TapFlo PTL P User manual

`
PTL Low Pressure
Hose Pumps
Original Instruction
2021 | 2
Read this instruction manual carefully,
before you install and operate the pump
Pump models:
PTL
9
13
17
25
30
45
IOM manual

CONTENTS
IOM manual Tapflo Hose Pumps 1
EC DECLARATION OF CONFORMITY 01/EC/PTL/2021............................................................................ 4
0. GENERAL......................................................................................................................................... 5
0.1. Introduction................................................................................................................................ 5
0.2. Warning symbols ....................................................................................................................... 5
0.3. Qualification and training of personnel................................................................................... 5
0.4. Nameplate .................................................................................................................................. 6
1. INSTALLATION ............................................................................................................................... 7
1.1. Operation principle.................................................................................................................... 7
1.2. Receiving inspection.................................................................................................................. 7
1.3. Lifting and transportation......................................................................................................... 7
1.4. Storage........................................................................................................................................ 8
1.5. Foundation ................................................................................................................................. 8
1.6. Environment ............................................................................................................................... 8
1.7. Suction and discharge piping ................................................................................................... 8
1.7.1. Connection of suction pipe ............................................................................................... 9
1.7.2. Connection of discharge pipe ........................................................................................... 9
1.8. Health and safety ....................................................................................................................... 9
1.8.1. Protection ......................................................................................................................... 10
1.8.2. Electrical safety ................................................................................................................ 10
1.8.3. Chemical hazard ............................................................................................................... 10
1.8.4. Noise level ........................................................................................................................ 10
1.8.5. Temperature hazards ....................................................................................................... 10
1.8.6. Rotating parts................................................................................................................... 11
1.8.7. Cleaning and disinfection................................................................................................ 11
1.9. Installation recommendations ................................................................................................ 11
1.9.1. Minimum required distance for hose removal .............................................................. 11
1.10. Instruments........................................................................................................................... 12
1.10.1. Electric power ................................................................................................................... 12
1.10.2. Optional instruments....................................................................................................... 12
1.10.3. Thermometer.................................................................................................................... 12
1.10.4. Pressure safety device ..................................................................................................... 12
1.11. Motor connection ................................................................................................................ 13
1.12. Gear-motor standard ........................................................................................................... 13
2. OPERATION .................................................................................................................................. 14

CONTENTS
IOM manual Tapflo Hose Pumps 2
2.1. Before starting the pump........................................................................................................ 14
2.2. Starting and operation ............................................................................................................ 14
2.2.1. Dry running ...................................................................................................................... 15
2.2.2. Dead head......................................................................................................................... 15
2.2.3. Optimization of the pump lifetime ................................................................................ 15
2.3. Pump stopping......................................................................................................................... 15
2.4. Cleaning and disinfection........................................................................................................ 16
2.5. Residual risks............................................................................................................................ 16
2.6. Disposal after expiration of the expected lifetime ............................................................... 16
2.7. Waste of electrical and electronic equipment (WEEE) directive .......................................... 16
2.8. Actions in emergency .............................................................................................................. 16
3. MAINTENANCE ............................................................................................................................ 17
3.1. Inspections................................................................................................................................ 17
3.2. When the pump is new or reassembled................................................................................. 17
3.2.1. Performance test.............................................................................................................. 17
3.3. Routine inspection ................................................................................................................... 17
3.4. Complete inspection ................................................................................................................ 18
3.5. Location of faults ..................................................................................................................... 18
3.6. Disassembly of the pump........................................................................................................ 19
3.6.1. Before the disassembly procedure ................................................................................. 19
3.6.2. Disassembly procedure.................................................................................................... 20
3.6.3. Test run ............................................................................................................................. 22
3.7. Hose cleaning ........................................................................................................................... 23
3.8. Hose replacement .................................................................................................................... 23
3.9. Roller adjustment..................................................................................................................... 27
4. SPARE PARTS................................................................................................................................ 30
4.1. Exploded view PTL9 –PTL17................................................................................................... 30
4.2. Spare parts list PTL9 –PTL17 .................................................................................................. 30
4.3. Exploded view PTL25 –PTL45................................................................................................. 32
4.4. Spare parts list PTL25 –PTL45 ................................................................................................ 32
4.5. Stocking recommendation...................................................................................................... 33
4.6. How to order parts................................................................................................................... 33
4.7. Pump code................................................................................................................................ 34
5. DATA ............................................................................................................................................. 35
5.1. Capacity curves......................................................................................................................... 35
5.2. Technical data .......................................................................................................................... 36

