TapFlo CTI AA-03 User manual

Pumps CTH in electro polished stainless steel AISI 316L.
Pumps CTI in glass blasted stainless steel AISI 316L.
Instructions for installation, start up, operation, maintenance and repair.
STOP
Read this instruction manual carefully,
before you install and operate the pump
Pump models:
CTI CTH
 With motor 2900 rpm:
CTI AA-03 7 m3/h, 10 m
CTI AA-05 12 m3/h, 10 m
CTI BB-07 17 m3/h, 11 m
CTI CC-15 19 m3/h, 22 m
CTI CC-22 34 m3/h, 22 m
CTI CE-22 20 m3/h, 31 m
CTI DD-40 50 m3/h, 22 m
CTI DF-40 28 m3/h, 35 m
CTI EF-55 42 m3/h, 35 m
CTI EG-55 30 m3/h, 47 m
CTI EF-75 60 m3/h, 35 m
CTI EG-75 35 m3/h, 47 m
CTI EG-110B 50 m3/h, 32 m*
 With motor 1450 rpm:
CTI AA-024 7 m3/h, 2.7 m
CTI BB-054 9 m3/h, 2.8 m
CTI CC-114 18 m3/h, 5.5 m
CTI CE-114 22 m3/h, 7.7 m
CTI DD-224 25 m3/h, 5.5 m
CTI DF-224 34 m3/h, 8.7 m
CTI DG-224 42 m3/h, 12.0 m
 With motor 2900 rpm:
CTH AA-03 7 m3/h, 10 m
CTH AA-05 12 m3/h, 10 m
CTH BB-07 17 m3/h, 11 m
CTH CC-15 19 m3/h, 22 m
CTH CC-22 34 m3/h, 22 m
CTH CE-22 20 m3/h, 31 m
CTH DD-40 50 m3/h, 22 m
CTH DF-40 28 m3/h, 35 m
CTH EF-55 42 m3/h, 35 m
CTH EG-55 30 m3/h, 47 m
CTH EF-75 60 m3/h, 35 m
CTH EG-75 35 m3/h, 47 m
CTH EG-110B 50 m3/h, 32 m*

 With motor1450 rpm:
CTH AA-024 7 m3/h, 2.7 m
CTH BB-054 9 m3/h, 2.8 m
CTH CC-114 18 m3/h, 5.5 m
CTH CE-114 22 m3/h, 7.7 m
CTH DD-224 25 m3/h, 5.5 m
CTH DF-224 34 m3/h, 8.7 m
CTH DG-224 42 m3/h, 12.0 m
*only in long coupled pump execution
IOM manual
2012 rev 2
www.51085793.com

Instruction manual CT centrifugal pumps 2
CONTENTS
Chapter Content Page
Contents 2
CE certificate 3
0 General 4
0.1 Introduction 4
0.2 The warning symbols 4
0.3 Qualification and training of personnel 4
0.4 Health & safety 5
1 Installation 6
1.1 Receiving inspection 6
1.2 Storage 6
1.3 Foundation 6
1.4 Piping connections 6
1.4.1 Discharge pipe 6
1.4.2 Suction pipe 6
1.5 Example of installation 7
1.6 Instruments 8
1.7 Motor connection 8
2 Operation 9
2.1 Start-up 9
2.1.1 Starting the pump 9
2.1.2 Re-starting after power shutoff 9
2.2 Stopping the pump 9
2.3 Cleaning and disinfection 10
2.3.1 Cleaning procedure 10
3 Maintenance 11
3.1 Inspections 11
3.2 Location of faults 11
3.3 Assembly and disassembly 12
3.3.1 Pump casing - assembly and disassembly 12
3.3.2 Impeller and back casing - disassembly 13
3.3.3 Mechanical seal - assembly and disassembly 13
3.3.4 Assembly of impeller 14
3.3.4 Replacement of motor 15
3.4 Mounting torques and dimensions of screws/nuts 15
3.5 Lubricated seal 16
3.6 Heating jacket 17
3.7 Flushed seal 17
3.8 Hygienic shroud 19
3.9 Draining service 19
3.10 Long coupled execution 19
4 Technical data 20
4.1 Spare part drawing CT pumps 20
4.2 Spare part list 20
4.2.1 Spare part list CTI 21
4.2.2 Spare part list CTH 22
4.3 Stocking recommendation 23
4.4 Pump code 23
5 Data 24
5.1 Performance curves 24
6 Warranty & repair 25
6.1 Returning parts 25
6.2 Warranty 25
6.3 Warranty form 27

Instruction manual CT centrifugal pumps 3
Declaration of conformity
Machinery directive 2006/42/EC
Tapo AB declares that:
Product name: Centrifugal pumps
Models: CT…
Is in conformity with the essential health and safety requirements and technical con-
struction le requirements of the EC Machinery directive 2006/42/EC with amendments
91/368/EEC, 93/94 EEC and 93/68 EEC.
