1. No category

INSTRUCTION AND MAINTENANCE MANUAL
3 SCREW PUMP
PZ
MUM – PZ – ENG – 12 – 12 - 5
1
GENERAL INDEX
1 General index............................................................................................................................. 2
2 Preamble ................................................................................................................................... 3
3 Machine description ................................................................................................................... 4
4 Technical characteristic..............................................................................................................5
5 Identification .............................................................................................................................. 6 6 Safety ........................................................................................................................................ 7 3 Handling and shipping ............................................................................................................... 8 4 Installation ................................................................................................................................. 9 5 Pressure relief valve adjustment .............................................................................................. 10 7 Maintenance ............................................................................................................................ 11 9.1-Versione con Tuning……………………………………………………………………………..13
10 11 12 13 14 Assembly drawing ................................................................................................................... 14 Troubleshooting ....................................................................................................................... 18 Disposal ................................................................................................................................... 19 Warranty .................................................................................................................................. 19 Declaration of incorporation ..................................................................................................... 18 MUM – PZ – ENG – 12 – 12 - 5
pag. 2 di 20
2
PREAMBLE
This manual contains instructions for machine use and maintenance. Its contents are to be used
by operators trained to take necessary precautions during the complete lifecycle of the machine.
The scope of the manual is to supply indications to use the machine safely and to perform ordinary maintenance operations. No extraordinary maintenance operations are mentioned in this
manual, as they are considered exclusive competence of a technical assistance technician. The
technician must intervene on the machine with respect to the technical characteristics of the
project for which the machine has been manufactured.
Reading this manual is indispensable. However, this manual cannot substitute the
competence of technical personnel, which must have undergone preliminary and
adequate training.
The manual must be kept intact and in good conditions during the complete lifecycle of the machine. After consulting the manual, keep it in safe and protected place.
If this documentation is lost or damaged, it is possible to obtain a copy from the manufacturer,
indicating on the order the production batch code, the machine serial number and year of manufacture.
This machine has been manufactured conforming to the directives in force in the European
community and to the regulations taken in the requirements, as stated in the Declaration of Incorporation released by the Manufacturer and enclosed in the manual.
The information in this manual cannot be released to third parties. Any duplication not authorized in writing by SEIM, partial or complete, obtained by photocopying, duplication or with other
systems, even by electronic scanning, violates the copyright conditions and legal action can be
taken.
CUSTOMER CARE
For any information please contact SEIM s.r.l.
Via Volta, 17
20090, CUSAGO (MI) – ITALY
Phone: +39.02.9039211; FAX: +39.02.90392141
e-mail: [email protected]
web: www.seim.it
MUM – PZ – ENG – 12 – 12 - 5
pag. 3 di 20
3 MACHINE DESCRIPTION
The PZ pump is a 3 screw pump for hydraulic oils, lubricating oils (special version for heavy fuel).
Destined for multiple use such as auxiliary lubrication or cooling circuits.
There are several version available for specific application (kind of fluid, viscosity, pressure, material, compatibility). Main field of application: pumps for lubrication system auxiliary cooling, with
relief valve.
The pump has cast iron body.
SEIM s.r.l. test its pumps before the delivery. Thanks to this the pumps are tested to 100%.
13
14
1
2
3
4
9
5
7
8
6
10
8
11
Fig. 1
1
Suction flange
8
Pressure port
2
Pressure gauge
9
Screws
3
Pump body (cast iron)
10
End cover
4
Motor connection flange
11
Vertical foot (opzional)
5
Key
12
Relief valve adjustable
6
Main pump screw
13
Mechanical seal drain
7
Point to fix horizontal foot (Horizontal
foot optional)
14
Mechanica seal pre-fill hole
MUM – PZ – ENG – 12 – 12 - 5
pag. 4 di 20
4 TECHNICAL CHARACTIERISTICS
Functional characteristics for standard version
Delivery flow:
up to 5400 l/min (up to 1425 USGPM)
Admissible delivery pressure *:
up to 16 bar (232 psi) from 750 to 3600 rpm
Admissible suction pressure:
from -0,5 to 10 bar (from -7.3 to 145 psi)
For different value contact SEIM
Kinematics viscosity:
from 10 to 400 (cSt STD (< 5000 cSt special)
For different value contact SEIM
Admissible temperature:
from 0 to 120 °C (da 32 a 248 °F)
For different value contact SEIM
Driving speed:
until 140°C (284 °F) special
1500 – 1800 rpm; up to 3000 – 3600 rpm up to PZ072
Average noise level:
65 ÷75 dB(A) at 1800 rpm according to pump dimension
Reccomended oil filtration:
60 micron max on suction side (not abrasive contaminant) ISO4406 19/16-NAS 10
Direction of rotation:
Clockwise, as seen from driving side
* Reduced pressure limits apply due to fluid viscosity and driving speed.
