TapFlo CTS I User manual

Read this instruction manual carefully,
before you install and operate the pump.
2014 rev. 1
Instructions for installation, start up, operation and maintenance.
Self-priming CTS H pumps in electro polished AISI 316L stainless steel.
Self-priming CTS I pumps in glass blasted AISI 316L stainless steel.
Pump models:
CTS I
CTS H
With 2900 rpm motor:
With 2900 rpm motor:
CTS I CC-22
CTS H CC-22
CTS I CE-22
CTS H CE-22
CTS I DD-40
CTS H DD-40
CTS I DF-40
CTS H DF-40
CTS I EF-55
CTS H EF-55
CTS I EG-55
CTS H EG-55
CTS I EF-75
CTS H EF-75
CTS I EG-75
CTS H EG-75

CONTENTS
IOM manual CTS self-priming pumps 2
0. GENERAL ................................................................................................................................... 5
0.1. Introduction................................................................................................................................ 5
0.2. Warning symbols....................................................................................................................... 5
0.3. Qualification and training of personnel................................................................................... 5
1. INSTALLATION ................................................................................................................................ 6
1.1. Operation principle.................................................................................................................... 6
1.2. Receiving inspection................................................................................................................. 6
1.3. Storage ....................................................................................................................................... 6
1.4. Foundation ................................................................................................................................. 6
1.5. Environment............................................................................................................................... 7
1.6. Suction and discharge piping .................................................................................................. 7
1.6.1. Connection of discharge pipe ........................................................................................ 7
1.6.2. Connection of suction pipe ............................................................................................ 7
1.7. Health and safety ....................................................................................................................... 7
1.7.1. Protection ......................................................................................................................... 7
1.7.2. Electrical safety ............................................................................................................... 8
1.7.3. Chemical hazard .............................................................................................................. 8
1.7.4. Dry running ...................................................................................................................... 8
1.7.5. Noise level ........................................................................................................................ 8
1.7.6. Temperature hazards ...................................................................................................... 8
1.7.7. Rotating parts .................................................................................................................. 8
1.7.8. Cleaning and disinfection ............................................................................................... 8
1.8. Example of installation ............................................................................................................. 9
1.9. Instruments ................................................................................................................................ 9
1.9.1. Electric power ................................................................................................................ 10
1.9.2. Optional instruments..................................................................................................... 10
1.9.3. Thermometer .................................................................................................................. 10
1.10. Motor connection..................................................................................................................... 10
2. OPERATION ................................................................................................................................... 11
2.1. Start-up ..................................................................................................................................... 11
2.1.1. Starting the pump .......................................................................................................... 11
2.1.2. Restarting after power shut-off .................................................................................... 11
2.2. Stopping the pump .................................................................................................................. 12
2.3. Cleaning and disinfection ....................................................................................................... 12
2.3.1. Cleaning procedure ....................................................................................................... 12
3. MAINTENANCE .............................................................................................................................. 13
3.1. Inspections............................................................................................................................... 13
3.2. Location of faults..................................................................................................................... 13
3.3. Disassembly of the pump ....................................................................................................... 14

CONTENTS
IOM manual CTS self-priming pumps 3
3.3.1. Disassembly procedure ................................................................................................ 14
3.4. Assembly of the pump ............................................................................................................ 15
3.4.1. Test run........................................................................................................................... 17
4. SPARE PARTS ............................................................................................................................... 18
4.1. Spare parts drawing ................................................................................................................ 18
4.2. Spare parts list......................................................................................................................... 18
4.3. Recommended spare parts .................................................................................................... 19
4.4. How to order parts................................................................................................................... 19
5. DATA............................................................................................................................................... 20
5.1. Pump code ............................................................................................................................... 20
5.2. Dimensions .............................................................................................................................. 21
5.3. Materials, data and limits........................................................................................................ 22
5.4. Mounting torques and dimensions of screws/nuts ............................................................. 22
5.5. Performance curves ................................................................................................................ 23
6. WARRANTY.................................................................................................................................... 25
6.1. Returning parts ........................................................................................................................ 25
6.2. Warranty ................................................................................................................................... 25
6.3. Warranty form .......................................................................................................................... 27

