INOXPA PROLAC HCP SP Series Manual

SELF-PRIMING CENTRIFUGAL PUMP
PROLAC HCP SP
Original Instructions
01.031.30.03EN
(A) 2022/01
INSTALLATION, SERVICE AND MAINTENANCE INSTRUCTIONS
01.031.32.0001

E C D e c l a r a t i o n o f C o n f o r m i t y
Model:
INOXPA S.A.U.
Telers, 60
17820 - Banyoles (Spain)
hereby declare under our sole responsibility that the
Type:
PROLAC HCP SP
PROLAC HCP SP 50-150
PROLAC HCP SP 50-190
PROLAC HCP SP 65-215
Technical O󰀩ce Manager
25th October 2021
01.031.30.04EN
(A) 2021/10
Document:
Revision:
Machine: SELF-PRIMING CENTRIFUGAL PUMP
David Reyero Brunet
Serial number: IXXXXXXXXX to IXXXXXXXXX
fullls all the relevant provisions of the following directive:
Machinery Directive 2006/42/EC
Regulation (EC) nº 1935/2004
Regulation (EC) nº 2023/2006
and with the following harmonized standards and/or regulations:
EN ISO 12100:2010
EN 809:1998+A1:2009/AC:2010
EN 60204-1:2018
The technical le has been prepared by the signer of this document.
XXXXXXXXXIINXXX to XXXXXXXXXIINXXX

D e c l a r a t i o n o f C o n f o r m i t y
Model:
INOXPA S.A.U.
Telers, 60
17820 - Banyoles (Spain)
hereby declare under our sole responsibility that the
PROLAC HCP SP
01.031.30.05EN
(0) 2021/10
Document:
Revision:
Machine: SELF-PRIMING CENTRIFUGAL PUMP
Technical O󰀩ce Manager
25th October 2021
David Reyero Brunet
Type: PROLAC HCP SP 50-150
PROLAC HCP SP 50-190
PROLAC HCP SP 65-215
fulls all the relevant provisions of these regulations:
Supply of Machinery (Safety) Regulations 2008
and with the following designated standards:
EN ISO 12100:2010
EN 809:1998+A1:2009/AC:2010
EN 60204-1:2018
The technical le has been prepared by the signer of this document.
Serial number: IXXXXXXXXX to IXXXXXXXXX
XXXXXXXXXIINXXX to XXXXXXXXXIINXXX

1. Table of Contents
1. Table of Contents
2. Generalities
2.1. Instructions manual.................................................................................................................................4
2.2. Compliance with the instructions ............................................................................................................4
2.3. Warranty..................................................................................................................................................4
3. Safety
3.1. Warning symbols..................................................................................................................................... 5
3.2. General safety instructions .....................................................................................................................5
4. General Information
4.1. Description ..............................................................................................................................................7
4.2. Operation principle..................................................................................................................................7
4.3.Application...............................................................................................................................................7
5. Installation
5.1. Reception of the pump............................................................................................................................8
5.2. Identication of the pump........................................................................................................................8
5.3.Transport and storage.............................................................................................................................9
5.4. Location ..................................................................................................................................................9
5.5.Adjustable legs......................................................................................................................................10
5.6. Pipes .....................................................................................................................................................10
5.7. Pressurisation tank ...............................................................................................................................10
5.8. Electrical installation ............................................................................................................................. 11
6. Start-up
6.1. Checks before starting the pump ..........................................................................................................12
6.2. Checks when starting the pump............................................................................................................ 13
7. Troubleshooting
8. Maintenance
8.1. General considerations .........................................................................................................................15
8.2. Check the mechanical seal ...................................................................................................................15
8.3. Maintenance of the seals ......................................................................................................................15
8.4.Tightening torque ..................................................................................................................................15
8.5. Storage .................................................................................................................................................15
8.6. Cleaning................................................................................................................................................16
8.7. Disassembly and assembly of the pump ..............................................................................................17
9. Technical Specications
9.1. Noise level ............................................................................................................................................22
9.2. Dimensions and weights .......................................................................................................................23
9.3.Technical section and parts list .............................................................................................................24
9.4. Double mechanical seal........................................................................................................................26

