SPX FLOW CombiFlexBloc Series User manual

CFB/EN (1808) 2.4
CombiFlexBloc
Orginal instructions
Read and understand this manual prior to operating or servicing this product
INSTRUCTION MANUAL
Vertical centrifugal pump in monobloc execution

EC/EN (1712) 6.0 1
EC Declaration of conformity
(Directive 2006/42/EC, appendix II-A)
Manufacturer
SPX Flow Technology Assen B.V.
Dr. A.F. Philipsweg 51
9403 AD Assen
The Netherlands
hereby declares that all pumps member of productfamilies CombiBloc, CombiBlocHorti,
CombiChem, CombiDirt, CombiFlex(U)(B), CombiPrime H, CombiLine, CombiLineBloc,
CombiMag, CombiMagBloc, CombiNorm, CombiPro(L)(M)(V), CombiPrime V, CombiSump,
CombiTherm, CombiWell, FRE, FRES, FREF, FREM, KGE(L), KGEF, HCR, MCH(W)(S),
MCHZ(W)(S), MCV(S), PHA, MDR whether delivered without drive (last position of serial
number = B), or delivered as an assembly with drive (last position of serial number = A),
are in conformity with the provisions of Directive 2006/42/EC (as altered most recently)
and where applicable the following directives and standards:
• EC directive 2014/35/EU, "Electric equipment for use within certain voltage limits"
• standards EN-ISO 12100 part 1 & 2, EN 809
The pumps to which this declaration refers may only be put into operation after they have
been installed in the way prescribed by the manufacturer, and, as the case may be, after
the complete system of which these pumps form part, has been made to fulfil the
requirements of Directive 2006/42/EC (as altered most recently).
Declaration of incorporation
(Directive 2006/42/EC, appendix II-B)
Manufacturer
SPX Flow Technology Assen B.V.
Dr. A.F. Philipsweg 51
9403 AD Assen
The Netherlands
hereby declares that the partly completed pump (Back-Pull-Out unit), member of
productfamilies CombiBloc, CombiBlocHorti, CombiChem, CombiDirt, CombiFlex(U)(B),
CombiPrime H, CombiLine, CombiLineBloc, CombiMag, CombiMagBloc, CombiNorm,
CombiPro(L)(M)(V), CombiTherm, CombiPrime V, FRE, FRES, FREF, FREM, KGE(L), KGEF,
HCR, PHA, MDR is in conformity with the following standards:
• EN-ISO 12100 parts 1 & 2, EN 809
and that this partly completed pump is meant to be incorporated into the specified pump
unit and may only be put into use after the complete machine of which the pump under
consideration forms part has been made and declared to comply with that directive.
Assen, December 1st 2017
B. Peek,
Managing Director

2EC/EN (1712) 6.0

INT/EN (1512) 1.2 3
Instruction manual
All technical and technological information in this manual as well as possible drawings
made available by us remain our property and shall not be used (otherwise than for the
operation of this pump), copied, duplicated, made available to or brought to the notice of
third parties without our prior written consent.
SPXFLOW is a global multi-industry manufacturing leader. The company's highly-
specialized, engineered products and innovative technologies are helping to meet rising
global demand for electricity and processed foods and beverages, particularly in
emerging markets.
SPX Flow Technology Assen B.V.
P.O. B ox 9
9400 AA Assen
The Netherlands
Tel. [phone]
Fax. [phone]
Copyright © 2015 SPXFLOW Corporation

4INT/EN (1512) 1.2

CFB/EN (1808) 2.4 5
CombiFlexBloc
Table of Contents
1 Introduction 9
1.1 Preface 9
1.2 Safety 9
1.3 Guarantee 10
1.4 Inspection of delivered items 10
1.5 Instructions for transport and storage 10
1.5.1 Weight 10
1.5.2 Use of pallets 10
1.5.3 Hoisting 11
1.5.4 Storage 11
1.6 Ordering parts 12
2 General 13
2.1 Pump description 13
2.2 Type code 13
2.3 Serial number 14
2.4 Applications 14
2.5 Construction 14
2.5.1 Design 14
2.5.2 Pump casing/impeller/suction bend 14
2.5.3 Shaft sealing 14
2.5.4 Bearing construction 14
2.5.5 Foot pads 15
2.6 Application area 15
2.7 Re-use 15
2.8 Scrapping 15
3Installation 17
3.1 Safety 17
3.2 Preservation 17
3.3 Environment 17
3.4 Installation of a pump unit 17
3.5 Piping 18
3.6 Accessories 18
3.7 Connecting the electric motor 18
4 Commissioning 19
4.1 Inspection of the pump 19
4.2 Inspection of the motor 19
4.3 Preparing the unit for commissioning 19