CE CERTIFICATE
IOM manual CTS self-priming pumps 4

0. GENERAL
IOM manual CTS self-priming pumps 5
0. GENERAL
0.1. Introduction
CTS is an open impeller self-priming centrifugal pump, manufactured from stainless steel
AISI 316L. CTS H with excellent electro polished surfaces, FDA approved seals, high
finish and mechanical strength, meet the demands from food and sanitary applications,
CTS I with AISI 316L chemical resistance and mechanical strength is a reliable choice.
The self-priming feature allows to use the pump in applications where standard CT
pumps do not prove useful. The CTS pump is capable of creating up to 4,5 m of suction
lift.
With proper attention to maintenance, CTS pumps will give efficient and trouble free
operation. This instruction manual will familiarise operators with detailed information
about installing, operating and maintaining the pump.
0.2. Warning symbols
The following warning symbols are present in this instruction manual. This is what they
say:
This symbol stands next to all safety instructions in this instruction manual
where danger to life and limb may occur. Observe these instructions and
proceed with utmost caution in these situations. Inform also other users of all
safety instructions. In addition to the instructions in this instruction manual, the
general safety and accident prevention regulations must be observed.
This signal stands at points in this instruction manual of particular importance
for compliance with regulations and directives, for correct work flow and for
the prevention of damage to and destruction of the complete dampener or its
subassemblies.
This symbol signals possible danger caused by the presence of electric fields
or live wires.
0.3. Qualification and training of personnel
The personnel in charge of installation, operation and maintenance of the pumps we
produce must be qualified to carry out the operations described in this manual. Tapflo
shall not be held responsible for the training level of personnel and for the fact that they
are not fully aware of the contents of this manual.

1. INSTALLATION
IOM manual CTS self-priming pumps 6
1. INSTALLATION
1.1. Operation principle
In order for the priming action to be achieved, the pump casing has to be filled with liquid
to a level above the impeller (1). When the pump starts its operation, it is slowly sucking
out the air from the suction line thus creating negative pressure and lifting the product. The
air is mixed with the liquid in the pump casing (2). In order to achieve the self-priming
capability, the shut-off / regulation valve on the discharge side must be opened. The air
escapes the casing through the discharge line while the liquid returns to the impeller as it
has higher specific gravity than the liquid/air mixture. This process continues until the
suction line is completely free of air and the pump can operate as a standard centrifugal
pump (3).
1.2. Receiving inspection
Although precaution is taken by us when packing and shipping, we urge you to carefully
check the shipment on receipt. Make sure that all parts and accessories listed on the
packing list are accounted for. Immediately report any damage or shortage to the transport
company and to us.
1.3. Storage
If the equipment is to be stored prior to installation, place it in a clean location. Do not
remove the protective covers from the suction and discharge which have been fastened to
keep pump internals free of debris. Clean the pump thoroughly before installation.
When in storage, turn the shaft by hand at least twice per week.
1.4. Foundation
The pump-motor unit must stand on and be fixed to a sufficiently rigid structure that can
support the entire perimeter on which the unit stands. The foundation on a firm bottom is
the most satisfactory. Once the pump is in position, adjust level with metal shims between
the feet and the surface on which it stands. Check that the feet of the pump motor unit
stand well on each of them. The surface on which the foundation stands must be flat and
horizontal. If the unit is fitted on a steel structure, make sure that it is supported so that the
feet do not warp. In any case, it is advisable to fit some anti-vibration rubber pieces
between the pump and the brickwork. The motor needs an additional stand as its level is
higher than that of the pump casing. As an option the pump can be ordered with feet for
the motor. For close-coupled type, pump motor alignment is not required.
123

