SCHMITT U Series Installation instructions

Series U, UP and UP-DO
Centrifugal pumps with
mechanical seal
Original operating manual
Version
Print-No. 11334/0923
SCHMITT-Kreiselpumpen GmbH & Co. KG
Einsteinstraße 33
76275 Ettlingen
Germany
Phone: + 49 (0) 7243 / 54 53 - 0
Fax: + 49 (0) 7243 / 54 53 - 22
E-mail: [email protected]
Internet: www.schmitt-pumpen.de
Subject to technical modifications.
Read carefully before use.
Save for future use.

Table of contents
Table of contents
1 About this document ............................... 5
1.1 Target groups ................................. 5
1.2 Other applicable documents ................ 5
1.3 Warnings and symbols ....................... 6
2 General safety instructions ....................... 7
2.1 Intended use .................................. 7
2.2 General safety instructions .................. 7
2.2.1 Product safety ................................ 7
2.2.2 Obligations of the operating company ... . . . 7
2.2.3 Obligations of personnel ..................... 8
2.3 Specific hazards .............................. 8
2.3.1 Potentially explosive atmospheres ... . . . .. . . 8
2.3.2 Electric shock ................................. 8
2.3.3 Hazardous pumped media sprayed
out ............................................. 9
2.3.4 Moving parts .................................. 9
2.3.5 Hot surfaces .................................. 9
3 Layout and Function ............................... 10
3.1 Marking ....................................... 10
3.1.1 Name plate ................................... 10
3.1.2 ATEX type plate .............................. 10
3.2 Description .................................... 10
3.3 Assembly ..................................... 11
3.4 Mechanical seal .............................. 12
4 Transport, Storage and Disposal ................. 13
4.1 Transport ...................................... 13
4.1.1 Unpacking and inspection on delivery .... . . 13
4.1.2 Lifting .......................................... 13
4.2 Storage ....................................... 13
4.3 Disposal ....................................... 13
5 Installation and connection ....................... 14
5.1 Preparing for installation ..................... 14
5.1.1 Check operating conditions ................. 14
5.1.2 Preparing the installation site ............... 14
5.1.3 Prepare surface .............................. 14
5.2 Setting up ..................................... 14
5.3 Planning pipelines ............................ 14
5.3.1 Designing pipelines .......................... 14
5.3.2 Arranging the supports and connec-
tions ........................................... 14
5.3.3 Specifying nominal widths ................... 14
5.3.4 Specifying pipe lengths ...................... 15
5.3.5 Optimizing changes of cross section and
direction ....................................... 15
5.3.6 Providing safety and control devices
(recommended) .............................. 15
5.4 Connecting the pipes ........................ 15
5.4.1 Keeping the piping clean .................... 15
5.4.2 Installing suction pipe ........................ 15
5.4.3 Installing the pressure pipe .................. 15
5.4.4 Mounting the sealing liquid supply for the
UP-DO ....................................... 16
5.4.5 Inspection for stress-free pipe
connections ................................... 16
5.5 Electrical connection ......................... 16
5.5.1 Connecting the motor ........................ 16
5.5.2 Check direction of rotation ................... 16
6Operation ............................................ 17
6.1 Preparing for commissioning ................ 17
6.1.1 Check downtimes ............................ 17
6.1.2 Prepare the sealing liquid supply for the
UP-DO ........................................ 17
6.1.3 Filling and bleeding .......................... 17
6.1.4 Check direction of rotation ................... 17
6.2 Commissioning ............................... 17
6.2.1 Switching on .................................. 17
6.2.2 Switching off .................................. 17
6.3 Shutting down the pump ..................... 18
6.4 Restoring the pump to service .............. 18
6.5 Operating the stand-by pump ............... 18
7 Maintenance ......................................... 19
7.1 Inspections ................................... 19
7.2 Servicing ...................................... 19
7.2.1 Maintenance in accordance with maintenance
schedule ...................................... 19
7.2.2 Maintaining the mechanical seal and shaft
sleeve ......................................... 19
7.2.3 Cleaning the pump ........................... 20
7.3 Dismounting .................................. 21
7.3.1 Preparations for dismounting ................ 21
7.3.2 Dismount the pump .......................... 21
7.4 Replacement parts and return .............. 22
7.5 Installing ...................................... 22
7.5.1 Preparations for installation ................. 22
7.5.2 Installing the pump ........................... 22
7.5.3 Install the pump into the system . . . . .... . . . . 23
8 Troubleshooting .................................... 24
9 Appendix ............................................. 27
9.1 Replacement parts ........................... 27
9.1.1 Part numbers and designations . . ... . . . . .. . . 27
9.1.2 Drawings ...................................... 28
9.2 Technical specifications ...................... 30
9.2.1 Ambient conditions ........................... 30
9.2.2 Total pressure ................................ 30
9.2.3 Shaft sleeve installation dimensions ........ 30
9.2.4 Sound pressure level ........................ 31
9.2.5 Tightening torques of casing screws ........ 31
9.2.6 Flow rate ...................................... 31
9.2.7 Cleaning agents .............................. 31
9.2.8 Sealing liquid ................................. 31
9.3 Maintenance schedule ....................... 32
2U/UP/UP-DO 11334/0923

