Ulvac DOP-301SB User manual

No. 20D00-2-01-3
Original instructions
INSTRUCTION MANUAL
Oscillating Piston Dry Vacuum Pump
DOP-301SB/SVB
Request to Users
Please read this manual thoroughly to ensure safe and
effective use of the equipment.
Keep this manual in a safe place.
Due to periodic improvements in performance, the
equipment described in this manual is subject to changes
in dimensions and specifications without prior notice.
ULVAC KIKO, Inc.
DOP-301SB DOP-301SVB

We,
Company:ULVAC KIKO,Inc.
of
Address:291-7 Chausubaru Saito-city,Miyazaki (ZIP Cord:881-0037) Japan.
This declaration is issued under the sole responsibility of the manufacturer.
In accordance with the following Directive:
2006/42/EC
Machinery Directive
2011/65/EU+(EU)2015/863
RoHS Directive
declare under our sole responsibility that the product,
Type of Product
:
Oscillating Piston Type Dry Vacuum Pump
Model Name
:
DOP-400SA，DOP-301SA，DOP-301SB
DOP-301SVB，DOP-301SB-01，DOP-301SB-02
to which this declaration related is in conformity with the following standards:
EN 1012-2:1996+A1:2009
Compressors and vacuum pumps – Safety requirements, Part2. Vacuum pumps
IEC EN 61010-1:2010+A1:2019
Safety requirement for electrical equipment for measurement, control and laboratory use
Part1.General requirement
following the provisions of
The person stated below will keep the following technical documentation:
operating and maintenance instructions
technical drawings
description of measures designed to ensure conformity
other technical documentation, e.g. quality assurance measures for design and production
Person authorized to compile the technical file:
( Name and address) Chris Goebel
ULVAC GmbH
Klausnerring 4 85551 Kirchheim b. München, Germany
31.Mar, 2023
Makoto Uchimura
Miyazaki , Japan
Development manager
(date & place)
(name, function, signature)
Declaration of Conformity

We,
Company:ULVAC KIKO,Inc.
of
Address:291-7 Chausubaru Saito-city,Miyazaki (ZIP Cord:881-0037) Japan.
This declaration is issued under the sole responsibility of the manufacturer.
In accordance with the following Directive:
Supply of Machinery (Safety) Regulations 2008
(S.I. 2008 No. 1597, as amended by S.I. 2019 No. 696)
The Restriction of the Use of Certain Hazardous Substances in Electrical and
Electronic Equipment Regulations 2012 (S.I. 2012 No. 3032)
declare under our sole responsibility that the product,
Type of Product
:
Oscillating Piston Type Dry Vacuum Pump
Model Name
:
DOP-400SA，DOP-301SA，DOP-301SB
DOP-301SVB，DOP-301SB-01，DOP-301SB-02
to which this declaration related is in conformity with the following standards:
BS EN 1012-2:1996+A1:2009
Compressors and vacuum pumps – Safety requirements, Part2. Vacuum pumps
BS IEC EN 61010-1:2010+A1:2019
Safety requirement for electrical equipment for measurement, control and laboratory use
Part1.General requirement
following the provisions of
The person stated below will keep the following technical documentation:
operating and maintenance instructions
technical drawings
description of measures designed to ensure conformity
other technical documentation, e.g. quality assurance measures for design and production
Person authorized to compile the technical file:
( Name and address) Chris Goebel
ULVAC GmbH
Klausnerring 4 85551 Kirchheim b. München, Germany
31.Mar, 2023
Makoto Uchimura
Miyazaki , Japan
Development manager
(date & place)
(name, function, signature)
Declaration of Conformity