6CFB/EN (1808) 2.4
4.4 Checking the sense of rotation 19
4.5 Start-up 19
4.6 Adjustment of shaft sealing 20
4.6.1 Stuffing box packing 20
4.6.2 Mechanical seal 20
4.7 Pump in operation 20
4.8 Noise 20
5 Maintenance 21
5.1 Regular maintenance 21
5.2 Shaft sealing 21
5.2.1 Stuffing box packing 21
5.2.2 Mechanical seal 21
5.3 Lubrication of the bearings 21
5.4 Environmental influences 21
5.5 Noise 22
5.6 Motor 22
5.7 Faults 22
6 Problem solving 23
7 Disassembly and assembly 25
7.1 Precautionary measures 25
7.2 Special tools 25
7.3 Liquid draining 25
7.4 Disassembly and assembly Top Pull Out unit 26
7.4.1 Disassembly Top Pull Out unit 26
7.4.2 Assembly Top Pull Out unit 26
7.5 Replacing the impeller and the wear ring 27
7.5.1 Disassembling of the impeller 27
7.5.2 Mounting the impeller 27
7.5.3 Disassembling the wear ring 28
7.5.4 Assembling the wear ring 28
7.6 Stuffing box packing S2, S3, S4 29
7.6.1 Instruction for assembling and disassembling stuffing box packing 29
7.6.2 Replacing the stuffing box packing S2, S3, S4 30
7.6.3 Mounting a new stuffing box packing S2, S3, S4 30
7.6.4 Disassembling the shaft sleeve 31
7.6.5 Mounting the shaft sleeve 31
7.7 Mechanical seal 32
7.7.1 Instructions for mounting a mechanical seal 32
7.7.2 Disassembling a mechanical seal M0 33
7.7.3 Assembling a mechanical seal M0 33
7.7.4 Disassembling a mechanical seal M1 34
7.7.5 Assembling a mechanical seal M1 34
7.7.6 Disassembling a mechanical seal M2-M3 35
7.7.7 Assembling a mechanical seal M2-M3 36
7.7.8 Removing the electric motor 36
7.7.9 Mounting the electric motor 36
7.8 Replacing the stub shaft and the motor for M0 37
7.8.1 Disassembling the stub shaft and the motor 37
7.8.2 Assembling the stub shaft and the motor 38
8Dimensions 39
8.1 Dimensions delivery flange 39
8.2 Dimensions suction flange 40

CFB/EN (1808) 2.4 7
CombiFlexBloc
8.3 Dimensions foot pads K1 40
8.4 Dimensions foot pads K3 41
8.5 Dimensions foot pads 200-200 / 250B-315 K3 41
8.6 Pump dimensions K1, with suction bend 42
8.6.1 Pump dimensions M0 43
8.6.2 Pump dimensions S2/S3/S4/M1/M2/M3 44
8.7 Pump dimensions K3, with suction bend 45
8.7.1 Pump dimensions M0 46
8.7.2 Pump dimensions S2/S3/S4/M1/M2/M3 47
8.8 Pump dimensions 200-200 / 250B-315 K3, with suction bend 48
8.8.1 Pump dimensions M0 49
8.8.2 Pump dimensions S2/S3/S4/M1/M2/M3 49
9Parts 51
9.1 Ordering parts 51
9.1.1 Order form 51
9.1.2 Recommended spare parts 51
9.2 Pump construction K1 52
9.2.1 Sectional drawing M0 52
9.2.2 Parts list M0 53
9.2.3 Sectional drawing M1/M2/M3/S2/S3/S4 54
9.2.4 Parts list M1/M2/M3/S2/S3/S4 55
9.3 Pump construction K3 56
9.3.1 Sectional drawing M1/M2/M3/S2/S3/S4 56
9.3.2 Parts list M1/M2/M3/S2/S3/S4 57
9.4 Stuffing box packing S2-S3 58
9.4.1 Stuffing box packing S2-S3 58
9.4.2 Parts list stuffing box packing S2-S3 58
9.5 Stuffing box packing S4 59
9.5.1 Stuffing box packing S4 59
9.5.2 Parts list stuffing box packing S4 59
9.6 Shaft sealing group M1 60
9.6.1 Mechanical seal MG12-G60 60
9.6.2 Parts list mechanical seal MG12-G60 60
9.7 Shaft sealing group M2-M3 61
9.7.1 Mechanical seal M7N-H7N 61
9.7.2 Parts list mechanical seal M7N-H7N 61
9.8 Suction bend K1/K3 62
9.8.1 Sectional drawing suction bend, K1 62
9.8.2 Parts of suction bend, K1 62
9.8.3 Sectional drawing suction bend, K3 63
9.8.4 Parts of suction bend, K3 63
9.8.5 Sectional drawing suction bend 200-200 / 250B-315 64
9.8.6 Parts of suction bend 200-200 / 250B-315 64
10 Technical data 65
10.1 Bearing groups 65
10.2 Mounting media 65
10.2.1 Recommended mounting grease 65
10.2.2 Recommended locking liquids 65
10.3 Tightening moments 66
10.3.1 Tightening moments for bolts and nuts 66
10.3.2 Tightening moments for cap nut 66
10.4 Maximum speed 66
10.5 Pressure in shaft sealing space for shaft sealing groups M1-M2-M3 67

