ETATRON D.S. MP Series User manual

USE AND MAINTENANCE MANUAL
ALTERNATIVE DOSING PUMP WITH PISTON
AND SPRING RETURN
Series MP
Type MP 12,5
MP 17,5
MP 25
MP 35

2
CONFORMITY DECLARATION
We declare under our responsibility that metering pumps and the drags of
this instruction and maintenance manual are in conformity of the 89/392
Machine Guideline and successive modifications, following the EEC 91/368,
93/44 and 93/68 and of the regulation UNI EN 292/2, of 11/92 and CEI EN 60204 -
1 of 9/93.
Via Catania, 4
00040 Pavona di Albano Laziale (RM)
Telefono: 06 9349891 r.a.
Fax: [phone]
www.etatronds.com

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INTRODUCTION
Dear Customer
We thank you for choosing this product and recommend you read this manual carefully before
starting installing the dosing pump. Please abide by the technical indications and safety rules herein
specified.
ETATRON D.S. is not responsible for any damage or injury due to
incorrect or improper use of the product.
TECHNICAL SUPPORT AND MAINTENANCE
The companies authorised to provide technical support and maintenance to pumps within the
European Union and worldwide are not listed.
For more detailed information, call our headquarters on the following number:
Sales Office Ph. [phone]
▲ATTENTION!
Installing the dosing pump in an environment with fumes and high
humidity is not recommended as the alum alloy reducer body and
motor, even though they have a finish coat, may be affected, unlike the
head made of stainless steel or plastic, which ensures full compability.
Therefore we highly recommend installing the dosing pump in a well
protected and ventilated environment.
TECHNICAL DATA AND CHARACTERISTICS CAN BE CHANGED WITHOUT NOTICE

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5
INDEX
Ref. Title Page
1PUMP PRESENTATION 6
1.1 INTENDED USE 6
2PUMP’S TECHNICAL DATA 6
3OPERATING CONDITIONS 8
4INTENDED AND NON-INTENDED USE OF THE PUMP 8
4.1 RESIDUAL RISKS 8
5TRANSPORT, HANDLING, STORAGE 8
5.1 CHECKING ANY DAMAGEOCCURREDDURINGSHIPPING 8
6BLOCK REMOVAL 9
7PUMPINSTALLATION 9
8PUMP POSITIONING 9
9 CONNECTING THE PUMP TO THE SYSTEM PIPES 9
9.1 CONNECTIONTO THESUCTION PIPE 9
9.2 CONNECTIONTO THEDELIVERY PIPE 11
10INSTALLING THE PULSATION DAMPER 12
10.1 INSTALLATION EXAMPLE 12
11TOPPING UP LUBRICATING OIL 12
12ACOUSTICVIBRATION FROM THE PUMP 13
13CONNECTING THE PUMP TO THE POWER SUPPLY 13
14ACTIVATINGTHE PUMP 14
14.1 OPERATION DESCRIPTION 14
15PUMPREGULATION 14
15.1 STROKE VARIATION WITHMANUAL SYSTEM 14
16OPTIONAL EQUIPMENT 14
16.1 STROKE VARIATION WITHSERVO CONTROL14
16.2 PUMP CONTROL WITHAPROXIMITY INDUCTIVE SENSOR 15
17ADDITIONAL EQUIPMENT CALIBRATION 15
17.1 OVERFLOW OR OVERPRESSURE VALVE 15
18MAINTENANCE AND REPAIR 15
18.1 SCHEDULED MAINTENANCE 15
19 FINDING FAULTS 16
19.1 INCONVENIENCES AND CURES 16
20“PTFE” GASKET PACK REPLACEMENT AND ADJUSTMENT17
20.1 GASKET PACK REPLACEMENT (HEADWITH EXECUTION 21) 17
20.2 “PTFE” GASKET PACK ADJUSTMENT AND COMPRESSION 17
21HEAD WITH SEAL GASKET CLEANING 17
21.1 SEAL GASKET CLEANING 17
21.2 PUMPING HEAD CLEANING. 18
22REPAIRS AT THE FACTORY 18
23DISABLING THE PUMP 18
24DISPOSAL OF HARMFUL SUBSTANCES 18

