Pressol 19 060 User manual

81 555 932 A401 GB
Operating Instructions
Diaphragm Pumps
19 060
19 061
19 062

2
GB Operating Instructions Diaphragm Pumps
Pressol Schmiergeräte GmbH
This documentation is exclusively intended for the operating company and their sta.
Without our written consent, the content of this documentation (texts, gures, drawings, charts,
diagrams etc. ), may not be duplicated or distributed, neither in full or in part, utilized for the purpose of
competition or passed on/made availabe to third parties.
Pressol Schmiergeräte GmbH
Parkstraße 7
93167 Falkenstein | Germany
Phone: [phone]
Fax: [phone]
[e-mail]
www.pressol.com
Operating instructions translation
Date of issue: 10/2017
We reserve the right to make design and product modications, which serve to improve the product.
Table of Contents
1. Identication Code___________________________________________________________________3
2. Technical Data ______________________________________________________________________4
3. General Notes ______________________________________________________________________12
4. Operating Principle _________________________________________________________________13
5. Pneumatic Connection_______________________________________________________________14
6. Installation and Use Instruction________________________________________________________14
6.1 Transport _________________________________________________________________________14
6.2 Intended conditions of use ___________________________________________________________14
6.3 Installation ________________________________________________________________________14
6.4 Start Up ___________________________________________________________________________16
6.5 Use_______________________________________________________________________________17
6.6 Stop______________________________________________________________________________17
7. Maintenance_______________________________________________________________________17
7.1 Recommendations __________________________________________________________________17
7.2 Disassembly _______________________________________________________________________18
7.3 Inspection _________________________________________________________________________19
8. Safety Risks ________________________________________________________________________19
8.1 Operations for Installation and Start Up _________________________________________________22
8.2 Operations for Use and Maintenance ___________________________________________________22
8.3 Operations for Repair ________________________________________________________________22
8.4 Disposal___________________________________________________________________________22
9. Troubleshooting and Possible Causes___________________________________________________23

3
Operating Instructions Diaphragm Pumps GB
1. IDENTIFICATION CODE
Each pump is supplied with the serial and model abbreviation and the serial number on the rating pla-
te, applied onto the support side. Check this data upon receiving the goods. Any discrepancy between
the order and the delivery must be communicated immediately. In order to be able to trace data and
information, the abbreviation, model and serial number of the pump must be quoted in all correspon-
dence.
Pump
Model
Pump
Body
Air
Diaphragm
Fluid
Diaphragm
Balls Ball
Seats
O-ring Connection Version
Atex Zone 1
19 060
19 061
19 062
P - PP H - HYTREL T - PTFE T - PTFE P - PP V - FPM 1 - BSP
THREATED
x
HERSTELLUNGSJAHR
SERIENNUMMER
ATEX ZERTIFIKATION
MODELL
code: P065KCMTTKV1-
Serial No. : P0311 Year: 04/2012
II 3/3 GD c IIB T135°C
g
g
f
f
CERT. ZONE 2 II 3/3 GD c IIB T 135°C
CERT. ZONE 2 II 2/2 GD c IIB T 135°C
YEAR OF MANUFACTURE
SERIAL NUMBER ATEX CERTIFICATION
MODEL

4
GB Operating Instructions Diaphragm Pumps
19 060 A B C D E H Q S T Weight /
Kg
Min/Max
Temp.
223 156 233 110 110 185 59 7 27 4 -4°C/65°C
2. TECHNICAL DATA