Contents
Pages with a shaded background are those which contain items related to safety.
0．Before Using the Equipment.........................................................................................................01
0.1 Checks When Opening Packaging.......................................................................................02
0.2 Using the Pump Safely.........................................................................................................03
･Safety icons............................................................................................................................03
･Cautions for Safety in Use......................................................................................................04
1. Product Outline...............................................................................................................................1
1.1 Purpose of Use and Prohibitions .........................................................................................1
1.2 Specifications ......................................................................................................................1
1.3 Thermal Protector................................................................................................................2
2. Dimensions ....................................................................................................................................2
3. Installation and Storage..................................................................................................................3
3.1 Cautions for Installation and Storage...................................................................................3
3.2 Environmental Conditions for Installation, Storage, and Operation......................................4
3.3 Location...............................................................................................................................4
3.4 Operational Checks Following Installation ...........................................................................4
3.5 Fluctuations in the power voltage and frequency.................................................................5
3.6 Piping..................................................................................................................................5
3.7 Storage................................................................................................................................5
4. Cautions for Operation ...................................................................................................................6
4.1 Cautions for Operation.........................................................................................................6
4.2 Operation of the Thermal Protection Relay..........................................................................6
4.3 Starting in Cold Weather......................................................................................................6
5. Pump Performance.........................................................................................................................6
5.1 Pressure Achieved ..............................................................................................................7
5.2 Evacuation Rate..................................................................................................................7
5.3 Power Requirements...........................................................................................................7

6. Maintenance, Inspection, and Repair .............................................................................................7
6.1. Cautions for Maintenance, Inspection, and Repair...............................................................8
6.2 Maintenance........................................................................................................................8
6.3 Regular Inspections.............................................................................................................8
6.4 Replacing Consumables and Cleaning................................................................................9
1) Preparations for Replacing the Pump Parta...................................................................10
2) Removing the Head Cover ............................................................................................11
3) Removing the Cylinder ..................................................................................................12
4) Removing the Holder Plate, Cup Packing, and Inlet Valve Rubber Separator................12
5) Removing Small Cylinder Components .........................................................................13
6) Removing Small Holder Plate Components................................................................... 15
7) Replacing and Assembling Consumables...................................................................... 15
6.5 Troubleshooting List ..........................................................................................................18
7. In Conclusion................................................................................................................................19
･Warranty.................................................................................................................................19
･Usage Status Check Sheet
(used with requests for disassembly and repair)
･Product information, service bases, and contact information
Figures and Tables
Fig. 1.1 DOP-301SB.......................................................................................................................2
Fig. 1.2 DOP-301SVB ....................................................................................................................2
Fig. 3.1 Fluctuations in the power voltage and frequency...............................................................5
Fig. 3.2 Example of Piping Used When Evacuating a Vessel .........................................................5
Table 1.1 Product Specifications (50 Hz/60 Hz) ...............................................................................1
Table 6.1 Consumables List..............................................................................................................8
Table 6.2 Locations for Maintenance and Inspection.........................................................................9
Table 6.3 Troubleshooting List ........................................................................................................18

1
０．Before Using the Equipment
Thank you for purchasing this product. Your custom is very much appreciated.
This pump is only for vacuum pumping, and may malfunction or cause accidents if not handled
appropriately. Read the manual thoroughly, and pay due attention to inspections, maintenance, and
safety.
Personnel Handling the Equipment
Only persons who have read this manual thoroughly, and have sufficient understanding of
safety, pump specifications, and method of operation, may operate this pump.
Read the Manual Thoroughly
Read the manual thoroughly in order to use the equipment correctly. Read the section on
Safe Use particularly closely.
Keep This Manual in a Safe Place
After reading this manual, be sure to keep it in a safe place which is readily accessible to
others needing to use it.
Copying This Manual Is Prohibited
No part of this manual may be copied for use by a third party without the express
permission of the manufacturer.
Statutory Requirements for Disposal
Follow all statutory and local authority regulations when disposing of this pump.
Safety During Repair
Please provide a full description of the circumstances of use (particularly the use of
dangerous materials) for the safety of repair personnel when requesting the manufacturer
for repairs to the pump. Your request for repair may be refused if these circumstances are
unclear.
01

