Agilent Technologies PHV K Series Manual

Doc. n. LI 3488.00 EN (translation)
Vacuum pump
PHV K Series
OPERATING AND MAINTENANCE INSTRUCTIONS
NOTICE: This document contains references to
P.V.R. Please note that P.V.R. s.r.l. is now part of
Agilent Technologies. For more information, go to
www.agilent.com/chem/vacuum.
Agilent Technologies Italia S.p.A. Vacuum Products Division
Via Santa Vecchia, 107 - 23868 Valmadrera (LC) ITALY
NOTICE: This document contains references to
P.V.R. Please note that P.V.R. s.r.l. is now part of
Agilent Technologies. For more information, go to
www.agilent.com/chem/vacuum.
Agilent Technologies Italia S.p.A. Vacuum Products Division
Via Santa Vecchia, 107 - 23868 Valmadrera (LC) ITALY
NOTICE: This document contains references to
P.V.R. Please note that P.V.R. s.r.l. is now part of
Agilent Technologies. For more information, go to
www.agilent.com/chem/vacuum.
Agilent Technologies Italia S.p.A. Vacuum Products Division
Via Santa Vecchia, 107 - 23868 Valmadrera (LC) ITALY
NOTICE: This document contains references to
P.V.R. Please note that P.V.R. s.r.l. is now part of
Agilent Technologies. For more information, go to
www.agilent.com/chem/vacuum.
Agilent Technologies Italia S.p.A. Vacuum Products Division
Via Santa Vecchia, 107 - 23868 Valmadrera (LC) ITALY
NOTICE: This document contains references to
P.V.R. Please note that P.V.R. s.r.l. is now part of
Agilent Technologies. For more information, go to
www.agilent.com/chem/vacuum.
Agilent Technologies Italia S.p.A. Vacuum Products Division
Via Santa Vecchia, 107 - 23868 Valmadrera (LC) ITALY
NOTICE: This document contains references to
P.V.R. Please note that P.V.R. s.r.l. is now part of
Agilent Technologies. For more information, go to
www.agilent.com/chem/vacuum.
Agilent Technologies Italia S.p.A. Vacuum Products Division
Via Santa Vecchia, 107 - 23868 Valmadrera (LC) ITALY
NOTICE: This document contains references to
P.V.R. Please note that P.V.R. s.r.l. is now part of
Agilent Technologies. For more information, go to
www.agilent.com/chem/vacuum.
Agilent Technologies Italia S.p.A. Vacuum Products Division
Via Santa Vecchia, 107 - 23868 Valmadrera (LC) ITALY
NOTICE: This document contains references to
P.V.R. Please note that P.V.R. s.r.l. is now part of
Agilent Technologies. For more information, go to
www.agilent.com/chem/vacuum.
Agilent Technologies Italia S.p.A. Vacuum Products Division
Via Santa Vecchia, 107 - 23868 Valmadrera (LC) ITALY
NOTICE: This document contains references to
P.V.R. Please note that P.V.R. s.r.l. is now part of
Agilent Technologies. For more information, go to
www.agilent.com/chem/vacuum.
Agilent Technologies Italia S.p.A. Vacuum Products Division
Via Santa Vecchia, 107 - 23868 Valmadrera (LC) ITALY
NOTICE: This document contains references to
P.V.R. Please note that P.V.R. s.r.l. is now part of
Agilent Technologies. For more information, go to
www.agilent.com/chem/vacuum.
Agilent Technologies Italia S.p.A. Vacuum Products Division
Via Santa Vecchia, 107 - 23868 Valmadrera (LC) ITALY
NOTICE: This document contains references to
P.V.R. Please note that P.V.R. s.r.l. is now part of
Agilent Technologies. For more information, go to
www.agilent.com/chem/vacuum.
Agilent Technologies Italia S.p.A. Vacuum Products Division
Via Santa Vecchia, 107 - 23868 Valmadrera (LC) ITALY
NOTICE: This document contains references to
P.V.R. Please note that P.V.R. s.r.l. is now part of
Agilent Technologies. For more information, go to
www.agilent.com/chem/vacuum.
Agilent Technologies Italia S.p.A. Vacuum Products Division
Via Santa Vecchia, 107 - 23868 Valmadrera (LC) ITALY

