EN
(Translated from Italian)
EN
(Translated from Italian)
EN
(Translated from Italian)
EN
(Translated from Italian)
EN
(Translated from Italian)
EN
(Translated from Italian)
PIUSI S.p.A.
Suzzara (MN) Italy
USE AND MAINTENANCE
MANUAL
BEDIENUNGS- UND
WARTUNGSANLEITUNG
Bulletin M0059 E ENDE _ 00
EN
DE
Bulletin M0059 E ENDE _ 00
M3 MAXIMUM PRESSURE DECREASE
VISCOMAT series pumps are equipped with an adjusting screw to adjust the by-pass
valve pressure (pos... 10 in the exploded view).The screw is pre-set in the factory for oper-
ating at a maximum pressure that is equal to the maximum counter-pressure conditions
indicated in the table under paragraph E1 - Performance specifications. Should it be nec-
essary to decrease the maximum pressure, unscrew the adjusting screw until you reach
the desired value. The flow rate curve will be modified as follows:
(
l/m
)
1-2
6
(bar)
Adju-
stingscrew-
screwed
Adjusting-
screwun-
screwed
Flo
w r
at
e
As a result, plant specifications being equal,the flow rate of the pump will be decreased
due to the earlier opening of the by-pass valve.
N CONNECTIONS
N1 ELECTRICAL CONNECTIONS
FOREWORD
All motors come with a short cable used for production
testing. To connect the motor to the line, open the termi-
nal strip cover, remove the above mentioned cable and
connect the line according to the following chart:
THREE-PHASEAC
LINE.
TO MOTOR
TO MOTOR
CAP
ACIT
OR
SINGLE-PHASE
WARNING
Single-phase motors are supplied with a bipolar switch
and capacitors wired and installed inside the terminal strip
box (see chart). The capacitor characteristics are those
indicated on the pump label. The switch has the function
of starting/stopping the pump and cannot in any way re-
place the main power switch required by the applicable
regulations.
ATTENTION
Pumps are supplied without electrical safety de-
vices such as fuses, motor protectors, and systems
to prevent accidental restarting after periods of
power failure or any other kind. It is the installer's
responsibility to carry out the electrical connection
with respect to the applicable regulations
WARNING
Comply with the following (not exhaustive) instructions to
ensure a proper electrical connection:
DIRECTION
FOR COR-
RECT ELEC-
TRICAL IN-
STALLATION
- During installation and maintenance make sure that
power to the electric lines has been turned off.
- Employ cables characterized by minimum cross-sections,
rated voltages and installation type adequate to the char-
acteristics indicated in paragraph ELECTRICAL SPECIFICA-
TIONS and the installation environment.
- For three-phase motors, ascertain the correct rotation di-
rection by referring to paragraph - DIMENSIONS.
- All motors are equipped with a ground terminal to con-
nect to the ground line of the electrical network.
- Always close the cover of the terminals trip box before
turning on the electric power, after checking the integrity
of the gasket seals that ensure protection grade IP55.
ATTENTION
IT IS THE INSTALLER'S RESPONSIBILITY TO CARRY
OUT THE ELECTRICAL CONNECTIONS IN COMPLI-
ANCE WITH THE RELEVANT STANDARDS.
NOTE
The capacitor characteristics are those indicated on the
pump label. The switch has the only function of starting/
stopping the pump and cannot in any way replace the
main power switch required by the relevant standards.
O
INITIAL START-UP
FOREWORD
VISCOMAT series pumps are self-priming and, therefore,
able to draw oil from the tank even when the suction
hose is empty on start-up. The priming height (distance
between the surface of the oil and the inlet opening) must
not exceed 2,5 meters.
- Check that the quantity of fluid in the suction tank is
greater than the amount you wish to transfer.
- Make sure that the residual capacity of the delivery tank is
greater than the quantity you wish to transfer.
- Make sure that the piping and line accessories are in
good condition.
ATTENTION
Fluid leaks can damage objects and injure persons.