Consult the performance charts for individual pump side.
For different functional characteristics, please contact our sales department.
For pump dimension see the technical data sheet “… - STE – PZ – … - … - …”
The relief valve on the pump can be setted by the manufacturer.
The ambient operating conditions are:
- temperatura: 0 ~ 55°C
SEIM is not responsible for the system used to operate the pump.
The use of the pump for uses different from as indicated above is prohibited and is dangerous.
MUM – PZ – ENG – 12 – 12 - 5
pag. 5 di 20
5 IDENTIFICATION
All SEIM pumps are signed with the manufacturer name, the serial number, the year and the
month of production and the production batch code.
For any information, contact the manufacturer and always mention the data described above.
Never change or remove the code numbers, otherwise the warranty expires.
Manufacturer
Pump
code
Serial number
Pump
rotation
direction
Respecting the rotation sense is fundamental for pump use; an incorrect rotation sense
will jeopardize pump operation.
PZ pumps are ABS Type Approval certified.
When is required this marine certification by
the customer, this tagplate is attacked to the
pump body.
PZ pumps are also CTR certified. When is
required this certification by the customer,
this tagplate is attacked to the pump body.
MUM – PZ – ENG – 12 – 12 - 5
pag. 6 di 20
6
SAFETY
1.1 Correct use
The pump is destined to operate with hydraulic or lubricating oil, within the temperature, viscosity and pressure limits indicated cap. 4 “TECHNICAL CHARACTERISTICS”.
Using the pump in conditions or with different fluids other than those indicated, unless
expressively authorized by SEIM, can cause dangerous situations, for which SEIM
cannot be held responsible in any way whatsoever.
1.2 Individual protection device
During maintenance operations, gloves and protection glasses must be
worn.
1.3
General prescriptions
− Avoid pump station components from coming into contact with wet or humid surfaces.
− Avoid unauthorized personnel to enter the working area.
− Do not wear loose clothing or accessories, which may get entangled in moving parts
(ties, bracelets, etc.)
− Do not wear large sleeve clothing, laces, belts or bracelets or other accessories, which
may be the cause of danger. Any long hair must be gathered together in a manner to
avoid dangerous situations.
− Avoid the oil inlet-piping coming into contact with hot objects, sharp surfaces or cutting
corners. Do not overload the pump on rigid piping connections. The user must never
substitute them if they are damaged. If necessary, contact professionally qualified personnel.
− The workplace must be kept in order and well illuminated; no liquids or traces of oil must
be present.
− Avoid pressure overloads, which can be a risk and may damage the life of the pump.
− Before connecting the pump, make sure everything is completely installed.
− Only pump oils with a viscosity between 10 and 400 cSt, with a permissible continuous
outlet pressure up to 30 bars (435 psi), with an inlet pressure between -0,5 to 10 bars
(from 7,3 to 145 psi) and an operating temperature from 0 to 120°C (from 32 to 248°F).
For requests differing to the above, please contact SEIM. Using the pump for different
uses to those indicated is forbidden and can be dangerous.
− For maintenance and substitution, only use original spare parts.
− Any installations not conforming to the specifications can compromise your safety and
make the warranty void.
MUM – PZ – ENG – 12 – 12 - 5
pag. 7 di 20
7
1.4
HANDLING AND SHIPPING
General conditions
The pumps are normally supplied in boxes (Fig. ), separated by pressed cardboard on the inside (to avoid damage during transportation) and finally filled with packaging
paper. The box is closed and strapped to a pallet and can
be handled using a forklift truck (Fig. ).
An adhesive label is attached to the box describing its
contents.
The dimensions of the packaging depend on the type
of pump ordered.
1.5
Fig. 2
Safety requirements
− The personnel charged to handle the load must use
protective gloves and must be trained to use lifting devices.
− If the packaging remains outdoors during the shipping
or storage operations, cover it with a tarpaulin cover
(see for example Fig. ).
− All optional features ordered with the pump are
packed separately and must be covered.
− Follow the instructions on the packaging before handling and opening it.
− Make sure that the transportation and lifting devices
are able to support the weight of the packaging containing the pumps as indicated in the documentation
provided with the supply.
