DROPSA 31070 Series Operation instructions

Hydraulically driven pump
Series 31070
User Operating and
Maintenance Manual
Original text translation
Warranty Information
CONTENT
0.0 INTRODUCTION
1.0 DESCRIPTION OF THE PUMP
2.0 TECHNICAL SPECIFICATIONS
3.0 CORRECT USE
4.0 DIMENSIONS
5.0 DECLARATION OF CONFORMITY
6.0 DISTRIBUTORS
The manual has been prepared in compliance with Directive C2004IE - WK 28/11
EC 06/42
http://www.dropsa.com

2 of 10
0.0 INTRODUCTION AND WARNING
This user’s and maintenance manual refers to a series 31070 hydraulically driven pump –with light alloy or sheet
steel tank, for use in mineral oil lubrication systems.
It is recommended that this manual is carefully kept in good condition and is always available to persons requiring
to consult it.
To request further copies, updates or clarifications with respect to this manual contact the Engineering Department
at Dropsa SpA.
The use of the pump referred to in this manual must be entrusted to qualified personnel with a knowledge of
hydraulics and electrical systems; the non-observance of the information given in this manual or the improper use
of the equipment by non-qualified or non-authorised personnel can put persons or the environment at risk due to
the escape of fluids under pressure.
It is of extreme importance that the instructions for use are read and understood both by the operators and
maintenance personnel, in cases of doubt please contact the area representative or our “Customer Service”
department.
The manufacturer reserves the right to update the product and/or the user’s manual without the obligation to
revise previous versions. It is however, possible to contact the Engineering Department for the latest revision in
use.
It is the responsibility of the installer to utilise tubing suitable for the system; the use of unsuitable tubing can
generate problems with the pump, risks to persons and cause pollution.
The loosening of connections can cause serious safety problems and all such connections should be checked before
and after installation and tightened if necessary.
Never exceed the maximum operating pressure values allowed for the pump and the components to which it is
connected.
Before any maintenance or cleaning operations, close off the air supply and release the pressure from the pump
and the tubing to which it is connected.
Do not subject the pump, the tubing or other parts under pressure to violent impacts; damaged tubing or
connections are dangerous and should be replaced.
After prolonged periods of inactivity, ensure the tightness of all connections subjected to pressure.
It is required that personnel make use of protection devices, clothing and necessary tools, suitable to the place and
employment of the pump both while in operation and during the undertaking of maintenance tasks.
The pump, and any accessories mounted on it, should be carefully checked immediately on receipt and in the event
of any discrepancy or complaint the Dropsa SpA Sales Department should be contacted without delay.
DROPSA S.p.A. declines to accept any responsibility for injuries to persons or damage to property in the event of
the non-observance of the information presented in this manual.
Any modification to component parts of the system or the different destination of use of this system or its parts
without prior written authorisation from DROPSA S.p.A. will absolve the latter from any responsibility for injury or
damage to persons and/or property and will release them from all obligations arising from the guarantee.
The list of distributors and detailed instructions for ordering are given in Section 4.

3 of 10
1.0 DESCRIPTION OF THE PUMP
The pump is of robust construction, with a high strength light
alloy cast body, or a sheet steel body, and a lapped steel
piston.
The pump unit is made up of a cylinder in which operates a
piston with an oilproof seal; a spring returns the piston to its
start position.
The pump must be provided with a three way electrical or
mechanical distribution device, that is:
line-cylinder-discharge.
The duration of the command impulse must not be less than 3
seconds.
The release (in the discharge position) must not be less than
10 seconds.
The useful capacity means the sum of the values of the applied
valves.
The expansion of flexible tubing utilised in the system will reduce the useful capacity.
Versions available with characteristics
Part
number
pressure
c.c./stroke
tank
syst.
ratio
min. level
weight
dimensions
min
max
useful
max
litres
electric
Kg
lxdxh (mm.)
3107000
15
30
7.5
15
0.4
06
1/1
no
1.54
84x95x210
3107001
15
30
7.5
15
0.8
06
1/1
no
1.78
117x105x210
3107002
15
30
15
30
1.5
06
1/1
no
2.95
124x123x294
3107006
40
80
3.5
7.5
0.8
06
1/2
no
2
117x110x250
3107006
60
150
3.5
7.5
0.8
04
1/2
no
2
117x110x250
3107010
40
80
3.5
7.5
0.8
26
1/2.2
no
2
117x110x250
3107010
60
150
3.5
7.5
0.8
26
1/2.2
no
2
117x110x250
3107013
60
150
3.5
7.5
6
06
1/2.2
yes
9
327x168x240
3107016
15
30
7.5
15
6
04
1/1
no
10
327x181x261
3107021
15
30
15
30
1.5
06
1/1
no
3.5
115x118x285
1.1 Accessories and replacement parts
Accessories as per specific request.
Replacement parts:
MODEL
3107000
3107001
3107002
310006
3107010
3107013
3107016
3107021
Filter -load
3130049
Filter - suction
3130062
3130137
3130137
3130137
3130137
3130052
3130052
3130137