Table of contents
9.4 Declaration of conformity in accordance with
EC machinery directive ...................... 33
11334/0923 U / UP / UP-DO 3

Table of contents
List of figures
Fig. 1 Name plate (example) ....................... 10
Fig. 2 ATEX type plate (example) .................. 10
Fig. 3 Layout of series U ............................ 11
Fig. 4 Layout of series UP .......................... 11
Fig. 5 Layout of series UP-DO ..................... 12
Fig. 6 Attach the lifting gear to the modular pump
(illustration of general principle) ............. 13
Fig. 7 Straight pipe lengths in front and after the
pumps (recommended) ...................... 15
Fig. 8 Connection diagram for the sealing liquid
supply ......................................... 16
Fig. 9 Parts (sectional drawing) .................... 28
Fig. 10 Parts (exploded drawing), example series
U ............................................... 29
Fig. 11 Shaft sleeve installation dimensions ........ 30
List of tables
Tab. 1 Other application documents, purpose and
where found .................................. 5
Tab. 2 Warning signs and consequences if
disregarded ................................... 6
Tab. 3 Symbols and their meaning ................. 6
Tab. 4 Measures to be taken if the pump is shut
down .......................................... 18
Tab. 5 Measures depending on the behavior of the
pumped liquid ................................ 18
Tab. 6 Fault/number assignment ................... 24
Tab. 7 Troubleshooting list .......................... 26
Tab. 8 Designation of components according to part
numbers ...................................... 27
Tab. 9 Ambient conditions ........................... 30
Tab. 10 Total pressure ................................ 30
Tab. 11 Installation dimensions ...................... 30
Tab. 12 Sound pressure level ........................ 31
Tab. 13 Tightening torques of casing screws . . . . . . . . 31
Tab. 14 Flow rate ...................................... 31
Tab. 15 Characteristics of the sealing liquid ..... . . .. 31
Tab. 16 Maintenance schedule ....................... 32
4U/UP/UP-DO 11334/0923

About this document
1 About this document
This manual:
• is an integral part of the pump
• applies to all series referred to
• describes safe and proper operation during all operating
phases
1.1 Target groups
Operating company
• Responsibilities:
– Always keep this manual accessible where the device
is used on the system.
– Ensure that employees read and observe this docu-
ment, particularly the safety instructions and warnings,
and the documents which also apply.
– Observe any additional country-specific rules and reg-
ulations that relate to the system.
Qualified personnel, fitter
• Mechanics qualification:
– Qualified employees with additional training for fitting
the respective pipework
• Electrical qualification:
– Qualified electrician
• Transport qualification:
– Qualified transport specialist
• Responsibility:
– Read, observe and follow this manual and the other
applicable documents, especially all safety instructions
and warnings.
1.2 Other applicable documents
Document/purpose Where found
The following documents are available
online:
• ATEX additional instructions
•Resistancelists
– Resistance of materials used
to chemicals
• Data sheet
– Technical specifications,
operating conditions,
dimensions
•www.schmitt-pumpen.de/en/
services/downloads
Spare parts list
• Ordering spare parts
Sectional drawing
• Sectional drawing, part numbers,
component designations
Documentation for the drive
• Technical documentation for drives
Documentation
included
Declaration of conformity
• Conformity with standards
•(→9.4 Declaration of conformity in accordance with
EC machinery directive, Page 33).
Tab. 1 Other application documents, purpose
and where found
11334/0923 U / UP / UP-DO 5

About this document
1.3 Warnings and symbols
Warning sign Level of risk Consequences if disregarded
DANGER immediate acute risk Death, serious bodily harm
potentially acute risk Death, serious bodily harm
CAUTION potentially hazardous situation Minor injury
NOTE potentially hazardous situation Material damage
Tab. 2 Warning signs and consequences if disregarded
Symbol Meaning
Safety warning sign
Take note of all information highlighted by the safety warning sign
and follow the instructions to avoid injury or death.
Instruction
1., 2., ... Multiple-step instructions
Precondition
→Cross reference
Information, notes
Tab. 3 Symbols and their meaning
6U/UP/UP-DO 11334/0923