Manufacturer: Tapo AB
Address: Filaregatan 4
S-442 34 Kungälv
Sweden
Tapo AB, may 2:nd 2012
Håkan Ekstrand
Managing director
CE CERTIFICATE

Instruction manual CT centrifugal pumps 4
0. GENERAL
0.1 Introduction
CT is an open impeller centrifugal pump, manufactured from stainless steel AISI 316L. CTH with excellent
electro polished surfaces, FDA approved seals, high finish and mechanical strength, meet the demands
from food and sanitary applications, CTI with AISI 316L chemical resistance and mechanical strength
is reliable choice.
With proper attention to maintenance, CT 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 The 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 in-
structions in this instruction manual, the general safety and accident prevention regulations
must be observed.
This symbol signals possible danger caused by the presence of electric fields or live wires.
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 pump or its subassemblies.
0.3 Qualification and training of personnel
The personnel in charge of installation, the operation cycle and maintenance of the pumps we produce
must be qualified to carry out the operations described in this manual. Tapflo shall not be held respon-
sible for the training level of personnel and for the fact that they are not fully aware of the contents of
this manual.
STOP
!
STOP
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Instruction manual CT centrifugal pumps 5
0. GENERAL
0.4 Health & safety
Electric safety
Do not carry out any maintenance operation on the pump while it is running or before it has been dis-
connected 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.
Chemical hazards
Avoid pumping liquids, even in different moments that may cause chemical reactions without having
cleaned the pump.
Dry running
Do not start nor carry out running tests before filling the pump with liquid. Always avoid the dry opera-
tion of the pump. Start the pump when it is completely filled with the delivery valve almost fully closed,
limiting this condition to the time that is strictly necessary to start the pump.
Temperature hazards
The cold or hot parts of the machine must be protected to avoid accidental contacts.
Rotating parts
Do not tamper with the protection of the rotating parts, do not touch or approach rotating parts in
movement.
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 plant, cavitation or any other abnormal opera-
tion that do not depend 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 regulations).
Cleaning & 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.
STOP
!
STOP
STOP
STOP
STOP
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Instruction manual CT centrifugal pumps 6
1. INSTALLATION
1.1 Receiving inspection
Although precaution is taken by us when packing and shipping, we urge you to carefully check the ship-
ment 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.
1.2 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. Make sure to clean the pump thoroughly before installation.
1.3 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 are 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 antivibration rubber
pieces between the pump and the brickwork.
For close-coupled type, pump-motor alignment is not required.
1.4 Piping connections
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 operation and the operating life of the pump. The pump can-
not 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 plant. In case of diameter reduction,
it is advisable to use appropriate conical reductions (possibly eccentric on suction side and concentric
on delivery side) at changes of diameter and at a minimum distance from pump inlets of five diameters.
1.4.1 Discharge pipe
A nonreturn valve and a shutoff/regulation valve are normally fitted on the discharge side.
The nonreturn valve protects the pump from any backflow. The shutoff/regulation valve excludes the
pump from the line and adjusts output. Never adjust flow-rate using the valve on the suction pipe.
1.4.2 Suction pipe
The suction piping is very important for the correct operation of the pump group. 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.