Wetting the Pump. Before starting the pump, wet the
inside of the pump body with oil through the inlet and
outlet openings.
NOTE
- Never start or stop the pump by connecting or cutting
out the power supply.
- Prolonged contact with some fluids can damage the
skin. The use of goggles and gloves is recommended.
The priming phase may last from several seconds to a few minutes, depending on
the characteristics of the system. If this phase is excessively prolonged, stop the
pump and verify:
1
that the pump is not running completely”dry”.
2
that the suction hose guarantees against air infiltration
and is correctly immersed in the fluid to be drawn.
3
that any filters installed are not blocked.
4
that the delivery hose allows for the easy evacuation of
the air.
5
that the priming height is not greater than 2,5 meters;
When priming has occurred, after reattaching the delivery gun, verify that the pump is
functioning within the anticipated ranges, possibly checking:
1
That under conditions of maximum back pressure, the
power absorption of the motor stays within the values
shown on the identification plate
2
that the suction pressure does not exceed the limits indi-
cated in paragraph H4 - CONSIDERATIONS REGARDING
SUCTION & DELIVERY LINES
3
that the back pressure in the delivery line does not exceed
the values indicated in paragraph H4 - CONSIDERATIONS
REGARDING SUCTION & DELIVERY LINES.
ATTENTION
For a complete and proper verification of points
2) and 3), the installation of vacuum and air pres-
sure gauges at the inlet and outlet of the pump is
recommended.
A
TABLE OF CONTENTS
A
TABLE OF CONTENTS
B
MACHINE AND MANUFACTURER IDENTIFICATION
C
DECLARATION OF INCORPORATION OF THE
PARTLY-COMPLETED MACHINERY
D
MACHINE DESCRIPTION
D1
HANDLING AND TRANSPORT
E
GENERAL WARNINGS
F
FIRST AID RULES
G
GENERAL SAFETY RULES
H
TECHNICAL DATA
H1
PERFORMANCE SPECIFICATIONS
I
ELECTRICAL DATA
L
OPERATING CONDITIONS
L1
ENVIRONMENTAL CONDITIONS
L2
ELECTRICAL POWER SUPPLY
L3
WORKING CYCLE
L4
PERMITTED AND NON-PERMITTED FLUIDS
M INSTALLATION
M1
HYDRAULIC CONNECTION
M2
CONSIDERATIONS REGARDING DELIVERY AND SUCTION LINES
M3
MAXIMUM PRESSURE DECREASE
N CONNECTIONS
N1
ELECTRICAL CONNECTIONS
O
INITIAL START-UP
P
EVERY DAY USE
Q MAINTENANCE
R
NOISE LEVEL
S
PROBLEMS AND SOLUTIONS
T
DEMOLITION AND DISPOSAL
U
EXPLODED DIAGRAMS
V DIMENSIONS
B
MACHINE AND MANUFACTURER IDENTIFICATION
JAHR DER
HERSTELLUNG
MODELL
CODE
PRODUKT
TECHNISCHE
MERKMALES
F0033490A
AVAILABLE MODELS: 100/110/230/400V AC
MANUFACTURER:
Piusi Inc.
Via Pacinotti 16/A Z.I. Rangavino
46029 Suzzara (Mantova) Italy
C
DECLARATION OF INCORPORATION OF THE
PARTLY-COMPLETED MACHINERY
The undersigned
PIUSI Inc.
Via Pacinotti 16/A - z.i. Rangavino
46029 Suzzara - Mantova - Italy
HEREBY STATES under its own responsibility, that the partly-completed machinery:
Description: partly-completed machinery for lubricant oil transfer
model : VISCOMAT 70 / VISCOMAT 90
Serial No.: refer to Lot Number shown on CE plate affixed to product
Year of manufacture: refer to the year of production shown on the CE plate affixed to the
product.
Is intended to be incorporated in a machine (or to be with other machines) so as to cre-
ate a machine to which applies Machine Directive 2006/42/EC, may not be brought into
service before the machine into which it is to be incorporated has been declared in con-
formity with the provisions of the directive 2006/42/EC.