General safety instructions
2 General safety instructions
The manufacturer accepts no liability for damages caused
by disregarding any of the documentation.
2.1 Intended use
• Only use the pump with suitable media. Pump parts in con-
tact with media must be resistant to the media. (→Order
specification).
• Use the pump for flammable or explosive media only if it
is intended for use in potentially explosive atmospheres
(→ATEX additional instructions).
• Adhere to the operating limits and size-dependent mini-
mum flow rates.
• Avoid dry running:
Initial damage, such as destruction of mechanical seals,
seals and plastic parts, will occur within a few seconds.
– Make sure the pump is only operated only when filled
with the conveyed fluid and vented, and never operated
when not filled with the pumped liquid.
– Ensure that there are no excessively high amounts of
gas in the pumping medium.
– Ensure that the pump is operated only within the per-
missible operating range.
– Ensure that the use of shut-off valves or filters does not
cause the pressure on the inlet side of the pump to be
too low.
• Avoid cavitation:
– Open the suction-side fitting and do not use it to regu-
late the flow.
– Do not open the pressure-side fitting beyond the
agreed operating point.
• Avoid overheating:
– Do not operate the pump while the pressure-side fitting
is closed.
– Note minimum flow (→Data sheet).
• Avoid damage to the motor:
– Do not open the pressure-side fitting beyond the
agreed operating point.
– Note the maximum permissible number of times the
motor can be switched on per hour (→manufacturer's
specifications).
• Consult with the manufacturer regarding any other use of
the device.
Prevention of obvious misuse (examples)
• Observe pump limits of use regarding temperature, pres-
sure, flow and speed (→data sheet).
• The power consumption of the pump increases as the spe-
cific gravity of the pumped fluid increases. Adhere to the
permissible specific gravity in order to eliminate the possi-
bility that the pump and motor become overloaded (→data
sheet).
A lower specific gravity is permissible. Adapt the auxiliary
systems accordingly.
• When conveying fluids containing solids, observe the limit
values for proportions of solid particles and particle size:
–Particlesize≤3mm
– Proportion of solid particles ≤10 % Vol.
• The type of installation should be selected only in accor-
dance with these operating instructions. For example, the
following are not allowed:
– Hanging pumps in the pipe
– Overhead installation
– Installation in the immediate vicinity of extreme heat or
cold sources
– Installationtooclosetoawall
– Vertical installation
2.2 General safety instructions
Observe the following regulations before carrying out any
work.
2.2.1 Product safety
The pump has been built according to state-of-the-art technol-
ogy and the recognized technical safety regulations. Never-
theless, operation of the pump can still put the life and health
of the user or third parties at risk or damage the pump or other
property.
• Operate the pump only if it is in perfect technical condition
and use it only as intended, staying aware of safety and
risks, and in adherence to the instructions in this manual.
• Keep this manual and all other applicable documents com-
plete, legible and accessible to personnel at all times.
• Refrain from any procedures and actions that would pose
a risk to personnel or third parties.
• In the event of any safety-relevant faults, shut down the
pump immediately and have the fault corrected by appro-
priate personnel.
• In addition to the entire documentation for the product,
comply with statutory or other safety and accident-preven-
tion regulations and the applicable standards and guide-
lines in the country where the pump is operated.
2.2.2 Obligations of the operating company
Safety-conscious working
• Operate the pump only if it is in perfect technical condition
and use it only as intended, staying aware of safety and
risks, and in adherence to the instructions in this manual.
• Ensure that the following safety aspects are observed and
monitored:
– Intended use
– Statutory or other safety and accident-prevention reg-
ulations
– Safety regulations governing the handling of haz-
ardous substances
– Applicable standards and guidelines in the country
where the pump is operated
– Applicable guidelines of the operator
• Make personal protective equipment available.
11334/0923 U / UP / UP-DO 7

General safety instructions
Qualified personnel
• Make sure all personnel tasked with work on the pump
have read and understood this manual and all other appli-
cable documents, especially the safety, maintenance and
repair information, before they start any work.
• Organize responsibilities, areas of competence and the
supervision of personnel.
• Make sure that trainee personnel only work on the pump
under supervision of specialist technicians.
• All activities may be carried out only by specialists who hold
the required qualifications:
Actions Required qualified
personnel
Mechanical work
(installation, maintenance,
servicing)
Skilled mechanic
Electrical work
(electrical installation)
Qualified electrician
All further work Instruction by the
user/owner
Safety equipment
• Provide the following safety equipment and verify its func-
tionality:
– For hot, cold and moving parts: pump safety guarding
provided by the customer
– For pumps without capability to run dry: Dry run pro-
tection
Warranty
• Obtain the manufacturer's approval prior to carrying out
any modifications, repairs or alterations during the warranty
period.
• Only use genuine parts or parts that have been approved
by the manufacturer.
2.2.3 Obligations of personnel
• All directions given on the pump must be followed (and kept
legible), e.g. the arrow indicating the sense of rotation and
the markings for fluid connections.
• Pump, safety guarding and components:
– Do not step on them or use as a climbing aid
– Do not use them to support boards, ramps or beams
– Do not use them as a fixing point for winches or sup-
ports
– Do not use them for storing paper or similar materials
• Do not remove the safety guarding for hot, cold or moving
parts during operation.
• If necessary, use protective equipment for the specific
application:
–Helmet
– Safety gloves
– Safety goggles
–Gloves
– Further protective equipment depending on the
medium being pumped
• Only carry out work on the pump while it is not running.
• Before all installation and maintenance work, disconnect
the motor from the mains and secure it against being
switched back on again.
• Never reach into the suction or discharge flange.
• Following all work on the pump, refit safety devices in
accordance with the instructions and bring into service.
• Do not make any modifications to the device.
2.3 Specific hazards
2.3.1 Potentially explosive atmospheres
Observe ATEX additional manual
• Additional instructions for use in explosive atmospheres
•(→www.schmitt-pumpen.de/sites/default/files/2020-10/
ATEX-Zusatzanleitung-en.pdf)
2.3.2 Electric shock
In the event of contact with live parts (e.g. wires in the termi-
nal box of the electric motor), there is a risk of electric shock
resulting in serious injury or death.
• All electrical work must be carried out by qualified electri-
cians only.
• Before all work on the electrical system, disconnect the
motor from the mains and secure against being switched
back on again.
8U/UP/UP-DO 11334/0923

