DROPSA 3420000 User manual

PISTON PUMP
3420000
Use and maintenance
manual
Original instructions
Manual drafted in compliance with Directive C2193IE –WK 11/18
CE 06/42
Dropsa products can be purchased at Dropsa branches and authorised distributors. Go
to www.dropsa.com/contact or write to [email protected]
CONTENTS
1. INTRODUCTION
2. GENERAL DESCRIPTION
3. IDENTIFYING THE MACHINE
4. TECHNICAL FEATURES
5. PUMP COMPONENTS
6. UNPACKING AND INSTALLATION OF THE PUMP
7. OPERATING INSTRUCTIONS
8. PROBLEMS AND SOLUTIONS
9. MAINTENANCE PROCEDURES
10. DISPOSAL
11. ORDER INFORMATION
12. SPACE REQUIREMENTS
13. TRANSFER AND TRANSPORTATION
14. PRECAUTIONS FOR USE
15. OPERATING INDICATIONS

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1. INTRODUCTION
This operating and maintenance manual refers to the 3420000 piston pump
The most recent version can be obtained by requesting it from the Sales Technical Office or online at http://www.dropsa.com.
This operation and maintenance manual contains important information for the health and safety protection of the personnel
who intends to use this equipment.
This manual must be read carefully and kept so that it is always available to the operators who want to consult it.
2. GENERAL DESCRIPTION
The 3420000 piston pump is particularly suited for applications that require single-point lubrication such a reducers, guides,
chains, etc. It can also be used in applications that require maintenance of constant pressure lubrication.
The 3420000 is a piston pump with inverse operation or when the piston is operated, suction during the pressurization phase is
secured by a spring located inside of the cylinder.
The pumping operation is performed by means of a cam or by another device making up part of the machine, on which the
pump is installed. Therefore, it is important that installation is performed in such a way that the course of planned project
operation is respected with regard to function.
3. IDENTIFYING THE MACHINE
On the front of the pump, there is a yellow label, on which the product code and its basic features are shown.

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4. TECHNICAL FEATURES
Please note: The following characteristics refers to an operating temperature of +20°C (+68 °F)
* If a different product is used, you must ask Dropsa S.p.A. if it is suitable for use.
5. MACHINE COMPONENTS
6. UNPACKING AND INSTALLATION
6.1 UNPACKING
Once the suitable location for installation has been identified, open the packing and remove the pump. Ensure that no damage
occurred during transport and storage. The packaging material does not have any special precautions for disposal, as it is not in
any way dangerous or polluting. For disposal, refer to local regulations.
GENERAL SPECIFICATIONS
Empty weight
0.5 Kg
TECHNICAL FEATURES
Operating Type
Cam
Pumping system
Piston
Max. operating pressures
3 bar
Flow rate
7 cc/stroke
Length
min 10 mm
No. pumping cycles, max. x min.
5 strokes/min
Inlet connection
Hose Ø6
Outlet connection
Hose Ø4
Operating temperature
+ 5 + 40C
Permitted lubricants
Mineral oil lubricant, min. 32 cSt/ max
220 cSt
Max operating force
300 N
Storage temperature
-20+65°C
PUMP COMPONENTS
1
Air suction
2
Oil suction
3
Oil delivery
4
Command rod
1
4
HYDRAULIC DIAGRAM
2
3

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6.2 INSTALLATION
There is no assembly required for the pump.
Provide adequate space for installation, leaving a minimum clearance space of 100 mm (3.93 in.),
For mounting to wally, it is necessary to provide adequate space (as is indicated by the installation diagram). Subsequently, it is
necessary to hydraulically connect the pump. During the disassembly phase, disconnect the hydraulic part.
7. OPERATING INSTRUCTIONS
7.1 PRELIMINARY OPERATIONS
-Check the integrity of the pump. (The unit can be opened and repaired only by specialized personnel.)
-Ensure that the hydraulic connection has been carried out correctly.
-Use lubricant that is free of impurities.
7.2 PUMP USE
The pump is mechanically operated by reciprocating action of the machine. It is important that the operating system allows for
the technical specifications of the project to be adhered to (stroke length, max. number of pumping cycles, etc.). The pump has
a reverse function where the piston is pressed, it goes into suction mode, while, when it is released, the oil is delivered for use.
We recommend carrying out a few cycles to bleed the air from the system.
Using the pump submerged in fluids or in a particularly aggressive or explosive/flammable environment is prohibited
unless it has been prepared ahead of time by the supplier for this purpose.
Wear gloves and eye protection as required by the oil lubricant safety data sheet.
DO NOT use aggressive lubricants for NBR gaskets; in the case of doubt, contact the technical office.
Never ignore health hazards and always follow sanitary regulations.
8. PROBLEMS AND SOLUTIONS
FAULT
CAUSE
SOLUTION
The pump does not dispense
the exact prescribed quantity
The pump sucks air because the
reservoir* is empty
Fill the reservoir* and bleed the system air
The fittings are loose
Carefully tighten all the fittings, ensuring that
there are no leaks
The pump does not dispense oil
at the prescribed pressure.
Damaged pump
Replace the pump
The pump does not dispense
and only weakly sucks oil from
the reservoir.
The check valve during suction can be
dry after long periods of non-use.
Remove the suction fitting and allow a few drops
of oil fall onto the 90° valvular fitting. During the
first pumping cycles, the suction phase is forced,
making it prolonged compared to the release
phase, thereby allowing the pump to come under
pressure and fill the suction hose faster.
* The reservoir is not included within the scope of supply.
9. MAINTENANCE PROCEDURES
The pump has been designed and built in a way to require minimum maintenance.
In order to simplify maintenance, we recommend installing it in a position that is easy to reach.Periodically check the joints of
the pipes and always keep clean the pump for leakage or faults.
The machine does not require special tools for any check and/or maintenance operations. It s recommended to use suitable
equipment and personal protective equipment (gloves) that are in good condition in accordance with applicable regulations to
avoid injury to people or damage parts of the pump.
In the event of doubts and/or irresolvable problems, do not search for the fault by disassembling parts of the machine, but
rather contact the Dropsa Technical Office S.p.A.
ATTENTION: Ensure that the hydraulic power supply is disconnected before carrying out any maintenance operations.

