DROPSA MiQueL EXT Operating instructions

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Summary
1. INTRODUCTION ............................................................................................................................. 2
2. GENERAL DESCRIPTION ................................................................................................................. 2
3. MACHINE IDENTIFICATION ............................................................................................................ 3
4. TECHNICAL SPECIFICATIONS .......................................................................................................... 3
5. MACHINE COMPONENTS ............................................................................................................... 4
6. UNPACKING AND INSTALLATION ................................................................................................... 7
6.1UNPACKING.........................................................................................................................................7
6.2INSTALLATION......................................................................................................................................7
6.3PNEUMATICCONNECTIONS..................................................................................................................7
6.5AIR/OILHYDRAULICCONNECTIONSTOTHELUBRICATIONNOZZLE.......................................................8
7. INSTRUCTIONS FOR USE ................................................................................................................ 9
8. PROBLEMS AND SOLUTIONS........................................................................................................ 10
9. MAINTENANCE PROCEDURES ...................................................................................................... 10
10. DISPOSAL................................................................................................................................... 10
11. INFORMAZIONI D’ORDINE ......................................................................................................... 11
9.1 ACCESSORIES AND SPARE PARTS ............................................................................................... 12
12. DIMENSIONS ............................................................................................................................. 13
13. HANDLING AND TRANSPORT ..................................................................................................... 14
14. PRECAUTIONS FOR USE ............................................................................................................. 14
15. GUIDELINES FOR USE ................................................................................................................. 15

2
1.INTRODUCTION
This user and maintenance manual relates to the MiQueL EXT.
Using this pump means that oils and greases can be distributed within lubrication systems even at high pressures of up to
400 bar (5880 psi).
The latest version may be obtained from the Technical-Commercial Office, or by consulting our web site
http://www.dropsa.com.
The pump subject of this manual must be used by qualified personnel with basic hydraulic and electrical knowledge.
This user and maintenance manual contains important information about protecting the health and safety of the
personnel who intend to use this apparatus. You must read and look after it carefully, making sure that it is available at all
times for the operators who intend to consult it.
2.GENERALDESCRIPTION
Il MiQueLEXT è un sistema modulare aria/olio disponibile in 3 versioni:
- PRO: modulo compreso di valvola di compensazione
- BASE: modulo senza valvola di compensazione
- CART: modulo senza valvola di compensazione, senza regolazione olio e a portata fissa.
Tutte le versioni possono essere munite si elettrovalvola per il controllo indipendente del singolo modulo, VERSIONI “-i ”.
Operation
The system consists of a pressurised lubricant tank, one or more mixture regulation modules, pipes and spray nozzles (see
hydraulic diagram below).
The lubricant is sent to mixing valve through an external pump or a pressurised reservoir.
Each module has oil and air (NO CART version) check valves that are controlled manually by the operator. The
outward oil and air flow can be managed independently between the different modules using a mini solenoid valve (“-
i”version only) that activates the control valves on the module. The module has a compensation valve (“PRO”
version only) is able to keep the flow rate constant as the inlet tank pressure and outlet counter-pressure varies.
The lubrication pipes can be traditional or coaxial. In the latter case, the lubricant and nebulisation air are transported
separately to the nozzle. The piston keeps the oil from dripping from the nozzle when the lubrication operation is
complete.
Hydraulicdiagram
Serbatoio pressurizzato
(
O
p
tional
)
1
2
3
4
5
5
6
7

3
Spraynozzles
When traditional pipes are used, the air and oil are already mixed when they arrive at the nozzle.
If coaxial pipes are used, the nozzle mixes the air and oil at the point to be lubricated. The lubricant is atomised in
minuscule particles by the air flow that passes in front of the oil outlet hole.
The geometry of the nozzle is designed based on the type of spray to be obtained (conic, blade-shaped, etc.).
Advantages
Easy to install on the machine
Reduction in tool wear
Improved surface finish on the part
No lubricant residuals left on the part when the work is complete
The nozzles do not drip after being turned off
Large spray range (up to 300 mm)
Greater safety and environmental hygiene at the workplace
Application
Machine tools
Machines for cutting and bending plate
Steelworks
3.MACHINEIDENTIFICATION
There is a plate on the side of the unit that displays the product code, the power supply voltages and the basic
characteristics.
4.TECHNICALSPECIFICATIONS