5
Operating Instructions Diaphragm Pumps GB
Position Material Description Q. for Pump
1PP + VTR Central half block 2
1 PP + CF Central half block 2
2 POM-c Pneumatic Exchanger 1
3 AISI 304 Shaft 1
3a NBR Shaft-ring 1
5 STEEL Bellville washer 2
6 ALUMINIUM Air side cap 2
7a Hytrel Air diaphragm 2
7a Santoprene Air diaphragm 2
7b PTFE Fluid diaphragm 2
8PP + VTR Fluid side cap 2
8 ECTFE Fluid side cap 2
8 PP + CF Fluid side cap 2
8 ALUMINIUM Fluid side cap 2
8 AISI 316 Fluid side cap 3
9 PP Stopper central half block 1
10 FELT Silencer 1
11 PP + VTR Pump casing 2
11 PVDF + CF Pump casing 2
11 PP + CF Pump casing 2
11 ALUMINIUM Pump casing 2
11 AISI 316 Pump casing 2
11 AISI 316 POLISHED Pump casing 2
12 PP + VTR Upper / lower manifold 2
12 PVDF + CF Upper / lower manifold 2
12 PP + CF Upper / lower manifold 2
12 ALUMINIUM Upper / lower manifold 2
12 AISI 316 Upper / lower manifold 2
12 AISI 316 POLISHED Upper / lower manifold 2
13 PP + VTR Ball cage guide 4
13 ECTFE Ball cage guide 4
14 PTFE Ball 4
14 AISI 316 Ball 4
14 EPDM Ball 4
14 NBR Ball 4
15a PP Ball seat with o-ring or gasket Nº 41 4
15a PVDF Ball seat with o-ring or gasket Nº 41 4
15b UHMW HDPE Ball seat 4
15b ALUMINIUM Ball seat 4
15b AISI 304 Ball seat 4
19 AISI 304 Screw manifold 8
19b AISI 304 Nuts collector 8
21 AISI 304 Screw casing 12
21a AISI 304 Washers 20
21b AISI 304 Nuts 16
22 AISI 304 Screw central half block 4
22a AISI 305 Washers central half block 4
26 NBR O-ring 2
28 NBR O-ring 1
30 NBR O-ring 4
32 NBR O-ring upper 4

6
Position Material Description Q. for Pump
32 FPM O-ring upper 4
32 EPDM O-ring upper 4
32 PTFE Gasket upper 4
33 NBR O-ring lower 4
33 FPM O-ring lower 4
33 PTFE Gasket lower 4
33 EPDM O-ring lower 4
41 NBR Internal O-ring seat 4
41 FPM Internal O-ring seat 4
41 PTFE Internal gasket seat 4
41 EPDM Internal O-ring 4
46* AISI 304 Reinforcing ring manifold 2
47 PP Stroke Spacer 2
51 ALUMINIUM Air connection with O-ring 1
*ACCESSOIRES
GB Operating Instructions Diaphragm Pumps

7
Position Material Description Q. for Pump
32 FPM O-ring upper 4
32 EPDM O-ring upper 4
32 PTFE Gasket upper 4
33 NBR O-ring lower 4
33 FPM O-ring lower 4
33 PTFE Gasket lower 4
33 EPDM O-ring lower 4
41 NBR Internal O-ring seat 4
41 FPM Internal O-ring seat 4
41 PTFE Internal gasket seat 4
41 EPDM Internal O-ring 4
46* AISI 304 Reinforcing ring manifold 2
47 PP Stroke Spacer 2
51 ALUMINIUM Air connection with O-ring 1
*ACCESSOIRES
19 061 A B C D E H Q S T Weight /
Kg
Min/Max
Temp.
265 175 245 108 175 189 50 9 29 6,5 -4°C/65°C
Operating Instructions Diaphragm Pumps GB

8
Position Material Description Q. for Pump
1 PP Central block 1
1 PP + CF Central block 1
1a NBR O-ring 1
2 POM-c Pneumatic-Exchanger 1
3 AISI Shaft 1
3a NBR O-ring 1
4 POM-c Diaphragm with O-ring 1
5 STEEL Bellville washer 2
6 ALUMINIUM Air side cap 2
7a Hytrel Air diaphragm 2
7a Santoprene Air diaphragm 2
7a EPDM Air diaphragm 2
7a NBR Air diaphragm 2
7b PTFE Fluid diaphragm 2
8PP + VTR Fluid side cap 2
8 ECTFE Fluid side cap 2
8 PP+CF Fluid side cap 2
8 ALUMINIUM Fluid side cap 2
8 AISI 316 Fluid side cap 3
9PP + VTR Silencer grid 1
10a FELT External silencer 1
10b FELT Internal silencer 1
11 PP + VTR Pump casing 2
11 PVDF + CF Pump casing 2
11 PP + CF Pump casing 2
11 ALUMINIUM Pump casing 2
11 AISI 316 Pump casing 2
11 AISI 316 POLISHED Pump casing 2
12 PP + VTR Upper/lower manifold 2
12 PVDF + CF Upper/lower manifold 2
12 PP + CF Upper/lower manifold 2
12 ALUMINIUM Upper/lower manifold 2
12a AISI 316 Upper manifold 2
12b AISI 316 Lower manifold 2
12a AISI 316 Upper manifold CLAMP 2
12b AISI 316 POLISHED Lower manifold CLAMP 2
13 PP + VTR Ball cage guide 4
13 ECTFE Ball cage guide 4
14 PTFE Ball 4
14 AISI Ball 4
14 EPDM Ball 4
14 NBR Ball 4
15 PP Ball seat 4
15 PVDF Ball seat 4
15 PP Ball seat 4
15 PVDF Ball seat 4
15 UHMW HDPE Ball seat 4
15 ALUMINIUM Ball seat 4
15 AISI Ball seat 4
16 PP + VTR Collar 2
17 PP + VTR Foot 2
GB Operating Instructions Diaphragm Pumps