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1 PUMP PRESENTATION
1.1 INTENDED USE
Dosing pumps are used whenever you need to change the pump capacity.
THE ARE COMPOSED OF:
Motion: Reduces the number of revolutions as needed for dosing, turning the
rotary motion into reciprocating rectilinear motion through the cam,
with slide and recall spring.
Motion transmission: Die-cast aluminium and Eastover flexible coupling.
Adjustment: Changes the stroke from “0%” to “100%” through a screw which
chokes the return of the slide, whether the pump is idle or in motion.
Hydraulic parts: Suck the liquid to be dosed from the suction valve and push it through
the delivery valve.
Electric motor: Three-phase or single phase CVE or ADPE
Construction form: V18 –Class F – Protection IP 55
Three-phase voltage: 220/240 V – 380/415 V - 50 Hz or 220/280 - 380/480V - 60 Hz.
Single-phase voltage: 230V - 50 Hz.
Different voltages and frequencies are available on request
Casing components: Die-cast aluminium.
External motion parts: The slide is made of AISI 420, protection components and other
accessories are made of plastics.
2PUMP’S TECHNICAL DATA
The following tables show the technical data for each pump series. The user must refer to these data
to avoid damaging the pump and cause danger to the maintenance staff.

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MP 12,5 typedata
FREQUENCY Hz 50 60 50 60 50 60 50 60 HEAD VALVE
REDUCTION
RATIO I(1/40) F(1/24) C(1/14.5) B(1/12) Max pres.
bars (Kg/cm2)S.S. PVC
STROKES min/1' 35 42 58 70 96 116 116 / S.S. PVC Type Type
Ø
G.m.
MP 12,5 - 6 / / 0.8 1 1.3 1.6 1.6 / 20 10 AB 3 AC 3 1/2"
MP 12,5 - 11 2.4 2.8 4 4.8 6 8 8 / 20 10 AB3 AC 3 1/2"
MP 12,5 - 18 6 7.2 10 12 16 20 20 / 20 10 AB5 AC 4 1/2"
MP 12,5 - 25 13 16 22 27 36 44 44 / 20 10 AB5 AC 5 1/2"
MP 12,5 - 30 18.7 22.4 31 37.2 51 62 62 / 14 10 AB 6 AC 8 1/2"
MP 12,5 - 38 30 36 50 60 82 100 100 / 9 9 AB8 AC 8 1/2"
CAPACITY l/h
MP 12,5 - 47 47 56 78 94 129 156 156 / 5,5 5.5 AB8 AC 8 1/2"
MP 17,5 typedata
FREQUENCY Hz 50 60 50 60 50 60 HEAD VALVE
REDUCTION
RATIO F(1/20) C(1/14.5) B(1/11) Max pres.
bars (kg/cm2)S.S. PVC
STROKES min/1' 70 84 96 116 120 / S.S. PVC Type Type
Ø
G.m.
MP 17,5 - 6 1.3 1.56 1.7 2.11 2.2 / 10 20 AB3 AC 3 1/2"
MP 17,5 - 11
6 7.2 8 9.6 10 / 10 20 AB 3 AC 3 1/2"
MP 17,5 - 18
17 21 24 28 30 / 10 20 AB 4 AC 4 1/2"
MP 17,5 - 25
37 45 51 62 64 / 10 20 AB 5 AC 5 1/2"
MP 17,5 - 30
52 63 72 86 90 / 10 20 AB 8 AC 8 1/2"
MP 17,5 - 38
83 100 115 138 144 / 10 13 AB 8 AC 8 1/2"
MP 17,5 - 47
130 156 180 216 226 / 8.5 8.5 AB 8 AC 8 1/2"
MP 17,5 - 54
168 202 232 278 290 / 6.5 6.5 AB 13 AC 13 3/4"
CAPACITY l/h
MP 17,5 - 64
236 283 326 391 408 / 4.5 4.5 AB 13 AC 13 3/4"
MP 25 type data
FREQUENCY Hz 50 60 50 60 50 60 HEAD Valve
REDUCTION
RATIO F(1/25) C(1/14.5) B(1/12.5) Max pres.
bars (kg/cm2)AISI PVC
Strokes min/1' 56 67 96 116 112 / S.S. PVC TYPE TYPE
Ø
G.m.
MP 25 - 25 43 52 73 88 86 / 20 / AB6 AC 6 1/2"
MP 25 - 38 96 115 164 197 192 / 20 / AB8 AC 8 1/2"
MP 25 - 47 150 180 257 308 300 / 17 10 AB13 AC 13 3/4"
MP 25 - 54 192 231 329 395 384 / 13 10 AB13 AC 13 3/4"
MP 25 - 64 266 319 456 547 532 / 9.5 9.5 AB17 AC 17 1"
MP 25 - 76 383 460 656 788 766 / 6.5 6.5 AB22 AC 22 1"
CAPACITY l/h
MP 25 - 89 521 625 893 1072 1042 / 4.8 4.8 AB22 AC22 1"
MP 35 typedata
FREQUENCY Hz 50 60 50 60 50 60 Head Valve
REDUCTION
RATIO F (1/25) C(1/14.5) B(1/12.5) Max pres.
bars (kg/cm2)AISI PVC
STROKES min/1' 56 67 96 116 112 / S.S. PVC Type Type
Ø
G.m.
MP 35 - 54 268 322 460 553 537 / 10 13 AB 13 AC 13 3/4"
MP 35 - 64 372 446 638 766 744 / 9,5 9,5 AB 17 AC 17 1"
MP 35 - 76 536 769 918 1103 1072 / 6,5 6,5 AB 22 AC 22 1"
CAPACITY l/h
MP 35 - 89 730 875 1250 1500 1458 / 4 4 AB 27 AC 27 11/2"