PHV K Series
2 Doc. n. LI 3488.00 ENG (translation)
Via Santa Vecchia, 14
23868 Valmadrera (Lecco) – Italy
Tel. [phone]
Fax [phone]
GENERAL INDEX
1 GENERAL INFORMATION............................................................................................................................................................................3
2 PRODUCT SPECIFICATIONS.......................................................................................................................................................................3
2.1 Pump description..................................................................................................................................................................................3
2.2 Expected use........................................................................................................................................................................................4
2.3 Forbidden use.......................................................................................................................................................................................4
2.4 Protections............................................................................................................................................................................................4
2.5 Accessories ..........................................................................................................................................................................................4
2.6 Weight and dimensions.........................................................................................................................................................................5
2.7 Technical features.................................................................................................................................................................................7
3 SAFETY RULES............................................................................................................................................................................................8
4 TRANSPORT – HANDLING ..........................................................................................................................................................................9
4.1 Lifting ...................................................................................................................................................................................................9
4.2 Unpacking and components control ......................................................................................................................................................9
4.3 Storage.................................................................................................................................................................................................9
5 INSTALLATION AND OPERATION ..............................................................................................................................................................9
5.1 Location................................................................................................................................................................................................9
5.2 Connection to the machine..................................................................................................................................................................10
5.3 Discharge air pipiline installation.........................................................................................................................................................10
5.4 Electric connection..............................................................................................................................................................................10
5.5 Commissioning...................................................................................................................................................................................11
5.6 Suggestions for the use ......................................................................................................................................................................11
5.7 Water vapour suction..........................................................................................................................................................................11
6 SERVICING .................................................................................................................................................................................................12
6.1 General information ............................................................................................................................................................................12
6.2 Oil control............................................................................................................................................................................................12
6.3 Oil change...........................................................................................................................................................................................12
6.4 Inlet filter cleaning...............................................................................................................................................................................13
6.5 Motor disassembly and re-assembling ...............................................................................................................................................13
6.6 How to replace the oil seal ring...........................................................................................................................................................15
6.7 Control and replacing of the discharge valve.......................................................................................................................................19
6.8 Checking the inlet valve ......................................................................................................................................................................21
6.9 Pump overhaul....................................................................................................................................................................................23
6.10 Spares necessary for the normal servicing..........................................................................................................................................23
6.11 How to order spare parts.....................................................................................................................................................................23
7 LUBRICANTS..............................................................................................................................................................................................23
8 DE-COMMISSIONING AND DISPOSAL .....................................................................................................................................................23
9 RETURN FOR REPAIR ...............................................................................................................................................................................23
10 TROUBLESHOOTING ................................................................................................................................................................................24
ANNEX:
Exploded view and spare parts list
MANUFACTURER

PHV K Series
ENG (translation) Doc. n. LI 3488.00 3
1 GENERAL INFORMATION
This manual contains information necessary for the proper operation of the pump in order to prevent unsuitable use
and for the safety of the operators.
Do not attempt any other type of operation without having first contacted our Service Department.
The information provided herewith does not intend to replace, integrate or change any rules, regulations, law by
decree, directive or law of specific character in force in the Country where the installation takes place.
The suggestions given to the staff engaged in the installation and servicing assumes that the personnel is expert
and prepared in facing any problem of servicing, both mechanical and electrical.
For any questions or information not included in this manual, please contact our Service Department, always
providing: model (type), serial number, year of manufacture, stated on the name plate.
In the manual two symbols are used:
ATTENTION:
Instructions that, if not followed, could result in serious personal injuries.
WARNING:
For instructions that, if not followed, could cause damages to the machine..
Hot surfaces
Electrical danger
2 PRODUCT SPECIFICATIONS
2.1 Pump description
PHV K pump series are rotary vane oil lubricated two stage vacuum pumps.
The flanged electric motor is coupled by means of an elastic coupling.
The cooling is made by means of forced air by a centrifugal fan.
At the inlet there is a mesh filter in order to protect the pump from solid parts.
An integrated non-return valve prevents the oil from going back and the return of air in the camber to be pumped
down during the stop phase.