Is in conformity with the legal provisions indicated in the directives:
- Electromagnetic Compatibility Directive 2004/108/EC
- Low-Voltage Directive 2006/95/CE
To which the essential safety requirements have been applied and complied with
what indicated on annex I of the machine directive applicable to the product and shown
below: 1.1.3 - 1.1.5 - 1.3.1 - 1.3.2 - 1.3.3 - 1.3.4 - 1.3.7 - 1.3.8 - 1.4.1 - 1.4.2.1 - 1.5.1 - 1.5.2 - 1.5.4
- 1.5.5 - 1.5.8 - 1.5.9 - 1.5.11 - 1.5.13 - 1.5.15 - 1.6.1 - 1.6.3 - 1.6.4 - 1.7.1 - 1.7.2 - 1.7.3 - 1.7.4.
The documentation is at the disposal of the competent authority following motivated
request at Piusi Inc. or following request sent to the email address:
The person authorised to compile the technical file and draw up the declaration is Otto
Varini as legal representative.
Suzzara, 01/01/2012
Legal Representative
D
MACHINE DESCRIPTION
PUMP: Self-Priming, volumetric, rotating electric vane pump equipped with by-pass
valve.
MOTOR: Asynchronous motor, single-phase or three-phase, 2 or 4 pole, closed type (Pro-
tection class IP55 according to regulation EN 60034-5-86), self-ventilating, flange-mount-
ed directly to the pump body.
D1
HANDLING AND TRANSPORT
Due to the limited weight and dimensions of the pumps, special lifting equipment is not
required to handle them. The pumps are carefully packed before dispatch. Check the
packing when receiving the material and store in a dry place.
PUMP MODEL
PACKING SIZE
TOTAL WEIGHT
A (mm)
B (mm)
H (mm)
(Kg)
SINGLE-PHASE 70
180
350
240
14,3
THREE-PHASE 70
180
350
240
12,8
THREE-PHASE 90
180
350
240
15
E
GENERAL WARNINGS
Important
precautions
To ensure operator safety and to protect the pump from po-
tential damage, workers must be fully acquainted with this
instruction manual before performing any operation.
Symbols used
in the manual
The following symbols will be used throughout the manual
to highlight safety information and precautions of particular
importance:
ATTENTION
This symbol indicates safe working practices for opera-
tors and/or potentially exposed persons.
WARNING
This symbol indicates that there is risk of damage to
the equipment and/or its components.
NOTE
This symbol indicates useful information.
Manual pres-
ervation
This manual should be complete and legible throughout. It
should remain available to end users and specialist installa-
tion and maintenance technicians for consultation at any
time.
Reproduction
rights
All reproduction rights are reserved by Piusi Inc. The text can-
not be reprinted without the written permission of Piusi Inc
© Piusi Inc.
THIS MANUAL IS THE PROPERTY OF Piusi Inc.
ANY REPRODUCTION, EVEN PARTIAL, IS FORBIDDEN.
F
FIRST AID RULES
Contact with
the product
In the event of problems developing following EYE/SKIN
CONTACT, INHALATION or INGESTION of the treated prod-
uct, please refer to the PRODUCT SAFETY DATA SHEET.
Persons who
have suffered
electric shock
Disconnect the power source, or use a dry insulator to pro-
tect yourself while you move the injured person away from
any electrical conductor. Avoid touching the injured person
with your bare hands until he is far away from any conductor.
Immediately call for help from qualified and trained person-
nel. Do not operate switches with wet hands.
NOTE
Please refer to the safety data sheet for the product
SMOKING
PROHIBITED
When operating the dispensing system and in par-
ticular during refuelling, do not smoke and do not use
open flame.
G
GENERAL SAFETY RULES
Essential protec-
tive equipment
characteristics
Wear protective equipment that is:
• suited to the operations that need to be performed;
• resistant to cleaning products.
Personal protec-
tive equipment
that must be
worn
safety shoes;
close-fitting clothing;
protection gloves;
safety goggles;
instructions manual
Protective gloves
Prolonged contact with the treated product may cause
skin irritation; always wear protective gloves during dis-
pensing.
