GALILEO TP VACSOUND ECO D12 User manual

Code: 8.003.A.002 - rev. 3 30/09/2003 File: VacEco_eng.doc
VACSOUND
ECO
D12 – D18 – D28

VACSOUND ECO – Operating and maintenance instructions
2

VACSOUND ECO – Operating and maintenance instructions 3
CONTENTS
1. Preface 5
1.1 Purpose of this chapter 5
1.2 Safety rules 5
1.3 How to use this manual 6
2. Description and characteristics 7
2.1 Purpose of this chapter 7
2.2 Technical description 7
2.3 Lubrication 8
2.4 Vacuum seals 8
2.5 Gas Ballast Valve 8
2.6 Anti-suckback device 8
2.7 Technical data 9
2.7.1 Clearance dimensions 11
3. Installation and operation 13
3.1 Purpose of this chapter 13
3.2 Safety precautions 13
3.3 Transport and installation 13
3.4 Preliminary operations 14
3.5 Electrical connections 14
3.5.1 Models with single-phase motor 14
3.5.2 Models with three-phase motor 14
3.6 Connections on suction and exhaust sides 15
3.7 Starting and running the pump 15
3.8 Stopping the pump 16
4. Maintenance 17
4.1 Purpose of this chapter 17
4.2 Safety rules 17
4.2.1 Warning notes 17
4.2.2 Caution notes 18
4.3 Maintenance actions 18
4.4 Lubricants 19
4.5 Scheduled Maintenance Cards 20
4.6 Unscheduled Maintenance Cards 23
4.7 Troubleshooting and corrective action 44
5. Spare parts 47
5.1 Purpose of this chapter 47
5.2 Spare Parts List 47

VACSOUND ECO – Operating and maintenance instructions
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PURPOSE OF THE MANUAL
This manual details the procedures for installation and operation of the VACSOUND D12,
D18 and D28 pumps.
The manual comprises 5 chapters, as described below:
1. Chapter 1, PREFACE, provides general safety precautions and information about the
structure of the manual and how to use it;
2. Chapter 2, DESCRIPTION AND CHARACTERISTICS, provides a description of the
structure of the pump with its main features, and lists the technical data;
3. Chapter 3, INSTALLATION AND OPERATION, provides the main items of information
needed for correct installation and explain how to start and stop the pump;
4. Chapter 4, MAINTENANCE, is a summary of the main maintenance actions, with a table
of lubrication oils and the Scheduled and Unscheduled Maintenance Cards;
5. Chapter 5, SPARE PARTS, contains a list of spare parts and accessories for the pump.

VACSOUND ECO – Operating and maintenance instructions 5
1. Preface
1.1 Purpose of this chapter
Chapter 1, PREFACE, provides the general safety rules and information on structure of the
manual and how to use it.
1.2 Safety rules
Those working on this pump must be aware of and observe at all times the general and
specific safety rules that are listed below.
Failure to observe the safety rules may result in harm being caused to personnel and/or
damage to pump components.
With a view to preventing the risks deriving from operation of the pump, suitable protection
devices must be installed, in accordance with the applicable national safety rules.
All pump installation and maintenance work is to be performed with the electric power line
not connected.
Staff responsible for installation, maintenance and operation of the pump must realize that
knowing and applying the safety precautions is an integral part of their work. In particular,
those responsible for the following:
• Putting the pump into service, or managing its operation;
• Performing different types of work on the pump, especially regarding maintenance,
control and repair of any of the pump’s components before it is switched on, during
operation, or even after it is switched off;
must read the documentation carefully so as to be aware of the potential dangers
that they may encounter in the course of their work, both as regards operation and
correct use of the safety devices.
When installing or replacing a part, take great care. Pay special attention to the three-phase
motor, where an inversion of polarity causes inversion of the direction of rotation of the
pump with consequent possibilities of mechanical damage.
Further safety rules will be found in the chapters on specific operations.