2. Generalities
2.1. INSTRUCTIONS MANUAL
This manual contains information about the reception, installation, operation, assembly and mainte-
nance of the PROLAC HCP SP pumps.
Carefully read the instruction before starting the pump, familiarize yourself with the installation,
operation and correct use of the pump and strictly follow the instructions. These instructions should
be kept in a safe location near the installation area.
The information published in the instruction manual is based on updated data.
INOXPA reserves the right to modify this instruction manual without prior notice.
2.2. COMPLIANCE WITH THE INSTRUCTIONS
Not following the instructions may impose a risk for the operators, the environment and the machine,
and may cause the loss of the right to claim damages.
This non-compliance may cause the following risks:
- failure of important machine/plant functions,
- failure of specic maintenance and repair procedures,
- possible electrical, mechanical and chemical hazards,
- the risk to the environment due to the type of substances released.
2.3. WARRANTY
The conditions of the warranty are specied in the General Sales Condition that have been delivered
at the time of placing your order.
The machine may not undergo any modication without prior approval from the
manufacturer.
For your safety, only use original spare parts and accessories. The usage of other parts
will relieve the manufacturer of any liability.
Changing the service conditions can only be carried out with prior written authorization
from INOXPA.
Please do not hesitate to contact us in case of doubts or if further explanations are required regarding
specic data (adjustments, assembly, disassembly, etc.).
The non-compliance of the prescribed indications in this manual means misuse of this gear on
the technical side and the personal safety and this, exempt INOXPA of all responsibility in case
of accidents and personal injuries and/or property damage. Also, excluded from the warranty all
breakdowns caused by improper use of the gear.
Generalities
5
INOXPA S.A.U. 01.031.30.03EN · (A) 2022/01

3.1. WARNING SYMBOLS
3. Safety
Safety hazard for people in general and/or for the equipment
ATTENTION Important instruction to prevent damage to the equipment and/or its function
3.2. GENERAL SAFETY INSTRUCTIONS
Read the instruction manual carefully before installing and starting the pump. Contact
INOXPA in case of doubt.
3.2.1. During installation
Always take into account the Technical Specications of chapter 9.
Never start the pump before connecting it to the lines.
Do not operate the pump if the pump casing is not tted.
Check for proper specications of the motors, especially if working conditions create an
explosions hazard.
3.2.2. During operation
The Technical Specications of chapter 9 should always be observed.
Under no circumstances can the specied limit values be exceeded.
NEVER touch the pump or the pipework during operation if the pump is being used for
transferring hot liquids or during cleaning.
The pump contains moving parts. Never place your ngers inside the pump during ope-
ration.
NEVER operate with the suction and discharge valves closed.
NEVER spray water directly on the electrical motor. The standard motor protection is
IP55: protection against dust and water spray.
Electric hazard
During the installation, all the electric work should be carried out by authorized personnel.
Safety
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6

3.2.3. During maintenance
The Technical Specications of chapter 9 shall always be observed.
NEVER disassemble the pump until the pipes have been emptied. Remember that liquid
will remain inside the pump’s pump casing (if does not have a purge). Bear in mind that
the pumped liquid may be hazardous or extremely hot. Consult the regulations in e󰀨ect
in each country for these cases.
Do not leave loose parts on the oor.
ALWAYS disconnect the electrical power to the pumps prior to carrying out any mainte-
nance.
Remove the fuses and disconnect the cable from the motor’s terminals.
All electrical work must be carried out by authorized personnel.
Safety
7
INOXPA S.A.U. 01.031.30.03EN · (A) 2022/01