DANGER
Never touch the electric plug or socket with wet hands.
Do not switch the dispensing system on if the network
connection cable or important parts of the apparatus are
damaged, such as the inlet/outlet pipe, nozzle or safety
devices. Replace the damaged pipe immediately.
Before each use, check that the network connection ca-
ble and power plug are not damaged. Have the network
connection cable replaced immediately by a qualified
electrician.
ATTENTION
The electrical connection between the plug and socket
must be kept well away from water.
Unsuitable extension leads can be dangerous. In accor-
dance with current regulations, only extension cords that
are labelled for outdoor use and have a sufficient con-
duction path should be used outdoors.
For safety reasons, we recommend that, in principle, the
equipment be used only with a earth-leakage circuit
breaker (max 30 mA).
H
TECHNICAL DATA
H1
PERFORMANCE SPECIFICATIONS
The performance data provided for the various pump models of the VISCOMAT family
can be illustrated with curves that show the relation-ship between the flow rate supplied
and the back pressure that the pump must overcome. Diagram “A” illustrates a flow rate/
back pressure curve typical of all of the pumps in the VISCOMAT family.
P bypass
1
2
3
Qmax
Flo
w R
at
e
Q (l/min)
Qmin
1
2
3
Qmax
Flo
w R
at
e
Q (l/min)
500 cSt
50 cSt
P max
Back Pressure P (bar)
Back Pressure P (bar)
P bypass
P max
A
B
Point 1 is the point with practically zero counter-pressure operation, in which the pump
dispenses with max flow (Qmax). Point “2” is the operating point with max counter-pressure
(Pmax) in which the pump dispenses with minimum flow (Qmin), BEFORE THE BYPASS
STARTS.
When the counter-pressure exceeds Pmax value, the bypass opens, with consequent re-
duction of the dispensed flow. At zero flow (point “3”) all the flow dispensed by the pump is
re-circulated in bypass and the supply line pressure reaches bypass value.
The VISCOMAT pumps can therefore operate with any counter-pressure between zero and
Pmax, dispensing a flow that varies according to the counter-pressure, between Qmax and
Qmin values. The Qmin, Qmax, Pmax, Pbypass values are provided on the chart below for
all pump models:
PUMP MODEL
BY PASS Condition
Max. back pressure
condition
Max. flow rate con-
dition
D (l/min)
P (bar)
D (l/min)
P (bar)
D (l/min)
P (bar)
VISCOMAT 70 230/50
0
9 ±0,5
17
6
26
1
VISCOMAT 70 230/60
0
9 ±0,5
23
6
31
1
VISCOMAT 90 T
0
6
50
5
55
1
VISCOMAT 70 100/50
0
6,5
26
4,5
30
1
VISCOMAT 70 100/60
0
5
26
3,5
36
1
VISCOMAT 70 110/50
0
7,5
26
6
30
1
VISCOMAT 70 110/60
0
5
26
3,5
36
1
VISCOMAT 90 230/50
0
6 ±0,5
27
3,5
47
1
VISCOMAT 90 230/60
0
6 ±0,5
35
3,5
54
1
VISCOMAT pumps can pump oils of very different viscosities, within the limits indicated
in the TECHNICAL SPECIFICATIONS, without requiring any adjustment of the by-pass. The
characteristic flow rate/back pressure curve illustrated in diagram “A” relates to function-
ing with oil of a viscosity equal to approximately 500 cSt (comparable, for example, to oil
SAE 10W40 at a temperature of 22°C).
Variations in the viscosity of the oil cause changes in pump performance. The greater the
counter-pressure at which the pump operates, the greater the performance changes.
Diagram “B” shows how THE CURVE MOVES AS A RESULT OF VARIATIONS IN VISCOSITY.