− Lift the packaging only a few centimetres from the
floor to avoid swinging of the load and always position
the forks at the centre of gravity.
− Always move the load slowly during handling operations.
− Always check the point where the forks touch under
the pallet to avoid some parts being damaged; if necessary use some polystyrene or soft wood blocks to
separate the load from the forks.
− Never place one package containing pumps on the top
of another package (Errore. L'origine riferimento
non è stata trovata.): the packaging will not bear the
weight.
Fig. 3
Fig. 4
Fig. 5
MUM – PZ – ENG – 12 – 12 - 5
pag. 8 di 20
8 INSTALLATION
L’installazione delle pompe mod. PZ è estremamente semplice e non richiede
particolari accorgimenti. Munirsi di un mezzo adeguato di sollevamento.
1
Open the packaging, lift the pump and bring it to the installation point.
Raise it as little as possible from the ground. (fig.1).
Key the half-joint after having removed the protection cap and lubricated the
motor shaft with a veil of oil (fig.2).
Lock the half-joint using the grub-screw (fig.3) if available on the coupling.
Remove the protection caps from the inlet and outlet ports and fill the pump
with the fluid to be pumped (fig.4). If you cannot pre fill the pump from the
suction and pressure port, provide the piping of pre fill holes.
2
Wait a few minutes until the pump is completely filled with the fluid. Connect
the piping on the inlet and outlet ports (fig.5). Pay attention, foreign elements don’t have to fall into the ports.
Pre fill the mechanical seal area using the pre fill hole (fig.6).
3
Check the direction of rotation of the pump by starting the electric motor and
observing the direction of rotation of the motor fan or, if easier, the motor
shaft through a hole applied in the housing: the direction of rotation must
comply with the direction of the arrow placed on the nameplate.
Limit the first start-up to the time necessary to check that the direction of rotation corresponds to the direction indicated on the
pump nameplate. This prevents partial or total damage to the
pump in the case of incorrect rotation.
Start-up the motor after checking that all the valves on the line are fully open.
At this point, the pump begins to draw fluid and to deliver the flow.
4
7
Run the pump unloaded for a few minutes to facilitate the elimination of any
air present in the fluid. Then regulate the pressure to the value foreseen for
the system (fig.7 valve pilot operated, fig.8 valve direct operated).
PRESSURE
5
6
8
If the pump does not draw the fluid, stop the motor within 30
seconds and repeat the start-up operations at intervals of a few
seconds. If the problem persists, check system compliance.
Protect the pump from foreign material through an appropriate filtration system. Check the level of filtration on the recommended
technical reference.
MUM – PZ – ENG – 12 – 12 - 5
pag. 9 di 20
PRESSURE
9
PRESSURE RELIEF VALVE ADJUSTMENT
The pressure relief valve is integrated into the pump with an internal recirculation and it limit the
maximum pressure of the system in the case of emergency. Under normal working conditions the
valve is closed. On standard pump version the valve is not setted. If the valve is setted at a specific pressure, is also sealed.
On the test bench SEIM test at 100% valves and pumps.
It is possible for the customer change the setting of the valve in the range of pressures specified in
the datasheet.
Do not change the valve components.
For the valve setting see the pictures “A” and “B”.
We suggest to start the valve adjustment procedure with the valve fully open.
Summary table Δp (difference of pressure between start and complete discharge valve opening)
depending on pump model.
Δp [bar]
rpm
1500-1750
3000
3600
From PZ032 to PZ060
3
X
X
PZ072
3
X
From PZ083 to PZ156
3
* pump with larger capacity; viscosity 100 cSt
X = the valve is able to discharge fully the flow = 100%
Pilot operated
valve
Direct operated
valve
B
A
PRESSURE
PRESSURE
PRESSIONE
MUM – PZ – ENG – 12 – 12 - 5
pag. 10 di 20
10
MAINTENANCE
All maintenance interventions must be carried out when the pump is stopped and after disconnecting the motor power supply.
Make sure to handle carefully the pump and make sure that there is no risk of accidental fall of
components. SEIM declines all responsibility for damage to person or property caused by:
- interventions performed not in compliance with the indications in this manual;
- interventions performed by unauthorized personnel;
- use of non-original spare parts.
Ordinary maintenance requires the following operations, to be performed periodically:
¾ Clean the pump externally
Tightening torques
¾ Check for leaks
[Nm]
¾ Tighten the nuts and screws
In case of extraordinary maintenance you can find below the
instructions to disassembly the motor - pump.