The CT pumps are single-stage centrifugal type, thus not self-priming. It will therefore always be necessary
to install a bottom valve in all cases when the static height of the liquid is lower than the suction height
of the pump. The suction piping must be without air inlets that are more probable with long suction lines
or if suction occurs with negative head. Critical points in these terms are also the seals between flanges
and the seals of the valve stems. Even some small air let into the suction line cause serious operating
problems that can make the pump stop.
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Instruction manual CT centrifugal pumps 7
1. INSTALLATION
1.5 Example of installation
1) YES: gate valve (may also be near pump in the 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 fixing parts
6) Suction line as short and direct as possible
7) YES: check valve (especially for long vertical or horizontal pipes; compulsory with parallel
pumps)
8) YES: adjusting gate valve on outlet
9) Bends placed after valves and instruments
10) YES: attachment for gauge or safety pressure switch
11) NO: elbow joints (and other parts) on the pump (discharge and suction lines)
12) With negative suction lift: tilt of piping towards suction tank
13) YES: check valve (with negative suction lift)
14) YES: strainer if particles are present
15) Suction head varies according to flow in order to prevent windage
16) Suction head
17) Immersion depth
18) YES: expansion joint (indispensable with long pipes or hot liquids) and/or anti-vibration facility during
discharge and suction; anchored near to pump
19) YES: pipe discharge (completely sealed), discharge valve shut during normal operations
20) YES: overcoming obstacles at lower depths
21) Fix the pump by the fixing holes provided: the supports must be level
22) YES: drainage channel around base
1234
20
13
12
22
14
17
16
21
5 6
7
8
9
10
18
15
11
Fig. 1 Installation
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Instruction manual CT centrifugal pumps 8
1. INSTALLATION
1.6 Instruments
In order to ensure a reasonable control of the performance and the conditions of the pump installed,
we recommend using the following instruments:
- a pressure-vacuum gauge on the suction piping;
- a pressure gauge on the delivery piping.
The pressure intakes must be made on straight pieces of piping at minimum five diameters from the
pump inlets. The pressure gauge on delivery must always be fitted between the pump and the shutoff/
regulation valve. The output can be read on the pressure, transformed into meters and then compared
with the typical curves.
Electric power
The electric power absorbed by the motor can be measured with wattmeters.
Optional instruments
The optional instruments can advise of abnormal operating conditions of pumps, such as: valves closed
accidentally, missing liquid, overloads, etc.
Thermometer
If the temperature of the pumped liquid can be a critical element, provide a thermometer (preferably
on suction).
1.7 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 that can be Y (star) or D (Delta), according to the power supply of the motor (see figure).
Star connection Y Delta connection D
Follow the prescriptions of the local electricity board for the connection. In no case connect the electrical
motors directly to mains but also fit in between a suitable electric switchboard equipped with a knife
switch and suitable safety devices. Safety devices against overloads must protect the motors. Make sure
that the motor has suitable grounding and that it has been connected properly.
!
!
Fig. 2 Motor connection
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Instruction manual CT centrifugal pumps 9
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 and piping connected to it, at least the suction pipe, must be full of liquid. Any air or gas
must be carefully released. In case of suction with negative head, fill the suction piping and check
how the bottom valve works. It must guarantee that the liquid must not flow back, emptying therefore
the suction pipe with consequent disconnection of the pump.
- The suction shutoff valve (if any) must be completely open.
- The shutoff/regulation valve on the discharge side must be almost completely closed.
- 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 1.7) and repeat
the procedure described above.
- Any auxiliary connections must all be connected.
2.1.1 Starting the pump
Start the electric motor and open the discharge adjustment/shutoff valve gradually until the desired output
has been reached. The pump must not turn more than two or three minutes with discharge closed. A
longer operation in these conditions can damage the pump seriously.
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 Re-starting after power shutoff
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”.
If the pump intakes from a lower level, it can unprime during the standstill and therefore you must check
again before starting that the pump and the suction piping are full of liquid.
2.2 Stopping the Pump
It is advisable to close the discharge adjustment/shutoff 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.
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STOP
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Instruction manual CT centrifugal pumps 10
2.3 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. 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 disin-
fection 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 a automatic process, a safety device should be installed to avoid unintentional automatic
start-up of the pump.