TECHNICAL SPECIFICATIONS
Pumping system External pump
Maximum number of modules 8
Maximum Oil inlet pressure 2,5:1 in relation with air inlet pressure
Air inlet pressure 4bar ÷ 7bar [87psi ÷ 101,5psi]
Maximum air consumption at the outlet ~50Nl/min (per module)
Air inlet pipe
Ø
8mm
Oil inlet pipe Ø6mm
Air outlet pipe Ø6mm
Oil outlet pipe Ø3mm
Oil flow rate per element
PRO
0,1 ÷ 2,7 cc/min (Oil 10cSt)
0 ÷ 1 cc/min (Oil 32cSt)
0 ÷ 0,2 cc/min (Oil 100cSt)
BASE
0,3 ÷ 8 cc/min (Oil 10cSt)
0,1 ÷ 3 cc/min (Oil 32cSt)
0 ÷ 0,6 cc/min (Oil 100cSt)
CART
cc/min = (P x 8,16)/
V
P = Operating pressure in [bar]
V = viscosity [Engler] at operating temperature
Lubricant 10cSt ÷ 100cSt
Protection grade of module “-i”Standard IP 0
0
On request (special) IP 65
Element solenoid valve power supply 24Vd
c
Operating temperature +5°C ÷ +50°
C
Storage temperature -10°C ÷ +80°
C
Max relative humidity without operating condensate 90%
Sound level pressure < 70 db (A)


Uscit
e
5.MAC
H
MODULAR






MiQueLP
R
Pus
h
Pressure g
a
(
o
p
tio
P
u
Modu
l
e
elementi m
o
H
INECO
M
ELEMENT
R
O‐iEXTM
o
h
-in pipe Ø6
air outlet
a
uge
nal
)
A
ir r
e
u
sh-in pipe Ø3
oil outle
t
l
ar element o
u
o
dulari
M
PONE
N
o
dule
e
gulation
t
u
tlets
N
TS
Mounting scre


































ws
Solen
o
(“ ‐ i”
v
A
Oi
Com
(“PR
O
Oilregul
a
(NO CA
R
o
id valve
v
ersion only)
A
ir inlet
i
linlet
pensation va
l
O
” versiononly)
a
tion
RT
version)
4
l
ve


Assembly
s

Finalclosure
screws
s
ystem/in
c
End cover
c
reasingm
o
o
dularele
m
Fixing intermidia set
screw


m
ents
Screw assembl
y
modules
y
Modular element
5
Startingelement

6
PressurizedreservoirforMiQueLEXT(optional)
3ltReservoir
Pressure switch
(optional)
Pressure
gauge
Air inlet
Visibleleve
l
Reservoir
Mountingbrackets
1ltReservoir
Oil Outlet
Air inlet
Loadingcap
TECHNICAL SPECIFICATIONS
Reservoir capacity 1lt – 3lt
Air inlet pressure 4bar ÷ 7bar [87psi ÷ 101,5psi]
Air inlet pipe Ø6mm
Oil outlet thread G1/8” – UNI ISO 228/1
Air outlet thread (plugged) G1/8” – UNI ISO 228/1
Protection grade IP 65
Pressure switch calibration (optional) 6bar [87psi]
Maximum pressure switch load
(optional)
Voltage free contact maximum
voltage 250V
Maximum power 100W
Maximum electric level load 0,2A @ 30V

7
6.UNPACKINGANDINSTALLATION
6.1UNPACKING
Once the suitable location for installation has been identified, open the package and remove the unit.
Check that it was not damaged during transport or storage.
The packaging material does not require special disposal precautions as it is not in any way dangerous or polluting.
6.2INSTALLATION
Allow a sufficient amount of space for installation, leaving a minimum perimeter space of 100 mm (3,93 in.).
Install the unit at “shoulder height” to prevent abnormal positions or the possibility of impacts.
Use the brackets with the holes (see chap. 12) to fix the unit properly. It is also possible to disassemble the brackets from
their current position and reassemble them in the prepared threaded holes for side or corner installation.
It is prohibited to use the unit if submersed in fluids or in a particularly aggressive or explosive/inflammable environment
if not previously prepared for that purpose by the supplier.
Use safety gloves or glasses as specified in the safety sheet for the lubricant.
Do not use aggressive lubricants with NBR gaskets. In the case of doubt, contact the DropsaSpA technical office to receive
a detailed card about the recommended oils.
Do not ignore the hazards to health and comply with the health regulations Ø8mm.
6.3PNEUMATICCONNECTIONS
Before making the connection, check that the valve for the main air, the manual sliding valve and the check valves (air and
oil) are closed. Make sure that the inlet pressure does not exceed 7bar.
Use fittings and pipes that are suitable for the operating pressures, push-in connection for Ø10mm pipe.