4. General Information
4.1. DESCRIPTION
4.2. OPERATION PRINCIPLE
The PROLAC HCP SP pump is a closed-coupled centrifugal pump with a hygienic and horizontal
design, the single-stage, circular pump casing with axial suction and a tangential discharge.
The main pump components are pump casing, impeller, lantern cover and a shaft which is rigidly
coupled to the motor shaft.
The pump casing includes a separator tank and a non-return valve.
The motor is the standard IEC 60034 motor of type IM B35 is protected by a stainless steel shroud
and provided with height adjustable stainless steels legs.
The PROLAC HCP SP pump is a self-priming pump that eliminates the need for a vacuum pump or
other devices such as foot valves or additional pipes.
The pump needs to be primed with liquid only once before starting up. When the pump is turned
on, it sucks the air or gas present in the suction pipe, mixing it with the liquid in the pump body.
The centrifugal forces push the mixture of liquid and gas towards the separator tank where it loses
speed. Because of gravity, the liquid remains at the bottom of the separator tank and is driven back
to the pump body through the return pipe, while the air or gas is released through the discharge
pipe. In this way, the air or gas is continuously being removed from the suction pipe until the liquid
reaches the pump body and the pump begins to operate as a normal centrifugal pump.
It is very important the sucked air is released through the discharge pipe without any backpressure.
It is not advisable to reduce the hydraulic performance of the pump by resizing the impeller or
lowering the speed using a frequency converter since it will have negative repercussions on the
pump’s suction capacity.
The range of applications for each type of pump is limited. The pump was selected for a
given set of pumping conditions when the order was placed. Misuse of the pump or its
use beyond the operating limits may be dangerous or cause permanent damage to the
equipment. INOXPA shall not be liable for any damage resulting from the incompleteness
of the information provided by the purchaser (nature of the uid, rpm, etc.).
ATTENTION
4.3. APPLICATION
Due to the choice of materials and its design, the PROLAC HCP SP pump is suitable for applications
requiring a high level of hygiene, gentle handling of the product and resistance to chemical attack.
The PROLAC HCP SP pump is particularly suitable for pumping liquids containing air or gas without
losing its pumping capacity. It can be used in the food-processing, pharmaceutical and chemical
industries. Its main application is the return of the CIP cleaning system.
For each type of pump, the hydraulic performance is given by the choice of impeller diameters and
speeds. The characteristic curves also show the power and NPSH requirements. The intended
use of the pump is dened by its characteristic curve and operating limits provided in chapter 9.
Technical Specications.
General Information
INOXPA S.A.U. 01.031.30.03EN · (A) 2022/01
8

5.1. RECEPTION OF THE PUMP
5. Installation
The pump package includes the following documents:
- shipping documents,
- installation, service and maintenance instructions manual,
- instructions and service manual of the motor1
1) if the pump has been supplied with a motor from INOXPA
INOXPA cannot be held responsible for the damage sustained by the equipment during
transport or unpacking. Please visually check that the packaging is not damaged.
Unpack the pump and check the following:
- the suction and discharge connections of the pump, removing any rest of packaging materials,
- the pump and the motor are not damaged,
If the equipment is not in good condition and/or any part is missing, the carrier should report
accordingly as soon as possible.
5.2. IDENTIFICATION OF THE PUMP
Each pump has a nameplate with the basic data required to identify the model.
01.031.32.0002
C. TELERS, 60 - 17820 BANYOLES
GIRONA (SPAIN) . www.inoxpa.com
INOXPA S.A.U.
Type
Year
No
R
Serial number
01.214.32.0014
Installation
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INOXPA S.A.U. 01.031.30.03EN · (A) 2022/01

5.3. TRANSPORT AND STORAGE
The PROLAC HCP SP pumps are often too heavy to be stored manually.
Use an appropriate means of transport.
Use the points which are indicated in the drawing for lifting the pump.
Only authorized personnel should transport the pump.
Do not work or walk under heavy loads.
Lift the pump as indicated below:
- always use two support points placed as far apart as possible.
ATTENTION
- secure the supports so that they will not move.
See chapter 9. Technical Specications to consult the dimensions and weight of the pump.
During the transport, disassembly or assembly of the pump, there is a risk of loss of
stability and that the pump could down and cause damages to the operators. Make sure
that the pump is properly supported.
ATTENTION
01.031.32.0003
Always remove the motor shroud before hoisting
ATTENTION
5.4. LOCATION
Place the pump as close as possible to the suction tank whenever possible below the liquid and
leaving enough space around to can access the pump and the motor. If necessary, consult in
chapter 9. Technical Specications the dimensions of the pump.
Once a place is chosen, the pump should be mounted on a at and level surface.
Install the pump so as to allow proper ventilation.
If the pump is installed outdoors, it should be covered by a roof. Its location should allow
easy access for inspection or maintenance operations.
ATTENTION
Installation
INOXPA S.A.U. 01.031.30.03EN · (A) 2022/01
10