8CFB/EN (1808) 2.4
10.6 Pressure near the impeller hub for shaft sealing groups S2-S3-S4 68
10.7 Hydraulic performance 69
10.8 Noise data 71
10.8.1 Pump noise as a function of pump power 71
10.8.2 Noise level of entire pump unit 72
Index 73
Order form for spare parts 75

CFB/EN (1808) 2.4 Introduction 9
CombiFlexBloc
1 Introduction
1.1 Preface
This manual is intended for technicians and maintenance staff and for those who are in
charge of ordering spare parts.
This manual contains important and useful information for the proper operation and
maintenance of this pump. It also contains important instructions to prevent potential
accidents and damage, and to ensure safe and fault-free operation of this pump.
! Read this manual carefully before commissioning the pump, familiarize
yourself with the operation of the pump and strictly obey the instructions!
The data published here comply with the most recent information at the time of going to
press. However they may be subject to later modifications.
SPXFLOW reserves the right to change the construction and design of the products at
any time without being obliged to change earlier deliveries accordingly.
1.2 Safety
This manual contains instructions for working safely with the pump. Operators and
maintenance staff must be familiar with these instructions.
Installation, operation and maintenance has to be done by qualified and well prepared
personnel.
Below is a list of the symbols used for those instructions and their meaning:
Personal danger for the user. Strict and prompt observance of the
corresponding instruction is imperative!
! Risk of damage or poor operation of the pump. Follow the corresponding
instruction to avoid this risk.
➢Useful instruction or tip for the user.
Items which require extra attention are shown in bold print.
This manual has been compiled by SPXFLOW with the utmost care. Nevertheless
SPXFLOW cannot guarantee the completeness of this information and therefore
assumes no liability for possible deficiencies in this manual. The buyer/user shall at all
times be responsible for testing the information and for taking any additional and/or
deviating safety measures. SPXFLOW reserves the right to change safety instructions.

10 Introduction CFB/EN (1808) 2.4
1.3 Guarantee
SPXFLOW shall not be bound to any guarantee other than the guarantee accepted by
SPXFLOW. In particular, SPXFLOW will not assume any liability for explicit and/or
implicit guarantees such as but not limited to the marketability and/or suitability of the
products supplied.
The guarantee will be cancelled immediately and legally if:
• Service and/or maintenance is not undertaken in strict accordance with the
instructions.
• The pump is not installed and operated in accordance with the instructions.
• Necessary repairs are not undertaken by our personnel or are undertaken without our
prior written permission.
• Modifications are made to the products supplied without our prior written permission.
• The spare parts used are not original SPXFLOW parts.
• Additives or lubricants used are other than those prescribed.
• The products supplied are not used in accordance with their nature and/or purpose.
• The products supplied have been used amateurishly, carelessly, improperly and/or
negligently.
• The products supplied become defective due to external circumstances beyond our
control.
All parts which are liable to wear are excluded from guarantee. Furthermore, all
deliveries are subject to our “General conditions of delivery and payment”, which will be
forwarded to you free of charge on request.
1.4 Inspection of delivered items
Check the consignment immediately on arrival for damage and conformity with the advice
note. In case of damage and/or missing parts, have a report drawn up by the carrier at
once.
1.5 Instructions for transport and storage
1.5.1 Weight
A pump or a pump unit is generally too heavy to be moved by hand. Therefore, use the
correct transport and lifting equipment. Weight of the pump or pump unit are shown on
the label on the cover of this manual.
1.5.2 Use of pallets
Usually a pump or pump unit is shipped on a pallet. Leave it on the pallet as long as
possible to avoid damages and to facilitate possible internal transport.
! When using a forklift always set the forks as far apart as possible and lift the
package with both forks to prevent it from toppling over! Avoid jolting the
pump when moving it!