I
ELECTRICAL DATA
PUMP MODEL
ELECTRICAL POWER
POWER CURRENT
SPEED
Current Voltage
(V)
Frequen-
cy (Hz)
Rated
(Watt)
Maxi-
mum
(Amp)
Rated
(g/m)
VISCOMAT 70 230/50
AC
230
50
1200
5,5
1470
VISCOMAT 70 230/60
AC
230
60
1100
5,1
1650
VISCOMAT 70 T
AC
400
50
750
2,2
1450
VISCOMAT 90 T
AC
400
50
2000
5
1450
VISCOMAT 70 100/50
AC
100
50
900
10,5
1450
VISCOMAT 70 100/60
AC
100
60
1100
13
1700
VISCOMAT 70 110/50
AC
110
50
1200
12,7
1450
VISCOMAT 70 110/60
AC
110
60
1200
12
1700
VISCOMAT 90 230/50
AC
230
50
1200
6,2
1440
VISCOMAT 90 230/60
AC
230
60
1150
5
1650
ATTENTION
The power absorbed by the pump depends on the
functioning point and the viscosity of the oil being
pumped. The data for MAXIMUM CURRENT pro-
vided in the Table refer to pumps functioning at the
point of maximum compression Pmax, with oils of
a viscosity equal to approximately 500 cSt.
L
OPERATING CONDITIONS
L1
ENVIRONMENTAL CONDITIONS
TEMPERATURE
min. -10 °C / max +40 °C
RELATIVE HUMID-
ITY
max. 90%
LIGHTING
The environment must conform to directive 89/654/EEC
on work environments.
In case of non-EU countries, refer to directive EN ISO
12100-2 § 4.8.6.
ATTENTION
The temperature limits shown apply to the pump com-
ponents and must be respected to avoid possible dam-
age or malfunction.
The temperature limits shown apply to the pump com-
ponents and must be respected to avoid possible dam-
age or malfunction. It is understood, nevertheless, that
for a given oil, the real functioning temperature range
also depends on the variability of the viscosity of the oil
itself with the temperature. Specifically:
• The minimum temperature allowed (-10°C) could cause
the viscosity of some oils to greatly exceed the maximum
allowed, with the consequence that the static torque re-
quired during the starting of the pump would be exces-
sive, risking overload and damage to the pump.
• The maximum temperature allowed (+40°C) could, on
the other hand, cause the viscosity of some oils to drop
well below the minimum allowed, causing a degrada-
tion in performance with obvious reductions in flow rate
as the back pressure increases.
L2
ELECTRICAL POWER SUPPLY
NOTE
Depending on the model, the pump must be fed by three-
phase or single-phase alternating current whose nominal
values are those indicated in the Table of paragraph ELEC-
TRICAL SPECIFICATIONS.,
The maximum acceptable variations from the electrical
parameters are:
V/- 5% of the nominal value
Fre/- 5% of the nominal value
ATTENTION
Power from lines with values outside the indicated lim-
its can damage the electrical components.
L3
WORKING CYCLE
NOTE
The motors are intended for continuous use. Under nor-
mal operating conditions they can function continuously
with no limitations
For 240v voltage ratings (australia) the duty cycle is 30’ on
/ 30’ off.
ATTENTION
Functioning under by-pass conditions is only allowed for
brief periods of time (2-3 minutes maximum).Whenever
a particular installation carries the risk of functioning in
by-pass mode for longer periods of time, it is necessary
that the by-passed flow not be recirculated inside the
pump, but be returned to the suction tank.
L4 PERMITTED AND NON-PERMITTED FLUIDS
PERMITTED
OIL with a VISCOSITY from 50 to 500 cSt (at working temperature)
NOT PERMITTED:
RELATED DANGERS
• GASOLINE
• INFLAMMABLE LIQUIDS with PM < 55°C
• WATER
• FOOD LIQUIDS
• CORROSIVE CHEMICAL PRODUCTS
• SOLVENTS
•FIRE - EXPLOSION
•FIRE - EXPLOSION
•PUMP OXIDATION
•CONTAMINATION OF THE SAME
•PUMP CORROSION INJURY TO PERSONS
•FIRE - EXPLOSION DAMAGE TO GASKET
SEALS
M INSTALLATION
ATTENTION
The pump must never be operated before the delivery
and suction lines have been connected.