VACSOUND ECO – Operating and maintenance instructions
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1.3 How to use this manual
This section details some of the steps taken in the preparation of this manual.
The definitions below refer to all the CAUTIONS, WARNINGS and NOTES given throughout
the manual.
CAUTION: Operating procedures, technical information and precautions which, if not
respected and/or implemented correctly may cause damage to the pump.
WARNING: Operating procedures, technical information and precautions which, if not
respected and/or implemented correctly may cause bodily harm to operators.
NOTE: Operating procedures, technical information and precautions that must be
underlined.
Figure 1-1 Product
identification plate

VACSOUND ECO – Operating and maintenance instructions 7
2. Description and characteristics
2.1 Purpose of this chapter
CHAPTER 2, DESCRIPTION AND CHARACTERISTICS, describes the constituent parts of the
pumps, illustrating their main features and listing the technical data.
2.2 Technical description
The VACSOUND ECO D12, D18 and D28 pumps are twin-stage, rotary, vane pumps with an
oil-bath seal, driven by a single-phase or three-phase electric motor.
These high vacuum pumps are suitable for pumping of neutral gases and CFC, HCFC and
HFC steams. The main features are:
• all parts in direct contact with the pumped fluid are free of copper alloys;
• all materials are carefully selected to provide longer life;
• a high capacity gas ballast device allows condensable vapours to be pumped;
• all parts are fully replaceable due to the close machining tolerances and centering
obtained by using reference pins;
• with its design features and low number of gaskets, the pump requires minimal
maintenance; disassembly and reassembly are extremely fast.
The pump works with forced lubrication, provided by an auxiliary gear-pump driven by the
rotor of the vacuum pump itself. This ensures proper lubrication even when pressures are
close to atmospheric.
The entire functional block (chambers, rotors, sides, valves etc.) is immersed in the oil
contained in the casing. The oil guarantees perfect sealing of the discharge valves, enters
the pump to ensure lubrication and sealing of the parts inside, facilitates heat dissipation
and reduces pump noise.
The pump is equipped with a special anti-suckback device which automatically isolates the
vacuum system when the pump stops. This avoids rises in pressure or oil flow in the
vacuum system while air is allowed back into the stator chambers.
The air entering the pump after the anti-suckback device has closed prevents the oil in the
casing from filling the stator chambers.
The inner seals are achieved by the lubricating oil, thanks to the close machining tolerances.
There is only one oil seal on the rotor shaft, the one preventing oil from seeping out of the
pump. This seal acts on a bushing fitted onto the shaft. Simple replaceable of this seal
grants the rotor a practically unlimited life (pumps D18, D28). On the D12 pump, this seal
acts on a surface-hardened area of the shaft guaranteeing long rotor life.
The vacuum pumps are connected directly to the electric motor through a flexible coupling,
so that motion is transmitted even in case of poor alignment.
A fan fitted on the joint and housed in the pump support produces a forced air flow over the
finned surfaces of the casing to avoid oil overheating.