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3OPERATING CONDITIONS
Actual capacity depends on viscosity, specific weight of pumped liquid and plant's load loss.
Capacity and pressure values reported in the tables are
obtained under operating conditions with steady pressure, water
at 15°C and pump installed at 30 cm above water level.
Actual capacity depends on viscosity, specific weight of pumped
liquid and plant’s load loss. Pay attention not to exceed the
project conditions to avoid inconveniences of different kinds.
The power of the motor installed on the pump is suitable for use
at a max altitude of 1,000 m ASL and operating temperature of
+5°C to +40°C.
For operating conditions other than those described, coefficients
vary according to the diagram data. A motor with higher capacity
than the listed type can be installed, if necessary.
4INTENDED AND NON-INTENDED USE OF THE PUMP
The range of applications the pump is intended for includes dosing liquid substances compatible with
the project materials to be used.
Before purchasing the pump, the customer must indicate the type of liquid to be dosed so our
technical office can execute the pumping head according to the data provided.
Should the pump have been used in other processes, the customer must contact our technical office
before use it again to get all information necessary for proper use.
4.1 RESIDUAL RISKS
•A type of risk may result from leakage in the gasket gland due to wear of the sealing gaskets.
Any such liquid must be drained for proper disposal or collection.
•In case of breakage, after emptying the system, depressurise the pump head and do thorough
cleaning using suitable tools (hose) and detergents. Then you can disassemble the pump.
Please note that the operator should always wear suitable protective devices (gloves, goggles,
boots, overall, etc.)
5TRANSPORT, HANDLING, STORAGE
Usually the customer chooses the carrier and they (customer and
carrier) shall be responsible for transportation.
The pump must be transported or handled in an upright position,
do not lay it down.
This type of pump comes in a single package; custom packages can be
provided on demand.
If the pump is to be kept out of use for a long time, fill the reducer with
SAE 85W-140 oil to avoid oxidation of components. This is particularly
necessary before starting the pump again.
The equipment should be stored in a dry, well-ventilated place away
from heat and at a temperature between +5°C and +40°C.
5.1 CHECKING ANY DAMAGE OCCURRED DURING SHIPPING
Before opening the package, check its condition; in case it is damaged, immediately report the
incident to the carrier.
Then thoroughly check the contents to find and readily report any damage due to transportation or
handling.