6.4ELECTRICCONNECTIONS
Connectthe unitto the pumpor to the pressurized reservoirusingsuitablepipingfor the working pressure that must notbe
greater than2.5 timesthe air pressure (es.: air 6bar [87psi] – oil 15bar [217,5psi] max.).
Connect the (optional) “NO” pressure switch, precalibrated to 6 bar, by passing the cables from the protective cover
using a 6.3 mm faston.
ATTENTION:Alwaysinstallaregulatorfilterwithcondensaterecoveryontheairinlet.Anyunfiltered
depositsorsedimentscouldirreparablydamagetheproduct.

6.5AIR/OI
L
Using coaxial
the Ø3mm t
u
Then connec
t
1. Insert th
e
2. Remove
approx.
2
3. Insert th
e
4. Replace
t
To make it e
a
unscrew the
Ø
Ø3 pipe.
L
HYDRAU
L
pipes, conne
c
u
be until conn
t
the same co
a
e
Ø6 air pipe
i
the nozzle h
e
2
0/25mm.
e
Ø3 oil pipe
i
t
he nozzle he
a
a
sier to remo
v
Ø
6 push-in, i
n
A
O
L
ICCONNE
C
c
t the Ø3mm
ect it to the
a
a
xial pipes to
i
n the push-i
n
e
ad from the
i
n the push-in
a
d on the arti
v
e the pipes
e
n
sert the devi
c
A
IR
O
IL
C
TIONSTO
T
pipe  to th
a
ir outlet pus
h
the lubricati
o
n
on the nozzl
e
articulated
p
on the nozzl
e
culated pipe.
e
xiting the m
o
c
e in the Ø3
p
2
T
HELUBRI
C
e oil outlet p
u
h
-in  .
o
n nozzle pus
h
e
connection.
p
ipe, through
e
head.
o
dule, use the
p
ipe, push the
4
C
ATIONNO
Z
u
sh-in  on t
h
h
-in as shown
which the Ø
device to re
m
device on th
e
3
Z
ZLE
h
e module, sl
below:
3 oil tube sh
o
m
ove Ø3 tub
e
e
collar of th
e
1
3
ide the Ø6m
m
o
uld pass, m
a
e
(code 15254
e
Ø3 push-in,
p
AIR
AIR
OIL
8
m
tube  out
s
a
king it protr
75) not suppl
p
ush and pull
s
ide
ude
ied:
the

9
7.INSTRUCTIONSFORUSE
Operationstoperformbeforestart‐up.
Check the integrity of the unit.
Check the power supply pressure.
Check that the electric connection was carried out correctly.
Check that the unit is at the operating temperature.
7.1USE
Open the manual cursor valve;
Press the start button on the machine to which the unit is connected or start it;
Check that the solenoid valves on the elements are correctly activated;
At the first start-up, it may be necessary to fill the oil pipes, wait until the lubricant exits;
Check that the lubrication is suitable (if there are doubts about correct operation, the DropsaSpA technical office can
be contacted to request the inspection procedure).
7.2REGULATION
The modular elements are normally supplied with the oil (NO CART version)regulation and the air regulation completely
closed. To regulate the air/oil mixture for the individual elements, proceed as follows:
Turn the oil regulation knob (NO CART version)clockwise to increase the flow rate or anticlockwise to decrease the
flow rate.Following an orientation reference diagram for flow adjustment.
Use a screwdriver to turn the air regulation pin clockwise to increase the flow rate or anticlockwise to decrease the
flow rate, until the desired spray is obtained, normally the adjustment is made by max 3 revs.

ATTENTION:Donotoverunscrewtheairregulationpinasitcouldgetoutitsplace.