1. INSTALLATION
IOM manual CTS self-priming pumps 7
1.5. Environment
There should be enough space in the vicinity of the pump in order to operate,
maintain and repair it.
The area in which the pump is operated, must be sufficiently ventilated. Excessive
temperature, humidity or dirt may affect the pump operation’/
Behind the cooling fan of the motor there must be sufficient room for the hot air to
escape the motor.
1.6. Suction and discharge piping
A pump is generally part of a piping system that can include a number of components such
as valves, fittings, filters, expansion joints, instruments, etc. The way the piping is arranged
and the positioning of the components has a great influence on the operation and the
lifetime of the pump. The pump cannot be used as a support for the components
connected to it.
The flow of liquid from the pump must be as even as possible. It is advisable to avoid any
tight bends or drastic reductions of diameters that may cause flow resistance in the
installation. In case of diameter reduction, it is advisable to use appropriate conical
reductions (possibly eccentric on suction side and concentric on discharge side) at
changes of diameter and at a minimum distance from pump connections of five diameters.
NOTE! The pump casing is designed for maximal work pressure of 2,6 bar (for CTS C)
and 4,5 bar (for CTS D,E), therefore exceeding these limits is prohibited.
1.6.1. Connection of discharge pipe
A shut-off / regulation valve is normally fitted on the discharge side. It cuts off the pump
from the line and adjusts the output. Never adjust flow rate using the valve on the suction
pipe.
NOTE! When starting the pump, the valve on the discharge side must be opened to allow
the pump to self-prime.
1.6.2. Connection of suction pipe
The suction piping is very important for the correct operation of the pump assembly. It
must be as short and as direct as possible. If a longer suction line is unavoidable, the
diameter should be large enough, i.e. at least as the inlet connection on the pump, to
ensure less flow resistance. In any case, suction must be carried out properly avoiding any
air locks.
It is recommended to use check valve in the suction line to avoid siphoning when the pump
stops. A foot valve on the suction side can prove useful when suction height is big. It
allows to shorten the time of pump self-priming.
1.7. Health and safety
The pump must be installed according to local and national safety rules.
The pumps are constructed for particular applications. Do not use the pump on
applications different from that for which it was sold without consulting us to
ascertain its suitability.
1.7.1. Protection
In the interest of health and safety it is essential to wear protective clothing and safety
goggles when operating, and/or working in the vicinity of Tapflo pumps.

1. INSTALLATION
IOM manual CTS self-priming pumps 8
1.7.2. Electrical safety
Do not carry out any maintenance or/and operation on the pump while it is running or
before it has been disconnected from the power supply. Avoid any danger caused by
electric power (for details see current regulations in force). Check that electrical
specifications on the data plate are equivalent to the power supply to which it will be
connected.
1.7.3. Chemical hazard
Whenever the pump is to be used for pumping a different liquid, it is essential to clean the
pump beforehand in order to avoid any possible reaction between the two products.
1.7.4. Dry running
Do not start nor carry out running tests before filling the pump with liquid. Always avoid dry
operation of the pump. Start the pump when it is completely filled and with the valve on the
discharge side opened.
1.7.5. Noise level
CT pumps, including the motor, in normal operating conditions produce a sound level
below 80 dB(A). The major sources of noise are: liquid turbulence in the installation,
cavitation or any other abnormal operation that is independent from the pump construction
nor the pump manufacturer. The user must provide suitable protective means if the
sources of noise could produce a harmful noise level for operators and for the environment
(in compliance with current local regulations).
1.7.6. Temperature hazards
Raised temperature can cause damage on the pump and/or piping and may also be
hazardous for personnel in the vicinity of the pump/piping. The hot or cold parts of the
machine must be protected to avoid accidental contacts
1.7.7. Rotating parts
Do not tamper with the protection of the rotating parts, do not touch or approach rotating
parts in movement.
1.7.8. Cleaning and disinfection
Cleaning and disinfection of the pump system is of greatest importance when the pump is
used in a food process installation. Use of a pump system that is NOT cleaned or
disinfected can cause contamination of the product.

1. INSTALLATION
IOM manual CTS self-priming pumps 9
1.8. Example of installation
1) YES: Gate valve (may also be near pump in case of long piping)
2) With positive head: tilt of piping towards pump
3) YES: line strainer if particles are present
4) NO: air pockets –the circuit must be short and straight
5) YES: pipe fastening
6) Suction line as short and direct as possible
7) YES: attachment for gauge or safety pressure switch
8) YES: adjusting gate valve on outlet
9) Bends placed after valves and instruments not closer to the pump inlet than five times
the piping diameter
10) NO: elbow joints (and other bends) on the pump inlet and outlet
11) OPTIONAL: check valve
12) YES: strainer if particles are present
13) YES: expansion joint (necessary with long pipes or hot liquids) and/or anti-vibration
facility during discharge and suction –anchored near the pump
14) YES: overcoming obstacles at lower depths
15) Fix the pump to the stand by means of holes in the motor feet. The stand must be
level
1.9. Instruments
In order to ensure a proper control of the performance and the conditions of the installed
pump, we recommend using the following instruments:
- a pressure-vacuum gauge on the suction piping;
- a pressure gauge on the discharge piping.
The pressure intakes must be made of straight pieces of piping at a distance of minimum
five diameters from the pump inlets. The pressure gauge on discharge must always be
fitted between the pump and the shut-off / regulation valve. The output can be read on the
pressure gauge, transformed into meters and then compared with the typical curves.