General safety instructions
2.3.3 Hazardous pumped media sprayed out
Pumped media can be toxic and hot and can be sprayed out.
In the event of contact, there is a risk of burns and skin rashes.
• When handling hazardous fluids (e.g. hot, flammable,
explosive, toxic, hazardous to health or the environment),
observe the safety regulations for the handling of haz-
ardous substances.
• Allow the pump to cool completely before commencing any
work and then depressurize it.
• Use protective equipment for any work on the pump.
• Empty the pump during maintenance and repair work.
• Safely collect the fluid and dispose of it in accordance with
environmental regulations.
2.3.4 Moving parts
Moving parts (e.g. shaft, impeller, coupling) present a risk of
fatal injury due to being dragged in, crushed or trapped.
• Do not touch the pump when it is running.
• Do not carry out any work on the pump when it is running.
• Maintain an adequate distance from moving parts.
• When performing installation and maintenance work, dis-
connect the motor from the mains and secure it against
being switched back on again.
• (If present) ensure contact guard is fitted after work on the
pump.
2.3.5 Hot surfaces
During operation, high temperatures are generated on the sur-
faces of the housing. Even after switching off, the surfaces
of the housing can still be hot and can cool down only slowly.
There is a risk of burns when touching hot surfaces.
• Do not touch the pump when it is running.
• Allow the pump to cool completely before commencing any
work.
• Wear protective gloves.
11334/0923 U / UP / UP-DO 9

Layout and Function
3 Layout and Function
3.1 Marking
3.1.1 Name plate
D-76275 Elingen, Germany
www.schmi-pumpen.de Tel.: [phone]
Arkel / Ref. No.: 01215111
Typ / Type: U 130 PVDF ET 800 PTFE/Keramik
Baujahr / Mfg date: 12/2015
SCHMITT - Kreiselpumpen
1
2
3
45 67 8
Fig. 1 Name plate (example)
1 Article numbers
2Type
3 Year of manufacture (month/year)
4 Pump series
5Size
6 Pump material
7 Immersion depth
8Version
3.1.2 ATEX type plate
D-76275 Elingen, Germany
www.schmi-pumpen.de Tel.: [phone]
Arkel / Ref. No.: 01215111
Typ / Type: U130 PVDF ET 800
Baujahr / Mfg date: 12/2015
SCHMITT - Kreiselpumpen
II 3G Ex h IIB T3
1
Fig. 2 ATEX type plate (example)
1 Explosion protection label
3.2 Description
Non-self-priming centrifugal pump in modular construction:
• Horizontal installation
• Direction of conveying
– Suction flange, axial
– Discharge flange, vertical
•SeriesU
– Single acting mechanical seal
– Housing and impeller made of plastic
– For conveying acids, lyes and corrosive medias up to
95 °C
•SeriesUP
– Single acting mechanical seal
– Housing and impeller made of stainless steel
– For conveying weak acids, lyes, corrosive media and
emulsions at 150 °C
•SeriesUP-DO
– Double acting mechanical seal
– Housing and impeller made of stainless steel
– For conveying weak acids, lyes, corrosive media and
emulsions at 150 °C
10 U / UP / UP-DO 11334/0923

Layout and Function
3.3 Assembly
12 3 5
9
7
4 6 8
Fig. 3 Layout of series U
134 7
9
65
2
8
Fig. 4 Layout of series UP
11334/0923 U / UP / UP-DO 11