VACSOUND ECO – Operating and maintenance instructions
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2.3 Lubrication
The pump’s lubricating system is force-feed type. Oil circulation is obtained by means of a
gear pump connected to the rotor shaft. The oil is sucked through a gauze filter to prevent
any foreign bodies from entering the pump.
Shunt-mounted on the delivery line is a hydraulic piston which, besides actuating the anti-
suckback device (see section 2.6), also regulates pressure by discharging excess oil flow
directly into the tank. The required flow of oil under pressure passes through ducts that are
drilled in the walls of the pump and lubricates the bearings and the inside parts.
The bearing on the motor side, is lubricated by oil sucked in through two orifices which
communicate with the casing.
2.4 Vacuum seals
A special feature of this pump is the low number of gaskets that are used.
Careful surface finish of the various parts of the pump means that vacuum sealing of the
functional block is ensured by the film of oil in the metal-metal contact of the surfaces.
Sealing of the rotor shaft is guaranteed by a rotating gasket with dust-guard lip. The suction
flange and duct are sealed by means of OR gaskets.
2.5 Gas ballast valve
When the pump sucks in vapours, these condense during compression and mix with the oil,
forming an emulsion (an aqueous vapour, for example) or a solution (organic solvent
vapours, for example).
A number of problems arise from this, such as the impossibility of obtaining high vacuums,
the alteration of the properties of the oil, the danger of incrustations forming on parts of the
pump.
To avoid this, during compression at the second stage, atmospheric air is let into the pump
through an adjustable valve, or “gas ballast valve”, located at the top of the pump.
In this way, the discharge valve of the second stage opens through the effect of the
atmospheric air before the partial pressure of the vapour reaches saturation point, thus
preventing condensation from occurring. The vapours are expelled mixed with air.
2.6 Anti-suckback device
The pump is equipped with a special anti-suckback device to avoid air pressure rises and/or
oil backflow towards the evacuated vessel when the pump is switched off. This device has a
shutter which automatically closes the suction duct.
In this way the pump and vacuum system are completely isolated from each other and air
can enter the pump without any risk for the vacuum produced in the system.
The device includes some special features, namely:
• drive obtained avoiding any form of contamination of the suction duct by fluids (oil
and/or air) used to command the shutter. Thanks to this, when the pump is started
again, the pumpdown to vacuum conditions is extremely fast as these contaminants are
not present and no degassing is therefore required;
• suction flange maintained closed even when the pump is idle, so that pollutants cannot
enter from the environment and no oil can overflow from the pump.

VACSOUND ECO – Operating and maintenance instructions 9
2.7 Technical data
Table 2-1 lists the main technical data of the VACSOUND ECO D12, D18 and D28 pumps.
PROPERTY UNIT D12 D18 D28
Nominal flow 50 Hz m3/h 14,2 20,5 30,2
Effective flow 50 Hz (*) m3/h 11,4 17,4 26
Nominal flow 60 Hz l/min 290 420 610
Nominal flow 60 Hz cfm 10,2 14,8 21,5
Final vacuum (*) mbar 10-3 10-3 10-3
Final vacuum with gas ballast (*) mbar 5.10-2 5.10-2 5.10-2
Tolerated water vapor pressure mbar 20 30 30
Max. water vapor pumped g/h 160 350 550
Min./max. oil capacity l 0,25/0,6 0,5/1 0,5/1
Electric motor 50 Hz (1ph/3ph) kW 0,45/0,55 0,75/0,90 0,75/0,90
Electric motor 50/60 Hz (1ph/3ph) kW 0,37/0,45 0,75/0,90 0,75/0,90
Rotation speed 50 Hz rpm 1500 1500 1500
Rotation speed 60 Hz rpm 1800 1800 1800
Noise level at final vacuum at 1 m. dB(A) 52 52 52
Operating temperature (**) °C (°F) 45 (113) 45 (113) 45 (113)
Weight with 50 Hz, 1ph motor (3ph) kg 22,8 36,2 36,2
Weight with 50/60 Hz, 1ph motor (3ph) kg 18,5 29,2 29,2
Dimensions (cf. also next Table):
Length, 1ph (3ph) mm 471 (450) 540 (510) 540 (510)
Width mm 134 164 164
Height mm 212 242 242
Suction and exhaust flanges DN 25KF
PN16
25KF
PN16
25KF
PN16
Table 2-1 Technical Data
(*)According to PNEUROP standards 6602
(**)At final vacuum (room temperature 20°C)