PRELIMINARY
INSPECTION
- Verify that all components are present. Request any missing parts
from the manufacturer.
- Check that the pump has not suffered any damage during trans-
port or storage.
- Carefully clean the suction and delivery inlets and outlets, remov-
ing any dust or other packaging material that may be present.
- Check that the electrical data corresponds to those indicated on
the data plate.
- Always install in an illuminated area.
- Install the pump at a height of min. 80 cm.
M1 HYDRAULIC CONNECTION
NOTE
In the case of installation in the open air, proceed to pro-
tect the pump by providing a protection roof.
The pump must be secured in a stable way using the holes
on the bed of the motor and vibration damping devices.
ATTENTION
THE MOTORS ARE NOT OF THE ANTI-EXPLOSIVE-TYPE.
DO NOT install them where inflammable vapours could
be present.
It is the responsibility of the installer to provide the
necessary line accessories to ensure the correct
and safe operation of the pump. The accessories
that are not suitable to be used with the previously
indicated material could damage the pump and/
or cause injury to persons, as well as causing pol-
lution.
To maximise performance and prevent damage
that could affect pump operation, always demand
original accessories.
IMPORTANT
NOTE
• Make sure that the hoses and the suction tank are free of
dirt and filing residue that might damage the pump and
accessories.
• Always install a metal mesh filter in the suction hose.
• Before connecting the delivery hose, partially fill the
pump body with oil to avoid the pump running dry dur-
ing the priming phase.
• When connecting pump models furnished with BSP
threading (cylindrical gas) do not use joints with a conical
thread. Excessive tightening of these could cause damage
to the pump openings.
The MINIMUM recommended characteristics for hoses are as follows:
SUCTION HOSE -Minimum nominal diameter: 1"
-Nominal recommended pressure: 10 bar
-Use tubing suitable for functioning under suction pressure.
DELIVERY HOSE -Minimum nominal diameter: 3/4"
-Nominal recommended pressure: 30 bar
ATTENTION
The use of hoses and/or line components that are inap-
propriate for use with oil or have inadequate nominal
pressures can cause damage to objects or people as well
as pollution. The loosening of connections (threaded con-
nections, flanges, gasket seals) can likewise cause damage
to objects or people as well as pollution. Check all of the
connections after installation and on a regular on-going
basis with adequate frequency.
M2 CONSIDERATIONS REGARDING DELIVERY AND SUCTION LINES
DELIVERY
The choice of pump model to use should be made keeping in mind the viscosity of the
oil to be pumped and the characteristics of the system attached to the delivery of the
pump. The combination of the oil viscosity and the characteristics of the system could, in
fact,create back pressure greater than the anticipated maximums (equal to Pmax), so as
to cause the (partial) opening of the pump by-pass with a consequent noticeable reduc-
tion of the flow rate supplied. In such a case, in order to permit the correct functioning
of the pump equal to the viscosity of the oil being pumped, it will be necessary to re-
duce resistance in the system by employing shorter hoses and/or of larger diameter. On
the other hand, if the system cannot be modified it will be necessary to select a pump
model with a higher Pmax.
SUCTION
VISCOMAT series pumps are characterized by excellent suction capacity. In fact, the
characteristic flow rate/back pressure curve remains unchanged even at high pump
suction pressure values. In the case of oils with viscosity not greater than 100 cSt the
suction pressure can reach values on the order of 0.7 - 0.8 bar without compromising
the proper functioning of the pump. Beyond these suction pressure values,cavitation
phenomena begin as evidenced by accentuated running noise that over time can
cause pump damage, not to mention a degradation of pump performance. As viscosity
increases, the suction pressure at which cavitation phenomena begin decreases. In the
case of oils with viscosities equal to approximately 500 cSt, the suction pressure must
not exceed values of the order of 0,3 -0,5 bar to avoid triggering cavitation phenomena.