Layout and Function
134 12
9
1110
2
678
5
Fig. 5 Layout of series UP-DO
1 Suction branch
2 Housing
3 Discharge flange
4Cover
5 Mechanical seal (concealed)
6 Flange with shaft protection
7 Motor
8 Terminal box
9 Motor foot
10 Hose nozzle
11 Sealing liquid container
12 Insert
3.4 Mechanical seal
Mechanical seals have a functional leak.
Mechanical seal, following version:
• Single-acting (series U, UP)
• Double-acting (series UP-DO)
• Spring-loaded
• Media-lubricated
• Suitable for conveying pumped liquids with a low solid con-
tent(upto3mmgrainsizeand10%vol.)
12 U / UP / UP-DO 11334/0923

Transport, Storage and Disposal
4 Transport, Storage and
Disposal
4.1 Transport
The user/owner is responsible for the transport of the
pump.
Weight specification (→Data sheet)
4.1.1 Unpacking and inspection on delivery
1. Unpack the pump/machine drive on delivery, and inspect it
for transport damage.
2. Check completeness and accuracy of delivery.
3. Ensure that the information on the name plate agrees with
the order/design data.
4. Report any transportation damage to the manufacturer
immediately.
5. Dispose of packaging material according to local regula-
tions.
4.1.2 Lifting
DANGER
Death or limbs crushed as a result transported items
falling over!
Use lifting gear appropriate for the total weight to be trans-
ported.
Attach lifting gear in accordance with the following diagram.
Do not stand under suspended loads.
Fig. 6 Attach the lifting gear to the modular pump
(illustration of general principle)
1. Attach lifting gear in accordance with the above diagram.
2. Lift the modular pump appropriately.
4.2 Storage
NOTE
Material damage due to inappropriate storage!
Store the pump properly.
1. Seal all openings with blind plugs or plastic covers.
2. Make sure the storage room meets the following condi-
tions:
–Dry
– Frost-free
– Vibration-free
–UVprotected
3. Rotatethepumpshafttwiceamonth.
4. Make sure the shaft and bearing change their rotational
position in the process.
4.3 Disposal
Plastic parts can be contaminated by poisonous or radioac-
tive pumped liquids to such an extent that cleaning will be
insufficient.
WARNING
Risk of poisoning and environmental damage by the
pumped liquid!
Use personal protective equipment when carrying out any
work on the pump.
Prior to the disposal of the pump:
– Collect and damage any escaping pumped liquid in
accordance with local regulations.
– Neutralize residues of pumped liquid in the pump.
Remove plastic parts and damage them in accordance with
local regulations.
Dispose of the pump in accordance with local regulations.
11334/0923 U / UP / UP-DO 13

Installation and connection
5 Installation and connection
For pumps in potentially explosive atmospheres (→ATEX
additional manual).
NOTE
Material damage caused by dirt!
Do not remove the transport seals until immediately before
installing the pump.
Do not remove any covers or transport and sealing covers
until immediately before connecting the pipes to the pump.
5.1 Preparing for installation
5.1.1 Check operating conditions
Ensure the required operating conditions are met:
– Resistance of body and seal material to the medium
(→resistance lists).
– Required ambient conditions
(→9.2.1 Ambient conditions, Page 30).
5.1.2 Preparing the installation site
Ensure the installation site meets the following conditions:
– Pump is freely accessible from all sides
– Sufficient space for the installation/removal of the pipes
and for maintenance and repair work, especially for the
removal and installation of the pump
– Pump not exposed to external vibration (damage to
bearings)
– Pump not exposed to external corrosive influences
– Frost protection
5.1.3 Prepare surface
Aids, tools, materials:
– Spirit level
Ensure the surface meet the following conditions:
– Level and horizontal
– Clean (no oil, dust or other impurities)
– Capable of bearing the weight of the machine drive and
all operating forces
– Ensures the stability of the machine drive
5.2 Setting up
1. Lift up the machine drive (→4.1 Transport, Page 13).
2. Put down the machine drive at the place of installation.
3. Screw the attachment bolts into the motor foot and tighten
them.
5.3 Planning pipelines
Water hammer may damage the pump or the system. Plan
the pipes and fittings as far as possible to prevent water
hammer occurring.
5.3.1 Designing pipelines
Plan pipes safely:
– No pulling or thrusting forces
– No bending moments
– Adjust for changes in length due to temperature
changes (compensators, expansion shanks)
– Avoid bends close to the suction flange
5.3.2 Arranging the supports and connections
NOTE
Material damage due to excessive forces and torques on
the pump!
Ensure pipe connection without stress.
1. Support pipes in front of the pump.
2. Ensure the pipe supports will always allow expansion and
contraction of the pipes.
5.3.3 Specifying nominal widths
Keep the flow resistance in the pipes as low as possible.
1. Make sure the nominal suction line width is not smaller than
the nominal suction flange width.
2. Make sure the nominal pressure line width is not smaller
than the nominal discharge flange width.
14 U / UP / UP-DO 11334/0923