4 of 10
2.0 TECHNICAL SPECIFICATIONS
2.1 Methods of commanding the pump
2.2 Other data
Viscosity of the lubricant at working temperature
Between 115 - 2000 cSt
Working temperature
+ 5 - + 50 C
Working humidity
90 % relative humidity.
Preservation temperature
- 20 - + 50 °C
Sound pressure level
< 70 dB(A)
Manual push-button control
Discharge
Supply
3-way solenoid valve control
Discharge
Supply
Mechanical roller cam or cam bar
control
Discharge
Supply

5 of 10
3.0 CORRECT USE
3.1 Putting into service
The unit may be used, opened and repaired only by specialised personnel;
The pump MUST NOT be submersed in fluids or utilised in environments which are particularly aggressive or
explosive/inflammable if not prepared for this purpose beforehand by the supplier;
For correct fixing verify the distance between centres shown in the diagram in Section 2
Use gloves and safety glasses as required in the lubrication oil safety chart;
DO NOT use aggressive lubricants with NBR gaskets and seals; if in doubt consult the Engineering Department
of Dropsa SpA, who will provide a chart with the details of recommended oils;
DO NOT ignore dangers to health and observe all hygiene standards;
WARNING! All electrical components must be grounded. This refers to both electrical components and control
devices. In this regard ensure that the ground cable is correctly connected. For reasons of safety the ground
cable must be approx. 100 mm longer than the phase cables. In the event of accidental detachment of the
cable, the ground terminal must be the last to be removed.
action to be taken prior to start up
Verify the integrity of the pump;
Fill the tank with suitable lubricant (min/max indication on the tank);
Verify that the pump is at operating temperature and the tubing free from air bubbles;
Check that the electrical connections have been effected correctly (CEI 64/8, IEC 364);
Verify the correct connections of any level and pressure switches to the control panel;
The minimum level indicator is supplied, unless otherwise specified by the customer, with the contact closed
for minimum level. Should the user require to use a normally open contact it will be necessary to open the
tank and to invert the operating direction of the float.
3.2 Use
1. verify the settings on the control panel, where fitted;
2. press the start button of the machine to which the pump is connected;
3. verify the starting of the pump;
4. verify the adequate lubrication of the machine (if doubt exists as to the correct functioning consult the
Engineering Department of Dropsa SpA to request test procedures).
3.3 Transport and storage
Transport and storage is effected in a cardboard package
No particular precautions are required except as noted on the package itself.
Handling can be effected by one person.
!Lift the unit with taking account of the right way up indicated on the cardboard carton
!The machine components can withstand temperatures, during storage, from -20 to +50°C; however, in
order to avoid damage, starting of the machine should occur at a minimum temperature of -5°C.
3.4 Assembly/Disassembly
No pump assembly operations are envisaged.
For wall mounting ensure adequate space is available (as shown in the installation diagram) to avoid abnormal
postures and possible impacts; four fixing holes are provided with different characteristics depending on the
version (see section 2.2)
Subsequently it will be necessary, as previously described, to connect the pump to the machine hydraulically and
then to connect the control panel.
During the disassembly phase ensure the tank is empty.