PHV K Series
4 Doc. n. LI 3488.00 ENG (translation)
The separation of oil smokes from discharged air takes place in the TMF oil mist filter (optional). The filtered oil is
recovered automatically by the pump by precipitation (this take place when the machine is not working or during its
operation at the maximum vacuum, i.e. inlet is closed).
A three position adjustable gas ballast valve prevents the condensation inside the pump when small vapour quanti-
ties are sucked.
Pumps starting from size PHV 120 are equipped with a water cooling circuit.
2.2 Expected use
The vacuum pumps described in this manual can pump only air and small quantity of water vapour.
They are suitable to evacuate closed systems or to operate at a constant vacuum till 1x10
-3
mbar.
The ambient temperature and the inlet temperature must be included between 12 and 40 °C. In case you get tem-
peratures outside this range, please get in touch with us.
The suction or other types of gas or vapours must be declared in advance to P.V.R. that will give the conformity to
the specific use.
2.3 Forbidden use
ATTENTION:
It is forbidden to suck through the pump:
Liquids or solid substances;
Dangerous, explosive or aggressive gas and vapours;
It is forbidden to use the discharge of the pump to create even limited pressures.
It is forbidden to install the pump in a potentially explosive ambient.
2.4 Protections
The pump must be protected against suction of dust and liquids.
For applications where this protection is not warranted it is recommended to install a pressure gauge on the oil tank
for a visual control of the oil separator blockage.
The pump is supplied without control panel. The electric motor must be protected according to the regulations in
force.
ATTENTION:
In case of applications where the pump stop or failure can cause damages to people or things, safety measures for
the system must be provided.
2.5 Accessories
The following accessories useful for the installation and the operation are available:
- external inlet filter
- discharge oil mist trap type TMF
- vacuum gauges/ vacuum switches
- pressure gauges / pressure switches
- pipe fittings

PHV K Series
ENG (translation) Doc. n. LI 3488.00 5
2.6 Weight and dimensions
PHV 5-10-20-30 K
PHV 50-75 K
MODEL A B C D E F G H I J K N S M L
PHV50K 250 185 387 30 50 368 80 255 370 305 550 428
Ø14 281 709
PHV75K 280 185 441 30 50 412 85 295 415 355 600 479
Ø14 312 791
MODEL A B C D E F G H I J K N S M L
PHV5K 170 120 261 24 40 247 45 130 253 94 240 244
Ø9 210 454
PHV10K 170 120 261 24 40 247 45 155 253 94 240 269
Ø9 210 479
PHV20K 210 140 297 40 50 282 55 180 288 147 310 309
Ø12 234 543
PHV30K 210 140 297 40 50 282 58 210 288 147 310 242
Ø12 234 576

PHV K Series
6 Doc. n. LI 3488.00 ENG (translation)
PHV 120-180-270-360K
ISO FLANGE DIMENSIONS
MODEL A B C D E F G H I J K S L
PHV120K 320 230 501 40 65 414 193 175 465 348 740
Ø14 974
PHV180K 400 305 575 58 75 490 195 200 528 375 805
Ø18 1101
PHV270K 400 305 645 58 75 560 203 250 598 433 895
Ø18 1179
PHV360K 550 415 771 76 110 686 258 225 714 458 1040
Ø18 1377
STANDARD A B N D
ISO40 Ø 100 Ø 80 4 M8
ISO63 Ø 130 Ø 110 4 M8
ISO100 Ø 165 Ø 145 8 M8

PHV K Series
ENG (translation) Doc. n. LI 3488.00 7
2.7 Technical features
DESCRIPTION PHV5K PHV10K PHV20K PHV30K PHV50K PHV75K
Nominal capacity 50Hz m
3
/h 5 10 20 30 50 75
60Hz m
3
/h 6 12 24 36 60 90
Ultimate pressure
Gas ballast C
mbar
1x10
-3
Gas ballast I 7x10
-3
Gas ballast II 1x10
-2
H2O max. vapour pressure Mbar 53 53 33 33 53 53
Oil charge Litre 1.1 1.2 2.0 2.3 4.5 6.5
Inlet DN 25KF 40KF
Discharge DN 25KF 40KF
Motor power kW 0.37 0.75 1.5 2.2
Revolutions number 50Hz R.P.M 1400
60Hz 1700
Noise level (closed gas ballast valve) dB (A) 50 50 52 52 56 56
Total weight kg 21 22.5 38 41 68 84
DESCRIPTION
PHV120K PHV180K PHV270K PHV360K
Nominal capacity 50Hz m
3
/h 120 180 270 360
60Hz m
3
/h 144 216 324 432
Ultimate pressure Closed gas ballast valve mbar 1x10
-3
Open gas ballast valve 7x10
-3
Oil charge Litre 11 16 17 28
Inlet DN ISO63 ISO100
Discharge DN ISO63 ISO100
Motor power kW 4 5.5 7.5 11
Revolutions number 50Hz R.P.M 1400
60Hz 1700
Water cooling (lower than 20℃
℃℃
℃) L/min 6 8
Total weight kg 172 290 358 584