Installation and connection
5.3.4 Specifying pipe lengths
C
D
B
A
Fig. 7 Straight pipe lengths in front and after the
pumps (recommended)
A>5xDNs
BDNs
CDNd
D>5xDNd
Observe recommended minimum values when installing
the pump.
Suction side: Shorter lengths are possible, but may limit
hydraulic performance data.
Pressure side: Shorter lengths are possible, but may result
in increased noise development.
5.3.5 Optimizing changes of cross section and
direction
1. Avoid radii of curvature of less than 1.5 times the nominal
pipe diameter.
2. Avoid abrupt changes of cross-section along the piping.
5.3.6 Providing safety and control devices
(recommended)
Avoid contamination
1. Install a dirt strainer with mesh size < 3 mm in the suction
pipe.
2. Install a differential pressure gauge with contact manome-
ter to monitor contamination.
Avoid reverse running
1. Install a non-return fitting between the discharge flange and
stop fitting, to ensure that the medium does not flow back
after the pump is switched off.
2. In order to enable venting, include vent connection
between discharge flanges and non-return fitting.
Make provisions for isolating and shutting off the pipes
For maintenance and repair work.
Provide shut-off valves in the suction pipe and pressure
line.
Dry run protection by measuring the operating conditions
Provide monitoring sensors for both pressure and flow rate,
to protect the pump against dry running and consequential
damage.
5.4 Connecting the pipes
NOTE
Material damage due to excessive forces and torques on
the pump!
Ensure pipe connection without stress.
5.4.1 Keeping the piping clean
NOTE
Material damage due to impurities in the pump!
Make sure no impurities can enter the pump.
Clean all piping parts and fittings prior to assembly.
5.4.2 Installing suction pipe
1. Remove the transport and sealing covers from the pump.
2. For intake operation always lay the suction line descending
to the pump.
3. Fit suction pipe stress-free and sealed.
5.4.3 Installing the pressure pipe
1. Remove the transport and sealing covers from the pump.
2. Position the pressure flange facing upwards, so as to allow
the pump head to be vented.
3. Fit the pressure line stress-free and sealed.
11334/0923 U / UP / UP-DO 15

Installation and connection
5.4.4 Mounting the sealing liquid supply for the UP-DO
bar
12 3
4
⌀13 mm
Fig. 8 Connection diagram for the sealing liquid supply
1. Connect the hose lines (1, 4) to the hose connectors for the
flow direction indicated and so that they are free of stress.
2. Install the pressure indicator (2) and shut-off valves (3) in
the hose lines.
5.4.5 Inspection for stress-free pipe connections
Piping installed and cooled down
1. Disconnect the pipe connections from the pump.
2. Check whether the pipes can be moved freely in all direc-
tions within the expected range of expansion.
3. Make sure that the connections are parallel.
4. Reconnect the pipe connections to the pump.
5.5 Electrical connection
DANGER
Risk of electrocution!
All electrical work must be carried out only by qualified elec-
tricians.
Before all work on the electrical system, disconnect the
motor from the mains and secure against being switched
back on again.
5.5.1 Connecting the motor
Follow the instructions of the motor manufacturer.
1. Connect the motor according to the connection diagram.
2. Make sure no danger arises due to electric power.
3. Install an EMERGENCY STOP switch.
5.5.2 Check direction of rotation
Only possible when starting up (→6.2 Commissioning,
Page 17).
16 U / UP / UP-DO 11334/0923

Operation
6 Operation
For pumps in potentially explosive atmospheres (→ATEX
additional manual).
6.1 Preparing for commissioning
6.1.1 Check downtimes
Before starting up the pump, check the downtime and per-
form the following actions:
– Check the fill level.
– If the hydraulic parts are dirty, clean them.
– Check that the impeller runs freely.
6.1.2 Prepare the sealing liquid supply for the UP-DO
1. Ensure that the sealing liquid is appropriate to mix with the
pumped medium.
2. Switch on the sealing liquid supply and ensure the required
parameters are met (→9.2.8 Sealing liquid, Page 31).
6.1.3 Filling and bleeding
1. Open the suction-side fitting.
2. Open the pressure-side fitting.
3. Fill pump and suction pipe with fluid.
4. Verify that no pipe connections are leaking.
6.1.4 Check direction of rotation
NOTE
Material damage as a result of dry running!
Make sure the pump is filled properly.
1. Switch on motor for max. 2 seconds and switch it off again
immediately.
2. Visually check the direction of rotation of the motor fan
impeller and make sure that the direction of rotation of the
motor matches the direction arrow on the pump casing.
3. If the sense of rotation is different: Change over the two
phases (→5.5 Electrical connection, Page 16).
6.2 Commissioning
6.2.1 Switching on
Pump set up and connected properly
Motor set up and connected properly
All connections stress-free and sealed
All safety equipment installed and tested for functionality
SealingliquidsupplypreparedfortheUP-DO
Pump prepared, filled and vented correctly
NOTE
Risk of cavitation if suction flow is restricted!
Open the suction-side fitting and do not use it to regulate
the flow.
Do not open the pressure-side fitting beyond the operating
point.
NOTE
Material damage due to overheating!
Do not operate the pump for long periods with the pressure-
side fitting closed.
Observe the minimum flow rate (→9.2.6 Flow rate,
Page 31).
NOTE
Material damage as a result of dry running!
Make sure the pump is filled properly.
1. Open the suction-side fitting.
2. Close the pressure-side fitting.
3. Switch on the motor and check it for smooth running.
4. Once the motor has reached its nominal speed, open
the pressure-side fitting slowly until the operating point is
reached.
5. Make sure temperature change is smaller than 5 K/min for
pumps with hot fluids.
6. After the initial stress due to the pressure and operating
temperature, check that the pump is not leaking.
7. If leaks are present at the casing seals or connection
flanges, proceed as follows:
–Switchoffmotor.
– Close the control valves.
– Remedy the leaks.
6.2.2 Switching off
Pressure-side fitting closed (recommended)
1. Switch off motor.
2. Check all connecting bolts and tighten them to the speci-
fied torque (→9.2.5 Tightening torques of casing screws,
Page 31).
11334/0923 U / UP / UP-DO 17