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6BLOCK REMOVAL
Before installing the pump, make sure to remove all protective caps
located on the suction inlets and the valve delivery system.
7PUMP INSTALLATION
9Allow enough room (operation areas) to check and
disassemble the pump, particularly on the hydraulic side
(pumping head) and next to the adjustment knob.
9We recommend you install outlets along the delivery pipe
and near the pumping head to empty the liquid from the
plant.
9If the pump is installed outdoor, a suitable shed is
required, particularly if it is equipped with a plastic head,
servo controls or other delicate instruments.
9Beyond standard caution, we recommend the installer
and/or construction engineer to install the pump in a well-
ventilated environment or on board of machinery to allow
any liquid that may come out to drain off, thus preserving
facilities and ensuring good maintenance.
8PUMP POSITIONING
9The pump must be installed on a strong base (made of metal, cement, etc.) which ensures
stability and levelling of mount and has a suitable grade, preventing any strain on the axis.
9The pump should be placed downstream and the suction pipe should be as short as possible
and provided with wide-angle bends for easy pumping of fluid.
¾Manually check the motor fan for loose rotation of the pump.
If the fan is stuck, check pump positioning and pipe alignment.
9CONNECTING THE PUMP TOTHE SYSTEM PIPES
9.1 CONNECTION TO THE SUCTION PIPE
Following are some recommendations installers should follow for proper installation.
9The suction pipe should be as short as possible. On each angle place a wide-angle bend.
9Before connecting the pipes to the pump connections, wash the pipes of any stray fragments,
welding drops, pieces of gaskets, etc.
9Avoid creating a reverse grade to let air bubbles out and make sure the suction system is air-
tight for easy activation of the pump.
9The diameter of suction pipes must be larger than the pump valves.
9Speed of fluid in pipe cannot exceed 0.7 m/s for liquids with viscosity up to 100 mPa - (cPs).

10
The table below shows pipe internal diameters to be selected according to product viscosity and
number of strokes of the pump.
Fluids equivalent to Fluid viscosity equivalent to
Water +15°C 0 / 100 mPa (CP) - 20°E 100 / 300 mPa (CP) - 20 / 45°E
STROKES min/1' 112 to 120 50 to 70 30 to 50
Ø 4 0 – 12 0 – 5 0 – 3
Ø 6 0 – 45 0 – 18 0 – 11
Ø 8 0 – 96 0 – 40 0 – 23
Ø 10 0 – 220 0 – 90 0 – 53
Ø 13 0 – 380 0 – 155 0 – 93
Ø 16 0 – 500 0 – 200 0 – 120
Ø 20 0 – 700 0 – 280 0 – 170
Ø 25 0 – 1050 0 – 420 0 – 250
Ø 32 0 – 1200 0 – 480 0 – 290
Pipe internal diameter
Capacity l/h
Ø 40 0 – 1450 0 – 590 0 – 350
CONNECTION EXAMPLES
CORRECT APPLICATION WRONG APPLICATION
Acceptable
solution

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CONNECTION EXAMPLES
CORRECT APPLICATION WRONG APPLICATION
9.2 CONNECTION TO THE DELIVERY PIPE
Proper realisation of the delivery pipe path is particular important to ensure the good functioning of the
pump.
The installer should refer to the following indications to ensure correct installation of the system.
¾The tube path should be as linear as possible, suspended on its own without putting any strain
on the pump. Moreover, pipe fittings must be installed in a such a way that any expansion due
to heat has no impact on the pump head.
¾Avoid creating a reverse grade to let air bubbles out and make sure the suction system is air-
tight.
¾Provide one or more T-couplings after the delivery flange that can be used for installing
pressure gauges, safety valves, and pulsation dampers.
CONNECTION EXAMPLES
CORRECT APPLICATION WRONG APPLICATION
It suctions debris
from bottom
It blocks the
fluid stream
Accettable
execution
Funnel Relief valve
Injection valve
Delivery valve is not
enough to avoid
siphoning
.
Pressure in the main pipe
has a negative impact on
the secondary pipe and
p
um
p
.

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10INSTALLING THE PULSATION DAMPER
10.1 INSTALLATION EXAMPLE
Using a damper on the delivery system after the pump is highly recommended.
Benefits include: more steady flow rate, no vibrations along the entire line and protection against
pressure peaks.
Diagram of pulsing flow without damper Diagram of pulsing flow with damper
RECOMMENDED INSTALLATION EXAMPLE
LEGEND
1) Pulsation damper
2) Pressure gauge
3) Overflow or overpressure valve
4) Sample taking or drainage
5) 45° Y-filter
6) Capacity meter
7) Counterpressure valve
11TOPPING UP LUBRICATING OIL
All the pumps are supplied without lubricating oil, so the operator must fill the pump body or
gear box with oil before starting the pump.
The pump does not require lubrication of any additional
parts, therefore the oil quantity indicated in the table is
enough to guarantee good lubrication of mechanical
parts; the light on the side of the pump indicates that the
dose is correct.
For technical reasons, replace lubricant after 500 hours
from startup, then every 3,000 hours of operation or once
a year.
The user should dispose of waste oil according to the
existing laws and regulations.
Oil quantity to put in the pump body
Type Oil q.ty
ml
1st replacmt
h
2nd replacmt
h
MP 12,5 150 500 3,000
MP 17,5 300 500 3.000
MP 25 650 500 3,000
MP 35 650 500 3,000
Oil
topping
up
Max
level