VACSOUND ECO – Operating and maintenance instructions
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Legend (cf. figure 2-1)
1. Electric motor
2. Rubber foot
3. Screw
4. Screw
5. Screw
7. Spacer
8. Motor support
9. Handle
10. Screw
11. Right sideplate
12. Board
14. Screw
15. Support plate
16. Cylindrical pin
17. Screw
18. Rubber crown
19. Half-joint (motor side) with fan
20. Half-joint (pump side)
21. Oil-seal ring
22. Special screw
23. OR gasket
24. Gas Ballast Valve knob
25. Half-plate
26. Suction sieve
27. OR gasket
28. Suction flange
29. Anti-suckback shutter
30. Piston
31. OR gasket
32. Casing gasket
33. Inner sideplate
34. Pump support
35. Anti-wear bushing
36. OR gasket
37. Tongue
38. First stage vane
39. First stage rotor
40. Spring
41. Tongue
42. Second stage vane
43. Second stage rotor
44. Tie-rod
45. OR gasket
46. Bracket
47. Screw
49. Valve cover plate
50. Valve spring
51. Valve gasket
52. First stage stator
53. Partition wall
56. Gas Ballast Valve shutter
57. Gas Ballast Valve spring
58. Second stage stator
59. Oil pump shaft
60. Special screw
61. End sideplate
62. Tongue
63. Washer
64. Nut
69. Oil pump gears
70. Oil pump cover
71. Screw
73. Plate
74. Filter
75. Casing
76. Exhaust flange
77. OR gasket
78. Oil fill plug
79. Oil drain plug
80. Oil drain plug gasket
81. Left sideplate
83. Spring
84. Filter
85. Flange
86. Sight glass
87. OR gasket
99. Special screw
100. Piston
101. Arm
102. Spring
103. OR gasket
104. OR gasket
105. Sleeve
106. Spring
107. Ring
108. Arm
109. Insert
110. Special washer
111. Screw
Figure 2-1 View of the pump

VACSOUND ECO – Operating and maintenance instructions 11
2.7.1 Dimensions
REFER TO FIGURE 2-2
PUMP A B C D H L
(1ph)
L
(3ph)
M N P R W
mm 30 30 35 3 212 471 450 244,5 104 105 205 134
D12
inch 1.2 1.2 1.4 0.12 8.4 18.5 17.7 9.63 4.09 4.2 8.1 5.3
mm 40 40 40 6 242 540 510 261 130 100 230 164
D18
inch 1.6 1.6 1.6 0.24 9.5 21.3 20.0 10.2 5.12 3.9 9.1 6.5
mm 40 40 40 6 242 540 510 261 130 100 230 164
D28
inch 1.6 1.6 1.6 0.24 9.5 21.3 20.0 10.2 5.12 3.9 9.1 6.5
Figure 2-2: Pump dimensions
Figura 2-3: Typical Performance Curves

VACSOUND ECO – Operating and maintenance instructions
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VACSOUND ECO – Operating and maintenance instructions 13
3. Installation and operation
3.1 Purpose of this chapter
Chapter 3, INSTALLATION AND OPERATION, provides the main information required for
proper installation and the procedures for starting and stopping the pumps.
3.2 Safety rules
• Always carry the pump by means of the handles provided.
• The pump must be set in position taking the utmost care in order to avoid accidental
falls.
WARNING: In case of a need to handle the pump after a period of operation, it must be
left to cool first as the external surface temperature may be in excess of 60 °C.
3.3 Transport and installation
The pumps are shipped to the customer inside cardboard boxes. Total weight of the pack,
including the pump, is 40 kg [daN]. The case must be handled with care, using appropriate
lifting equipment.
CAUTION: When moving the case, ensure that it is securely bound to the lifting equipment
and that the equipment is strong enough to support the weight.
The pump’s working environment is a traditional industrial environment. Naturally sites with
corrosive vapors or excessive heat are best avoided. Room temperature should ideally be
between 12 °C and 45 °C. If the temperature is not inside this range, consult GALILEO TP
technical service for the changes required. Setting the pump in position should be
performed as follows:
• Pump laid on the ground. There are no special instructions for this type of installation,
except that the floor should be as flat as possible and suited to bear the weight of the
pump (it should ideally be a concrete floor) and of any accessories mounted on it. Verify
that the pump is stable on its base plate. It should not be necessary to anchor it to the
floor with bolts and screws; also vibrations to and from the pump are greatly reduced by
the use of rubber feet.
• Pump off the ground. In this case, the user must design a suitable support structure,
remembering the following points:
 the plane supporting the pump must be perfectly horizontal;
 the structure should be rigid;
 apply the safety precautions in force.
Note also that the pump should be attached to the supporting structure after replacing
the rubber feet with special anti-vibration feet, which should be screwed to the pump
base and to the supporting plane.
After taking the pump out of its packing case, you are advised to make the following
checks:
a. Ensure that the pump has not suffered any damage during shipping.
b. Check that the guards are mounted correctly (side plates, refs. 11 and 81 in fig. 2-1)
and that there are no uncovered or loose parts.
c. Examine the power cord carefully and check that the insulation has not been damaged.