1. INSTALLATION
IOM manual CTS self-priming pumps 10
1.9.1. Electric power
The electric power absorbed by the motor can be measured by means of a wattmeter.
1.9.2. Optional instruments
The optional instruments can indicate if pump is working in an abnormal way. The
abnormal conditions can be caused by: accidentally closed valves, lack of pumped liquid,
overloads, etc.
1.9.3. Thermometer
If the temperature of the pumped liquid is a critical parameter, provide the installation with
a thermometer (preferably on the suction side).
1.10. Motor connection
An expert electrician must always carry out the electrical connection. Compare the power
supply with the data plate specifications and then choose a suitable connection. The type
of connection is stated on the motor data plate and can be Y (star) or D (Delta), according
to the power supply of the motor (see figure below).
Follow the connection standard used in the plant. In no case connect the electrical motor
directly to supply network but use a suitable electric switchboard equipped with a knife
switch and suitable safety devices (e.g. motor breaker switches) in the power circuit.
Safety devices against overloads must also protect the motors. Make sure that the motor
has suitable grounding and that it has been connected properly.

2. OPERATION
IOM manual CTS self-priming pumps 11
2. OPERATION
2.1. Start-up
Check manually that the motor is free to turn, moving the motor cooling fan.
Make sure that the piping is not clogged and is free from residues or foreign objects.
Make sure that the liquid flows regularly into the pump.
The pump casing must be filled with liquid. The minimum water level is:
240 mm ±5 (9,5 ± 0,2 inch) or 7 dm3 (1,54 UK gal) for CTS C pumps
300 mm ±5 (11,8 ± 0,2 inch) or 11,8 dm3(2,6 UK gal) for CTS D, E pumps
The suction shut-off valve (if any) must be completely open.
The shut-off / regulation valve on the discharge side must be opened.
The motor must turn in the same direction as the arrow shown on the pump. The
direction of rotation is always clockwise looking at the pump from the motor side;
check by starting briefly, then looking at the direction of rotation of the motor fan
through the fan lid. If it is wrong, the motor must be stopped immediately. Change the
connection to the terminals of the electric motor (chapter 1.8 “Motor connection”) and
repeat the procedure described above.
Any auxiliary connections must all be connected.
When restarting the pump, make sure to drain the discharge line. It is important that
during self-priming there is no back pressure, so the air can easily escape the pump
casing.
If the pump is equipped with an oil reservoir, make sure to fill it before start-up.
2.1.1. Starting the pump
Start the electric motor. The discharge shut-off / regulation valve must be completely
opened.
If the pressure shown on the pressure gauge on the discharge piping does not increase,
turn off the pump immediately and release pressure carefully. Repeat the connection
procedure.
If there are changes of flow rate, head, density, temperature or viscosity of the liquid, stop
the pump and get in touch with our technical service.
2.1.2. Restarting after power shut-off
In case of accidental stopping, make sure that the non-return valve has prevented backflow
and check that the motor cooling fan has stopped. Start the pump again following the
instructions of chapter 2.1.1 ”Starting the pump”.

2. OPERATION
IOM manual CTS self-priming pumps 12
2.2. Stopping the pump
It is advisable to close the discharge shut-off / regulation valve gradually and stop the
motor immediately after. The reverse sequence is not recommendable, especially with
larger pumps or longer delivery piping. That is to avoid any problems due to water
hammering. If a suction shutoff valve has been installed, it is advisable to close it
completely.
2.3. Cleaning and disinfection
Cleaning and disinfection of the pump system is of greatest importance when the pump is
used in a food processing installation. Use of a pump system that is NOT cleaned or
disinfected can cause contamination of the product. The cleaning cycles as well as
chemicals to use for the cleaning vary depending on the pumped product and the process.
The user is responsible to establish a suitable cleaning and / or disinfection program
according to local and public health and safety regulations.
2.3.1. Cleaning procedure
The pump may be cleaned in two different ways:
CIP (Cleaning In Place)
without dismantling the pump, using steam, water or cleaning chemicals. Follow these
safety instructions during the CIP procedure:
Make sure that all cleaning line connections are properly tightened to avoid splashing
of hot water or cleaning chemicals.
When using an automatic process, a safety device should be installed to avoid
unintentional automatic start-up of the pump.
Before any disassembly of the pump, fittings or pipes, make sure that the cleaning
cycle is finished.
Manual cleaning
by simply dismantling the pump casing, impeller and mechanical seal. Always follow these
safety instructions:
Switch off the electric power to the motor and disconnect the motor starting system if
installed.
The cleaning personnel shall wear suitable protective clothing, footwear and goggles.
Use a suitable non-toxic and non-flammable cleaning solution.
Always keep the area around the pump clean and dry.
Never clean the pump by hand with pump running.