Over 68ºC the operator should take protective measures and place warning notices
advising of the danger which exists if the pump is touched.
The type of protection selected should not isolate the pump entirely. It should allow for
the bearings to be cooled more e󰀩ciently and for the bearings to be lubricated.
5.5. ADJUSTABLE LEGS
About the installation pipes:
- As a general rule, install the suction and discharge lines in straight sections, with the minimum
possible number of elbows and ttings to reduce any pressure losses that may be caused by
friction.
- Make sure that the pump’s ports are properly aligned with the pipework and have a diameter
similar to that of the pump connections.
- Install support brackets for the lines as close as possible to the pump’s suction and discharge
ports to avoid vibrations and stress on the pump.
5.5.1. Shut-o󰀨 valves
The pump may be isolated for maintenance. To accomplish this, shut-o󰀨 valves must be installed
and connected to the pump’s suction and discharge connections.
5.4.1. Excessive temperatures
Depending on the uid to be pumped, high temperatures can be reached inside and around the
pump.
5.6. PIPES
To keep the adjustable legs thread clean these are the permissible L values:
Motor size Adjustable
leg
L mín
(mm)
L màx.
(mm)
71 M12 8 23
80/90 M12 8 23
100/112 M16 10 30
132 M16 10 30
160/180 M20 13 40
200/225 M20 13 40
01.030.32.0008
5.7. PRESSURISATION TANK
For a models with a double mechanical seal, a pressurisation tank needs to be tted.
ALWAYS install the pressurization tank at a height of between 1 and 2 meters with
respect to the pump shaft.
ALWAYS connect the coolant inlet to the bottom connection on the seal chamber. The
coolant will then exit through the top connection on the chamber. See the following
gure.
Installation
11
INOXPA S.A.U. 01.031.30.03EN · (A) 2022/01

For more information on the pressurization tank (installation, performance, maintenance, etc.), refer
to the instruction manual supplied by the manufacturer.
01.030.32.0009
Mechanical seal
5.8. ELECTRICAL INSTALLATION
Only qualied personnel can connect the electric motors.
Take the necessary measures to prevent damage to cables and connections.
Electrical equipment, terminals and components of the control systems may still carry
current when they are disconnected. Contacting them may impose a hazard to operators
or cause irreparable material damage.
Before handling the pump, make sure that the motor is stopped.
To do the electrical installation:
- connect the motor in accordance with the instructions supplied by the motor manufacturer, in
accordance with the current national legislation and in compliance with EN 60204-1,
01.031.32.0004
- check the direction of rotation (see the signalling label on the pump),
- start and stop the pump motor momentarily. Make sure that the direction of rotation is correct.
If the pump rotates in the wrong direction it could cause serious damage.
See indicator label on the pump.
ALWAYS check the direction of rotation of the motor with liquid inside the pump.
ATTENTION
Installation
INOXPA S.A.U. 01.031.30.03EN · (A) 2022/01
12

Before starting the pump:
- completely open the shut-o󰀨 valves on the suction and discharge lines,
6. Start-up
6.1. CHECKS BEFORE STARTING THE PUMP
Before starting the pump, carefully read the instructions in section 5. Installation.
Carefully read section 9. Technical Specications. INOXPA will not be liable for impro-
per use of the equipment.
NEVER touch the pump or the lines of hot liquids are being pumped.
- check that the power supply matches the rating indicated on the motor plate,
- check that the motor rotation direction is correct.
The pump must never turn dry.
ATTENTION
01.031.32.0005
- do an initial lling of liquid since this pump requires it. This can be done through the ll hole
located at the top of the separator tank.
Pump Priming volume (l)
PROLAC HCP SP 50-150 3,5
PROLAC HCP SP 50-190 3,8
PROLAC HCP SP 65-215 7,0
The pump must not be allowed to operate more than 10 minutes without pumping as it
heats up and the priming liquid is lost due to evaporation.
ATTENTION
Start-up
13
INOXPA S.A.U. 01.031.30.03EN · (A) 2022/01

6.2. CHECKS WHEN STARTING THE PUMP
When starting the pump check:
- that the pump is not making any strange noises,
- if the absolute inlet pressure is su󰀩cient to prevent cavitation in the pump. See the curve to
determine the minimum pressure required above steam pressure (NPSHr).
- the discharge pressure,
- that there are no leaks in the sealing areas.
Shut-o󰀨 valves on the suction pipe must not be used to regulate the ow. All shut-o󰀨
valves must be fully open during operation.
ATTENTION
Control the motor consumption to prevent an electrical overload.
To reduce the ow rate and the electrical power consumed by the motor:
- reduce regulating the pump’s discharge ow,
- decrease the motor speed.
ATTENTION
Use special protection when the sound pressure in the operation area exceeds 85
dB(A).
01.031.32.0006
Start-up
INOXPA S.A.U. 01.031.30.03EN · (A) 2022/01
14