VACSOUND ECO – Operating and maintenance instructions
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3.4 Preliminary operations
Before starting the pump, fill up with lubricating oil as the pumps are delivered empty.
NOTE: A tin of oil is included in the packing.
For details on how to fill up, see Scheduled Maintenance Card 01 (Section 4.5).
CAUTION: Oil must be poured into the casing through the special threaded plughole and
NOT through the suction line.
WARNING: Take out the protective caps on the suction and exhaust flanges before doing
anything else. In the event of an accidental start-up, the air inside the pump could throw
the caps against the operator.
3.5 Electrical connections
CAUTION: Check that your electrical mains voltage corresponds to that indicated on the
motor’s plate.
3.5.1 Models with single-phase motors
The pump is supplied with a power cable (twin-pole + earth) 2 m long, complete with plug.
The motor has a bipolar switch. Direction of rotation of the motor needs not to be checked
on these models.
The motor includes a thermal relay for protection against current overloads. If the motor is
switched off by this relay, it may be started again by re-energizing the relay externally after
removing the cause of the overload.
NOTE: If fuses are installed on the power line, they must have a rating of 10 A.
3.5.2 Models with three-phase motors
To connect the motor to the three-phase mains, follow the wiring diagram on the motor
plate or on the inside of the terminal strip.
Install a multipolar omnipole switch on the power line, with contact spacing of at least 3
mm.. A magneto-thermal switch must be installed downstream of this switch, tripping at
130-140 % of the nominal current.
CAUTION: It is recommended to connect the pump to the power supply through a
dedicated switch on the main electrical panel of the installation, or in proximity of the power
supply connection point.
Before starting the pump, give a short activation to the power switch, in order to check that
the motor turns in the direction indicated by the arrow on the motor body. Should it rotate
in the opposite direction, invert the connection of any two phases on the motor terminals.