- Make sure that the connections in the pump system are secure and tight.
- 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 in-
structions:
- 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-inflammable cleaning solution.
- Always keep the area around the pump clean and dry.
- Never clean the pump by hand with pump running.
STOP
STOP
STOP
2. OPERATION
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Instruction manual CT centrifugal pumps 11
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
Overloading of motor Insufcient ow rate or pressure in pump No pressure on the discharge side Irregular discharge ow/pressure Noise and vibrations The pump gets clogged Overheating of the pump Abnormal wear Leak in mechanical seal
Problem
Possible reason Solutions
Wrong direction of rotation Invert the direction of rotation
Insufcient 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
Pump is clogged Clean the pump
Cavitation Increase suction pressure
The pump sucks air Make sure all connections on suction pipe are tight
Suction pipe is blocked Check pipe/valves and lters on the suction line
Discharge pressure too high Reduce the head by increasing pipe diameter and/or reduce
number of valves and bends
Flow rate too high Reduce the ow:
- Partially close the discharge valve
- Reduce the impeller diameter (contact us)
- Reduce the rotation speed
Liquid temperature too high Cool the liquid
Broken or worn mechanical seal Replace the seal
Wrong material of o-rings for the liquid Mount o-rings in other material (contact us)
The impeller scratches - Reduce the temperature
- Reduce the suction pressure
- Adjust the clearance between housing and impeller
Loads on the pipes Connect the pipes independent of the pump
Foreign objects in the liquid Use a lter on the suction side
Spring tension too low on mechanical seal Adjust as mentioned in this manual
Shut off valve closed on suction side Check and open the valve
Discharge pressure too low Increase the pressure:
- Install an impeller with bigger diameter (consult us)
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Instruction manual CT centrifugal pumps 12
3. MAINTENANCE
3.3 Assembly and disassembly
The assembly and 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 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.
!
STOP
11
121
Fig. 3.3 Assembly drawing for CT pumps
1
122
90
13
16
18
161
192 143
191
141
142
12
17
15B
15A
Fig. 3. Assembly drawing for CT pumps
Fig. 4 Fig. 5
3.3.1 Pump casing (13) – assembly and disassembly
Follow the safety instructions in above section 3.3
Disassembly
- Remove the casing mounting screws (141), washers (142) and nuts (143) - Fig 4.
- Carefully remove the casing (13) - Fig 5.
Check the casing O-ring (18) and replace with new one if worn or damaged.
Assembly
- When reassembling the casing, make sure that the O-ring sealing surfaces on the casing (13) and
the back casing (12) are clean.
- Put the casing O-ring (18) on the back casing (12).
- Assemble the pump casing (13), insert the casing mounting screws (141), washers (142) and nuts
and tighten alternately.
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Instruction manual CT centrifugal pumps 13
3. MAINTENANCE
3.3.2 Impeller (90) and back casing (12) – disassembly
Disassemble the pump casing (13) according to chapter 3.3.1
- Remove the impeller mounting screw (191) and the washer (192), use spanner key on the cut in pump
shaft (pos. 16) to lock the impeller - Fig 6.
- Remove the impeller (90).
- Carefully remove the rotating seal part with spring (15A) - Fig 7.
- Carefully remove the back casing (12). The static part of the mechanical seal (15B) will remain in
the back casing - Fig 8.
Fig. 6.
Fig. 9.
Fig. 7.
Fig. 10
Fig. 8.
Fig. 11.
3.3.3 Mechanical seal (15) – assembly and disassembly
Follow the disassembly instructions for the pump casing (3.3.1) and impeller and back casing (3.3.2).
Disassembly
- When the impeller (90) has been removed, the rotating part of the seal (15A) remains on the shaft
extension (16). The static part (15B) remains in the back casing - Fig 9.
- Carefully pull out the rotating part of the seal (15A) from the shaft extension (16) - Fig 10.
- Carefully push out the static part of the seal (15B) - Fig 11.
Check the sealing surfaces and the O-rings. If they are worn or damaged, replace the complete me-
chanical seal (15).