CONTENTS
IOM manual Tapflo Hose Pumps 3
5.3. Dimensions ............................................................................................................................... 37
5.3.1. PTL9 –PTL17......................................................................................................................... 37
5.3.2. PTL25 –PTL45 ...................................................................................................................... 38
5.4. Tightening torques .................................................................................................................. 39
5.5. Permitted loads on manifolds................................................................................................. 40
6. WARRANTY .................................................................................................................................. 41
6.1. Warranty form.......................................................................................................................... 41
6.2. Returning parts ........................................................................................................................ 42
6.3. Warranty ................................................................................................................................... 42

EC DECLARATION OF CONFORMITY 02/EU/PTL/2021
Series: PTL(…)9...; PTL(…)13...; PTL(…)17...; PTL(…)25...; PTL(…)30...; PTL(…)45...
Manufactured by:
Tapflo AB
Filaregatan 4
442 34 Kungälv, Sweden
This declaration of conformity is issued under the sole responsibility of the manufacturer.
Object of declaration: LOW PRESSURE HOSE PUMPS
The object of the declaration described above is in conformity with the relevant Union
harmonisation legislation:
➢Directive 2006/42/EC of European Parliament and of the Council of 17 May 2006 on machinery,
amending Directive 95/16/EC;
➢Directive 2014/30/EU of the European Parliament and of the Council of 26 February 2014 on the
harmonisation of the laws of the Member States relating to electromagnetic compatibility (recast)
Text with EEA relevance
➢Directive 2014/35/EU of the European Parliament and of the Council of 26 February 2014 on the
harmonisation of the laws of the Member States relating to the making available on the market of
electrical equipment designed for use within certain voltage limits Text with EEA relevance

Tapflo Sp. z o.o.
ul. Czatkowska 4b
83-110 Tczew
Signed for and on behalf of Tapflo AB

Managing director
, 14.05.2021 r.

0. GENERAL
IOM manual Tapflo Hose pumps 5
0. GENERAL
0.1. Introduction
The Tapflo Hose Pump range is a series of pumps for industrial and hygienic applications.
The pumps are designed to be safe, simple and easy to use and maintain. The pumps are
suitable for almost all different liquids used by the industry today.
The pumps are powered with an electric motor which is coupled with the rotor. To decrease
the motor rotational speed a gearbox is used.
With proper attention to maintenance, Tapflo Pumps will give efficient and trouble free
operation. This instruction manual will familiarise operators with detailed information about
installing, operating and maintaining of the pump.
When installing, operating and maintaining of the pump unit you must strictly follow the
IOM manual. Otherwise injury or life hazard may occur.
In case any instructions in this manual are unclear or any information is missing, please
contact Tapflo before handling 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 pump 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. In case any instructions in this manual are unclear
or any information is lacking, please contact Tapflo before handling the pump.

0. GENERAL
IOM manual Tapflo Hose pumps 6
0.4. Nameplate
The nameplate is made in the below design. It is made of AISI 304 stainless steel and placed
on the pump stand or discharge flange bracket. Nameplate dimensions are 38 x 48 mm.

1. INSTALLATION
IOM manual Tapflo TE series 7
1. INSTALLATION
1.1. Operation principle
The Tapflo hose pump is driven by a gear-motor. The rotor is installed directly on the shaft and
is equipped with rollers. The rollers compress the hose creating vacuum on the suction side of
the pump and pressure on the discharge to transfer the liquid. The rotary movement of the
rollers compresses the hose along the casing wall, constantly sucking/pushing the liquid
through the hose. The hose is the only part of the pump that is in contact with the liquid.
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. Lifting and transportation
Before handling the pump check the weight of the pump (see 5. Data). Refer to Your local
standards on how to handle the pump. If the weight is excessive to transport by hand it must
be lifted using slings and a suitable lifting device e.g. a crane or forklift.
The pump is equipped with eye bolts to ease transportation.