VACSOUND ECO – Operating and maintenance instructions 15
3.6 Connections on suction and exhaust sides
Remove the protective caps from both flanges. Connect the system to be evacuated to the
suction flange, using a centering ring with OR and a locking collar.
NOTE: For guaranteed reliable sealing, use an OR gasket in Perbunan or Viton.
The suction duct is equipped with a sieve filter preventing solid particles from entering and
damaging the pump.
NOTE: When the gases to be sucked out contain dust, it is advisable to insert a dust filter
before the suction flange.
NOTE: When the gases to be sucked out contain large quantities of vapor, it is advisable to
include a condensate separator before the suction flange.
To make best use of the pump’s capacity, use only short, straight piping, with a diameter
not less than that of the suction inlet.
NOTE: If rigid piping is used, it is good practice to use a flexible joint in order to avoid
undue forcing of the connection on the pump.
The exhaust duct must be connected to a pipe that will take away the sucked out gases.
NOTE: Application of an oil trap filter is necessary to avoid pollution of the surrounding
atmosphere by the oil present in the exhaust duct during pump operation.
CAUTION: Never block the pump exhaust line. This would cause overpressure in the casing
with the risk of breaking the glass window of the level indicator and/or expelling the oil seal
gasket.
3.7 Starting and running the pump
Before being put into service, in order to reach maximum vacuum, the pump must be left
running for about an hour with the gas ballast valve open and the aspiration line closed.
This will eliminate any humidity from the oil.
WARNING: The vacuum pump can’t be used to pump the atmospheric pressure more than
for 15 minutes; in this case can occur the seizure of some internal parts, for the not correct
lubrication of the rotors.
WARNING: The pump is designed for operation with air, oil vapors Ester based and R134a
vapors. It is absolutely forbidden to use potentially explosive or flammable substances.
NOTE: If the pump is started with cold oil, initially more than normal noise will be heard;
this will last for a few minutes only until the oil reaches its working temperature.
There are no special instructions for normal operation of the pump, which is delivered to
you after completion of a running-in cycle in the factory. The maintenance operations for a
pump in working condition may be found on the Scheduled Maintenance Cards (Section
4.5).
If the pump is sucking in environments with liquids or vapors, it is important to leave it to
run with the gas ballast open so as to avoid condensation of the vapors and contamination
of the lubricating oil as a result. When there is no danger of the oil being contaminated, the
gas ballast valve should be closed to reduce the pump’s power absorption.

VACSOUND ECO – Operating and maintenance instructions
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The gas ballast valve will prove useful in the cold season when, due to the lower room
temperatures, it takes longer for the pump to reach rated temperature when switched on.
Compression of the air forced in by the gas ballast valve develops heat, which in turn
increases temperature of the oil faster.
NOTE: If gases without vapors are sucked in, you are advised to open the gas ballast
device from time to time in order to eliminate the traces of humidity they contain.
NOTE: For repetitive work cycles, with brief time intervals in between, it is better not to
stop the pump.
3.8 Stopping the pump
There are no special procedures for switching the pump off; it needs only to be
disconnected from the electric power by means of the bipolar switch (version with single-
phase motor - see section 3.5.1) or of the multipolar switch (version with three-phase
motor - see section 3.5.2).
When the pump is stopped, the anti-suckback device makes it possible to maintain vacuum
in the vessel connected on the suction side of the pumps.
If the pump is expected to be stopped for a lengthy period, or in any case if it has sucked in
large amounts of vapors, it is good practice to run it with the gas ballast open and the
suction line closed for a few minutes before switching off in order to limit the risk of
corrosion or incrustations due to pollution of the oil by condensed vapors.

VACSOUND ECO – Operating and maintenance instructions 17
4. Maintenance
4.1 Purpose of this chapter
Chapter 4, MAINTENANCE, provides a rundown of the main maintenance operations, and
contains a lubrication table; also included are the Scheduled Maintenance and Unscheduled
Maintenance cards.
4.2 Safety rules
Personnel responsible for pump operation and maintenance must be well-trained and must
be aware of the accident prevention rules.
The accident prevention precautions contained in this section must be respected at all times
during operation and maintenance of the pump to avoid damage to operators and to the
pump.
These precautions are provided in the form of WARNING and CAUTION notes.
WARNING: Operating procedures, technical information and precautions which, if not
respected and/or implemented correctly may cause bodily harm to operators.
CAUTION: Operating procedures, technical information and precautions which, if not
respected and/or implemented correctly may cause damage to the pump.
4.2.1 Warning notes
a. Death may result from contact with high voltages. Always take extreme care and
observe the accident prevention regulations in force.
b. Always disconnect the power supply to the pump before commencing maintenance work.
Place a special warning signs over the power supply breaker switch: MACHINE
UNDERGOING MAINTENANCE - DO NOT POWER ON.
c. If you are performing maintenance after the pump has been operating for a considerable
time, allow sufficient time for it to cool as the external surface temperature may be in
excess of 60 °C.
d. Failure to provide the pump with an earth connection may cause serious damage to
operators. Always ensure that there is an earth connection and that it complies with the
standards.
e. When cleaning the pump and its component parts, avoid the use of flammable or toxic
solvents, such as benzine, benzene, ether or alcohol. The recommendation is to use a
soap and water solution, preferably in ultrasound washing machines, taking care to dry
all the cleaned parts at temperatures under 100 °C in order to eliminate residual
moisture.
f. Prolonged overloads or breakdowns may cause the electric motor to overheat, and to
release noxious smoke; remove the power immediately as a precaution and do not
approach the pump at least until you have provided ventilation to drive out the smoke.
Take care not to breathe in the fumes remaining inside the pump in the course of repair
work.
g. In case of fire, do not throw water on the pump. Switch the power off and use CO2
extinguishers.
h. Carefully inspect the flanges to ensure that there are no dust, oil, dirt or defects of the
mating surfaces, before making the required connections.
i. Ensure that all joints and couplings are locked correctly before starting the pump again
after repair work.