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Instruction manual CT centrifugal pumps 14
3. MAINTENANCE
Changes reserved without notice
Fig. 16. Fig. 17.
Fig. 12. Fig. 13. Fig. 14.
Assembly
- Before assembly, wet the O-rings on the seal with soapy water.
- Carefully insert the static part of the seal (15B) in the back casing - Fig 12.
- Fit the back casing (12) onto the back cover (11) - Fig 13.
- Check the seal fitting dimensions according to table 3.3.3 to ensure the correct pressure on the
seal. This procedure is important only if you have disassembled the motor/shaft extension. In order
to adjust the dimension ”S”, move the shaft extension (16).
- Carefully slide the rotating part of the seal (15A) onto the shaft extension (16) - Fig 14.
- Mount the impeller as described in the next section.
Fig. 15. Seal tting dimmensions
Table 3.3.3
Pump type S (mm)
CTA 33
CTB 33
CTC 35,5
CTC 35,5
CTC 35,5
CTD 35,5
CTD 35,5
CTD 35,5
CTD 35,5
CTE 35,5
3.3.4 Assembly of impeller (90)
- Push the impeller (90) towards the spring of the rotating seal part (15A) and mount the impeller on
the shaft extension (16) - Fig 16.
- Make sure that the impeller is locked in its position and tighten the impeller mounting screw (191)
with its washer (192) - Fig 17.

Instruction manual CT centrifugal pumps 15
3. MAINTENANCE
3.3.5 Replacement of motor (1)
Follow the instructions for disassembly of the impeller and back casing according to chapter 3.3.2.
- Remove the deflector (17) from the shaft extension (16) - Fig 18.
- Remove the back cover screws (121) and washers (122) - Fig 19.
- Remove the back cover (11).
- Loosen the lock screws (161) and remove the shaft extension (16) - Fig 20.
Pump model
CT A.. CT B.. CT C.. CT C.. CT E..
Pos 121, allen screw
Mounting torque (Nm)
Tool size "s" (mm)
Thread
15
5
M6
15
5
M6
15
5
M6
15
6
M8
15
6
M8
Pos 141, allen screw
Mounting torque (Nm)
Tool size "s" (mm)
Thread
15
5
M6
15
6
M8
15
8
M10
15
6
M10
15
6
M8
Pos 143, hexagonal nut
Mounting torque (Nm)
Tool size "s" (mm)
Thread
15
5
M6
15
13
M8
15
17
M10
15
13
M8
15
13
M8
Pos 161, allen screw
Mounting torque (Nm)
Tool size "s" (mm)
Thread
17
3
M6
17
3
M6
17
4
M8
17
4
M8
17
4
M8
Pos 191, hexagonal screw
Mounting torque (Nm)
Tool size "s" (mm)
Thread
17
17
M10
17
17
M10
17
17
M10
17
17
M10
17
17
M10
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Fig. 18. Fig. 19. Fig. 20.
3.4 Mounting torques and dimensions of screws/nuts
Check the motor and repair or replace according to the instructions from the motor manufacturer. As-
semble in the reverse order.

Instruction manual CT centrifugal pumps 16
3. MAINTENANCE
3.5 Lubricated seal
A great option where there is a potential risk of dry running, or where the product tends to solidify or crystallize. An
oil chamber is connected to the mechanical seal chamber.
The pump is delivered without lube medium in oil chamber!
- Before the first start fill up the oil chamber with proper medium (i.e. SAE 20 oil). In case the
pumped medium can’t be contaminated by oil, you should use a lubricating medium compatible
with pumped medium.
- Medium in the oil chamber should be also compatible with materials that the pump is made
of (when using oil as buffering liquid you should not use EPDM O-rings in mechanical seal)
- NBR lip seal is a standard (other materials are available upon request).
- Oil chamber should be filled up to ¾ of oil cup height.
- You should change oil after 2000 hours of operation or once a year.
Important!
- If mechanical seal damage will occur, fluid level in the chamber will increase and then it will
spill out of the oil cup. You must stop the pump immediately to replace mechanical seal!
- If oil level in oil cup will start decreasing in short period of time, probably lip seal is damaged.