6 of 10
Disconnect the electrical and hydraulic parts.
Where the machine is to be scrapped, do not dispose of potentially polluting parts in the environment, following
local regulations for their correct disposal.
At the time of the machine being scrapped it is necessary to remove and destroy the identification plate and all
other relative documents.
3.5 Regulation
The only parameter which can be modified is the pressure; to modify the value increase or decrease the pressure
of the command fluid.
3.6 Maintenance
!Locate the machine in conditions which facilitate easy access.
Utilise individual protection to avoid contact with mineral oil or grease
Having undergone rigorous testing by ourselves, the pump does not require any further maintenance. The use of
lubricants free from impurities is recommended and the periodic careful cleaning of the component parts of the
pump.
Disassembly must be effected in the following manner:
1. disconnect the tubing attached to the pump.
2. remove the fixing screws and the tank and relative cover.
3. remove the suction filter and the relative valve.
4. unscrew the cylinder paying particular attention to the loading of the springs; the component parts of the
pump unit can then be disassembled.
5. remove the screws which retain the flange so releasing the complete pump unit.
In this way all component parts of the pump unit can be removed allowing the disassembly and cleaning of the
release and suction valves.
All pieces should be washed in petrol and lubricated prior to reassembly.
The following should be checked periodically:
VERIFY
WORK CYCLES
The state of lubrication
100
The oil level
200
The cleanliness of the suction filter
400
That the tank is clean and the bottom free from deposits
600
The machine does not require any special tools to carry out checks or maintenance tasks, However, it is
recommended that only tools suitable for the tasks and in good condition should be utilised (DPR 547/55) to avoid
injury to persons or damage to machine parts.
3.7 Repairs
The following diagnostic table indicates the main anomalies which may be encountered, the probable causes and
possible solutions.
The anomalies shown are:
the pump fails to deliver sufficient oil or no oil at all;
the pump fails to deliver oil at the prescribed pressure;
failure to release line pressure (only on systems with volumetric valves).
In case of doubts and/or problems which cannot be resolved do not attempt to disassemble parts of the machine
but contact the Engineering Department of DROPSA S.p.A.

7 of 10
INDICATION
PROBABLE CAUSE
REMEDY
The pump does not deliver oil or
does not deliver oil in the exact
quantity prescribed
The pump does not deliver oil at
the prescribed pressure
The oil in the tank is below the
minimum level
The suction filter is dirty or
blocked
The pump control valve fails to
discharge
The internal connections are
loose
The command fluid pressure is
insufficient
Fill the tank with oil without
exceeding the MAX level line
Open the cover of the pump,
remove the suction filter and
clean it
Check that the pump control
valve is a 3-way type and that
the valve regularly discharges
fluid from the pump chamber
when the supply is cut off.
Remove the plate from the tank
and carefully tighten all
connections ensuring there are
no leaks
Increase the pressure on the
command fluid to reach the
required oil pressure value
3.8 Dangers present in use
The verification of conformity with the essential safety requirements and regulations of the Machine Directive is
effected by means of the compilation of a check list which has been pre-prepared and is contained in the technical
file.
The lists which are utilised are of three types:
list of dangers (as in EN 414 referring to EN 292)
application of essential safety requirements (Machine Dir.)
electrical safety requirements (EN 60204-1)
The following is a list of dangers which have not been fully eliminated but which are considered acceptable:
in the version of the pump without a release it is possible to encounter squirts of oil (for this reason
appropriate protective clothing must be worn)
contact with oil -> see the requirements for the use of suitable personal protective clothing
use of unsuitable lubricant -> the characteristics of the fluid are shown on the pump and in the manual
(in case of doubt contact the Eng. Dept of Dropsa Spa)
protection against direct and indirect contact must be provided by the user
given the purpose of the pump it must always be functioning; for this reason it is necessary to pay
attention to the electrical connections which, in the case of a power failure, the customer’s machine is
restarted only by means of a reset, while the lubrication pump is able to restart
INADMISSIBLE FLUIDS
Fluids
Fluids
Lubricants with abrasive additives
Lubricants with abrasive additives
Lubricants with silicone based additives
Lubricants with silicone based additives
Petrol –solvents –inflammable liquids
Petrol –solvents –inflammable liquids
Corrosive products
Corrosive products
Water
Water
Food substances
Food substances

8 of 10
4.0 Dimensions
Model
A
B
C
D
E
F
G
H
I
3107000
63
110
44
60
12
M10x1
M10x1
85
210
3107001
73
90
54
93
12
M10x1
M10x1
62
210
3107002
79
170
54
100
12
M14x1,5
M14x1,5
132
294
3107006
110
90
54
93
12
M10x1
M10x1
62
250
3107010
110
90
54
93
12
M10x1
M10x1
62
250
3107021
77
170
54
100
7,5
M14x1
M14x1,5
285
Model
A
B
C
D
E
310701
3
305
240
205
327
168
310701
6
305
261
205
327
181
4 x M6
screws