2
0.1 Checks When Opening Packaging
Check the following after opening the packaging.
(1) Is the product as you requested?
(2) Are the accessories and necessary parts included?
Standard accessories
・Instruction manual -------------------- x 1
・vent plug -------------------- x 1
・Silencer -------------------- x 1
(3) Is the pump damaged in any way?
(4) Are any external screws or inlet and outlet pipes loose? Are any components missing?
Contact your agent or the sales division of the manufacturer if there are any problems
with the pump.
1. Ensure that the tube on the side of the pump is not gripped or bent when removing
the pump from the packaging. Holding the pump by this tube may damage it, thus
reducing pump performance.
2. Always remove the vent plug before using the pump.
3. Fit an inlet filter if there is a possibility of foreign matter or dust particles entering the
pump.
4. Use ventilation holes, and fit a cooling fan, to reduce the temperature in the vicinity of
the pump. Ensure that the pump cooling fan inlet is not blocked. Ensure that a space
of at least 100mm is available on all sides of the pump.
DOP-301SB DOP-301SVB
!
Note
02

3
0.2 Using the Pump Safely
To ensure that the pump is handled correctly, read this section thoroughly before use.
This manual and the warning labels on the pump include safety icons as an aid to understanding
safety requirements.
These safety icons warn the operator and others of possible dangers and damage and should
always be followed.
・Safety icons
The meanings of the safety icons are as follows.
Incorrect handling of the equipment is very likely to result in death or serious injury to the
operator.
Incorrect handling of the equipment may result in death or serious injury to the operator.
Incorrect handling of the equipment may result in light or medium injuries to the operator or
damage to the equipment.
Incorrect handling of the equipment may result in damage to the equipment and hinder its
correct operation.
Some parts of the pump may reach temperatures of 60°C or more during operation.
Touching such components may result in burns.
Always switch off the main power supply before installing electrical wiring or performing
any electrical work on the pump. Failure to do so may result in electric shock.
The Inlet pipe of the pump
The Outlet pipe of the pump
!
Danger
!
Warning
!
Caution
!
Note
Electric Shock Caution
High temperature Caution
03

4
・Cautions for Safety in Use
Applications
(1) This pump is not designed to be explosion-proof, and should therefore not be used to
evacuate explosive gases.
(2) In addition to discharge of gas via the pump outlet, gas may leak from the pump itself.
Use it only with clean air at normal temperature, or gases of equivalent characteristics.
Maintenance and Repair
(3) When sending the pump to the manufacturer’s service division for dismantling and repair,
always note the type of gas that has been used on the 'Pump Usage Check Sheet'.
Installation
(1) Do not use the pump in an explosive atmosphere. Such use may result in injury and fire.
(2) Ensure that there are no inflammable materials such as solvents in the vicinity when
using the pump. Such use may result in fire.
(3) Ensure that the motor is freely ventilated to prevent overheating which may result in fire
or burns.
Power Supply
(4) Always switch off the main power supply, and make sure that the pump has stopped,
before carrying out inspection and repair.
(5) Ensure that the relevant wiring is in accordance with technical standards for electrical
equipment and wiring regulations. Incorrect wiring may result in fire.
(6) Always switch off the main power supply before installing electrical wiring. Carrying out
work on the pump while the power is connected may result in electric shock.
(7) Always ensure that the pump is correctly earthed. A dedicated earth leakage breaker is
recommended. Failure to earth the pump correctly may result in electric shock if a
malfunction or earth leakage occurs.
(8) Use the pump only at the rated voltage. Use at other than the rated voltage will interfere
with operation of the overload protection relay, and this may result in the motor burning
out, or fire.
(9) Do not damage/ modify/pull the power cord. Do not place objects on it. Damage to the
cord may result in electric shock or fire.
[Continued on next page]
!
Danger
!
Warning
04