CFB/EN (1808) 2.4 Introduction 11
CombiFlexBloc
1.5.3 Hoisting
When hoisting a pump or complete pump units the straps must be fixed in accordance
with figure 1.
When lifting a pump or a complete pump unit always use a proper and sound
lifting device, approved to bear the total weight of the load!
Never go underneath a load that is being lifted!
! If the electric motor is provided with a lifting eye, this lifting eye is intended
only for the purpose of carrying out service activities to the electric motor!
The lifting eye is designed to bear the weight of the electric motor only!
It is NOT permitted to lift a complete pump unit at the lifting eye of an electric
motor!
1.5.4 Storage
If the pump is not to be used immediately the stub shaft must be turned by hand twice
per week.
Figure 1: Lifting instructions for pump unit.

12 Introduction CFB/EN (1808) 2.4
1.6 Ordering parts
This manual contains a survey of the spare parts recommended by SPXFLOW as well as
the instructions for ordering them. A fax-order form is included in this manual.
You should always state all data stamped on the type plate when ordering parts and in
any other correspondence regarding the pump.
➢This data is also printed on the label on the front of this manual.
If you have any questions or require further information with regard to specific subjects,
then do not hesitate to contact SPXFLOW.

CFB/EN (1808) 2.4 General 13
CombiFlexBloc
2 General
2.1 Pump description
The CombiFlexBloc is a range of vertical non-self-priming centrifugal pumps. The
discharge and suction connection can be mounted in different positions in relation to
each other. The pump is driven by e vertical flange motor with extended motor shaft.
There is also a version with a IEC-standard flange motor and a stub shaft. The pump and
the electric motor are assembled as a compact unit by means of a lantern piece. The
impeller is mounted directly to the motor shaft/stub shaft. Because of their modular lay-
out, constructional components are widely interchangeable, also with other pump types
of the Combi system.
2.2 Type code
Pumps are available in various designs. The main characteristics of the pump are shown
in the type code.
Example: CFB 40-200 G1 M1 K1
Pump family
CFB CombiFlexBloc
Pump size
40-200 diameter discharge connection [mm] - nominal impeller diameter [mm]
Pump casing material
Gcast iron
Bbronze
Impeller material
1cast iron
2bronze
3aluminium bronze
Shaft sealing
S2 stuffing box packing, with shaft sleeve
S3 stuffing box packing, with shaft sleeve and lantern ring
S4 stuffing box packing, with shaft sleeve and cooling jacket
M0 mechanical seal, unbalanced, stub shaft
M1 mechanical seal, unbalanced
M2 mechanical seal, unbalanced, shaft sleeve
M3 mechanical seal, balanced, shaft sleeve
Foot pads
K1 profiled steel elements
K3 tubular construction with opening for suction bend

14 General CFB/EN (1808) 2.4
2.3 Serial number
Serial number of the pump or pump unit are shown on the name plate off the pump and
on the label on the cover of this manual.
2.4 Applications
• In general, this pump can be used for thin, clean or slightly polluted liquids. These
liquids should not affect the pump materials.
• Further details about the application possibilities of your specific pump are mentioned
in the order confirmation and/or in the data sheet enclosed with the delivery.
• Do not use the pump for purposes other than those for which it is delivered without
prior consultation with your supplier.
Using a pump in a system or under system conditions (liquid, working
pressure, temperature, etc.) for which it has not been designed may hazard
the user!
2.5 Construction
2.5.1 Design
The design is characterized by a compact construction. The pump is mounted to a
vertical flange motor by means of a lantern piece and stub shaft or a special electric
motor with an extended shaft. The pump cover is clamped between the pump casing and
the lantern piece.
The main components are described below:
2.5.2 Pump casing/impeller/suction bend
These are the parts that get into contact with the pumped liquid. For each individual
pump type there is only one construction of the pump casing and the impeller. The pump
casing and the suction bend are available in cast iron and in bronze, the impeller in cast
iron, bronze and aluminium bronze. The stub shaft is made of stainless steel. The square
suction bend has been designed in such a way that resistance is low an that all the same
a low position of the pump in relation to the floor is possible.
2.5.3 Shaft sealing
The shaft seal is available in various variants. There are 3 constructions with a stuffing
box, for instance with a water-cooled cover, and there are 4 constructions with a
mechanical seal, both unbalanced and balanced.
2.5.4 Bearing construction
The pump shaft bearing is provided by the motor bearings. The selection of the pump/
motor combination is such that the bearings of the applied electric motors can absorb
the axial and radial forces without the bearing life being affected. The electric motors
must be provided with a fixed bearing.
Example: 01-1000675A
01 year of manufacture
100067 unique number
5number of pumps
Apumpwithmotor
Bpump with free shaft end

