusting the air screw.
If the pump is installed in a location where it is subject to freezing when not in operation, then the pump and
the pipe system should be drained to prevent damage from freezing.
Start-up
No. Description
8If it is necessary to increase the diameter of the suction pipe, place an eccentric reducer between the check valve
and the flexible pipe section.
9 Using elbows will increase the flow resistance. Wide bends will result in lesser flow resistance.
10 The piping must have a level or positive gradient to prevent the formation of air pockets.
11 The diameter of the drop pipe must be bigger than the diameter of the pump’s suction port.
12 Use a foot valve in case of negative suction head.
13 Size pump for correct head.
14 Place the intake of the suction pipe so that the intake is always submerged to prevent entry of air.
15 Install a compound gauge at the pump suction and a pressure gauge at the pump discharge.
Technical Data
12
For VM, VMC, VMN 1, 3, 5 series
For these pumps, it is advisable to open the bypass valve
during start-up. The bypass valve connects the suction and
discharge sides of the pump, thus making the filling procedure
easier. When the operation is stable, the bypass valve can be
closed.
• If the pumped liquids contains air, it is advisable to leave the
bypass valve open if the operating pressure is lower than 6
kg/cm². If the operating pressure constantly exceeds 6 kg/cm²,
the bypass valve must be closed. Otherwise the material at the
opening will be worn because of the high liquid velocity.
13 ®
Before starting maintenance work on the pump, the motor, or other parts of the system, make sure that the
power supply has been switched off.
• The pump does not have a recommended scheduled maintenance schedule.
• If the motor is fitted with grease nipples, then the motor should be lubricated with a high temperature lithium-based grease.
If not, then the motor does not require regular maintenance.
• If the pump and motor are used infrequently with long intervals of non-operation, then we recommend that the motor
be greased.
Maintenance
VM, VMC, VMN 1, 3, 5 Coupling adjustments
VM, VMC, VMN 1, 3, 5 Coupling adjustments
Technical Data
14
VM, VMC, VMN 10, 15, 20 Coupling adjustments
VM, VMC, VMN 10, 15, 20 Coupling adjustments
15 ®
VM, VMC, VMN 32, 45, 64, 90 Coupling adjustments
VM, VMC, VMN 32, 45, 64, 90 Coupling adjustments
Technical Data
16
Troubleshooting
Fault Cause Solution
Pump does not run when
the motor starter is activated
Supply failure or no power supply Check connections or restart the
power supply
Main contacts in motor starter are not
making contact or the motor coils are
defective
Reconnect or replace contacts or
magnetic coil
Pump or piping system may be
obstructed causing a jam
Clean the obstruction and restart
pump
Pump or auxiliary circuits protection
fuses blown Replace fuses
Tripping of anti-dry running
protection
Check the water level in the tank
or the water system pressure.
If everything is in order, check the
protection device and its cables
Motor protector or thermal relay has
tripped out Reset the motor or thermal protector
Motor may have failed Replace the motor
Starter overload trips immediately
when the power is switched on
Overload setting is too low Set the motor starter correctly
The cable connection is loose or faulty Fasten or replace the cable
connection
One fuse is blown Replace fuse and try starting again
Pump is jammed by an obstruction Check and clean obstruction from
system
Contacts in overload are faulty Replace motor starter contacts
The motor winding is defective Replace the motor
Low voltage (Especially at peak time) Check the power supply
The pump starts up but, after
a period of time, the thermal
protector trips out or the fuses blow.
Worn motor bearings causing motor
to overheat Replace motor bearings
The pump’s delivery rate is higher
than the specified rate on the pump
nameplate
Partially close the on-off valve
located discharge side until the
delivery rate returns to within the
specified limits
There are obstructions inside the
pump or pumping system
Disassemble and clean the pump and
piping
Less viscous liquids may cause the
motor to work too hard and overload
the motor, causing the motor to
overheat
Check the actual power requirements
based on the characteristics of the
liquid being pumped, and replace
the motor accordingly
The pump start, but after a short time
the thermal protector trips
The voltage is not within the motor‘s
operating limits Check the operating of the pump
The control panel is situated in an
excessively heated area or is exposed
to direct sunlight
Protect the control panel from heat
sources and from the sun
A phase in the power supply is missing Check the power supply
17 ®
Fault Cause Solution
Pump runs but no water delivered
Pump is not primed with liquid Fill the pump with the liquid to be
pumped
The pump, suction or discharge pipes
are blocked by solids in the liquid
being pumped
Clean the pump, suction or discharge
pipe
The foot or check valve is blocked or
has failed Replace the foot or check valve
The suction pipe leaks Repair or replace the suction pipe
The air is in the suction pipe or pump Remove trapped air from system
Motor operating in wrong direction
(three-phase motor)
Change the direction of rotation
of the motor by reversing motor
connections
The pump capacity is not constant
The pump draws in air or the inlet
pressure is too low Improve the suction conditions
The pump or the suction side of the
piping system partly blocked by
foreign bodies
Clean the pump or suction pipe
The pump rotates in the wrong
direction when switched off
The foot or the check valve has failed Check and replace check valve
Leakage in the suction pipe Repair or replace the suction pipe
The system’s general protection
cuts in Short circuit Check electrical system
The frequency of Pump start-up is
too high
Leakage in the foot valve, check valve
or system Repair or replace the components
Ruptured membrane or no air
pre-charge in surge tank
See relevant instructions in surge
tank’s manual
Vibration and noise
Cavitation
Reduce the required flow or
improve the operating conditions of
the pump (suction conditions, head,
flow resistance, liquid temperature)
Make sure that pump and motor
shafts are properly aligned Adjust the pump and/or motor shafts
Worn motor bearings Replace the bearings or the motor
Operation with frequency converter Consult a qualified engineer form the
supplier of the frequency converter
Check vibration and noise damping
devices
Replace vibration & noise dampers,
if worn
Swiss Pump Company AG
Moosweg 36
CH - 3645 Thun - Gwatt
Switzerland
Tel. +41 33 223 11 00
Fax +41 33 223 11 22
mail@swisspump.com
www.swisspump.com
This manual suits for next models
38
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