5
Power Supply
(10)When attaching the main power cord to the pump, please use the power cord which meets
the rated voltage and current, pursuant to the provision.
4-Core-cable(Size of the wire lead: 1.0mm2or larger, 300V or more, 10A or more, 100°C
or higher, one earth cable included)
Ensure that one of the core wires is used as an earth wire.
Firmly attach the 6 - 12mm diameter Cable gland compatible
cable fitted with the appropriate terminals (M4 terminal block
screws) to a terminal block. Failure to follow these
requirements may result in electric shock.
Wiring and ground construction should be done subject to
your local law and the safety requirements.
The wire with insulation having an outer surface that is green with or without yellow
stripes is the grounding wire.
(11)Switch off the main power supply, and remove the power cord from the terminal block,
before disconnecting the power cord from the pump. Failure to do so may result in
electric shock.
(12)Touching the power cord with wet hands may result in electric shock.
(13)Touching electrical wiring etc while inserting the power cord may result in electric shock.
Operation
(14)This pump is not designed to be explosion-proof, and should therefore not be used in the
vicinity of inflammable substances (eg inflammable solvents) or in explosive
atmospheres. Failure to follow these requirements may result in injury or fire.
(15)Inserting fingers or objects into the motor inlet may result in electric shock, injury, or fire.
(16)Operating the pump with the discharge outlet blocked, or with a device which prevents
passage of gas to the discharge outlet, may result in rupture of the pump. The internal
pressure of the pump rises and the pump body may rupture and the motor become
overloaded. This pump is not designed to be pressure-resistant. The internal pressure of
the pump is limited to 0.03 MPa (gauge pressure).
Maintenance and Repair
(17)The pump should be dismantled or repaired only by a repair technician trained by the
manufacturer.
(18)To prevent ingestion of microscopic particles resulting from wear of components, use a
dust mask and gloves when replacing cup packing, inlet and outlet valves, and gaskets.
!
Warning
05

6
Installation
(1) To prevent back injuries, always use at least two people when lifting and moving the
pump.
(2) Microscopic particles resulting from wear of components are discharged from the outlet
and contaminate the room. If necessary, connect a pipe from the discharge outlet to the
outside of the building.
(3) The fine clearances used in this pump require that the following conditions be satisfied
during storage, installation, and operation.
1. Ambient temperature of 0-40°C and relative humidity of 85% or less during operation.
2. Other conditions for storage and operation
a) Level floor of sufficient strength
b) No condensation
c) Dust-free environment
d) Well ventilated
e) Environment free of corrosive or explosive gas
f) Not subject to direct sunlight
g) No danger of fire
h) Maximum ambient temperature of 40°C when
connecting the pump.
(4) Use ventilation holes, and fit a cooling fan, to reduce the temperature in the vicinity of the
pump. Ensure that the pump cooling fan inlet is not blocked. Ensure that a space of at
least 100mm is available on all sides of the pump.
Operation
(5) Touching rotating components (eg motor, main shaft, axial joints, cooling fan) while the
pump is in operation may result in injury.
(6) When the thermal protector operates, the pump will become extremely hot. Please do not
touch the pump. Touching the pump in that condition will cause burn injury. Turning off
the main power supply of the system, please contact us.
(7) Touching the motor while the pump is in operation or while it is still hot immediately after
having been switched off may result in burns.
(8) Inserting fingers or objects, or peering, into, the inlet or outlet during operation may result
in injury or malfunction.
[Continued on next page]
!
Caution
06
Use two persons
to hold here with
both hands.

7
Maintenance and Repair
(9) If the pump ceases operation, switch off the main power supply immediately to prevent
accidents, remove the power cord from the wall outlet, and contact your dealer or the
manufacturer for inspection and repair.
(10)After stopping the pump, leave it for 30 minutes or more and begin work on it only after
checking that it has cooled sufficiently. The interior of the pump is extremely hot
immediately after it has been switched OFF, and burns may result if it is touched in this
condition.
Installation
(1) Application of shock to the pump, or allowing it to fall over, may result in a malfunction.
(2) Do not grip or bend the tube on the side of the pump. Any damage to this tube may
reduce the performance of the pump.
(3) Fit an inlet filter if there is a possibility of foreign matter or dust particles entering the
pump.
Application
(4) This pump is not designed to be corrosion-resistant. It should only be used with clean air
at normal temperatures, or gases with equivalent characteristics.
(5) This pump is only for vacuum pumping. Use at near-atmospheric pressures for long
periods of time may result in a malfunction.
Operation
(6) Use the pump at an ambient temperature of 0 –40°C. The life of the pump will be
severely reduced if it is operated at high temperatures.
(7) Application of back pressure at the pump outlet will overload the motor and may prevent
the pump starting.
Maintenance and Repair
(8)This pump operates with precision clearances and therefore requires particular skill for
assembly. If a repair technician is not available, contact the manufacturer's service
division for replacement of consumables.
!
Note
!
Caution
07