PHV K Series
8 Doc. n. LI 3488.00 ENG (translation)
3 SAFETY RULES
ATTENTION:
Despite of all the precautions adopted when designing the equipment, there are some risk elements that arise dur-
ing operation and servicing.
HOT SURFACES
The temperature of the pump surfaces may exceed 80°C.
Install the pump in a protected area accessible only by authorized personnel, to prevent possible personal injures
by coming into contact with hot surfaces. The pump can be placed inside other machines by adopting the neces-
sary safeguards. Before carrying out any maintenance on the pump, be sure the pump is cold.
HARMFUL SUBSTANCES EMISSION
The discharged air contains part of traces of oil mist. Check the compatibility with the work environment. A failure or
the seals wear can cause an oil leakage. Avoid the dispersion to the ground and the pollution of other materials. In
case air containing dangerous substances must be pumped down (for example, biological or microbiological
agents), adopt filtering systems before introducing air in the work environment.
Used oil coming from the pump must be disposed of in accordance with the regulations in force in the Country of
use.
Do not dispose into the environment.
HAZARD CAUSED BY VACUUM
Avoid the contact with the pump inlet port during the pump operation.
Introduce air in the inlet circuit before every operation.
The contact with parts under vacuum can cause injuries.
HAZARD CAUSED BY PRESSURE
The pump tank is pressurized. Do not open the oil filling and discharge plugs during operation.
FOR A SAFE MAINTENANCE
All maintenance operations must be carried out with the pump idle, disconnected from the electrical supply, with
the pump cold, vented to atmospheric pressure. Prevent unexpected start-up (e.g. block the power switch with a
personal lock).
ELECTRIC SAFETY
Some components of the electric equipment are electrically charged during operation whose contact may cause
serious injuries to persons or objects.
Connection and control of the electric system must be carried out by skilled personnel only.
The electric equipment must comply with the EN 60204-1 standard and with the other laws in force in the Country
of use.
Besides, electric equipment must comply with EN 61000-6-4 and EN 61000-6-2 standards concerning electromag-
netic compatibility and electromagnetic immunity for industrial environments.

PHV K Series
ENG (translation) Doc. n. LI 3488.00 9
FIRE HAZARD
The use of the pump for situations unforeseen or not recommended by this manual, as well as lack of correct
maintenance, may create high risks for overheating or fire.
In case of a fire do not use water to extinguish but use a powder CO2 extinguisher or other means compatible with
the electric equipment and lubricating oil.
4 TRANSPORT - HANDLING
4.1 Lifting
The orientation of the packed components must correspond to the instructions given by the pictograms on the ex-
ternal covering of the packaging.
For the unloading use a lifting equipment suitable for the pump weight.
Use the suitable lifting eyebolts to lift the pump.
4.2 Unpacking and components control
When receiving the machine, check that the packing is intact or if is shows signs of damages occurred during
transportation.
If there is no damage, proceed to the unpacking and check further the machine.
In case damages are found, inform immediately P.V.R. and the carrier.
4.3 Storage
The pumps must be stored or transported without oil and protected from the atmospheric agents at a temperature
between -15°C and 50°C (normal humidity rate).
5 COMMISSIONING
5.1 Location
The pump must be installed in a protected area (see safety rules).
It must be fastened with support feet on horizontal plane.
It must be accessible for correct and easy maintenance, by respecting the minimum distances from possible
obstructions.
It must be accessible to suitable lifting equipment.
Ensure the change of air in the room or inside the machine where the pump has to been installed. To assure a
sufficient cooling, avoid to overpass 40°C of ambie nt temperature.
The pump must be protected against jets or sprays of water that may penetrate the tank through the exhaust
port.
Whenever the pump is installed outside, it must be protected against atmospheric agents and it must be used
with an oil suitable for low temperature (see lubricants table).
Avoid warm air coming from the exhaust or the cooling fans causing discomfort to the personnel.