9
Position Material Description Q. for Pump
1 PP Central block 1
1 PP + CF Central block 1
1a NBR O-ring 1
2 POM-c Pneumatic-Exchanger 1
3 AISI Shaft 1
3a NBR O-ring 1
4 POM-c Diaphragm with O-ring 1
5 STEEL Bellville washer 2
6 ALUMINIUM Air side cap 2
7a Hytrel Air diaphragm 2
7a Santoprene Air diaphragm 2
7a EPDM Air diaphragm 2
7a NBR Air diaphragm 2
7b PTFE Fluid diaphragm 2
8PP + VTR Fluid side cap 2
8 ECTFE Fluid side cap 2
8 PP+CF Fluid side cap 2
8 ALUMINIUM Fluid side cap 2
8 AISI 316 Fluid side cap 3
9PP + VTR Silencer grid 1
10a FELT External silencer 1
10b FELT Internal silencer 1
11 PP + VTR Pump casing 2
11 PVDF + CF Pump casing 2
11 PP + CF Pump casing 2
11 ALUMINIUM Pump casing 2
11 AISI 316 Pump casing 2
11 AISI 316 POLISHED Pump casing 2
12 PP + VTR Upper/lower manifold 2
12 PVDF + CF Upper/lower manifold 2
12 PP + CF Upper/lower manifold 2
12 ALUMINIUM Upper/lower manifold 2
12a AISI 316 Upper manifold 2
12b AISI 316 Lower manifold 2
12a AISI 316 Upper manifold CLAMP 2
12b AISI 316 POLISHED Lower manifold CLAMP 2
13 PP + VTR Ball cage guide 4
13 ECTFE Ball cage guide 4
14 PTFE Ball 4
Position Material Description Q. for Pump
19 AISI Screw manifold 8
19b AISI Nuts collector 8
21 AISI Screw casing 12
21a AISI Washers 20
21b AISI Nuts 12
23 AISI Screw silencer grid 4
24 AISI Screw cover pneumatic exchanger 1
31 NBR O-ring silencer 1
32 NBR O-ring 4
32 FPM O-ring 4
32 EPDM O-ring 4
32 PTFE O-ring 4
33 NBR O-ring 4
33 FPM O-ring 4
33 PTFE O-ring 4
33 EPDM O-ring 4
41 NBR O-ring 4
41 FPM O-ring 4
41 PTFE O-ring 4
41 EPDM O-ring 4
42 POM-c Bushing with O-ring 1
43 STEEL Seeger pneumatic exchanger 1
44 STEEL Seeger central block 1
45 PP + VTR Cover pneumatic exchanger 1
Operating Instructions Diaphragm Pumps GB

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19 062 A B C D E H Q S T Weight /
Kg
Min/Max
Temp.
370 222 370 157 238 294 69 9 39 15 -4°C/65°C
GB Operating Instructions Diaphragm Pumps