These instructions has to be followed only by authorized personnel and can require the use of equipment not commonly
used. Use also the sectional drawing that you can find in this
catalogue. SEIM is not responsible for any damage caused by
disassembly or by incorrect reassembly of the pump.
In case of necessity or for further information please contact
SEIM s.r.l.
M6
9,5
M8
23
M10
46
M12
79
M14
127
M16
198
Disassembly of the mechanical seal
Disconnect the pipe after empty the pump.
9
Disconnect the pump from the bell-housing and extract the half coupling after
unscrewing the bolts.
Dismount the key from the main screw and unscrew the bolts of the connection from the motor connection flange and the pump body.
Dismount the motor connection flange with light blows with a plastic hammer
and the three screws (on the motor connection flange is mounted the mating
ring of the mechanical seal).
10
Remove the idler screws.
Remove the retaining circlip from the main screw with a light blows with a
plastic hammer.
Pull out the main screw and the primary ring.
Remove the mating ring of the mechanical seal from the flange (fig.9).
Remove the primary ring from the main screw rotating it in the opposite direction to the
winding direction of the spring. Pay attention at never touch the sliding surface (fig.10).
MUM – PZ – ENG – 12 – 12 - 5
pag. 11 di 20
Disassembly the pressure relief valve
After unlocking the ring nut loosen the screw of the valve (fig.11).
Unscrew the screws, pull out the valve flange from the body and check the
o-ring; replace it if damaged (fig.11).
Remove the spring and then the shutter (fig.11).
11
Disassembly of the ball bearing
In order to make this operation you have to make the instructions described
In the above paragrath “Dismounting the mechanical seal”.
Pull out the group of components, ball bearing, main screw and idler screws
observing the position of signs (X) present on the central screw and the
relative side, in order to facilitate the subsequent assembly sequence
(fig.12). Remove the circlip and using an extractor remove the ball bearing.
12
Assembly the new ball bearing
Before to assembly the pump, it is recommended to clean the components
inside well. Check all the o-rings, the gasket and the mechanical seal, if
damaged substitute them. Heating the ball bearing and place it on the main
screw, block it with the circlip. Make sure the main screw rotates freely.
Lubricate the main screw, the idler screws and assembly them in the pump body, making sure
that the marks (X) of the central screw and its lateral screws are exactly in the same position they
were in during dismantling (fig.13).
Assembly the mechanical seal
N.B.: during assembly, the lapped surfaces of the mechanical seal must not come into contact the workbench; place the primari ring and the mating ring with the seal surfaces upwards.
PRIMARY RING OF THE MECHANICAL SEAL:
Using alcohol, wash well the seat on the motor connection flange of the mechanical seal primary ring and the o-ring of the primary ring.
14
Using a pushing tool (material of the tool: NYLON / PTFE), mount the primary ring into the seal
seat using a costant force, placement should be with the sealing face perfectly parallel to the
flange (fig.14). Wet the sealing face with alcohol.
Blow with air to evaporate the alcohol.
Clean the seal face using a clean cloth (cellulose, not cotton) soaked with alcohol and let it evaporate.
MUM – PZ – ENG – 12 – 12 - 5
pag. 12 di 20
MATING RING:
Hold the main screw. Make sure that the main screw surface is completely
smooth and without sharp edges. If necessary, shine the shaft with fine abrasive cloth (grain 400-1000 ca), soave with oil and gasoil, even if it has been
grinded.
Spread a veil of grease on the main screw seat seal, mount the mating ring
on the main screw (fig.15) rotating in opposite direction to the winding of the
spring until the stop and check the correct axial sliding (Fig.16). NO GREASE
OR DIRTY MUST BE PRESENT ON THE SEALING FACE, for safety use a
cloth moistened with alcohol and let it evaporate.
15
16
CLOSING THE PUMP:
Repeat in reverse sequence the steps described in paragraph “DISASSEMBLY OF THE MECHANICAL SEAL”.
Assembly the relief valve
It is necessary to disassemble the pump end cover to disassemble the relief valve.
obturator and the spring in their seats.
Mount the
Mount the pump end cover to the pump housing and tighten, in an alternating sequence, the
screws. To make these operations easier, see the sectional drawing in the paragraph “SECTIONAL DRAWING”. After a general inspection of the pump set up on the system following the instructions described in “START UP INSTRUCTIONS”.