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10. DISPOSAL
During maintenance on the machine, or in the event of its demolition, do not dispose of contaminated parts into the
environment. See local regulations for their correct disposal. Upon demolition of the machine, the identification label and any
other document must be destroyed.
11. ORDER INFORMATION
11.1 STANDARD VERSIONS
11.2 SPARE PARTS
12. SPACE REQUIREMENTS
ITEM
Flow rate
PART NUMBER
PISTON PUMP
7 cc/stroke
3420000
ITEM
PART NUMBER
CHECK VALVE AND FITTING Ø6 1/8” BSP [suction]
0094136 + 0092014 + 0093006
CHECK VALVE 5/16 –24 NF and fitting Ø4 [delivery]
1111000 + 0093004 + 0094007 + 0911005

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13. TRANSFER AND TRANSPORTATION
Before shipment, the pumps are carefully packed inside a cardboard box. During transport and storage of the equipment, pay
attention to the direction indicated on the box. On receipt, check that the packing is not damaged and store the equipment in a
dry place.
14. PRECAUTIONS FOR USE
The warnings on risks using a lubricant pump implies must be carefully read.
The operator must be familiar with the functionality and clearly understand the dangers connected with pumping greases under
pressure. We therefore recommend:
Checking the chemical compatibility of the pump construction materials with the fluid that you intend to pump (see the table
at the end of Section 14). An incorrect choice could cause, in addition to damage to the pumps and the lines, serious risk to
personnel (leaking of products that are irritants and harmful to the health) and to the environment.
Use only original spare parts.
If you must replace components with others, ensure that they are suitable to function at the pump's maximum operating
pressure.
Note: Personnel must use protection equipment, clothing and tools that comply with the prevailing regulations in relation to the
location and the use of the pump both during operation and maintenance.
Flammability
The lubricant used in the lubrication circuits is a fluid that is not normally flammable. In any case, all possible measures must be
taken to prevent it coming into contact with very hot parts or naked flames.
Pressure
Before any operation, check for the absence of any residual pressure in all branches of the lubricant circuit, that could cause
spurts of oil in the event that fittings or components are disassembled. After long periods of inactivity, check the seal on all the
parts subject to pressure. Do not subject the fittings, pipes and the parts under pressure to violent impact. A damaged hose or
fitting is DANGEROUS. Replace it. We recommend using only original spare parts.
15. OPERATING INDICATIONS
The pumps do not have particular contraindications except for the following points:
Operator contact with lubricant via ruptured/open pipes or during reservoir maintenance/filling procedures. Protection
against direct and indirect contact with the fluid must be provided by the user: The operator must be equipped with
appropriate PPE (ClassVIII –626).
Use of unsuitable lubricant. Main prohibited fluids:
Fluid
Hazard
Lubricants with abrasive additives
High wear of the contaminated parts
Lubricants with silicon additives
Seizing of the pump
Petrol –solvents –flammable liquids
Fire –explosion –damage to gaskets
Corrosive substances
Corrosion of the pump –damage to personnel
Food substances
Contamination of the same
Lift the equipment bearing in mind the direction indicated on the box.
The components of the pump can withstand temperatures during storage from -20°C to + 65°C. However, in order to prevent
damage, use must take place when the pump has reached a temperature of +5 °C.
ATTENTION: Never try to stop or deviate any leaks with your hands or other parts of the body.
ATTENTION: The warnings on risks using a lubricant pump implies must be carefully read. The user must be familiar with
operation through the Operation and Maintenance Manual.
NOTE:
The pump is designed to work with maximum 220 cST grade lubricants. Use NBR-seal compatible lubricants. The lubricant
used for assembling and testing possibly remaining inside is 32 cSt oil.