9 of 10
5. DECLARATION OF CONFORMITY
Dropsa Spa
Via Benedetto Croce, 1
20090 Vimodrone (MI)
Italy
Tel.:
Fax Sales:
E-mail:
Web site:
(+39) 02. 250.79.1
(+39) 02. 250.79.767
[email protected]
http://www.dropsa.com
DICHIARAZIONE DI CONFORMITÁ/DECLARATION OF COMPLIANCE WITH STANDARDS/
DECLARATION DE CONFORMITE/ KONFORMITÄTSERKLÄRUNG DES STANDARDS /DECLARACIÓN DE
CONFORMIDAD/ DECLARAÇÃO DE CONFORMIDADE
La società Dropsa S.p.A., con sede legale in Milano, Via Besana,5/ Dropsa S.p.A., registered office in Milan, Via
Besana,5 / Dropsa S.p.A. au Siège Social à Milan, Via Besana,5/ Dropsa S.p.A., Sitz in Milano, Via Besana 5/ La
sociedad Dropsa S.p.a., con sede legal en Milán, Via Besana,5/ A Dropsa S.p.A, com sede em Milão, via Besana, nº 5
DICHIARA /CERTIFIES / CERTIFIE/ ZERTIFIZIERT, DASS/ DECLARA/ CERTIFICA:
che la macchina denominate/that the machine named / que la machine dénommée/ Die Maschine mit der
Bezeichnung/ que la máquina denominada/ que o equipamento denominado
SERIES 31070 HYDRAULICALLY DRIVEN PUMP
è conforme alle condizioni previste dalle Direttive CEE /has been constructed in conformity with the Directives Of
The Council Of The European Community on the standardization of the legislations of member states/ a été
construite en conformité avec les Directives Du Conseil Des Communautes Europeennes/ Entsprechend den
Richtlinien des Rates Der Europäischen Union, für die Standarisierung der Legislative der Mitgliederstaaten,
konstruiert wurde/ cumple con las condiciones establecidas por las directivas comunitarias/ foi construído em
conformidade com as diretivas do Conselho das Comunidades Europeias:
2006/42 Direttiva macchine /Machinery Directive / 2006/42 Directive machines / Maschinenrichtlinien/
Maquinaria 2006/42/CEE /Directiva 2006/42 Máquinas;
Vimodrone (MI), July 2011 Technical Director:
Maurizio Greco
…………………………
Legal representative
Milena Gavazzi
…………………………

10 of 10
6. DISTRIBUTORS
Web site: http://www.dropsa.com - E-mail: [email protected]
Dropsa S.p.A.
Via B. Croce,1
20090 Vimodrone (MI) Italy.
Tel: (+39) 02 - 250.79.1
Fax: (+39) 02 - 250.79.767
E-mail: [email protected] (Export)
E-mail: [email protected] (National)
Dropsa Ame
23, Av.des.Morillons
Z.I. des Doucettes 91140
Garges Les Gonesse, France
Tel: [phone]
Fax: [phone]
E-mail: [email protected]
Dropsa (UK) Ltd
Unit 6, Egham Business Village,
Egham,Surrey,TW20 8RB
Tel: [phone] - 431177
Fax: [phone] - 438598
E-mail: [email protected]
Dropsa do Brazil Ind. E Com.
Ltda
Rua Sobralia 175,
Sao Paulo, Brazil
Tel: [phone]
Fax: [phone]
E-mail: [email protected]
Dropsa USA Inc.
6645 Burroughs Ave
48314-2132 Srerling Hts,Mi Us -USA
Tel: [phone]
Fax: [phone]
E-mail: [email protected]
Dropsa Lubrication Systems
Nr 8 Dongxing Road,
Songjiang Industrial Zone
(Shanghai) Co., Ltd
Tel: [phone]
Fax: [phone]
E-mail: [email protected]
Dropsa Gmbh
Volmerswerther Strasse 80
40221 Dusseldorf 1, Deutschland
Tel: [phone]
Fax:[phone]
E-mail: [email protected]
Dropsa Australia Pty.
C20/148 Old Pittwater Road
Brookvale, NSW 2100
Tel: [phone]
Fax: [phone]
E-mail: [email protected]