VACSOUND ECO – Operating and maintenance instructions
18
j. Do not wear any objects that may become entangled in the mechanisms and/or act as
conductors (chains, bracelets, etc.).
k. Ensure that the tools to be used are in perfect working condition and have insulating
grips, where necessary. Check that the insulating material of the cables and that the
conductors of the test equipment do not show any signs of damage.
l. Do not replace the oil immediately after stopping the machine as the oil may still be at
high temperature.
m. m. Perform repairs in clean and, where possible, dust-free areas. Protect all the
clearances of connection points with suitable plastic caps and cover the machined
surface areas of all parts stripped down up until they are put back on the pump again.
n. n. Do not start the pump if the protective sideplates (refs. 11 and 81 of fig. 2-1) are not
properly in place.
4.2.2 Caution notes
a. Before putting the pump back into operation after a breakdown, inspect it and check
carefully for any other signs of damage.
b. Use only tools that are in perfect working order and specially designed for the job; use
of inappropriate or ineffective tools may cause serious damage.
c. Perform repairs in clean and, where possible, dust-free areas. Protect all the clearances
of connection points with suitable plastic caps and cover the machined surface areas of
all parts stripped down up until they are put back on the pump again.
d. Always check the lubricant and that it is properly distributed through the pump;
inadequate lubrication may damage the pump seriously.
e. Give the parts some form of marking as you strip them down to ensure that you
reassemble them again in the proper order.
f. Check that there are no scratches or grooves on the machined shafts, in their seats
inside the pump or on machine-ground surfaces. Slight scratches and abrasions may be
eliminated with very fine emery paper or by a little light grinding.
g. Before putting a group together, always spread a little oil over inner parts and mating
surfaces. Replace all seals with original spare parts before reassembling components.
4.3 Maintenance actions
Maintenance may be seen as the totality of all scheduled and unscheduled maintenance
work.
Maintenance includes:
a. Scheduled maintenance: maintaining the nominal state of operation;
b. Unscheduled maintenance: restoring the nominal state of operation.
NOTE: The frequency with which repairs are performed depends on the process and
presence of substances that shorten pump life (dust, abrasives, solvents, water, chemically
aggressive substances).
The pump must be cleaned at regular intervals of time. Use only the strictly necessary
amount of lubricant; an excess of lubricating oil, like when there is none, may sometimes
compromise proper operation of the pump. Only the recommended lubricants, or lubricating
oils with similar characteristics and known and experimented quality, should be used.
Oil changes must be made with the oil at a sufficiently high temperature, after leaving the
pump to cool for a few minutes following operation. The drain and filler plugs must not be
left open any longer than is strictly necessary.