1. INSTALLATION
IOM manual Tapflo Hose pumps 8
Never lift the pump under pressure.
Be careful that nobody passes under the pump when lifted.
Never try to lift the pump by the manifolds or hoses attached to the pump.
1.4. Storage
If the equipment is to be stored prior to installation, place it in a clean location. The pump

below 65%. It should not be exposed to any heat source e.g. radiator, sun as this could result in
a negative way on the tightness of the pump. Do not remove the protective covers from the
pump.
When in storage, turn the shaft by hand at least twice per month. The pump-motor unit should
always be stored indoor in dry, vibration and dust free conditions. If the pump is to be stored
more than 1 month, remove the hose form the pump. If this is not possible, run the pump 10
min per week.
Spare hoses must be stored in the same conditions as the pump. What is more, they should be
protected from direct sunlight. Rubber materials are subject to aging and their performance
and lifetime decrease with time.
NOTE! Do not remove protective covers from the hose when in storage.
1.5. 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.
1.6. 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.
1.7. 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

1. INSTALLATION
IOM manual Tapflo Hose pumps 9
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.
1.7.1. Connection of suction pipe
Remember that the suction pipe/connection is the most critical point, especially if the pump is
priming. Just a small leakage will dramatically reduce the suction capability of the pump. When
connecting the suction pipe, the following is recommended:
1)
For satisfactory operation, use a reinforced hose (the suction power may otherwise shrink
the hose) or other flexible piping. The internal diameter of the hose should be at least
same as on the suction connection (at the bottom of the pump) to have best suction
capability. If the diameter of a hose is smaller, it will affect the pump's performance or
cause its malfunction.
2)
Make sure that the connection between the hose and the pump is completely tight,
otherwise the suction capability will be reduced.
3)
Always use as short suction pipe as possible. Avoid air pockets which can emerge within
long piping.
1.7.2. Connection of discharge pipe
For this connection it is only recommended to have a simple and positive flow connection. Use
a hose or flexible piping (minimum one meter) between the discharge connection and any rigid
fixed piping. Coil the hose at least one turn. All components (hose, pipe, valves etc.) on the
discharge piping must be designed for appropriate PN, according to pump maximum pressure.
It is recommended to install a check-valve on the discharge side in order to protect the pump
from water hammer effect that can be created in the discharge pipeline. If overpressure in the
discharge line is possible, an appropriate pressure safety device should be installed to protect
the pump. A device must be incorporated into the pump, system, or drive, to prevent the pump
exceeding the rated pressure. Do not allow the pump to operate with a closed/blocked
discharge unless a pressure relief device is installed.
A pressure relief valve must be assembled obligatory on the discharge side by the customer if
overpressure in the system is possible.
1.8. 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.
The pumps are tested with water. If the pumped product can come into reaction with
water, please make sure the pump is dry before putting it into operation.

1. INSTALLATION
IOM manual Tapflo Hose pumps 10
1.8.1. 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.
1.8.2. 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.
1.8.3. 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.
1.8.4. Noise level
Hose pumps, including the motor, in normal operating conditions produce a sound level below
70 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).
1.8.5. 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. Avoid quick temperature
changes and do not exceed the maximum temperature specified when the pump was
ordered. See also general max temperatures based on water in chapter 5. Data
➢When the pump is exposed to ambient temperature variations or if there is big difference
between the temperature of the product and the surrounding, the tightening torques of the
housing nuts should be checked periodically as part of preventive maintenance (please
contact Tapflo for interval proposals). Ambient temperature limits are form -20ºC to +40ºC.
➢If a hot product is pumped, the pump should not stand still when filled for a longer period
of time. This could cause leakage from the pump.
➢
parts made of these materials. This is a hazard that has to be accepted when pumping such
cold products. Also in such case, when a pump is not operational it should be drained of all
liquid.
➢Bear in mind that the viscosity of the product changes with temperature. This has to be
taken into consideration when selecting the pump.