7. Troubleshooting
Motor overload
The pump does not provide enough ow or pressure
No pressure on the discharge side
Uneven delivery ow / pressure
The pump does not suck
Noise and vibrations
The pump gets clogged
Overheated pump
Excessive wear
The mechanial seal leaks
PROBABLE CAUSES SOLUTIONS
• • • Wrong direction of rotation - Reverse the direction of rotation
• • • • • NPSH is not high enough
- Place the suction tank higher
- Place the pump lower
- Reduce the vapour pressure
- Increase the diameter of the suction pipe
- Shorten and simplify the suction pipe
• • Pump not drained - Drain or ll the separator tank
• • • • Cavitation - Increase the suction pressure
• • • • • Air is sucked in by the pump - Check the suction pipe and all its
connections
• • • • Clogged suction tube - Check the suction pipe and the lters if
available
• • • Discharge pressure too high
- Fully open the valves in the discharge
pipe
- If necessary, reduce load losses, e.g. by
increasing the diameter of the pipe
• • • Flow too high
- Reduce the ow by means of a diaphragm
- Partially shut o󰀨 the delivery valve
- Reduce speed
• • • • • • • Fluid viscosity too high - Decrease the viscosity by injecting liquid
or increasing the diameter of the piping
• • • • • Fluid temperature too high - Reduce the temperature by cooling the
uid
• • Mechanical seal damaged or worn - Replace the seal
•O-rings unsuitable for the uid - Fit suitable O-rings after checking with
the supplier
• • • • The impeller scrapes
- Reduce temperature
- Reduce suction pressure
- Adjust the impeller/cover play
• • • • Tension in the lines - Connect the pipes to the pump without
tension
• • • • Foreign matter in the liquid - Install a lter in the suction pipe
• Mechanical seal spring tension is too low - Check the correct position of the shaft
and impeller
The following table provides solutions to problems that might arise during the operation of the pump.
The pump is assumed to have been properly installed and be suitable for the relevant application.
Please contact INOXPA if technical assistance is required.
Troubleshooting
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8. Maintenance
8.1. GENERAL CONSIDERATIONS
8.2. CHECK THE MECHANICAL SEAL
8.3. MAINTENANCE OF THE SEALS
SEALS REPLACEMENT
Preventive maintenance Replace after twelve (12) months. We also recommend re-
placing the gaskets during seal or pump shaft replacement.
Maintenance after a leak Replace at the end of the process.
Scheduled maintenance
Regularly check that there are no leaks and that the pump is
operating correctly.
Keep a maintenance record of the pump.
Use statistics to plan inspections.
Lubrication
During assembly, use soapy water or oil compatible for the
food industry when tting the di󰀨erent gaskets to allow them
to slide better.
This pump, just like any other machine, requires maintenance. The instructions contained in this
manual cover the identication and replacement of spare parts. The instructions are aimed at
maintenance personnel and those responsible for the supply of spare parts.
Carefully read chapter 9. Technical Specications.
Maintenance work can only be carried out by qualied personnel that are trained and
equipped with the necessary resources to carry out this work.
All parts or materials that are replaced must be properly disposed of/recycled in
accordance with the current directives applicable in each area.
ALWAYS disconnect the pump before beginning any maintenance work.
Periodically check that there are no leaks around the shaft. If leakage is detected through the
mechanical seal, replace it following the instructions in chapter 8.7. Disassembly and assembly of
the pump.
The period between each preventive maintenance service will vary depending on the operating
condition of the pump: temperatures, ow, number of operating hours, cleaning solutions used, etc.
8.4. TIGHTENING TORQUE
Size Nm lbf·ft
M6 10 7
M8 21 16
M10 42 31
M12 74 55
M16 112 83
8.5. STORAGE
Before being stored the pump must be completely emptied of liquids. Avoid, as far as possible, the
exposure of the parts to excessively damp atmospheres.
Maintenance
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8.6. CLEANING
The use of aggressive cleaning products such as caustic soda and nitric acid may give
to skin burns.
Use rubber gloves during cleaning procedures.
Always use protective goggles.
8.6.1. Automatic CIP (clean-in-place)
If the pump is installed in a system with a CIP process, it is not necessary to disassemble the pump.
If the automatic cleaning process is not provided, proceed to disassemble the pump as indicated in
the chapter 8.7. Disassembly and assembly of the pump.
ATTENTION
Check the concentration of the cleaning solutions. Incorrect concentrations may lead to
the deterioration of the pump seals.
To remove any traces of cleaning products ALWAYS perform a nal rinse with clean water at the end
of the cleaning process.
Two types of solutions can be used for CIP processes:
a. alkaline solution: 1% by weight of caustic soda (NaOH) a 70ºC (150ºF). To make this solution:
1 kg NaOH + 100 l H2O1= cleaning solution
2,2 l NaOH 33% + 100 l H2O = cleaning solution
b. acid solution: 0,5% by weight of nitric acid (HNO3) a 70ºC (150ºF). To make this solution:
0,7 l HNO353% + 100 l H2O = cleaning solution
1) only use chlorine-free water to mix with the cleaning agents
8.6.2. SIP (sterilization-in-place) cleaning
Sterilization with steams is applied to all equipment including the pump.
ATTENTION
Do NOT use the equipment during the steam sterilization process.
The parts and materials su󰀨er no damage if the indications specied in this manual are
observed.
No cold liquid can enter the pump till the temperature of the pump is lower than 60ºC
(140ºF).
The pump generates an important pressure drop through the sterilization process. Use
a by-pass circuit provided with a discharge valve is recommended for ensuring that the
steam or overheated water sterilizes the circuit integrity.
Maximum conditions during SIP process with steam or overheated water:
a. maximum temperature: 140ºC / 284ºF
b. maximum time: 30 min
c. cooling : sterile air or inert gas
d. materials: EPDM (recommended)
FPM (use with caution)
Maintenance
17
INOXPA S.A.U. 01.031.30.03EN · (A) 2022/01