11
Position Material Description Q. for Pump
1 PP Central block new version 1
1 PC + CF Central block new version 1
1a NBR O-ring 1
2 POM-c Pneumatic Exchanger 1
3 AISI Shaft 1
3a NBR Shaft O-ring 1
4 POM-c Intermediate plate with O-ring 1
5 STEEL Belleville washer 4
6 ALUMINIUM Air side cap 2
7a Hytrel Air diaphragm 2
7a Santoprene Air diaphragm 2
7a EPDM Air diaphragm 2
7a NBR Air diaphragm 2
7b PTFE Fluid diaphragm 2
8PP + VTR Fluid side cap 2
8 ECTFE Fluid side cap 2
8 PP + CF Fluid side cap 2
8 PVDF + CF Fluid side cap 2
8 ALUMINIUM Fluid side cap 2
8 AISI 316 Fluid side cap 2
9PP + VTR Silencer grid with O-ring 1
10a FELT External silencer 1
10b FELT Internal silencer 1
11 PP + VTR Pump casing 2
11 PVDF + CF Pump casing 2
11 PP + CF Pump casing 2
11 ALUMINIUM Pump casing 2
11 AISI 316 Pump casing 2
11 AISI 316 POLISHED Pump casing 2
12 PP + VTR Upper / lower manifold 2
12 PVDF + CF Upper / lower manifold 2
12 PP + CF Upper / lower manifold 2
12 ALUMINIUM Upper / lower manifold 2
12a AISI 316 Upper manifold 2
12b AISI 316 Lower manifold 2
12a AISI 316 POLISHED Upper manifold CLAMP 2
12b AISI 316 POLISHED Lower manifold CLAMP 2
13 ECTFE Ball cage guide 4
14 PTFE Ball 4
14 AISI 316 Ball 4
14 EPDM Ball 4
14 NBR Ball 4
15 PVDF Ball seat 4
15 PP Ball seat 4
15 UHMW HDPE Ball seat 4
15 ALUMINIUM Ball seat 4
15 AISI Ball seat 4
16 PP + VTR Collar 2
17 PP + VTR Foot 2
19 AISI Screw manifold 8
19a AISI Washers 8
Operating Instructions Diaphragm Pumps GB

12
Position Material Description Q. for Pump
19b AISI Nuts collector 8
21 AISI Screw casing 20
21a AISI Washers 20
21b AISI Nuts 20
23 AISI Screw silencer grid 4
24 AISI Screw cover pneumatic exchanger 1
31 NBR O-ring silencer 1
32 NBR O-ring upper for plastic-aluminium 4
32 FPM O-ring upper for plastic-aluminium 4
32 EPDM O-ring upper for plastic-aluminium 4
32 PTFE O-ring upper for plastic-aluminium 4
32 NBR O-ring upper for AISI 4
32 FPM O-ring upper for AISI 4
32 EPDM O-ring upper for AISI 4
32 PTFE O-ring upper for AISI 4
33 NBR O-ring lower 4
33 FPM O-ring lower 4
33 EPDM O-ring lower 4
33 PTFE Gasket lower 4
42 POM-c Command bush with O-ring new version 1
43 STEEL Seeger pneumatic exchanger 1
44 STEEL Seeger pneumatic exchanger 1
45 PP + VTR Cover pneumatic exchanger 1
46* AISI Reinforcing ring 2
47 PP Stroke spacer 2
*ACCESSOIRES
3. GENERAL NOTES
The diaphragm pumps are air-operated, double-diaphragm positive-displacement pumps, designed
and manufactured for pumping uids that are chemically compatible with the constructive materials
of the pump. The characteristics of the uid (pressure, temperature, chemical reactivity, specic weight,
viscosity, vapor pressure) and of the environment must be compatible with the pump characteristics
and are dened in the ordering phase. Pressol is not responsible for the pumped liquid. The customer
must ensure that there is compatibility between the pumped liquids and pump materials.
The diaphragm pumps are self-priming; at start-up the pipes can be empty.
The declared dry negative suction is referred to intake of water at a temperature of 20°C/ 68°F. The
priming time and the diaphragm’s life depend on:
- the suction circuit (total length and diameter)
- specic weight of the pumped uid
- viscosity of the pumped uid
- negative suction: max 5.000 cps (at 18°C / 64,4°F)
- below head suction: max 50.000 cps (at 18°C / 64,4°F) Diaphragm pumps may be used dry
Diaphragm pumps cannot be used to generate a vacuum.
Make sure that the physical-chemical characteristics of the uid have been correctly evaluated.
GB Operating Instructions Diaphragm Pumps

