AxFlow SVM Series Manual

Seal Less
Magnetically Coupled
Sliding Vane Pump
SVM SERIES
OPERATION
&
MAINTENANCE
MANUAL

IMPORTANT NOTES
SVM Series Operating & Instruction Manual Page i
Read these instructions before putting the pump into service.
Installation and operation should be carried out by qualified personnel only.
Danger of electrocution. Electric supply must be isolated before working on the pumpset.
Electrical work should only be carried out by qualified personnel

IMPORTANT NOTES
SVM Series Operating & Instruction Manual Page ii
Failure to observe the recommended procedures may result in early
and severe damage to your pump and may also invalidate the
guarantee.
Locate the pump on a firm base close to the liquid source and not
more than 1.5 – 2.0 metres above it.
Mount the pump horizontally if possible. If mounted vertically, the
unit must be motor downwards.
Keep the inlet pipe as short and straight as possible. If self-priming is
required, ensure that the inlet line is completely airtight.
The bore of the inlet and discharge pipes should be at least as large
as the nominal bore of the pump ports.

IMPORTANT NOTES
SVM Series Operating & Instruction Manual Page iii
Use rigid or reinforced inlet pipe that will not deform or collapse
under suction conditions.
Align rigid pipes accurately with the pump ports, to ensure that the
pump head is not distorted or damaged.
Fit an inlet strainer of approx. 0.2 mm mesh if there is any risk of solid
particles entering the pump.
Use of an electrical starter is recommended. A simple switch is often
inadequate for starting and stopping electric motors.
APPROPRIATE STARTER WILL: prevent accidental restarts after power-failure; provide a safe,
waterproof switch enclosure; protect the motor with a correctly set overload cut-cut (a fuse
protects only the wiring); withstand the heavy starting current of the motor, preventing arcing
and rapid contact wear.

CONTENTS
SVM Series Operating & Instruction Manual Page iv
GENERAL ................................................................................................................................................. 1
Noise levels .......................................................................................................................................... 1
Area of operation ................................................................................................................................. 2
Spare parts ........................................................................................................................................... 2
Transport ............................................................................................................................................. 3
Storage ................................................................................................................................................ 3
Drivers ..................................................................................................................................................4
INSTALLATION........................................................................................................................................ 5
Foundations ......................................................................................................................................... 5
Close-coupled motor-pump unit without baseplate ......................................................................... 5
Motor-pump units on baseplates...................................................................................................... 5
Pump and motor alignment .................................................................................................................6
Methods of checking alignment ........................................................................................................... 7
Straight edge.................................................................................................................................... 7
Dial gauge ("clocking") ..................................................................................................................... 8
Optical methods ............................................................................................................................... 8
Location and piping .............................................................................................................................. 8
Admissible external forces and torques on pump flanges .................................................................. 11
Protecting the pump against Dry Running ......................................................................................... 12
Loss of liquid supply ....................................................................................................................... 12
Low inlet pressure .......................................................................................................................... 12
`Dead-heading'............................................................................................................................... 12
Electronic dry running protection ....................................................................................................... 12
Electrical connection .......................................................................................................................... 13
Connecting the electric motor ........................................................................................................ 13
Check direction of rotation ................................................................................................................. 14
Long-coupled pumps only .............................................................................................................. 14
Direction of rotation ....................................................................................................................... 15
OPERATION .......................................................................................................................................... 16
Supervision ........................................................................................................................................ 16
Essential running precautions ............................................................................................................ 16
Priming the pump .............................................................................................................................. 19
Pump operation ................................................................................................................................. 20
MAINTENANCE ..................................................................................................................................... 22
Supply isolation .................................................................................................................................. 22
Maintenance schedule ....................................................................................................................... 22
DISASSEMBLY ....................................................................................................................................... 23
Strong magnet essential precautions ................................................................................................. 23
Decommissioning the pump .............................................................................................................. 24
Disassembling the pump .................................................................................................................... 24