1. INSTALLATION
IOM manual Tapflo Hose pumps 11
➢The fluid remaining in the connected piping, as well as in the pump itself, may expand
because of freezing or heat, which may cause damage to the pump or/and piping, and lead
to leakage of the fluid.
➢Some parts of the hose pump can become hot during operation and cause burns, therefore
make sure to use appropriate protection when handling the pump.
1.8.6. Rotating parts
Do not tamper with the protection of the rotating parts, do not touch or approach rotating
parts in movement.
1.8.7. 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
1.9. Installation recommendations
➢If liquid contains sold particles bigger than max allowable size for the corresponding pump
size, a strainer on the suction side should be used.
➢Manometers or pressure sensors must always be installed on the suction and discharge
side of the pump to determine proper operation of the pump.
➢The suction and dishcarge piping must be fastened properly so that no strain occurs on
the pump manifolds.
➢It is recommended to install a check-valve on the discharge side in order to protect the
pump from water hammer effect that can be created in the discharge pipeline.
➢The suction line should be as short and straight as possible.
➢A gate valve could be installed on the discharge line for easier pump disconnection from
the pipeline (ATTENTION! The gate valve should never be closed during pump
operation).
➢A pressure relief valve must be assembled obligatory on the discharge side by the
customer if overpressure in the system is possible. A device must be incorporated into the
pump, system, or drive, to prevent the pump exceeding the rated pressure.
1.9.1. Minimum required distance for hose removal
During pump installation provide enough space to be able to perform hose replacement
procedure. Please follow the guidline below:
PUMP
L [mm]
PTL9
400
PTL13
400
PTL17
600
PTL25
700
PTL30
1200
PTL45
1500

1. INSTALLATION
IOM manual Tapflo Hose pumps 12
NOTE!
Even if all above safety instructions are met and complied with, there still exists a minor danger
in the event of a leakage or mechanical damage of the pump. In such case the pumped product
can emerge on sealing areas and connections.
1.10. 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 regulation valve. The output can be read on the pressure gauge,
transformed into meters and then compared with the typical curves.
1.10.1. Electric power
The electric power absorbed by the motor can be measured by means of a wattmeter or an
amp gauge.
1.10.2. 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.
1.10.3. Thermometer
If the temperature of the pumped liquid is a critical parameter, provide the installation with a
thermometer (preferably on the suction side).
1.10.4. Pressure safety device
The pump cannot run against higher pressure than stated in this IOM manual. Therefore the
pump must be equipped with an appropriate pressure safety device such as a pressure switch,
bypass line with a pressure relief valve or motor overload protection that will automatically stop
the pump when pressure rises above allowable levels.

1. INSTALLATION
IOM manual Tapflo Hose pumps 13
1.11. 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).
STAR
DELTA
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.
1.12. Gear-motor standard
As a standard Tapflo Hose pump are equipped with gear-motors of the following parameters:
➢International Mounting Arrangement B5
➢Number of poles / Rotation speed [rpm] 4 / 1400
➢Non ATEX
➢Protection grade IP55
➢Voltage 3 phase; 230/400 V; 50 Hz
➢Efficiency class IE3
➢Output rpm 23÷143 @ 50 Hz
➢Thermal protection –PTC
The rated gear-motor rpm should not be exceed. If you want to operate the pump at higher
speed please consult Tapflo for guidelines.

2. OPERATION
IOM manual Tapflo Hose pumps 14
2. OPERATION
2.1. Before starting the pump
➢Make sure the pump is installed according to the installation instructions (chapter 1).
➢Filling of the pump with liquid before start is not necessary.
➢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.
➢The suction shut-off valve (if any) must be completely open.
➢The shut-off valve on the discharge side (if any) must be completely opened.
➢Any auxiliary connections must all be connected.
➢Make sure that the rollers are adjusted correctly, according to the desired process.
➢When installation is new or reinstalled, a test run of the pump with water should be
conducted to make sure that the pump operates normally and does not leak.
➢When installation is new or reinstalled, check the pump housing nuts tightening torque
(see chapter 5.4. Tightening torques). After approximately one week of operation, the
torque should be checked again. This is important to prevent possible leakage.
➢Starting the electrical motor makes the pump run at full capacity!
2.2. Starting and operation
Open the discharge valve and start the electric motor. The pump must not run with completely
closed discharge - these conditions can seriously damage the pump and cause injury to the
operator.
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.
Make sure that pressure on the discharge does not exceed the rated pressure!
A device must be incorporated into the pump, system, or drive, to prevent the pump
exceeding the above rated pressure. Do not allow the pump to operate with a
closed/blocked discharge unless a pressure relief device is installed.
A pressure relief valve must be assembled obligatory on the discharge side by the
customer.
.
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.
The performance of the pump can be adjusted by means of a frequency inverter. The pump
operation does not depend upon the direction of rotation and can achieve full capacity in both
directions of rotation.