CFB/EN (1808) 2.4 General 15
CombiFlexBloc
2.5.5 Foot pads
The foot pads consist of profiled steel elements or of a tubular construction with an
opening for the passage of the suction bend
2.6 Application area
The application area globally looks as follows:,
However, the maximum allowable pressures and temperatures depend strongly on the
selected materials and components. Also working conditions may cause differences. For
more detailed information see chapter 10 "Technical data".
2.7 Re-use
The pump may only be used for other applications after prior consultation with
SPXFLOW or your supplier. Since the lastly pumped medium is not always known, the
following instructions should be observed:
1 Flush the pump properly.
2 Make sure the flushing liquid is discharged safely (environment!)
Take adequate precautions and use the appropriate personal protection
means like rubber gloves and spectacles!
2.8 Scrapping
If it has been decided to scrap a pump, the same flushing procedure as described for
Re-use should be followed.
Table 1: Application area.
Maximum value
Capacity 720 m3/h
Discharge head 105 m
System pressure 10 bar
Temperature 110 °C

16 General CFB/EN (1808) 2.4

CFB/EN (1808) 2.4 Installation 17
CombiFlexBloc
3Installation
3.1 Safety
• Read this manual carefully prior to installation and commissioning. Non-observance of
these instructions can result in serious damage to the pump and this will not be
covered under the terms of our guarantee. Follow the instructions given step by step.
• Ensure that the pump can not be started if work has to be undertaken to the pump
during installation and the rotating parts are insufficiently guarded.
• Depending on the design the pumps are suitable for liquids with a temperature of up
to 110°C. When installing the pump unit to work at 65°C and above the user should
ensure that appropriate protection measures and warnings are fitted to prevent
contact with the hot pump parts.
• If there is danger of static electricity, the entire pump unit must be earthed.
• If the pumped liquid is harmful to men or the environment, take appropriate measures
to drain the pump safely. Possible leakage liquid from the shaft seal should also be
discharged safely.
3.2 Preservation
In order to prevent corrosion, the inside of the pump is treated with a preserving agent
before leaving the factory.
Before commissioning the pump remove any preserving agents and flush the pump
thoroughly with hot water.
3.3 Environment
• The foundation must be hard, level and flat.
• The area in which the pump is installed must be sufficiently ventilated. An ambient
temperature or air humidity which is too high, or a dusty environment, can have a
detrimental effect on the operation of the electric motor.
• There should be sufficient space around the pump unit to operate and if necessary
repair it.
• Above the cooling air inlet of the motor there must be a free area of at least ¼ of the
electric motor diameter, to ensure unobstructed air supply.
3.4 Installation of a pump unit
If the unit is delivered as a complete set, pump and motor are assembled in the works. In
that case the impeller has already been properly adjusted axially. In case of permanent
arrangement, level the pump on the foundation by means of shims and carefully tighten
the nuts of the foundation bolts.

18 Installation CFB/EN (1808) 2.4
3.5 Piping
• The piping to the suction and delivery connections must fit exactly and must not be
subject to stress during operation.
• The passage of the suction pipe must be amply dimensioned. This pipe should be as
short as possible and run towards the pump in such a way that no air pockets can
arise. If this is not possible, a venting facility should be provided at the highest point of
the pipe.
• If the inside diameter of the suction pipe is larger than the suction connection of the
pump, an eccentric reducer should be applied to prevent air pockets and whirls. See
figure 2
• Sudden changes in the rate of flow can lead to high pressure impulses in the pump
and the piping (water shock). Therefore, do not use quick-acting closing devices,
valves etc.
3.6 Accessories
• Fit any parts that may have been supplied separately.
• If necessary, mount a foot valve at the bottom of the suction pipe. Combine this foot
valve with a suction strainer to prevent impurities from being drawn in.
• When mounting, place temporarily (for the first 24 operating hours) a fine gauze
between suction flange and suction pipe to prevent internal pump parts from being
damaged by foreign matter. If the risk of damage continues to exist, fit a permanent
filter.
• In case the pump is provided with an isolation, special attention has to be paid To
temperature limits of shaft seal and bearing.
3.7 Connecting the electric motor
The electric motor must be connected to the mains by an approved
electrician, according to the locally prevailing regulations of the electricity
company.
• Refer to the instruction manual belonging to the electric motor.
• If possible, fit a working switch as close as possible to the pump.
Figure 2: Eccentric reducer to suction flange.