You should stop the pump and replace damaged lip seal.
Additional parts:
!
Pos Description
114 Pump back cover for lubricated seal
126 Pump back casing with welded seal chamber
159 Lip seal (for 4Z pump configuration)
16Z Shaft for pump with lubricated seal
16WZ Shaft – reinforced version for pump with lubricated seal
62 Oil reservoir for seal
Fig. 21.
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Instruction manual CT centrifugal pumps 17
3. MAINTENANCE
3.6 Heating/cooling jacket
Great protection for the mechanical seal in cases where there is a risk for solidification of the pro-
duct. The heating jacket is also used when the pumped product has to maintain a specific tempe-
rature, high or low. A heating or cooling medium is continuously circulated in the jacket.
Back casing heating/cooling system is available in sizes: “C” , “D” and "E" of Tapflo CT pumps.
Heating/cooling is operated by a jacket placed in pump back casing (12). The jacket have two G
½” connections. To connect the jacket use flexible hose to prevent any undue stress and strain on
the heating jacket connectors.
For heating/cooling process use medium fully compatible with materials the pump is made of.
Maximum temperature for heating medium is 60°C, maximum pressure is 2 Bar. It’s crucial to
avoid sudden temperature changes that could cause excessive strains.
Pos Description
111 Pump back cover for heating jacket
120 Pump back casing with heating jacket
125 Joint for pump with heating jacket
Comparing to standard execution, heating jacket option contains followed additional
parts:
3.7 Flushed seal
When abrasive or sticky particles are present, it’s recommended to use flushed seal (plan 11). A small
amount of the pumped product is recirculated from the discharge side to the seal chamber to flush
solids cumulated in it. It helps to save mechanical seal (15) and back casing (12) from being worn. In
addition a self-cleaning filter is used at the discharge.
Pos Description
116 Back cover for flushed seal
126 Pump back casing with welded seal chamber
136 Pump cover for flushed seal
1361 Strainer
1362 Nipple
1363 Metal pipe
1364 Connection adaptor
1365 Adaptor o-ring
Flushed seal pipe work is fully demountable. To disassemble self-cleaning filter for removal of collected “big”
particles or routine inspections, remove upper flange and then disassemble the filter. To provide easy disassembly
the flushing steel pipe line is fixed with gas fittings.
For flushed seal design of pump is supplied in parts for this application as follows:
Fig. 22.
Fig. 23.
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Instruction manual CT centrifugal pumps 18
3. MAINTENANCE
Lubricated seal with heating jacket
Pos Description
1146 Pump back cover for flushed and lubricated seal
126 Pump back casing with welded seal chamber
136 Cover for flushed seal
1361 Strainer
1362 Nipple
1363 Metal pipe
1364 Connection adaptor
1365 Adaptor O-ring
159 Lip seal for 4Z pump configuration
16Z Shaft for pump with lubricated seal
16WZ Shaft - reinforcement version for pump with lurbricated seal
62 Oil reservoir for seal
Flushed and oil lubricated seal
Pos Description
1114 Pump back cover for heating jacket and lubricated seal
1141 Oil cup
1260 Pump back casing with welded seal chamber and heating jacket
125 Plug for pump with welded seal chamber
159 Lip seal for 4Z pump congiguration
16Z Shaft for pump with lubricated seal
62 Oil reservoir for seal
Pos Description
11146 Pump back cover for flushed and oil lubricated seal with heating jacket
125 Joint for pump with heating jacket
1260 Pump back casing with welded seal chamber and heating jacket
136 Cover for flushed seal
1361 Strainer
1362 Nipple
1363 Metal pipe
1364 Connection adaptor
1365 Adaptor O-ring
159 Lip seal (for 4Z pump configuration)
16Z Shaft for pump with lubricated seal
16WZ Shaft – reinforced version for pump with lubricated seal
62 Oil reservoir for seal
To meet the demands from a variety of today’s industry we also provide options that are a combination of executions
listed above such as:
Flushed and oil lubricated seal with heating jacket.
Additional parts:
Fig. 24.
Fig. 25.
Fig. 26.