2. OPERATION
IOM manual Tapflo Hose pumps 15
2.2.1. Dry running
Although the pump is prepared for dry running it is important to have in mind that long periods
of dry run may cause damage to the wearing parts of the pump. What is more, an empty pump
should operate at low speeds controlled by a frequency inverter.
2.2.2. Dead head
The pump cannot operate with closed discharge valve. This may lead to pump malfunction and
cause injury to operators in the vicinity of the pump.
The discharge pressure can never exceed pump rated pressure.
2.2.3. Optimization of the pump lifetime
➢Continuous operation at higher frequency than 50 Hz will cause premature wear of the
components. As a general rule, we recommend to run       
frequency.
➢When reducing the motor rotation speed, control the gear-motor surface temperature if it
does not exceed the nominal working temperatures stated by the gear-motor
manufacturer.
2.3. Pump stopping
Turn off the motor to stop the pump. Close the discharge shut-off / regulation valve
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. It is therefore
advised to install a check valve on the discharge to protect the pump. If a suction shutoff valve
has been installed, it is advisable to close it completely after pump is fully stopped.
The pump should be stopped by cutting of electrical power to the motor or frequency inverter
(if used at 50 Hz cool down should be set to 5 seconds).
NOTE! Never stop the pump by completely closing the discharge valve without motor shut
down.

2. OPERATION
IOM manual Tapflo Hose pumps 16
2.4. 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.
If the outside of the pump is to be rinsed or flushed, the power supply must be disconnected
beforehand.
2.5. Residual risks
Even with proper application and observance of all points listed in this operating manual, there
is still an estimable and unexpected residual risk when using the pumps. It may leak, fail due to
wear, application-related causes or system-related circumstances.
2.6. Disposal after expiration of the expected lifetime
Pump components can be recycled, it must be disposed of properly, according to local
regulations. It should be noted that potentially dangerous fluid residues may remain in the
pump and can create a hazard to the operator or the environment, therefore the pump has to
thoroughly cleaned before disposal.
2.7. Waste of electrical and electronic equipment (WEEE) directive
Users of electrical and electronic equipment (EEE) with the WEEE
marking per Annex IV of the WEEE Directive must not dispose of end
of life EEE as unsorted municipal waste, but use the collection
framework available to them for the return, recycle, recovery of WEEE
and minimize any potential effects of EEE on the environment and
human health due to the presence of hazardous substances. The WEEE
marking applies only to countries within the European Union (EU) and Norway. Appliances are
labelled in accordance with European Directive 2002/96/EC. Contact your local waste recovery
agency for a designated collection facility in your area.
2.8. Actions in emergency
In case of a leakage of an unknown fluid, respiratory protection should be worn and contact
with the fluid avoided. During firefighting, no special hazards are to be expected from the
pump itself. In addition, the currently handled fluid and the corresponding safety data sheet
must be taken into account. When fluid leakage occurs, the power supply has to be closed and
the pressure released. During spillage of an aggressive liquid, local and national safety rules
must be followed.

3. MAINTENANCE
IOM manual Tapflo Hose pumps 17
3. MAINTENANCE
Maintenance work on electrical installations must be performed by qualified
personnel and only when the power supply has been shut off. Wait five minutes
for capacitor to discharge before opening the pump. Follow the local and
national safety regulations.
Due to size of some of the pumps at least two persons should perform maintenance
activities and if needed use appropriate lifting devices according to local rules and
regulations.
3.1. Inspections
➢Periodically check suction and discharge pressures.
➢Inspect the gear-motor according to the instructions from the motor manufacturer.
➢Gearbox oil must be exchanged in accordance with the gearbox manufacturer instruction
manual.
3.2. When the pump is new or reassembled
If the pump is new or reassembled after maintenance it is important to retighten the
screwed connections after one week of operation.
Make sure to use the right torque see chapter 5.4. Tightening torques.
3.2.1. Performance test
When installation is new, a test run of the pump should be conducted. Gauge the capacity
at specific pump speed. This information is useful for checking performance in the future as
wear takes place. You will be able to set schedules for maintenance of the pump and to select
spare parts to be kept on stock.
3.3. Routine inspection
Frequent observation of the pump operation is recommended to detect problems. A change
in sound of the running pump can be an indication of wearing parts (see chapter 3.5
"Location of faults" below). Hose damage can be the main reason of liquid leakage therefore
it is advisable to install a hose rupture monitoring system that can detect the hose damage
and stop the pump when liquid enters the pump chamber.
Leaking liquid from the pump and changes of performance may also be detected. Routine
inspections should be conducted frequently. We recommend to conduct a daily check and
keep records of the following:
➢Leakage of fluid form any connection of the pump
➢Tightness of all connection parts of the pump and any peripheral equipment
➢Complete inspection in regular intervals has been done
In case any of the above is not fulfilled, do not start the pump and implement corrective
actions.

maintenance is especially important to prevent spills or leakage due to hose failure.