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The type of oil recommended for the pump body or gear box should have the following requirements:
high viscosity index and cold flow rate.
Internationally defined as:
SAE 140 with 23° E viscosity (about 160 mPa/s)
This type of oil is available from different manufacturers:
Esso - Gear Oil GX 85W 140 Shell - Spirax HD 85W 140 IP - Pontiax HD 85W 140
Mobil - Mobilube HD 85W 140 BP - Nypogear EP 85W 140 Agip - Rofra MP 85W 140
12ACOUSTIC VIBRATION FROM THE PUMP
Hereunder follow the results of sound-level measurements carried out on a pump like the one supplied
to you.
The tables show the resulting data according to the general prescription in European Directive 89/392
EEC1989. Sound levels and vibrations have been checked for all pump types.
Control methods comply with ISO 3744 "Acoustics - Determination of sound power level of noise
source" - Engineering methods for free-field conditions over a reflecting plane" and with Directive ISO
2631 "Guide for evaluation of human exposure to whole-body vibration".
Sound level pressure measurements tables
Type MP 12,5
Pump under pressure
Max sound emission at
surface Average pressure level at surface Sound power level
dB(A) 71.7 dB(A) 67.9 dB(A) 71.4
Type MP 17,5
Pump under pressure
Max sound emission at
surface Average pressure level at surface Sound power level
dB(A) 76.7 dB(A) 73.2 dB(A) 76.7
Type MP 25
Pump under pressure
Max sound emission at
surface Average pressure level at surface Sound power level
dB(A) 79.3 dB(A) 75.6 dB(A) 79.1
Type MP 35
Pump under pressure
Max sound emission at
surface Average pressure level at surface Sound power level
dB(A) 79.3 dB(A) 75.6 dB(A) 79.1
13CONNECTING THE PUMP TOTHE POWER SUPPLY
▲ATTENTION!
Before activating the pump, check that the data on the motor plate are suitable for the
power line.
Verify no nearby obstacles hinder inspection and maintenance operations, as well as
proper ventilation of the installed pump.
Check the motor rotates counterclockwise as indicated by the arrow on the fan cover.

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MOTOR TO POWER SUPPLY CONNECTION DIAGRAM
14ACTIVATING THE PUMP
14.1 OPERATION DESCRIPTION
The operations required before activating the pump include:
9Check the oil indicator detects the oil in the pump body.
9Check the motor rotates as indicated by the arrow on the fan cover.
9Verify dosed liquid is not solidified or frozen in the pipes.
9Check all on-off valves on the pipes are fully open, and flexible hoses, if any, are not bent or
choked.
9Perform first startup with min pressure and 0 (zero) capacity, then increase it slowly through the
adjusting handle till max pump capacity is reached to let air go out quickly and safely.
15PUMP REGULATION
15.1 STROKE VARIATION WITH MANUAL SYSTEM
To vary the pump capacity from 100% to 0% (zero), turn the
adjustment knob clockwise. Each turn is 1/10 the piston stroke. Actual
value can be checked on the nonius.
The knob features 10 units, numbered from 0 (zero) to 9 (nine), each
corresponding to 1/100 of the piston stroke.
16OPTIONAL EQUIPMENT
16.1 STROKE VARIATION WITH SERVO CONTROL
If the pump is equipped with a servo control, the adjustment process described above is not
applicable.
Please read the manual supplied with the servo control.