9.1 TUNING VERSION
4
5
3
2
1
6
For the use in environments with percentages air / oil above the limit recommended for pumps series PZ, Seim adds to the standard configuration, a device designed to "drain" the surplus of air
bubbles accumulated inside the pump.
This device, to be operated during the operation of the pump, is composed by the sectional drawing shown above. To allow the air vent remove the nut n°4, unscrew the pin n°2 until the
mechanical stop. Wait a few seconds and screw again the obturator (without forcing the closure)
and the protection cap (n°4).
MUM – PZ – ENG – 12 – 12 - 5
pag. 13 di 20
11 ASSEMBLY DRAWING
PUMP PZ 32
Mechanical seal
N° DESCRIPTION
N° DESCRIPTION
N° DESCRIPTION
1
circlip **
15 nut
29 ball
2
circlip **
16 nut
30 pin
3
circlip **
17 spacer
31 pin **
4
circlip
18 end cover
32 valve guide rod
5
circlip **
19 lip seal *
33 obturator guide rod
6
spacer **
20 gasket
34 plug
7
spacer**
21 key **
35 plug
8
spacer *
22 spring
36 plate
9
main screw ring **
23 spring
37 mechanical seal jc *
10 seal ring **
24 o-ring
38 mechanical seal un *
11 anti-rotating element
25 o-ring **
39 main screw **
Mechanical seal
12 pump body
26 o-ring *
40 idler screw **
13 plug
27 obturator
41 hexagonal socket head screw
14 ball bearing *
28 rivet
(spare part kit: *basic - **superior - __ standard)
MUM – PZ – ENG – 12 – 12 - 5
pag. 14 di 20
POMP PZ 40 – 45
35
34
22
Mechanical seal
Mechanical seal
N° DESCRIPTION
N° DESCRIPTION
1
spacer
12 spacer *
N° DESCRIPTION
25 pin
2
spacer
13 spacer **
26 valve guide rod
3
circlip **
14 motor connection flange
27 plug
4
circlip
15 end cover
28 nameplate
29 mechanical seal jc *
5
tie rod
16 key **
6
pump body
17 spring
30 mechanical seal un *
7
ball bearing *
18 o-ring
31 main screw **
8
nut
19 o-ring *
32 Idler screw **
9
nut
20 o-ring
33 hexagonal socket head screw
10 nut
21 foot (option)
34 obturator guide rod
11 spacer
22 obturator
35 anti-rotating element
10 nut
23 spacer
11 spacer
24 rivet
(spare part kit: *basic - **superior - __ standard)
MUM – PZ – ENG – 12 – 12 - 5
pag. 15 di 20
PUMP PZ 55 – 60
DIRECT
OPERATED
VALVE
PILOT OPERATED VALVE
Mechanical seal
Mechanical seal
N° DESCRIPTION
N° DESCRIPTION
N° DESCRIPTION
N° DESCRIPTION
1
spacer
14 spacer
27 o-ring
40 valve guide rod
2
circlip **
15 spacer**
28 obturator
41 plug
3
circlip
16 spacer *
29 obturator
42 nameplate
4
anti rotating element
17 motor connection flange
30 obturator guide rod
43 mechanical seal jc *
5
tie rod
18 end cover
31 spacer
44 mechanical seal un *
6
obturator guide rod
19 ring nut
32 spacer
45 pilot valve
7
pump body
20 sprig
33 horizontal foot (option)
46 main screw **
8
ball bearing *
21 key **
34 vertical foot (option)
47 idler screw **
9
nut
22 spring
35 rivet
48 hexagonal socket head screw
10 nut
23 spring
36 washer
49 hexagonal socket head screw
11 nut
24 o-ring
37 seal ring
50 hexagonal socket head screw
12 nut
25 o-ring
38 locking washer
13 nut
26 o-ring *
39 pin
MUM – PZ – ENG – 12 – 12 - 5
pag. 16 di 20
(spare part
kit: *basic **superior __ standard)
PUMP PZ 72 – 156
DIRECT
OPERATED
VALVE
Mechanical seal
PILOT
OPERATED
VALVE
Mechanical seal
N° DESCRIPTION (PZ 72)
N° DESCRIPTION (PZ 72)
14 circlip **
32 seal ring
N° DESCRIPTION
N° DESCRIPTION
N° DESCRIPTION
N° DESCRIPTION
1
circlip
13 end cover
25 obturator
37 plug
2
obturator guide rod
14 ring nut
26
3
pump body
15 ring nut **
27 foot (option)
4
ball bearing *
16 sprig
28 foot (option)
40 mechanical seal un *
5
nut
17 key **
29 rivet
41 lubricating tube
pin
38 nameplate
39 mechanical seal jc *
6
nut
18 spring
30 washer
42 pilot valve
7
nut
19 spring
31 washer
43 main screw **
8
spacer **
20 o-ring
32 seal ring
44 idler screw **
9
spacer *
21 o-ring
33 locking washer **
45 hexagonal socket head
screw
10 spacer
22 o-ring *
34 anti rotating element
46 hexagonal socket head
screw
11 spacer (only PZ 102)
23 o-ring
35 pin
47 hexagonal screw
12 motor connection flange
24 obturator
36 valve guide rod
(spare part kit: *basic - **superior - __ standard)
MUM – PZ – ENG – 12 – 12 - 5
pag. 17 di 20
2 TROUBLESHOOTING
PROBLEM
SOLUTION
Incorrect rotation direction
For three-phase motors, the two wires used to connect the
electrical phases must be inverted
Phase connection error
Delivery flow-rate too low
The valves on the line are not fully open
Open the valves and restart the pump
The maximum pressure valve value is calibrated too low
Loosen the adjustment screw until it can be turned manually and start the pump for a few minutes with no pressure.