PHV K Series
10 Doc. n. LI 3488.00 ENG (translation)
5.2 Connection to the machine
Inlet and discharge ports should be connected to the system using clamps according to International Stand-
ards.
Make sure the pipes and the flanges are clean.
Use pipes as much as short and thick as possible, having at least the same diameter as the one of their ports.
Max. pressure of the oil is 1,5 Kg/cm
2.
Make sure the pipes and the flanges are vacuum tight, i.e. there isn’t any vacuum leakage.
5.3 Discharge air pipeline installation
When required, it is possible to pipe the pump discharge air to other rooms, or outside.
Use pipes with the same diameter as the tank discharge port with a maximum length of 15 m.
For longer pipes increase pipe diameter.
Pipe weights must not rest on the pump.
In the final length use flexible pipes or pipe fittings .
WARNNG:
this pipe must be descending, to avoid the condensate going back to the tank.
Do not connect ball valves to this pipeline.
5.4 ELECTRIC CONNECTION
The control panel and electric connections must be carried out by skilled personnel and conform to the EN
60204-1 rules or other local regulations in the Country of use.
The electric equipment must comply with EN 61000-6-4 and EN 61000-6-2 standard concerning electromag-
netic compatibility, emission standard and immunity for industrial environments.
Check the main voltage and frequency in use to correspond to the data stamped on the motor name plate.
The electric motor must be protected against overload. The full load amperage value on the motor name plate
must be considered when sizing the electrical components and motor protection against overloading.
Make sure the grounding is correctly done.
Carry out the electric connection following the diagram shown on the motor terminal box.
Check direction of rotation of the motor:
1. Open the inlet and discharge ports.
2. Lay the transport protection caps on the inlet port.
3. Switch the pump on for 2 to 3 seconds checking that the plastic cap get tight on the inlet port.

PHV K Series
ENG (translation) Doc. n. LI 3488.00 11
5.5 Commissioning
Before using the pump, carry out the following operations:
Check the oil level through the sight glass, if necessary fill it up.
Make sure there isn’t any oil leaks.
WARNING
The operation without lubricant causes serious damages to the pump.
WARNING:
An oil quantity larger than the necessary one may damage the pump or the electric motor.
5.6 Suggestions for the use
In case of suction in presence of permanent gases, the pump can operate with the gas ballast valve closed.
In presence of condensable vapours, it is advisable to let the pump run with closed inlet port until the operative
temperature is achieved (about 5 minutes).
Before switching the pump off, let the pump run at maximum vacuum for at least thirty minutes with the gas bal-
last valve in position open, to eliminate any condensate in the oil.
In case of temporary stop, close the inlet and let the pump run until getting back to work.
WARNING:
Avoid operating pump for long periods with inlet port vented to atmospheric pressure.
Avoid frequent stop-starting, as this will lead to premature coupling elastic element wear.
It is advisable not to exceed 10 starting/hour.
For more frequent starting, it is recommended to install a progressive starter (soft starter) or a star/delta starter.
When using a star/delta starter, the vacuum pump can start exclusively with the inlet vented to atmospheric pres-
sure.
5.7 Water vapour suction
In order to pump down water vapour it is essential to take the pump temperature to its operating value letting it run
for thirty minutes at maximum vacuum. In case there are other condensate in the oil, let the pump run at maximum
vacuum for at least thirty minutes.
It is advisable to carry out this operation before stopping the pump for a long time. The gas ballast valve will allow
the elimination of water condensate from the lubricating oil.