The values indicated above refer to the suction of oil that is substantially free of air. If the
oil being pumped is mixed with air, the cavitation phenomena can begin at lower suc-
tion pressures. In any case, for as much as was said above, it is important to guarantee
low suction pressures (short hoses and possibly of larger diameter than the inlet open-
ing of the pump,fewer curves, filters of wide cross-section and kept clean).
ATTENTION
It is a good system practice to immediately install vacu-
um and air pressure gauges at the inlets and outlets of
the pump which allow verification that operating condi-
tions are within anticipated limits. To avoid emptying
the suction hose when the pump is turned off, the instal-
lation of a foot valve is recommended.
P
EVERY DAY USE
FOREWORD
No particular preliminary operation is required for every
day use of VISCOMAT pumps.
MANUAL OP-
ERATION
1
Before starting the pump, make sure that the ultimate
shut-off device (delivery nozzle or line valve) is closed. If
the delivery has no shut-off device (free delivery) make
sure that it is correctly positioned and appropriately at-
tached to the delivery tank.
2
turn the on-switch present on some pump models (single-
phase) or the start/stop switch installed on the electrical
power line.
3
make sure that the tank is filled with a quantity of oil great-
er than the quantity to be supplied (running dry could
damage the pump).
ATTENTION
Never start the pump by simply inserting the plug
in the outlet.
4
Open the delivery valve or activate the delivery gun, grip-
ping it securely.
ATTENTION
Fluid exits at high pressure from a delivery gun fed
by a VISCOMAT pump. Never point the outlet of the
gun towards any part of the body.
5
Close the delivery gun or the line valve to stop delivery.
The pump will immediately enter by-pass mode.
ATTENTION
Running in by-pass mode with the delivery closed is
only allowed for brief periods(2 to 3 minutes maxi
-
mum).When the thermo-protector trips, turn-off
the electric power and wait for the motor to cool.
6
Stop the pump.
AUTOMATIC
OPERATION
In certain applications it can be advantage ous to provide for the
automatic starting/stopping of the pump by means of a pressure
switch that monitors the pressure of the delivery line. The functional
logic of this type of installation is as follows:
1
the pump is stopped, the delivery gun is closed and the
delivery line is under pressure.
2
the delivery gun is then opened, with theconsequent sud-
den lowering of pressure in the delivery line.
3
the pressure switch, at the moment that the pressure
drops below the value "Pm"automatically starts the pump
allowing delivery.
4
during delivery the pump delivers against a back pressure
that, depending on the conditions of the delivery line,
could turn out to be higher or lower than the pressure
"Pm".
5
at the moment the delivery gun is closed, the pressure will
increase rapidly and the pressure switch, at the moment in
which the pressure exceeds the value "Pa" will automati-
cally stop the pump.
The values of "Pa" and "Pm" are characteristics of the pressure switch used and are often
adjustable within a certain range. For the safe and proper functioning of the pump in
these types of applications it is absolutely indispensable to make sure that:
1
"Pa" is sufficiently lower than the bypass pressure, to as-
sure that the pump will stop as soon as the gun is closed
and that the pump will not run a long time in by-pass
mode.
2
"Pm" is several bar lower than "Pa" to avoid the pump
starting when not wanted due to small pressure drops not
caused by opening the gun.
3
the foot valve guarantees an effective seal, to avoid fre-
quent unwanted cycling on and off caused by its leakage.
4
whenever the system is entirely composed of metal
tubing, or, at any rate, of highly rigid tubing, one should
consider installing an accumulator capable of preventing
small leaks (from the foot valve, for example) from causing
a pressure drop sufficient to automatically start the pump.
ATTENTION
Failure to comply with the above can damage the
pump.
Q MAINTENANCE
Safety instruc-
tions
VISCOMAT series pumps are designed and constructed to require a
minimal amount of maintenance.
ONCE A WEEK: - On a weekly basis, check that the tubing joints have not loosened,
to avoid any leakage.
ONCE A
MONTH:
- On a monthly basis, check the pump body and keep it clean of any
impurities.