Then tighten the adjustment screw until the calibration
value desired is reached.
The filter is clogged or foreign bodies reduce
the flow
Check the plant. Check that no foreign bodies are inside the
pump.
Pressure too low
Leaks in the piping
Check the piping and identify any leaks
The outlet pressure is too low
Substitute the pump with a higher delivery flow-rate pump
The maximum pressure valve value is calibrated too low
Loosen the adjustment screw until it can be turned manually and start the pump for a few minutes with no pressure.
Then tighten the adjustment screw until the calibration
value desired is reached.
Difficult motor start-up
The pressure required by the system is too
high
Check the plant
Oil is too cold
Start-up the pump without pressure until the oil returns to its
normal temperature. Bring the system back to its working
pressure.
The motor is not suitable for the power required
Substitute the motor with a higher power rating motor
The motor calibration relay is too low
Increase the relay intervention threshold
The pump is noisy when operating
Check for:
No air is present in the system
The piping is not too long or the piping section diameter is
too small
The filter is not clogged or that the inlet valve is not closed
The inlet pressure is insufficient
The alignment between the motor and the pump is correct
The pump is not worn or damaged. Contact the manufacturer.
MUM – PZ – ENG – 12 – 12 - 5
pag. 18 di 20
3 DISPOSAL
When a pump cannot be repaired or must be demolished, it cannot just be disposed of; it must be
sent to a dismantler to be disassembled and to have its materials separated. Most parts of the
pump can be easily recycled. When the pump is placed out of service, it is recommended to separate the materials for reuse or for separated collection for disposal. No materials making up the
pump are toxic or dangerous for the health of the operators; therefore, they can be handled without any particular precautions.
The disposal of equipment and components at the end of their lifecycle must be carried out by
qualified personnel trained about correct handling methods and if necessary for machine disassembly.
4 WARRANTY
All SEIM pumps have a 12 month operating warranty and/or 18 months from the date of delivery,
unless otherwise agreed in writing. The warranty covers all manufacturing and material defects,
and foresees the substitution of spare parts or the repair of defective parts. The material to be repaired must be sent CARRIAGE FREE.
Once the pump has been repaired, it will be sent CARRIAGE FORWARD to the customer. The
warranty does not cover any intervention by SEIM technicians or pump disassembly from the
place it is installed. If, for practical reasons, a technician is sent to the premises of the customer,
the customer will be charged working costs at current prices, travelling and living costs.
THE WARRANTY DOES NOT INCLUDE:
¾
¾
¾
¾
Parts subject to wear;
Faults caused by bad use;
Faults caused by external agents;
Faults caused by negligence or lack of maintenance.
WARRANTY FORFEITURE:
In case of arrears or other breaches of contract;
Any repairs or modifications made to the pumps without written consent by SEIM,;
Tampering with or cancellation of the pump Serial Number;
When damage is caused by improper use and other causes not due to normal working conditions;
¾ If the pumps are disassembled, tampered with or repaired by personnel not authorized by
SEIM;
¾ In the case that the pumps are used for different purposes other than the purposes described in this manual.
¾
¾
¾
¾
Repairs performed under warranty do not interrupt the warranty duration.
MUM – PZ – ENG – 12 – 12 - 5
pag. 19 di 20