PHV K Series
12 Doc. n. LI 3488.00 ENG (translation)
6 SERVICING
6.1 General information
ATTENTION
Before every maintenance operation:
Ensure the pump insulation from the electric network so that the
pump can’t automatically start.
Make sure the pump has reached a non-dangerous temperature.
Introduce air in the suction circuit
The exhausted oil and the replaced spare parts must be considered as
special waste products and handled according to the regulations in force
in the Country of use.
6.2 Oil control
The oil level can be checked through the level sight glass
placed in the rear part of the pump; in case of oil shortage, fill
it up through the suitable plugs.
The oil condition can be checked visibly, the oil in good condi-
tion is clean and limpid. If the oil becomes dark, change it.
6.3 Oil change
For a correct operation, oil change should be done when the
pump is still warm.
Use only the recommended oil types.
WARNING:
Use protective gloves to avoid injury caused by heat.
Oil should be changed as follows:
After the first 100 working hours, if it is polluted.
Next change, every 2000 ÷ 3000 working hours;
When vacuum level decreases.
To change the oil, follow these steps:
a) Switch the pump off.
b) Drain the exhausted oil in the special containers by open-
ing the drain valve or the discharge plug.
c) Drain the exhausted oil remains by running the pump for
a short period (10 seconds maximum) with the inlet port
and the oil drain valve open.
d) Go on making the pump run by filling with fresh oil from
the inlet port in to remove the last impurities.
e) Stop the pump, close the oil drain valve or the oil dis-
charge plug and fill with fresh oil from the provided plugs in.
Oil discharge
Oil filling Inlet
Oil filling
Oil discharge
Inlet

PHV K Series
ENG (translation) Doc. n. LI 3488.00 13
6.4 Inlet filter cleaning
The cleaning depends on the ambient where the pump operates.
Remove the filter from the inlet port and clean it by means of compressed air. Replace the filter if it is damaged.
.
6.5 Motor disassembly and re-assembling
Models 5 ÷ 75
Disassembly
a) Make sure that the power supply is provided with a switch and
that the pump is perfectly not operating and at atmospheric
pressure.
b) Loosen the two motor lower screws;
c) Fasten the motor in order to avoid its fall;
d) Loosen the two upper screws;
e) Remove the motor and the flange from the pump;
f) Remove the coupling element from the fan;
g) Loosen the fan screw;
h) Make the fan slide along the motor shaft;
i) Remove the gasket from the motor flange;
j) Loosen the four screws of the motor flange and remove the motor from the flange itself.
Re-assembling
a) Make sure that all the parts are clean and check their condi-
tions;
b) Fix the motor to the flange by means of the four screws;
c) Fit the gasket to the motor flange
d) Fit the motor and the fan by making them slide axially. Avoid
sudden or forced movements to prevent the coupling surfaces
from being damaged;
e) Fix the fan to the motor shaft by means of its screw;
f) Insert the coupling element on the fan;
g) Assemble the motor and the pump and tighten the four
screws.
Accoppiamento
Vite
Motore
Corpo pompa
Screw
Screw
Fan
Gasket
Washer
Nut
Motor flange Motor
Coupling
screw
Motor
Pump body

PHV K Series
14 Doc. n. LI 3488.00 ENG (translation)
Models 120 ÷ 360
Disassembly
a) Make sure that the power supply is provided with a switch and that the pump is perfectly not operating and
at atmospheric pressure.
b) Loosen the two motor lower screws;
c) Fasten the motor in order to avoid its fall;
d) Loosen the two upper screws;
e) Remove the motor and the gasket from the motor flange;
f) Remove the two pins;
g) Loosen the motor flange screws;
h) Remove the motor flange from the oil tank.
Re-assembling
i) Make sure that all the parts are clean and check their conditions;
j) Fix the motor flange to the tank tightening the four screws;
k) Assemble the two pins on the motor flange;
l) Fit the motor and the gasket by making them slide axially. Avoid sudden or forced movements to prevent
the coupling surfaces from being damaged.
m) Tighten the four screws.
Gasket
Screw
Motor
Body of pump
Motor flange
Screw
Body of pump
Pin
Fan

PHV K Series
ENG (translation) Doc. n. LI 3488.00 15
6.6 How to replace the oil seal ring
Model 5 ÷ 30
Disassembly
a) Check that the power supply is provided with a switch and that the pump is perfectly not operating and at at-
mospheric pressure.
b) Drain the oil in a proper container by opening the drainage valve a.
c) Remove the motor form the pump unit (see 6.5).
d) Loosen oil tank screws band remove the tank from the pump housing.
e) Loosen the three screws cand remove the pump housing from the pump module with caution.
f) Loosen the screw d.
g) Loosen the screw eand remove the cover.
h) Extract the key from its seat on the rotor.
i) Loosen the two screws fof the pump housing rear cover and extract the first cylinder.
j) Extract the seeger ring gusing the suitable tools.
k) Extract the oil seal with caution.
f
-
screw
Drainage
valve cover
e
- screw
O-
ring
Oil seal ring
Gasket
g
–
Ring
Coupling half
Coupling disk
d
–screw
Rotor
Key Oil seal bushing
1°cylinder
Oil seal ring
a– Oil discharge
b
– screw
Oil tank
Pump module
Pump
housing
c
- screw