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16.2 PUMP CONTROL WITH A PROXIMITY INDUCTIVE SENSOR
The proximity inductive sensor can be installed on the dosing pump to check
the number of pumping cycles. Every pumping cycle – i.e. one turn of the
cam shaft – is matched with an impulse transmitted by the proximity
inductive sensor.
Per more information, please read the included technical sheet.
17ADDITIONAL EQUIPMENT CALIBRATION
17.1 OVERFLOW OR OVERPRESSURE VALVE
The scheme shows the correct installation. The order to be
followed for the adjustment of the overflow or overpressure
valve is described below.
9Loosen the adjusting screw on top of the overflow or
overpressure valve (Pos. 1).
9Start the pump and let air out of the pipe.
9Close the on-off valve (Pos. 2).
9Slowly tighten the adjusting screw of the overflow or
overpressure valve on top (Pos. 1), until the pressure
gauge (Pos. 3) shows the adjusted pressure you want
for the valve.
9Slowly open the on-off valve (Pos. 2).
9To check if adjustment is correct, close the on-off valve
again (Pos. 2). The pressure shown on the pressure
gauge will be the same as before.
Note: Valves are not calibrated. Calibration percentages are merely indicative and are left to the
installer’s choice.
For OVERPRESSURE or OVERFLOW operation – System pressure + 15%.
18MAINTENANCE AND REPAIR
18.1 SCHEDULEDMAINTENANCE
¾To ensure security and high performance of the pump over the time, it should undergo
maintenance operations that consist of visual checks.
¾Check that components inside and outside the pump are not affected by corrosion or
degradation (cracking, tearing, breaking.) If any of these problems occur, damaged parts must
be replaced.
¾If the pumping head is made of plastics, pay particular attention as it is more sensitive to
temperature change and settling.
¾The user should check the pump shortly after first startup and record data in a suitable log book
(Maintenance Book). The user will then be able to schedule operations more accurately based
on the obtained results.

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The following table indicates the parts that require ordinary maintenance in one year of operation.
Components to be checked
Drive Head Valve assembly Motor
Maintenance
interval Oil Gaskets Piston Plastic Metal Absorptions
Hours 500
Biannual X X X X X X
Yearly Replacement
The "DRAWINGS AND TABLES" manual indicates the symbols corresponding to the parts subject to
wear which require frequent maintenance.
▲ATTENTION!
BEFORE PERFORMING ANY MAINTENANCE ON THE PUMP, CHECK THAT:
¾Pump is idle and disconnected from the power line.
¾Pump head and plant are depressurised and the liquid has been emptied from the pump.
¾The maintenance staff should wear all suitable protective devices, i.e.: gloves, masks, goggles,
boots and anything else necessary to avoid pumped liquid comes in contact with skin.
19 FINDING FAULTS
19.1 INCONVENIENCES ANDCURES
Neglect can cause damage or malfunctioning which requires extra maintenance just to check proper
operation of the following accessories.
Dosed liquid leakage from the hole under the lantern:
9Gaskets are worn or piston is scored.
•After depressurising and emptying the system, disassemble the head, remove damaged
gaskets, and check piston. Replace it if scored.
Reduced capacity:
9Make sure filter is not clogged.
9Make sure suction pipe is not clogged due to stray fragments or sediments.
9Make sure valves are not clogged or worn.
9After depressurising and emptying the system, check all parts. Replace worn parts if
necessary.
Air in the delivery pipe:
Air bubbles in the delivery pipe not only reduce pump's performance and capacity, but they also
show installation and pump connection are not correct.
Some possible reasons include:
9Wear of piston gaskets.
9Infiltration along the suction pipe.
9The suction pipe causes heavy load loss as its section is not suitable for pump capacity
and valve diameter.
9Elbows have been installed.
9The pump has been installed upstream.
If any of such problems occur, intervene promptly to avoid safety issues, as well as
reduced capacity and efficiency of the pump.
The following remedies are necessary:
9Replace the gaskets.
9Check the pipe connections.
9Increase the suction pipe diameter so it is larger than the valve.
9Mount wide-angle bends.
9Place the pump downstream.