13
Position Material Description Q. for Pump
19b AISI Nuts collector 8
21 AISI Screw casing 20
21a AISI Washers 20
21b AISI Nuts 20
23 AISI Screw silencer grid 4
24 AISI Screw cover pneumatic exchanger 1
31 NBR O-ring silencer 1
32 NBR O-ring upper for plastic-aluminium 4
32 FPM O-ring upper for plastic-aluminium 4
32 EPDM O-ring upper for plastic-aluminium 4
32 PTFE O-ring upper for plastic-aluminium 4
32 NBR O-ring upper for AISI 4
32 FPM O-ring upper for AISI 4
32 EPDM O-ring upper for AISI 4
32 PTFE O-ring upper for AISI 4
33 NBR O-ring lower 4
33 FPM O-ring lower 4
33 EPDM O-ring lower 4
33 PTFE Gasket lower 4
42 POM-c Command bush with O-ring new version 1
43 STEEL Seeger pneumatic exchanger 1
44 STEEL Seeger pneumatic exchanger 1
45 PP + VTR Cover pneumatic exchanger 1
46* AISI Reinforcing ring 2
47 PP Stroke spacer 2
*ACCESSOIRES
The maximum temperature referred to water in continuous operation depends on the version of the
materials (indicated on the rating plate) and on the environment in which the pump will be installed:
The pump may be operated at a maximum pressure equal to 1.5 times the head value with closed
delivery.
The value of the vapor pressure of the pumped uid must be greater (of at least 3 mwc - meters of
water column) than the dierence between the total absolute head value (pressure on suction level
subtracted of the suction height) and the leakages of the suction section.
The pumped uid may contain particles suspended in dierent concentrations in accordance with the
type of valve assembled:
4. OPERATING PRINCIPLE
The pneumatic distribution system sends compressed air behind one of the two Diaphragm (A), which
pushes the uid towards the delivery circuit. Simultaneously, the opposite diaphragm (B) is in the
intake phase since it is dragged by the shaft that connects it to the other diaphragm (A) under pressu-
re; air present behind it is discharged into the environment through the ow rate regulator present on
the pump , while a pressure drop is created in the uid chamber which sucks the uid from the suction
circuit. When the diaphragm (A), under pressure, reaches the stroke limit, the distributor switches
the two inputs to the chamber on the Diaphragm air side, putting diaphragm (B) under pressure and
diaphragm(A) in discharge. When the pump reaches its original starting point, each diaphragm has
carried out one air discharge stroke and one uid delivery stroke. This sequence of movements makes
up a complete pumping cycle.
VERSION MAX TEMP.
ATEX ZONE 2
MAX TEMP.
ATEX ZONE1
PP / PC 60° C / 140° F 60° C / 140° F
VERSION MAX -TEMP (°C / °F)
PP / PC 0 - 40° C / 14 - 104° F
MODEL 19 060 19 061 19 062
MAX DIM. mm. 3,5 3,5 7,5
Operating Instructions Diaphragm Pumps GB

14
5. PNEUMATIC CONNECTION
WARNING: the pneumatic supply of the pumps must be carried out with oil-free, ltered, dry and
unlubricated air. Avoid pressure drops by using pipes and adjusting and controlling elements having
characteristics suitable for the pump. In case of installation in atex zone, the compressor must suck air
from outside the area classied as atex or use inert gas.
Minimum pressure supply: 2 bar Maximum pressure supply: 7 bar
1 – pressure regulator with gauge
2 - shut-o valve
3 – way valve
4 – ow regulator
6. INSTALLATION AND USE INSTRUCTIONS
6.1 TRANSPORT
• Cover the hydraulic connections
• Lift the hydraulic plastic parts without mechanical stress
• For transport on irregular roads, cushion the bumps with suitable support plane
• Blows and impacts may damage parts that are important for the machine operation and safety
6.2 STORAGE
• In case of long breaks before installation, store in original boxes. The boxes should be stored o the
ground, in a closed, clean and dry environment.
• In the event that the packaging was not received intact, it will be necessary to take the pump out of
it, check its integrity and repack it in a new package.
• The storage place should be in a closed environment with a temperature not lower than -5 ° C, not
higher than 40 ° C and with a moisture content not exceeding the value of 80%; any packaging must
not be subjected to shocks, vibrations and loads placed above it.
6.3 INSTALLATION
• It is essential for the pump self-priming operation that the hydraulic system is leak-proof
• Clean the system before connecting the pump
• The pump must not contain foreign bodies and all the seals on the hydraulic connections must be
removed
GB Operating Instructions Diaphragm Pumps
MODELL Ø
19 060 6 mm
19 061 8 mm
19 062 10 mm
Max. length between tube and pump plant: 5m