3. MAINTENANCE
IOM manual CTS self-priming pumps 13
3. MAINTENANCE
Maintenance work on electrical installations must be performed by qualified
personnel and only when the power supply has been shutoff. Follow the local
and national safety regulations.
3.1. Inspections
Periodically check suction and discharge pressures.
Inspect the motor according to the instructions from the motor manufacturer.
In general, a mechanical seal does not require maintenance, but the pump should never
run when empty (dry). If a leakage occurs, replace the mechanical seal.
3.2. Location of faults
Overheating of motor
Insufficient flow rate or pressure in pump
No pressure on the discharge side
Irregular discharge flow / pressure
Noise and vibrations
The pump gets clogged
Overheating of the pump
Abnormal wear
Leak in mechanical seal
The pump does not prime
Possible reason
Solution
X
X
X
Wrong direction of rotation
Invert the direction of rotation
X
X
X
X
X
Insufficient suction head (NPSH)
Increase available NPSH:
Raise the suction reservoir
Lower the pump
Reduce the vapour pressure
Increase the diameter of the suction pipe
Make suction pipe short and direct
X
Pump is clogged
Clean the pump
X
X
X
X
Cavitation
Increase suction pressure
X
X
X
X
X
The pump sucks air
Make sure all connections are tight
X
X
X
X
Suction pipe is blocked
Check pipes / valves and filters on the suction
line
X
X
Discharge pressure too high
Reduce the head by increasing pipe diameter
and/or reduce number of valves and bends
X
X
X
Flow rate too high
Reduce the flow:
Partially close the discharge valve
Reduce the impeller diameter (contact us)
Reduce the rotation speed
X
X
X
X
X
Liquid temperature too high
Cool the liquid
X
Broken or worn mechanical seal
Replace the seal
X
Wrong material of O-rings for the liquid
Mount O-rings in other material (contact us)
X
X
X
X
The impeller scratches
Reduce the temperature and / or suction
pressure. Adjust clearance between housing
and impeller
X
X
Loads on the pipes
Connect the pipes independent of the pump
X
X
X
X
Foreign objects in the liquid
Use a filter on the suction side
X
Spring tension too low on mechanical seal
Adjust as mentioned in this manual
X
X
Shut-off valve closed on suction side
Check and open the valve
X
Discharge pressure too low
Increase the pressure –install an impeller with
a bigger diameter (contact us)
X
X
X
Pump is not filled with liquid
Fill pump with liquid
X
X
X
Liquid parameters different than
calculated
Check pumped liquid parameters

3. MAINTENANCE
IOM manual CTS self-priming pumps 14
3.3. Disassembly of the pump
The disassembly should only be performed by qualified personnel.
Each operation carried out on the machine must always be carried out once all the
electrical contacts have been disconnected. The pump-motor unit must be placed in a
position where it cannot be started unintentionally.
Before servicing in any way the parts that come in contact with the pumped liquid, make
sure that the pump has been fully emptied and washed. When draining the liquid, make
sure that there is no danger for people or the environment.
The numbers put in brackets, refer to the part numbers in the spare part drawings and
spare part lists in chapter 4“Spare parts”.
3.3.1. Disassembly procedure
Fig. 3.3.1
Unscrew the casing mounting nuts [143] and remove
the washers [142].
Fig. 3.3.2
Take off the pump casing [131S].
Fig. 3.3.3
Remove the O-ring [18].
NOTE! After every disassembly the O-ring [18] has to
be replaced by a new one.
Fig. 3.3.4
Remove the impeller mounting screw [191] and the
washer [192], use a spanner key in the opening of the
pump back cover [11] to hold the shaft [16] to lock the
impeller. Remove the impeller.
Fig 3.3.6
Carefully remove the back casing [12]. The static part
[15B] of the mechanical seal will remain in the back
casing.