17
20“PTFE” GASKET PACK REPLACEMENT AND ADJUSTMENT
20.1 GASKET PACK REPLACEMENT (head with execution 21)
After the maintenance procedure is complete, proceed as follows:
9Disconnect the pumping head 1from the system
and lantern of the dosing pump.
9Clean the pumping head to ensure the operator can
safely handle the component.
9Loosen the ring nut 11 and remove it.
9Check if piston 2 is worn out. If it is scored or cut,
replacement is recommended. In this case, loosen
the dowels 15.
9Remove the damaged gasket pack 3and place the
new pack into the pumping head paying attention to
the gasket direction.
9Tighten the clamping ring nut 11 till it touches the
gaskets. Do not overtighten.
9Place the pumping head 1on the piston 2, push it
against the lantern, then fix it with screws 4.
20.2 “PTFE” GASKET PACK ADJUSTMENT AND COMPRESSION
▲ATTENTION!
To ensure this type of gaskets is water-tight, it needs adjusting before it can used inside
the head. To carry out the procedure, follow the steps described below.
9Connect the dosing pump to separate pipes that suck
water,and tighten the ring nut one-fourth of a turn to
apply light pressure on the gaskets.
9The upper part of the head will drip.
9Let the pump run for 4/5 hours before tightening the
ring nut again.
9After this time has elapsed, tighten another fourthof a
turn.
9Let the pump run 2 to 3 hours before tightening the
ring nut again; verify if it drips less.
9This tightening and checking procedure must be
carried out till the dripping stops.
9After making sure that the gaskets are fully tight,
connect the dosing pump to the system.
▲ATTENTION!
The gasket pack must be checked and adjusted
regularly. While carrying out the adjustment operations, make sure not to tighten the ring
nut too strongly to avoid damaging the gaskets.
21HEAD WITH SEAL GASKET CLEANING
This type of head is mainly used with products that may SEDIMENT or CRYSTALLISE, which
requires internal parts to be cleaned to avoid sedimentation and cause abrasion to the piston and
gasket pack.
21.1 SEAL GASKET CLEANING
Continuously washing the gaskets helps remove deposits, and prevents the product from hardening
and causing damage to the sealing profile.
Let water flow through the seal gasket area, at a rate of 40/50 l/h, and pressure of 0.5/1 bar.
13 11
4
2 15
PUMPING HEAD
ASSEMBLY DRAWING

18
Connect the pipe from the water system including the needle valve “C” to the top of the head. At the
bottom, the pipe must be connected to the draining system for disposal according to the existing law.
21.2 PUMPING HEAD CLEANING.
Standard diagram to build the system and washing
procedure.
•As shown in the diagram, washing requires an
on-off valve “A” to be installed on the suction
pipe of the head.
•An on-off valve “B” must be installed on the
branch pipe connected to the water system.
•Once dosing is complete, before stopping the
pump close the “A” valve, simultaneously open
the “B” valve and the “C” valve in the gasket
area, and let washing water circulate for about
3/4 minutes.
•After this time has elapsed, stop the pump and
let water flow till it becomes clear.
•Once washing is complete, close the valves
“B” and “C”, and open the valve “A” to pump
the product.
Note: This procedure should be also carried out
after a work process if the pump is being
stopped for a long time.
22REPAIRS AT THE FACTORY
In most cases, replacing damaged parts does not involve any difficult operations. Before starting, the
operator must refer to the drawings in the manual (Drawings and tables) and follow the instructions.
If the failure is difficult to deal with on site, we recommend you send the pump to our factory.
▲ATTENTION!
ITEMS ARE ACCEPTED FOR FACTORY REPAIR ONLY AT THE FOLLOWING
CONDITIONS:
The carter must be emptied of oil and any other liquid or any deposit must be removed
from the pump, with particular regard to hydraulic parts (head and valves), so the
equipment can be handle without danger to the operator even without wearing gloves.
Customer shall state that the parts have been cleaned to ensure safe handling.
If parts are sent to us without complying with these instructions, they will be returned
unrepaired and relevant expenses shall be charged to the sender.
23DISABLING THE PUMP
▲ATTENTION!
Before disabling the pump, clean it thoroughly with detergents which are compatible with
the liquid pumped in the hydraulic parts, as residual toxic, caustic or acid liquid can
easily deposit.
¾Before removing the pump from the plant, verify no liquid is under pressure and intercept the
pipe next to the pump.
¾Comply with the existing laws for recycling raw materials and disposing of metallic materials in
the pump.
24DISPOSAL OF HARMFUL SUBSTANCES
All toxic substances, be them liquid, solid or harmful in any way, must be disposed of by the operator
according to the law in force.
A
B
C
SUCTION ON-OFF
VALVE
FROM THE WATER
SYSTEM FOR HEAD
WASHING
FROM WATER
SYSTEM FOR
GASKET WASHING
DRAIN PIPE
DELIVERY PIPE TO
THE SYSTEM

19
NOTE:

For a best service of our pumps use
ACCESSORIES
Request them to our Commercial office
00040 Pavona di Albano Laziale ( RM) - Via Catania, 4
Telefono 06 9349891 r. a. - Fax. [phone]
www.etatronds.com