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Instruction manual CT centrifugal pumps 19
3. MAINTENANCE
3.8 Hygienic shroud
Optional motor shroud and baseplate in stainless steel provide easy cleaning and splash protection for electrical
motor.
Pos Description
31 Hygienic cover for motor
34 Shroud foot
341 Shroud foot screws
342 Shroud foot screws washers
3.9 Draining device
To allow easy draining, pump casing is designed with drain and drain plug. To empty the pump just remove the
drain plug and the pump casing will be drained automatically.
For draining device the design of pump casing differ from standard casing (13) and contains followed parts:
Pos Description
131 Pump casing with drain
132 Drain plug
1321 Drain plug o-ring
3.10 Long coupled execution
Long coupled execution is a perfect solution when pumping hot products like oil at temperatures up to 180°C.
Complete pump unit is mounted on baseplate, with coupling, bearing and guard. Usage of additional bearing also
provides more stable work for pump unit.
For long coupled execution the design of pump unit is different from standard design and contains followed
additional parts:
Pos Description
21 Pedestal for pump and motor
271 Bearing circlip towards motor
272 Bearing circlip towards pump
40 Coupling
41 Cover for coupling
411 Washers for cover for coupling
42 Elastic connector for coupling
50 Bearing
51 Cover for bearing
To protect electric motor from liquids and to keep an pump application clean, the hygienic shroud design contains
additional parts as follow:
Fig. 27.
Fig. 28.
Fig. 29.
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Instruction manual CT centrifugal pumps 20
4.1 Spare part drawing CT pumps
4.2 Spare part list
4. Technical data
Pos Description Pump model / quantity Material
CTH CTI
AA-03
AA-05
AA-
024
BB-07
BB-04 CC-15 CC-22
CE-22
CC-
114
CE-144
DD-40
DD-
224
DF-40
DF-
224
DG-55
DG-55 EF-55 EG-55
EF-75
EG-75
1 Electric motor 1 1 1 1 1 1
11 Back cover [H/N]* 1 1 1 1 1 1 AISI 316L Glass blasted AISI 316L Ra<0.8
12 Back casing [H/N] 1 1 1 1 1 1 AISI 316L AISI 316L Ra<0.8
121 Back cover mounting screws 4 4 4 4 4 4 AISI 316L AISI 316L
122 Back cover mounting washers 4 4 4 4 4 4 AISI 316L AISI 316L
13 Pump casing [H/N] 1 1 1 1 1 1 AISI 316L Glass blasted AISI 316L Ra<0.8
141 Casing mounting screws 4 4 4 8 8 8 AISI 316L AISI 316L
142 Casing mounting washers 4 4 4 8 8 8 AISI 316L AISI 316L
143 Casing mounting nuts 4 4 4 8 8 8 AISI 316L AISI 316L
15 Mechanical seal (complete) [H/N] 1 1 1 1 1 1 See 4.4 See 4.4
16 Shaft extension 1 1 1 1 1 1 AISI 316L AISI 316L
161 Lock screw 1 1 1 2 2 2 AISI 316L AISI 316L
17 Deflector 1 1 1 1 1 1 NBR NBR
18 Casing O-ring [H/N] 1 1 1 1 1 1 EPDM (std) FKM,
FEP (Silicone), NBR EPDM FDA aproved (std) FEP/Silicone FDA aproved
191 Impeller mounting screw 1 1 1 1 1 1 AISI 316L AISI 316L
192 Impeller mounting washer 1 1 1 1 1 1 AISI 316L AISI 316L
90 Impeller 1 1 1 1 1 1 AISI 316L Glass blasted AISI 316L Ra<0.8
Accessories
21 Base plate complete 1 1 1 1 1 1 AISI 316L AISI 316L
31 Motor cover complete 1 1 1 1 1 1 AISI 316L AISI 316L
11
122
16
121
17
161
12
15A
15
18
90
192
141
142
191
13
1
143
Parts indicated as [H/N] have different execution for CTI and CTH pumps. When order spares please indicate i.e. 5-340N-11 for industrial CTI series
or 5-340H-11 for higienic CTM series.
Fig. 30.