PHV K Series
16 Doc. n. LI 3488.00 ENG (translation)
Reassembly
Use the following oil seal rings:
•Models 5 and 10: D20 x 30 x 7
•Models 20 and 30: D25 x 35 x 7
a) Oil the external surface of the oil seal ring;
b) Insert the first cylinder having the seal set upwards.
c) Insert the seal in the first cylinder, with the writing upwards.
d) Push the seal towards the bottom of the cylinder by means of the assembly tool. Pay attention to not damage
the seal.
e) Reassemble the remaining parts by following the disassembly procedure backwards.
Tool
1°cylinder
Oil seal ring
Detail A
Detail B

PHV K Series
ENG (translation) Doc. n. LI 3488.00 17
Models 50 and 75
Disassembly
a) Check that the power supply is provided with a switch and that the pump is perfectly not operating and at at-
mospheric pressure.
b) Drain the oil in a proper container by opening the drain valve.
c) Remove the motor from the pump (see 6.5)
d) Remove the coupling screw and extract the disk and coupling half.
e) Remove the key.
f) Unscrew the three screws of the cover and remove the cover.
g) Lay the cover on a plane and remove the seal with caution.
Reassembly
Use a seal D32 x 44 x 8
a) Oil the seal.
b) Insert the cover with the seal seat upwards.
c) Insert the new seal in the cover, with the writing downwards
d) Push to seal towards the bottom of seat by means of the suitable assembly
tool. Pay attention to not damage the seal.
e) Reassemble the remaining parts by following the disassembly procedure backwards.

PHV K Series
18 Doc. n. LI 3488.00 ENG (translation)
Models 120 ÷ 360
Disassembly
a) Check that the power supply is provided with a switch and that the pump is perfectly not operating and at at-
mospheric pressure.
b) Drain the oil in a proper container by opening the drain valve.
c) Remove the motor from the pump (see 6.5)
d) Extract the coupling half.
e) Unscrew the coupling screw and extract the disk and the fan.
f) Extract the key from the rotor.
g) Unscrew the screws from the cover and extract the cover.
h) Lay the cover on a plane and remove the seal with caution.
Reassembly
Use the following seals:
•Model PHV K 120: D40 x 60 x 10
•Models PHV K 180 270: D55 x 70 x 8
•Models PHV K 360: D65 x 85 x 13
a) Oil the seal.
b) Insert the cover with the seal seat upwards.
c) Insert the seal in the cover, with the groove upwards.
d) Push to seal towards the bottom of seat by means of the suitable assembly tool. Pay attention to not damage
the seal;
e) Reassemble the remaining parts by following the disassembly procedure backwards.

PHV K Series
ENG (translation) Doc. n. LI 3488.00 19
6.7 Control and replacing of the discharge valve
Models 5 ÷ 75
a) Check that the power supply is provided with a switch and that the pump is perfectly not operating and at at-
mospheric pressure.
b) Drain the oil in a proper container by opening the drain valve or the discharge plug.
c) Remove the tank from the pump by loosening the assembly screws.
d) Loosen the screws or the nuts of the drain valve.
e) Extract the discharge valve cover and the filter.
f) Loosen the screw/s of the valve.
g) Extract the valve catcher and the valve plate.
h) Clean the parts and change the valve plate, if it has been damaged.
i) Reassemble the remaining parts by following the disassembly procedure backwards.
PHV 5/10/20/30 K PHV 50/75 K

PHV K Series
20 Doc. n. LI 3488.00 ENG (translation)
Models 120 ÷ 360
a) Check that the power supply is provided with a switch and that the pump is perfectly not operating and at at-
mospheric pressure.
b) Drain the oil in a proper container by opening the drain valve or the discharge plug.
c) Remove the inlet port, the gas ballast valve and the upper cover.
d) Unscrew the nuts and remove the valve covers.
e) Unscrew the screws and remove the valve catcher and the valve plate.
f) Clean the parts and change the valve plates, if damaged.
g) Reassemble the remaining parts by following the disassembly procedure backwards.