15
• Before starting the pump check the tightness of the screws of the pump bodies and manifolds.
• The pump positioning is horizontal, the uid delivery manifold must always be positioned in the
upper part (see arrows on the pump casing).
• Fastening may be on the oor or on the ceiling.
• Position the pump the closest possible to the extraction point.
Use the installation applications indicated in the following diagram
1. YES: use exible pipes reinforced with rigid spiral to connect the hydraulic circuit of the pump.
Rigid piping may cause strong vibrations and manifolds breaking. Do not use pipes with nominal
diameter smaller than the diameter of the pump connections. For negative installations and/or viscous
uids use pipes with greater diameter related to the nominal diameter of the pump.
2. YES: pulse damper
3. YES: gate valve for delivery adjustment
4. YES: intake for gauge or protection pressure switch
5. YES: pipe anchoring
6. YES: shut-o valve
7. NO: air pockets; the circuit must be linear and short
8. YES: discharge duct around the base
9. YES: wide and rigid ltering separator in case of open tanks
10. YES: wide and rigid ltering separator in case of open tanks
11. The length of the horizontal S as short as possible,
12. Slope of the pipe to the pump
13. The ow velocity of the uid max. 3.5 m / s
Operating Instructions Diaphragm Pumps GB

16
• Ensure drainage of uids which may come out of the pump.
• Fasten the pump using all the available locking holes, the support points must be levelled.
• Arrange for enough room around the pump for the movements of an operator.
• Arrange for free space above the pump for lifting it.
• Inform about the presence of aggressive uids with suitable colored labels in accordance with the
related standard.
• Do not install the pump (built with thermoplastic material) near heat sources.
• Do not install the pump in places with risk of falling objects or uids.
• Do not install the pump close to xed workplaces or visited areas.
• Install additional protection shield, for the pump or for the persons as appropriate. If the diaphragm
breaks the uid may enter into the pneumatic circuit and come out from the pump discharge port.
• Install a spare equivalent pump connected in parallel.
• The pump must always be electrically earthed.
• If the pump is made from conductive materials and is suitable for ammable products, each pump
casing must be equipped with a suitable ear thing cable: DANGER OF EXPLOSION AND/OR FIRE.
WARNING:
• The pumps must always be grounded irrespective of any other body to which it is connected. Lack of
grounding or incorrect grounding will void the safety requiremenents and protection against the
risk of explosion.
• The pump during operation is under PRESSURE, check appropriately for hazardous conditions.
6.4 START UP
• Check the correct execution of what is indicated in the INSTALLATION paragraph.
• Check that the intake and delivery pipes of the hydraulic circuit are correctly connected.
• Open the intake and delivery valves of the pump hydraulic pump circuit.
• Open the 3-way valve of the air circuit.
• Set the requested operation point requested for the pump: properly adjust the air pressure delivery
rate, with which the pump is supplied. With pressure values under 2 bar the pump may stall, with
pressure values above 7 bar it is possible that breakdowns and/or yields may occur with consequent
spillage of the pumped uid.
• For pumps with split manifold, the two pumped uids must have the same viscosity value, very
dierent viscosity values may lead to stall problems and/or Diaphragm breaking.
• Check that there are no anomalous vibrations or noise due to a too elastic support structure, unsui
table fastening or cavitation.
• Stop the pump correctly after 2 hours of operation and check the tightening of all the bolts on the
pump.
GB Operating Instructions Diaphragm Pumps