Operation
6.3 Shutting down the pump
Take the following measures whenever the pump is shut
down:
Pump is Measure
shut down Take measures appropriate for
the fluid (→Tab. 5 Measures
depending on the behavior of
the pumped liquid, Page 18).
…emptied Close suction and pressure-side
fitting.
…dismounted Isolate the motor from its power
supply and secure it against
unauthorized switch-on.
…put into
storage
Note measures for storage
(→4.2 Storage, Page 13).
Tab. 4 Measures to be taken if the pump is shut down
Duration of shutdown (depending
on process)
Behavior of the
pumped liquid
Short Long
Crystallized or
polymerized,
solids
sedimenting
Flush the
pump.
Flush the
pump.
Solidifying/
freezing,
non-corrosive
Heat up or
empty the
pump and
containers.
Empty the
pump and
containers.
Solidifying/
freezing,
corrosive
Heat up or
empty the
pump and
containers.
Empty the
pump and
containers.
Remains liquid,
non-corrosive
––
Remains liquid,
corrosive
–Empty the
pump and
containers.
Tab. 5 Measures depending on the behavior
of the pumped liquid
6.4 Restoring the pump to service
Complete all steps as for commissioning
(→6.2 Commissioning, Page 17).
6.5 Operating the stand-by pump
Stand-by pump filled and bled
Operate the stand-by pump at least once a week.
1. Fully open the suction-side fitting.
2. Open pressure-side fitting far enough so that the stand-by
pump operating temperature is achieved and heating is
even (→6.2.1 Switching on, Page 17).
18 U / UP / UP-DO 11334/0923

Maintenance
7 Maintenance
Opening the pump casing invalidates the warranty.
When used for the intended purpose the bearings and seals are
virtually free of wear and will not require replacement during the
warranty period.
Maintenance and repair work should be undertaken in consul-
tation with Schmitt. The chapter describes maintenance not
within the warranty period.
For pumps in potentially explosive atmospheres (→ATEX
additional manual).
Maintenance during the warranty period will be performed
by Schmitt. Submit evidence of conveyed medium on
request (DIN safety data sheet or confirmation of decon-
tamination).
7.1 Inspections
The inspection intervals depend on the operational strain
on the pump.
1. Check at appropriate intervals:
– Adherence to the minimum flow rate
– Normal operating conditions unchanged
2. For trouble-free operation, always ensure the following:
– No dry running
–Noleaks
– No cavitation
– Shut-off valve open on the suction side
– Free and clean filters
– Sufficient pump inlet pressure
– No unusual running noises or vibrations
7.2 Servicing
Mechanical seals are subject to natural wear and tear
which is heavily dependent on the respective operating
conditions. It is therefore not possible to make general
statements about the operating life.
7.2.1 Maintenance in accordance with main-
tenance schedule
Perform maintenance work in accordance with the mainte-
nance schedule(→9.3 Maintenance schedule, Page 32).
7.2.2 Maintaining the mechanical seal and shaft sleeve
Follow the drawings for maintenance (→9.1.2 Drawings,
Page 28).
To maintain the mechanical seal and shaft sleeve, the pump is
dismounted and mounted again following maintenance.
To maintain the shaft sleeve, the mechanical seal is dis-
mounted.
Dismount the pump
Tools, aids:
– Circlip pliers
1. Remove the hexagon screws, washers and nuts (04).
2. Remove the housing (03).
3. Remove the lock nut and washer (05).
4. Useawrenchtorestraintheshaftsleeve(09)atthebot-
tom flange opening, and use circlip pliers to unscrew the
impeller (06). Note the right-hand thread.
Dismounting and maintaining the mechanical seal
Observe the manufacturer’s specifications for the mechan-
ical seal
Pump dismounted
1. For series U, UP proceed as follows:
– Remove the sealing ring, thrust washer, rotating seal
and compression spring from the shaft sleeve (09).
– Remove the cover (10).
– Press the bearing ring and counter ring out of the cover
(10).
2. For series UP-DO proceed as follows:
– Unscrew the insert (19).
– Pull off the sealing liquid container (20) incl. stationary
seal.
– Pull off the front mechanical seal (07).
– Loosen the circlip (21).
– Pull off rear mechanical seal (07) with spacer ring.
– Pull off the insert (19).
3. Check all parts of the mechanical seal (07) for damage. In
case of damage, dispose of the entire mechanical seal and
fit a new part.
4. Proceed as follows as necessary:
– Maintain the shaft sleeve (→Dismounting and main-
taining the shaft sleeve, Page 20).
–OR–
– Mount the mechanical seal and pump (→Mounting
the mechanical seal and pump, Page 20).
11334/0923 U / UP / UP-DO 19