VACSOUND ECO – Operating and maintenance instructions 19
When performing maintenance, look out for all signals that may precede a breakdown, in
particular:
• traces of corrosion;
• oil leaks;
• slack joints or couplings.
Maintenance technicians must:
• be aware of all applicable national directives concerning accident prevention during work
on motor-driven pumps and should know how to apply them;
• have read and understood all the sections on “Safety Rules ";
• be familiar with the essential design features and operation of the pump;
• know how to use and consult the pump documentation;
• be concerned about proper operation of the pump;
• make a note of any irregularities in operation of the pump and take the necessary
action, where appropriate.
Use original spare parts wherever possible and repair a broken part as best as possible on
site or send it back to the manufacturer for repairs.
For all problems arising, or to order spare parts, refer to our service department.
GALILEO TP Process Equipment
Via di Castelpulci, 17/M
50010 Badia a Settimo - FIRENZE (ITALY)
Tel. [phone]
Fax [phone]
e-mail: [email protected]
4.4 Lubricants
It will be readily understood how important adequate lubrication is to high technology
pumps like the GALILEO vacuum pumps. Correct use of appropriate lubricants makes a
significant contribution to achieving best performance and warding off defects.
When handling lubricants, the following sanitary protection measures should be observed at
all times:
• Avoid prolonged, excessive or repeated contact of the skin with products for lubrication,
and also avoid directly inhaling the fumes or vapors of such products.
• Protect the skin by wearing appropriate clothes and equipment (e.g. special suits,
glasses or, where permitted by the safety regulations, gloves) or by applying a special
protective product.
• Clean the skin carefully after contact with the lubricants by washing freely with water
and soap.
• Apply a skin cream after washing.
• Take off and change clothes or shoes on which oil has been spilled.
• Never put rags dripping with oil into the pockets of your clothes.
When disposing of waste lubricants, observe the following environment protection
regulations:
• The lubricants risk contaminating the water and the ground! Therefore never pour
lubricating products on to the ground, into water or in the sewage system. All violations
of these rules are liable to persecution as provided for by law. When using lubricants
always keep an oil can nearby.

VACSOUND ECO – Operating and maintenance instructions
20
• Take care in draining off waste oils. In disposal of these products respect all regulations
in force concerning waste oil disposal.
The recommended lubricating oil depends on the type and conditions of use.
ROTOIL ES-68: compatible with HFC steams.
ROTOIL SH-200: mineral oil of standard viscosity, for pumping of chemically inert vapors
and gases (SAE 30).
PROPERTY UNIT ROTOIL SH-200 ROTOIL ES-68
Specific weight (15°C) g/cm30.86 0,966
Kinematic viscosity 40°C
100°C
Cst
cSt
55
8.1
68
Index of viscosity 90 101
Vapour pressure 25°C Pa 1x10-3 ---
Fire point °C 244 260
Pour point °C - 15 -39
Table 4-1: Properties of ROTOIL oils
It is absolutely necessary to continue using the lubricants initially used to fill the tank. If
this is not possible for organizational or business reasons, use only products with the same
characteristics as the previous oils.
Only use of lubricants of suitable quality will guarantee safe operation of the pumps.
CAUTION: It is forbidden to mix different lubricants, because their composition and the
related additives are not the same.
If you expect to have to use other lubricants, first find out if the two products are
compatible. In cases of doubt, the lubricant used up to that time must be flushed out by
way of a pump flushing procedure.
CAUTION: To avoid the risk of contaminating the oil, absolute cleanliness of the pump and
surrounding area must be ensured during the lubrication procedures.
4.5 Scheduled maintenance cards
N° FREQUENCY PUMP STATUS (*) OPERATION
1 MONTHLY R OIL LEVEL CHECKING
2 TWICE YEARLY S CLEANING THE SUCTION FILTER
(*) R = Running S = Stopped
Table 4-2 List of Scheduled Maintenance Cards
NOTE: When the pump is equipped with a condensation separator on the suction side these
items must also be maintained, by following the Manufacturer’s instructions.
NOTE: The numbers used in the drawings on the Scheduled Maintenance Cards are those
used in Figure 2-1 View of the pump.