Disassembly:
8.7. DISASSEMBLY AND ASSEMBLY OF THE PUMP
The assembly and disassembly of the pumps should be done by qualied personnel. Make sure that
the personnel read carefully this instruction manual and, in particular, those instructions which refer
to the work they will perform.
ATTENTION
Incorrect assembly or disassembly may cause damage to the pump’s operation and lead
to high repair costs and a long period of downtime.
INOXPA is not responsible for accidents or damages caused by a failure to comply with
the instructions in this manual.
Preparation
Provide for a clean working environment so some parts, including the mechanical seal, require very
careful handling and others have close tolerances.
Check that the parts which are used are not damaged during transport. When doing this, you need
to inspect the adjustment edge, the butted faces, the tight t, burrs, etc.
After each disassembly, carefully clean the parts and check for any damage. Replace all damaged
parts.
Tools
Use the proper tools for assembly and disassembly operations. Use them correctly.
Cleaning
Before disassembling the pump, clean it outside and inside.
8.7.1. Self-priming unit
1. Remove the retaining clamps (85B,92E)
from the discharge cone and from the return
pipe.
2. Remove the separator tank (01A).
3. Remove the clamp seals (85A,92F) from
the discharge cone and the return pipe.
Check their condition and replace them if
damaged.
4. Remove the clamp (92) from the non-return
valve of the suction port.
5. Separate the non-return valve body (01B)
and remove the seal (92A) from the pump
casing (01).
6. Remove the guide bushing (17E), the
spring (75), the shaft (05A) and the shaft
seal (80E) from the non-return valve.
7. Separate the non-return valve components:
the guide bushing (17E), the spring (75)
and the shaft (05A).
8. Remove the O-ring (80E) from its seat of
the shaft (05A) of the non-return valve.
9. Remove the clamp (87B) from the purge,
the blind plug (87) and the seal (87A).
01.031.32.0007
01A
92F
92E
85B
85A
Maintenance
INOXPA S.A.U. 01.031.30.03EN · (A) 2022/01
18