3. MAINTENANCE
IOM manual Tapflo Hose pumps 18
3.4. Complete inspection
The intervals for a complete inspection depend upon the operation conditions of the pump.
The characteristics of the liquid, temperature, materials used in the pump and running time
decide how often a complete inspection is necessary.
Nevertheless, Tapflo recommends to inspect the pump at least once a year.
If a problem has occurred, or if the pump is in need of a complete inspection, refer to
chapters 3.5 "Location of faults" and 3.6"Disassembly of the pump". You are of course warmly
welcome to consult Tapflo for further help.
Parts that are subject to wear should be kept in stock, see our recommendations in chapter
4.7 “Stocking recommendation”.
3.5. Location of faults
PROBLEM
POSSIBLE ISSUE
POSSIBLE SOLUTION
Pump does not run
Lack of power supply
Check if the motor is connected properly
Check if power supply is ON
The rotor is stalling
Check the fixing of the hose
Check if the discharge pressure is not too high
Check if particles are not blocking the hose
The suction is bad
Suction connection is not tight
Tighten the suction line
Suction connection is blocked
Clean suction line
Hose is blocked or damaged
Check for any debris inside the hose
Air in suction / discharge line
Vent suction / discharge line
The pump runs irregular
Hose is blocked or damaged
Check for any debris inside the hose
Bad flow/pressure
Wrong set-up of the rollers
Check and adjust if necessary
Suction blocked
Check / clean suction connection
Pressure losses on suction side
Check/change installation on suction side
Too viscous liquid
Check if pump speed is proper for viscosity
Air in liquid
Seal suction line; check / refill container
Hose is blocked or damaged
Check for any debris inside the hose, replace hose
if necessary
Liquid leaks from the pump
Screws on the pump not properly
tightened
Shaft seal or seal ring worn
Tension / stress form the installation
Check tightening torques of the screws
Replace if necessary
Adjust installation, eliminate stress, when using a
dampener provide separate support for it.
Hose life is too short
Wrong selection of material
Long periods of dry running
Too high discharge pressure
Too high speed
Wrong set-up of the rollers
Too high liquid temperature
Contact us for information on material selection
When dry, run pump slowly (see chapter 2.2)
Check if pump rated pressure is not exceeded
Check if the discharge line is not blocked
Reduce the pump speed
Check and adjust if necessary
Contact us for information on material selection
Overheating of motor
Flow rate too high
Liquid parameters different than
calculated
Reduce the flow / rotation speed of the motor
Check pumped liquid parameters
Overheating of the pump
Flow rate too high
Liquid temperature too high
Foreign objects in the liquid
Pump is not filled with liquid
Reduce the flow / rotation speed of the motor
Cool the liquid
Use a filter on the suction side
Fill pump with liquid
Noise and vibration
The pump sucks air
Suction pipe is blocked
Flow rate too high
Loads on the pipes
Make sure all connections are tight
Check pipes / valves and filters on suction line
Reduce the flow / rotation speed of the motor
Connect the pipes independent of the pump

3. MAINTENANCE
IOM manual Tapflo Hose pumps 19
Foreign objects in the liquid
Liquid parameters different than
calculated
Use a filter on the suction side
Checked pumped liquid parameters
Abnormal wear
The pump sucks air
Liquid temperature too high
Loads on the pipes
Foreign objects in the liquid
Make sure all connections are tight
Cool the liquid
Connect the pipes independent of the pump
Use a filter on the suction side
3.6. Disassembly of the pump
The numbers put in brackets, refer to the part numbers in the spare part drawings and spare
part lists in chapter 4.“Spare parts”.
The disassembly should be performed only by qualified personnel. There should always be at
least two persons present during disassembly.
Each operation to be fulfilled with 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.
3.6.1. Before the disassembly procedure
Be sure to drain all liquid from the pump. Cleanse or neutralize the pump thoroughly.
Disconnect the electrical connection, air supply and then the suction and discharge
connections.