- On a monthly basis check and clean the filters placed at the pump
inlet.
- On a monthly basis, check that the electric power supply cables are
in good condition.
R
NOISE LEVEL
Under normal operating conditions noise emission for all models does not exceed the
value of 70 dB “A” at a distance of 1 Meter from the electric pump.
S
PROBLEMS AND SOLUTIONS
For any problems contact the authorised dealer nearest to you.
PROBLEM
POSSIBLE CAUSE
CORRECTIVE ACTION
THE MOTOR IS NOT
TURNING
Lack of electric power
Check the electrical connec-
tions and the safety systems.
Rotor jammed
Check for possible damage
or obstruction of the rotating
components.
The motor protecting thermals
witch has tripped
Wait until the motor cools, ver-
ify that it starts again, look for
the cause of overheating
Motor problems
Contact the Service Depart-
ment
THE MOTOR TURNS
SLOWLY WHEN
STARTING
Low voltage in the electric
power line
Bring the voltage back within
the anticipated limits
Excessive oil viscosity
Verify the oil temperature and
warm it to reduce the exces-
sive viscosity
LOW OR NO FLOW
RATE
Low level in the suction tank
Refill the tank
Foot valve blocked
Clean and/or replace the valve
Filter clogged
Clean the filter
Excessive suction pressure
Lower the pump with respect
to the level of the tank or
increase the cross-section of
the piping
High loss of head in the deliv-
ery circuit (working with the
by-pass open)
Use shorter piping or of
greater diameter
By-pass valve blocked
Dismantle the valve, clean
and/or replace it
Air entering the pump or the
suction piping
Check the seals of the con-
nections
A narrowing in the suction
piping
Use piping suitable for work-
ing under suction pressure
Low rotation speed
Check the voltage at the
pump. Adjust the voltage and/
or use cables of greater cross-
section
The suction piping is resting
on the bottom of the tank
Raise the piping
Excessive oil viscosity
Verify the oil temperature and
warm it to reduce the exces-
sive viscosity
INCREASED PUMP
NOISE
Cavitation occurring
Reduce suction pressure
Irregular functioning of the
by-pass
Dispense until the air is
purged from the by-pass
system
Presence of air in the fluid
Verify the suction connections
LEAKAGE FROM THE
PUMP BODY
Seal damaged
Check and replace the seal
THE PUMP DOES NOT
PRIME THE LIQUID
Suction circuit blocked
Remove the blockage from
the suction circuit
Malfunction of foot valve fit-
ted on suction circuit
Replace foot valve
The suction chambers are dry Add liquid from pump deliv-
ery side
The pump chambers are dirty
or blocked
Remove the blockages from
the suction and delivery valves
T
DEMOLITION AND DISPOSAL
Foreword
If the system needs to be disposed, the parts which make it up must
be delivered to companies that specialize in the recycling and dis-
posal of industrial waste and, in particular:
DISPOSAL OF OTHER PARTS:
Disposal of pack-
ing materials
The packaging consists of biodegradable cardboard which can be
delivered to companies for normal recycling of cellulose.
Disposal of metal
parts
Metal parts, whether paint-finished or in stainless steel, can be con-
signed to scrap metal collectors.
Disposal of elec-
tric and electronic
components
These must be disposed of by companies that specialize in the dis-
posal of electronic components, in accordance with the indications
of directive 2002/96/CE (see text of directive below).
Information
regarding the
environment for
clients residing
within the Euro-
pean Union
European Directive 2002/96/EC requires that all equipment marked
with this symbol on the product and/or packaging not be disposed
of together with non-differentiated urban waste. The symbol indi-
cates that this product must not be disposed of together with nor-
mal household waste. It is the responsibility of the owner to dispose
of these products as well as other electric or electronic equipment
by means of the specific refuse collection structures indicated by the
government or the local governing authorities.
Disposal of mis-
cellaneous parts
Other components, such as pipes, rubber gaskets, plastic parts and
wires, must be disposed of by companies specializing in the disposal
of industrial waste.
VISCOMAT
70-90