17
6.5 USE
• Do not operate valves or shunts during the pump operation.
• Risk of harmful water hammers in case of incorrect or sudden operations (valves must be operated
only by trained personnel).
• Accurately empty and wash accurately inside the pump in case dierent uids must be pumped.
• Insulate or empty the pump if the uid crystallization temperature is equal to or below the ambient
temperature.
• Stop the pump if the uid temperature exceeds the maximum allowed temperature indicated in the
GENERAL NOTES; if the exceeding temperature is about 20% it is necessary to inspect the status of
the internal parts.
• Stop the pump and close the valves in case of leaks.
• Wash with water only if chemical compatibility allows it; alternatively use a suitable solvent that does
not generate hazardous exothermic reactions.
• Consult the uid supplier to evaluate the most suitable re-prevention method.
• Empty the pump in case of long periods of non-operation (particularly with uids which have a
particular tendency to crystallize).
• Check that there is no gas in the delivering uid, if there is stop the pump.
6.6 STOP
To stop the pump, exclusively operate the air supply, which closes the 3-way valve, in this way dischar-
ging residual pressure from the pneumatic system of the pump.
WARNING:
• Never stop the pump by completely closing the suction and/or delivery valves of the hydraulic circuit.
• It is prohibited to stop the pump by means of completely closing valves in the suction and / or di
scharge of the hydraulic circuit.
7. MAINTENANCE
• All the operation must be carried out by qualied personnel.
• Do not carry out maintenance and/or repairs with the air circuit under pressure.
• Carry out periodic inspections (2 - 30 days in accordance with the uid pumped) to check the cleanli
ness of the ltering elements.
• Carry out periodic inspections (3 - 5 months in accordance with the uid pumped and with the envi
ronmental conditions) to ensure correct operation of the system's start/stop units.
• The presence of uid under the pump casing may indicate pump failures.
• Damaged parts must be replaced with complete original parts and not with repaired parts.
• The replacement of damaged parts must be carried out in a clean and dry environment.
7.1 RECOMMENDATIONS
WARNING: Before performing any maintenance or repair work on the pump, disconnect the pump
from the air supply line. Disconnect the hydraulic connections and discharge the product that is being
pumped.
Operating Instructions Diaphragm Pumps GB

18
• All operations must be carried out by qualied personnel.
• Use gloves, goggles and acid-resistant clothing when disconnecting from the system and washing
the pump.
• Wash the pump before carrying out maintenance operations.
• Do not disperse the washing waste into the environment.
7.2 DISASSEMBLY
• Bolts are right thread type.
• Clean all the external surfaces of the pump using a damp cloth.
• Ball seats removal (for all models).
• Remove the delivery and intake manifolds removing the tightening bolts.
• Pull o the seats, the balls and the related cages.
• Check the condition of the gasket.
Diaphragm removal
• Remove the delivery and intake manifolds removing the tightening bolts.
• Remove the deposits from the internal surfaces.
• Remove the two pump casings.
• Remove the plates that lock the Diaphragm.
• Remove the Diaphragm and the related backing plates.
• If it would be necessary to disassemble the shaft, remove one of the two Diaphragm on air side and
then pull o the shaft.
Pneumatic distributor removal
• Slip o the pneumatic exchanger cap and the spool (if necessary use a M6 screw in order to slip o
the spool).
Art. 19060
• Remove the manifolds, pump casing and Diaphragm.
• Remove the bolts (pos.22) and divide the semi-central casing.
Art. 19061 / Art. 19062
• Remove the Seeger ring of the transverse sleeve of the central casing
• Overturn the pump and with the aid of a Ø 6 mm punch and a press, pull o the distributor (this
operation may be carried out with pump casings assembled, check that the tightening bolts of the
pump casings located on the upper area of the distributor to do not obstruct removal of the distri
butor).
• WARNING: the pneumatic distributor shall not be opened to prevent an incorrect reassembling that
may cause the pump to malfunction.
GB Operating Instructions Diaphragm Pumps