Assembly:
1. Place the seal (87A) and the blind plug (87)
on the purge and tighten the clamp (87B).
2. Place the seal (80E) in its seat of the shaft
(05A) of the non-return valve. Lubricate the
seal with soapy water to facilitate its slide.
3. Fit the spring (75) on the shaft (05A). Join
the guide bushing (17E) to the shaft/spring
assembly (75,05A).
4. Mount the spring, shaft and guide bushing
assembly (75,05A,17E) in the non-return
valve body (01B).
5. Place the clamp seal (92A) in the seat of
the pump casing (01).
6. Place the whole assembly on the cover of
the suction port of the pump casing (01)
and tighten the clamp (92).
7. Place the clamp seals (85A,92F) on the
discharge cone and the return pipe.
8. Place the separator tank (01A) on the seals
(85A,92F).
9. Fit and tighten the two retaining clamps
(85B,92E).
87
87B
87A
01
92A 17E 75 05A
01B
80E
92
01.031.32.0008
8.7.2. Pump and single mechanical seal
Disassembly:
1. Remove the retaining clamp (15) and
disassemble the pump casing (01).
2. Check the condition of the O-ring (80) from
the pump body and replace it if damaged.
3. Remove the screws (50) and the lantern
protections (47).
4. Place an open-end wrench on the at sides
of the shaft to immobilize the shaft.
5. Remove the impeller nut (45) and the O-ring
(80A).
6. Disassemble the impeller (02). If necessary,
hit it with a plastic mallet to disengage the
cone.
7. Remove the rotating part of the seal (08)
from the rear side of the impeller (02).
8. Remove manually the stationary part of the
seal (08) which is housed in the pump cover
(03).
9. If the thrust washer and the seal spring need
to be replaced, loosen the allen screws
(51A) that secure the pump cover (03) and
take it o󰀨. Then, loosen the allen screws
(51) and remove the seal cover (09).
10. Check the spring and the thrust washer
on the mechanical seal (08) and replace if
necessary.
80
01
15
01.031.32.0009
50
47
50
50
50
47
08 02
80A 45
01.031.32.0010
03
08
09
51
01.031.32.0011
Maintenance
19
INOXPA S.A.U. 01.031.30.03EN · (A) 2022/01

Assembly:
1. Place the thrust washer of the mechanical
seal (08) on the pump cover (03). Make
sure that the four tabs centring the spring
are facing outward.
2. Fit the spring on the thrust washer within
the centring tabs. Place the seal cover (09)
on the assembly and move it until the seal
washer thrust tabs match the slots on the
cover (09). Secure it with the allen screws
(51).
3. Mount the pump cover (03) on the lantern
(04) and secure it with the screws (51A).
4. Fit manually the stationary part of the seal
(08) on the pump cover (03). Make sure
that the anti-rotation tabs match the slots
on the seal.
5. Fit the rotating part of the mechanical seal
(08) on the rear side of the impeller (02) and
make sure that it is level.
6. Place the O-ring (80A) in the slot of the
impeller nut (45).
7. Place an open-end wrench on the at sides
of the shaft to immobilize the shaft (05).
8. Fit the impeller (02) on the pump shaft (05)
and secure it with the impeller nut (45).
01.031.32.001201.030.32.0016
ATTENTION
When installing the new seal, lubricate the pieces and seals with soapy water to allow
them to slide better. Apply it to the stationary parts on the cover as well as the rotating
parts on the impeller and the double seal ring.
8.7.3. Double mechanical seal
Disassembly:
1. Remove the main seal following the instructions of the chapter 8.7.2. Pump and single mechanical
seal up to point 8.
2. Loosen the allen screws (51A) and remove the pump cover (03) taking care not to damage the
stationary part of the secondary seal housed therein.
3. Loosen the allen screws (51B) and remove the double seal cover (10) together with the stationary
part of the secondary seal of the pump cover (03). Remove the spring and thrust washers.
4. Remove manually the stationary part of the secondary seal (08) which is housed in the double
seal cover (10) as well as the O-ring (80C).
5. Loosen the set screw (55) and remove the double seal ring (30) on the shaft (05) together with
the rotating part of the secondary seal.
6. Remove the rotating part of the secondary seal and the O-ring (80D) from the double seal ring.
1. Install the rotating part of the new secondary seal and the O-ring (80) on the double seal ring (30).
Slide the assembly over the pump shaft (05).
2. Manually, t the stationary part of the secondary seal (08) and the O-ring (80C) on the double
seal cover (10).
3. Place the thrust washer of the primary seal (08) on the pump cover (03). Make sure that the four
tabs centring the spring are facing outward.
4. Fit the spring on the thrust washer within the centring tabs. Place the thrust washer of the
secondary seal on the spring. Make sure that the four tabs centring the spring are pointing inward.
Assembly:
Maintenance
INOXPA S.A.U. 01.031.30.03EN · (A) 2022/01
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