CONTENTS
SVM Series Operating & Instruction Manual Page v
REASSEMBLY ........................................................................................................................................ 28
Inspection prior to reassembly ........................................................................................................... 28
Reassembling the pump ..................................................................................................................... 28
Pumping dense and/or viscous liquids ................................................................................................ 30
Reassembly of the complete pump .................................................................................................... 30
Replacing the external magnet and motor or bearing housing ........................................................... 31
Long-coupled units ......................................................................................................................... 31
Refitting the external magnet (with its bearing housing or motor) to the pump ............................ 33
Refitting the coupling (long-coupled units only) ............................................................................. 33
Typical cross-section .............................................................................................................................. 34
SVM 1 ................................................................................................................................................. 34
SVM 1.5 .............................................................................................................................................. 36
SVM 2 ................................................................................................................................................. 38
Troubleshooting..................................................................................................................................... 40
Notes .....................................................................................................................................................46

GENERAL
SVM Series Operating & Instruction Manual Page 1
GENERAL
AxFlow Aturia SVM pumps are seal less magnetically coupled sliding vane pumps. Details of the pump
type and model, serial number and operating data are indicated on the pump nameplate.
The pump must be installed and operated in full compliance with these instructions. The pump may not
be operated outside the limits specified on the nameplate and within this manual. The pump should
only be operated by skilled trained personnel. The manufacturer will not accept liability if these
instructions are not followed.
This manual does not take into account any specific local regulations or bylaws that may be applicable,
and it is the responsibility of the installer to ensure compliance with such regulations.
Noise levels
The following table reports the noise level produced by AxFlow Aturia SVM-series pumps running with
in their operating limits and installed according to the instructions given in this manual (average values
measured in free field at 1 meter from the pump set and elaborated according to ISO standard R1680 –
curve A). The values are referred to groups with AxFlow standard electric motors. For other motors the
table values shall be compared to the actual used motors.
MOTOR
FRAME SIZE
MOTOR SPEED
4 Poles 6 Poles
63 60 58
71 60 58
80 61 59
90 62 60
100 62 60

GENERAL
SVM Series Operating & Instruction Manual Page 2
Area of operation
AxFlow Aturia SVM pump sets may be installed within a building or externally. Wherever installed,
protect the pump from frost, snow and flooding.
Care must be taken to ensure that cold weather will not cause the pump or pipes to freeze, and
installers may wish to consider lagging or trace heating.
If supplied, standard electric motors are only suitable for operation in safe areas, free from the danger
of explosive liquids or gases.
Spare parts
Spare parts are available from AxFlow throughout Great Britain. Please quote the pump model and
serial number for all spares enquiries.

GENERAL
SVM Series Operating & Instruction Manual Page 3
Transport
Check the nameplate on the pump against the receiving and purchase order documents to be sure that the
correct size of pump and materials of construction have been supplied. If a motor has been supplied, check
that the power, speed, and voltage are correct.
Prior to unpacking, check for physical damage to the packing and the pump unit and notify the forwarding
agent IMMEDIATELY if any damage is found.
Check that the port covers are intact. If not, check whether foreign objects may have found their way into the
pump casing through the ports. Remove the port covers only when you are ready to connect the pipes to the
pump.
When shipped, the pumps are suitable for short-term storage only. If long-term storage is necessary
before the pump will be put into operation, we suggest that you contact your pump supplier for long-
term storage recommendations.
Check for free rotation of the pump. If the pump is close-coupled to the motor, remove the fan cover from the
motor and rotate the fan by hand. To check long-coupled pumps for free rotation, remove the coupling guard
and rotate the pump and motor shafts at the flexible coupling.
Storage
If not to be used immediately, the pumpset should be stored in a dry warm and vibration free
environment.
If an electric motor is supplied as the drive, then before putting into service, the motor winding
insulation should be tested. If the reading is below 10 Mega ohms, move to a warm dry place for a few
hours until the motor insulation value rises.
Do not remove flange covers until the pump is ready to be connected to the pipework.

GENERAL
SVM Series Operating & Instruction Manual Page 4
Drivers
AxFlow Aturia SVM pumps may be driven by an electric motor through a shaft -to-shaft coupling.
There are particular points which can affect the pump:
· Shaft -to-shaft flexible couplings must be properly aligned, as poor alignment will
cause high loads on the pump bearings. Couplings must be suitably rated, and provide
sufficient flexibility to prevent shock forces and oscillating loads from being
transmitted to the pump shaft. This is particularly important for diesel engine drives.
· When designing the drive system and prime mover, take into account that the pump
dismantles by removing the rotating element out from the back of the pump casing.
Sufficient space should be allowed to facilitate dismantling of the pump.