Maintenance
Dismounting and maintaining the shaft sleeve
Observe the manufacturer’s specifications for the motor
Mechanical seal dismounted
Tools, aids:
–Vise
– Shaft puller
–Dialgage
– Drill
1. Remove the grooved taper pin (13) from the motor shaft
and motor sleeve (09) and dispose of it.
2. Prepare the motor (15) for shaft sleeve disassembly as fol-
lows:
– Remove the fan cover.
– Remove the fan propeller.
– Fix the motor with exposed shaft end on the fan side in
avise.
3. Remove the shaft sleeve (09) from the motor shaft using a
shaft puller.
4. Clean the shaft sleeve (09) if necessary.
5. Check the shaft sleeve (09). If the check results in the
following, dispose of the shaft sleeve and fit a new part:
– Shaft sleeve is damaged due to mechanical and chem-
ical influences
– Run-out precision at the shaft end > 0.02 mm
6. Press the shaft sleeve (09) onto the end of the motor shaft,
setting the correct installation dimension B(→9.2.3 Shaft
sleeve installation dimensions, Page 30).
7. In case of a new shaft sleeve (09), drill a hole through
the shaft sleeve and the motor shaft at the installation
location A. Note the dimensions of the groove tapered pin
(→9.2.3 Shaft sleeve installation dimensions, Page 30).
8. Insert the new grooved tapered pin (13) flush into the hole.
9. Check the shaft sleeve (09) for run-out. Ensure a run-out
precision at the shaft end of ≤0.02 mm.
10. Mount the motor (15) as follows:
– Remove the motor from the vise.
– Mount the fan propeller.
– Mount the fan cover.
Mounting the mechanical seal and pump
Observe the manufacturer’s specifications for the mechan-
ical seal
Mechanical seal dismounted and checked
Shaft sleeve maintained if necessary
NOTE
Damage to mechanical seal!
Do not get the mechanical seal dirty, especially the sealing
surfaces of the slip rings.
Assemble the ceramic parts carefully; do not strike them or
knock them.
1. For series U, UP mount the mechanical seal as follows:
– Assemble the stationary seal and O-ring into a single
unit.
– Press the unit into the cover (10).
– Mount the cover (10) on the flange (11).
– Insert the sealing ring with the thrust washer in the
rotating seal.
– Slide the rotating seal with compression spring onto the
shaft sleeve (09) until the rotating seal is in contact with
the counter ring.
2. For series UP-DO, mount the mechanical seals as follows:
– Push the insert (19) on to the shaft sleeve (09).
– Push the rear mechanical seal (07) with spacer ring on
to the shaft sleeve (09).
– Install the circlip (21).
– Push the front mechanical seal (07) on to the shaft
sleeve (09).
– Push the sealing liquid container (20) incl. stationary
seal on to the shaft sleeve (09).
– Screw the insert (19) on.
3. Screw the impeller (06) onto the shaft sleeve (09). Note
the right-hand thread.
4. Screw on the washer and lock nut (05).
5. Check the housing seal (08) for damage. In case of dam-
age, dispose of the housing seal and fit a new part.
6. Mount the housing (03).
7. Fit the hexagon screws, washers and nuts (04) and tighten
them crosswise (→9.2.5 Tightening torques of casing
screws, Page 31).
8. Turn the shaft sleeve (09) and check whether it runs easily
and smoothly.
7.2.3 Cleaning the pump
NOTE
High water pressure or spray water can cause material
damage!
Do not direct water jets or steam jets into the opening of
the flange.
Regularly clean the pump to remove heavy dirt.
20 U / UP / UP-DO 11334/0923