19
7.3 INSPECTION
Check the absence of:
• Excessive abrasion of the thermoplastic parts.
• Clots and/or agglomerates due to the pumped uid.
• Deformations and/or surface lesions of the Diaphragm.
• Deformations and/or fractures on the valve seats.
Replace parts which are broken, cracked or deformed.
Reopen all clogged ducts and eliminate any chemical agglomerates.
Clean all surfaces before reassembly, particularly the OR gaskets seats (risk of leaks or dripping).
CLEANING AND REPLACING THE Diaphragm
• Control and internal cleaning every 500.000 cycles .
• Diaphragm check every 5.000.000 cycles.
• Diaphragm replacement every 20.000.000 cycles.
8. SAFETY RISKS
WARNING! CHEMICAL RISK. Pumps are intended for operation with dierent types of uids and che-
mical solutions. Follow the specic internal instructions for decontamination during the inspection or
maintenance operations.
WARNING! ELECTRICAL RISK. The pump must always be earthed independently to other elements
connected to it. Safety requirements and explosion risk prevention are not fullled if the pump is not
earthed or is incorrectly earthed.
WARNING:
• The Diaphragm (in contact with the product and external) are components subject to extreme wear.
Their duration is strongly aected by the conditions of use and by chemical and physical stresses. By
tests carried out on thousands of pumps installed with head value from 0° to 18°C, the ordinary life ex-
ceeds one hundred million cycles. For safety reasons, in environments with explosion risk it is necessa-
ry to disassemble and check the Diaphragm every ve million cycles and to replace them every twenty
million cycles.
• In the case of Diaphragm breaking completely, uid may enter into the pneumatic circuit, damage it
and come out through the discharge port. Therefore it is necessary to direct the air discharge up to a
safe area (using pipes).
• In situations where the user foresees the possibility of exceeding the temperature limits indicated
in this manual, it is necessary to install a protection device on the equipment that prevents to achieve
the maximum operating temperature allowed to be exceeded. If exceeded, respect to the maximum
marking temperature is not guaranteed.
REMEMBER! Safety risks to persons are mainly caused by improper use or accidental damage.
These risks may be caused by operators working on the open pump, or caused by the nature of the
uids that are conveyed by this type of pump. Therefore it is extremely important to diligently carry
out all the instructions contained in this manual in order to eliminate the causes of accidents that may
Operating Instructions Diaphragm Pumps GB

20
lead to the pump failure and to the subsequent spillage of that are harmful to persons and to the
environment.
For installation and use in a potentially explosive environment, comply with these general precau-
tions:
• Ascertain that the pump is full and if possible, that the uid level is above 0.5 m.
• Ascertain that the conveyed uid does not contain or cannot contain large solids or solids of a
dangerous shape.
• Ensure that the intake or delivery ports are not obstructed nor limited to avoid cavitation or
pneumatic motor strain.
• Also ascertain that the connection piping is strong enough and cannot be deformed by the pump
weight or by the intake. Also check that the pump is not burdened by the weight of the piping.
• If the pump is not used for a long period of time, clean it carefully by running a non-ammable liquid
detergent through it which is compatible with the pump’s construction materials.
• If the pump was turned o for a long period of time, circulate clean water in it for a couple of
minutes to avoid incrustations
• Before operation, after long periods of disuse, clean the internal and external surfaces with a damp
cloth, check the grounding ATEX ZONE.
• Always protect the pump against possible collisions caused by moving objects or by various blunt
materials that may damage it or react with its materials.
• Protect the pump’s surroundings ambient from splashes caused by accidental pump failure.
WARNING:
• The air supply pressure must never be over 7 bar or below 2 bar.
• When using the pump with aggressive or toxic liquids or with liquids that may represent a health ha-
zard you must install suitable protection on the pump to contain, collect and signal any spills: DANGER
OF POLLUTION, CONTAMINATIONS, INJURIES AND/OR DEATH.
• The pump must not be used with uids that are not compatible with its construction materials or in
a place containing incompatible uids.
CAUTION: It is prohibited to install the pumps without on-o valves on the intake and delivery sides
which intercept uids in case of spillage.
CAUTION: It is prohibited to install the pumps without on-o, three-way or check valves on the air
supply piping to prevent the pumped liquid from entering the pneumatic circuit if the diaphragms
are broken: danger of uid entering the compressed air circuit and being discharged into the environ-
ment.
WARNING:
• In situations where the user foresees the possibility of exceeding the temperature limits indicated
in this manual, it is necessary to install a protection device on the equipment that prevents to achieve
the maximum operating temperature allowed. If exceeded, respect to the maximum marking tempe-
rature is not guaranteed.
• The pumps must always be grounded irrespective of any organ to which it is connected. Lack of
grounding or incorrect grounding will cancel the requirements for safety and protection against the
risk of explosion.
•It is prohibited to use pumps made with non-conductive material, which can be statically char-
ged and that are not properly grounded for ammable liquids: RISK OF EXPLOSIONS DUE TO STATIC
CHARGE.
CAUTION: Aggressive, toxic or dangerous liquids may cause serious injuries or hazard to health, there-
fore it is prohibited to return a pump containing such products to the manufacturer or to a service
GB Operating Instructions Diaphragm Pumps