3. MAINTENANCE
IOM manual CTS self-priming pumps 15
Fig 3.3.7
If necessary, push out the static part [15B] of the
mechanical seal.
NOTE! Apply some alcohol or water before pushing
out of the mechanical seal.
Fig 3.3.8
Remove the deflector [17].
Fig 3.3.9
Remove the screws [121] and washers [122] holding
the back cover [11] to the motor [10].
Fig 3.3.10
Loosen the lock screws [161] and remove the shaft
extension [16].
The pump is now completely disassembled. Check all components, especially the casing
O-ring and mechanical seal, for wear or damage and replace if necessary.
3.4. Assembly of the pump
The assembly procedure is done in the reverse order to the disassembly.
Nevertheless there are a few things that you have to remember in order to assemble the
pump correctly.
Fig. 3.4.1
When mounting the impeller [9…] on the shaft
extension [16] make sure that it is locked in the
proper position before tightening the mounting screw
[191] with its washer [192].
NOTE! Take care not to damage the head surface of
the shaft extension.

3. MAINTENANCE
IOM manual CTS self-priming pumps 16
Fig. 3.4.2
Before assembly of the mechanical seal [15] wet the
O-rings with alcohol.
Fig. 3.4.3
After inserting the static part [15B] of the mechanical
seal, fit the back casing [12] onto the back cover [11]
and check the seal fitting dimension according to the
table below. This ensures that correct pressure is
applied on the mechanical seal by the impeller.
NOTE! This is a very important procedure when you
have taken off the shaft extension.
Fig. 3.4.4
Using a calliper, adjust the “S” dimension.
It is achievable by loosening the lock screws [161]
and moving the shaft extension [16] up or down.
Pump type
S [mm]
CTS C
35.5
CTS D
35.5
CTS E
35.5
Fig. 3.4.5
When assembling the casing, make sure that the O-
ring sealing surfaces on the casing [131S] and the
back casing [12] are clean.

3. MAINTENANCE
IOM manual CTS self-priming pumps 17
Fig. 3.4.6
To screw in the casing pin screws [141S] use two
nuts tightened against each other.
3.4.1. Test run
We recommend you to conduct a test run of the pump before installing it in the system, so
no liquid gets wasted if the pump leaks or perhaps does not start accordingly to wrong
assembly of the pump.
After a few weeks of operation retighten the screws with appropriate torque.

4. SPARE PARTS
IOM manual CTS self-priming pumps 18
4. SPARE PARTS
4.1. Spare parts drawing
4.2. Spare parts list
Pos.
Description
Size
Material
CTS C
CTS D
CTS E
CTS H
CTS I
10
Electric motor
1
1
1
11
Back cover [H/N]*
1
1
1
AISI 316L Glass blasted
AISI 316L Ra<0.8
12
Back casing [H/N]
1
1
1
AISI 316L
AISI 316L Ra<0.8
121
Back cover mounting screws
4
4
4
AISI 316L
AISI 316L
122
Back cover mounting washers
4
4
4
AISI 316L
AISI 316L
131S
Pump casing [H/N]
1
1
1
AISI 316L Glass blasted
AISI 316L Ra<0.8
1331
Drain plug screw cap
2
2
2
AISI 316L
AISI 316L
1332
Drain plug stopper
2
2
2
AISI 316L
AISI 316L
1333
Drain plug O-ring
2
2
2
141S
Casing mounting screws
4
8
8
AISI 316L
AISI 316L
142
Casing mounting washers
4
8
8
AISI 316L
AISI 316L
143
Casing mounting nuts
4
8
8
AISI 316L
AISI 316L
15
Mechanical seal (complete)
[H/N]
1
1
1
See 5.4
See 5.4
16
Shaft extension
1
1
1
AISI 316L
AISI 316L
161
Lock screw
1
2
2
AISI 316
AISI 316
17
Deflector
1
1
1
NBR
NBR
18
Casing O-ring [H/N]
1
1
1
EPDM (std), FKM, FEP,
NBR
EPDM FDA (std)
FEP/FKM FDA
191
Impeller mounting screw
1
1
1
AISI 316L
AISI 316L
192
Impeller mounting washer
1
1
1
AISI 316L
AISI 316L
34*
Feet
4
4
4
AISI 316L
AISI 316L
341*
Feet mounting screws
4
4
4
AISI 316L
AISI 316L
342*
Feet mounting washers
4
4
4
AISI 316L
AISI 316L
9…
Impeller
1
1
1
AISI 316L Glass blasted
AISI 316L Ra<0.8
* Option
Parts indicated as [H/N] have different execution for CTS I and CTS H pumps. When ordering spare parts please
indicate if the part is for Industrial or Hygienic series e.g. 5-340N-11 or 5-340H-11.

4. SPARE PARTS
IOM manual CTS self-priming pumps 19
4.3. Recommended spare parts
Normally the CTS pump is maintenance free. However. depending on the nature of the
liquid and temperature etc.. some parts of the pump are subject to wear and have to
replaced. We recommend having the following parts in stock:
Pos.
Description
Q-ty
15
Mechanical seal
1
18
Casing O-ring
1
4.4. How to order parts
When ordering spare parts for Tapflo pumps. please let us know what is the model number
and serial number from the pump’s name plate. Then just indicate the part numbers from
the spare parts list and quantity of each item.

5. DATA
IOM manual CTS self-priming pumps 20
5. DATA
5.1. Pump code
The model number on the pump and on the front page of this instruction manual tells the
pump size and materials of the pump.
I. Tapflo centrifugal self-priming pump
V. Pump options
II. Pump execution
VI. Motor power
III. Casing size
VII. Motor option
IV. Impeller size
CTS
I
C
C-
1CGV3F-
02
M
I. CTS = Tapflo centrifugal self-priming pump
II. Pump execution:
I = Industrial
H = Hygenic
III. Casing size (motor flange diameter / IEC size):
C = 140 mm / 90
D = 160 mm / 100 or 112
E = 200 mm / 132
IV. Impeller size
C = 125 mm
D = 130 mm
E = 135 mm
F = 155 mm
G = 180 mm
V. Pump options:
1. Mechanical seal:
Blank* = ceramin/graphite/EPDM (FDA on CTS H)
1CGV = ceramin/graphite/FKM (CTS I only)
1CGF = ceramin/graphite/FEP (FDA)
1CGN = ceramin/graphite/FKM
1SSE = SiC/SiC/EPDM (FDA on CTS H)
1SSV = SiC/SiC/FKM (CTS I only)
1SSF = SiC/SiC/FEP (FDA)
1SSN = SiC/SiC/NBR (CTS I only)
1SGE = SiC/graphite/EPDM (FDA on CTS H)
1SGV = SiC/graphite/FKM (CTS I only)
1SGF = SiC/graphite/FEP (FDA)
1SGN = SiC/graphite/NBR (CTS I only)
3. Connection options
Blank* = Thread BSP on CTS I
Thread DIN 11851 on CTS H
3B = BSPT thread (on CTS H)
3C = Clamp ISO 1852 (CTS H only
3T = Clamp DIN 32676 (CTS H only)
3S = Thread SMS (CTS H only)
3R = Thread RJT (CTS H only)
3P = ISO 1127 clamp (CTS H only)
DA = DIN11866-1A thread (CTS H)
4. Special executions
4Z = Oil lubricated seal
4H = Semi open heavy duty impeller
PX = Welds polishing (CTH S only)
W = Reinforced inmpeller (D and F
sizes only)
Q = Extra quench
VI. Motor power / IEC motor size
2900 rpm motors (2-pole):
22 = 2.2 kW / 90
40 = 4.0 kW / 112
55 = 5.5 kW / 132
75 = 7.5 kW / 132
1450 rpm motors (4-pole):
114 = 1.1 kW / 90
224 = 2.2 kW / 100
VII. Motor options
M = Hygenic motor shroud (CTS H)
X2d = Eex d IIB T4 motor
X2e = Eex e IIB T3 motor
X2de = Eex de IIB T4 motor
X2nA = Eex nA IIB T4 motor
X3e = Ex II 3G T135C motor - tropic
T = Motor with PTC thermistor
F60 = 60 Hz motor
* = standard execution