1
1. Product Outline
1.1 Purpose of Use and Prohibitions
This product is a piston dry vacuum pump employing reciprocating motion of cup packing.
Observe the following prohibitions to ensure normal operation of the pump.
Prohibitions
(1) This pump is only for vacuum pumping, and must not be pressurized.
(2) Do not re-sell, repair, or modify this pump without the approval of the manufacturer.
(3) This pump is not designed to be corrosion-proof. Use it only with clean air at normal
temperature, or gases of equivalent characteristics.
(4) Do not attempt to evacuate gases containing particles, dust, water, or corrosive gases.
(5) Do not operate the pump for long periods at near-atmospheric pressure.
1.2 Specifications
Table 1.1 Product Specifications (50Hz/60Hz)
Model
DOP-301SB
DOP-301SVB
Evacuate rate (L/min)
300/330
Pressure achieved
(kPa)
8
Motor
3φ 200-220V 400W 4P 50/60Hz
3φ230V 400W 4P 60Hz
Fitted with thermal protection relay (automatic reset type)
Voltage, frequency
200V･50Hz
200V･60Hz
220V･50Hz
220V･60Hz
230V･60Hz
Rated current (A)
2.1
2.5
2.1
2.5
2.5
Speed (r.p.m.)
1470
1740
1470
1750
1750
Noise（dB(A) at 1m）
70 or less
(with Silencer)
Inlet pipe
O.D.φ16×I.D.φ12 (Rc1/2)
Weight (kg)
20
22
Air temperature (°C)
0-40
Dimensions (mm)
315W×443L×231H
225W×469.5L×353H
Over voltage
category
Ⅱ
Pollution degree
2
Insulation Category
Class 1
!
Warning
!
Note

2
1.3 Thermal Protector
1) This pump is fitted with an automatic reset thermal protector for overload protection. This
device shuts off the motor power supply circuit automatically to prevent burn-out if the
motor temperature rises due to overloading, or there is a pump fault which prevents
rotation.
2) Always fit other protective devices (eg earth leakage breaker, motor breaker) in addition to
the overload protection relay.
See "Warning" (8) on p.04.
See "Caution" (6) on p.06.
2. Dimensions
!
Warning
!
Caution
Fig. 1-1 DOP-301SB

3
3. Installation and Storage
3.1 Cautions for Installation and Storage
See "Warning" (1), (2), (3), (5), (6), (7),
(8), (9), (10), (11), (12) and (13) on p.04
and 05.
See "Caution" (1), (2) (3) and (4) on
p.06.
See "Note" (1), (2), and (3) on p.07.
!
Warning
!
Caution
!
Note
Fig.1-2 ＤＯＰ－３０１ＳＶＢ

4
3.2 Environmental Conditions for Installation, Storage, and Operation
The fine clearances used in this pump require that the following conditions be satisfied during
storage, installation, and operation.
(1)Ambient temperature of 0~40°C and maximum relative humidity of 85% during operation.
(2)Other conditions (during storage and operation)
a) Level floor of sufficient strength
b) No condensation
c) Dust-free environment
d) Well ventilated
e) Environment free of corrosive or explosive gas
f) Not subject to direct sunlight
g) No danger of fire
h) Maximum ambient temperature of 40°C when connecting the pump.
i) Sufficient space is available on all sides of the pump, and the pump cooling fan inlet is
not blocked.
3.3 Location
The pump should be installed level in a location with minimal dust and humidity. This location
should be selected in consideration of ease of installation and removal, inspection, and
cleaning.
Particular attention should be paid to ambient temperature when fitting the pump to equipment.
Use anti-vibration rubbers to isolate the pump from vibrations in the equipment. See 3.2
Environmental Conditions for Installation, Storage, and Operation for details.
3.4 Operational Checks Following Installation
1) Remove the rubber cap and vent plug on the inlet pipe.
2) Remove the four screws in the terminal box cover, pass the power cord through the cable
gland, and connect to the terminal block. Fit the appropriate crimped connectors to the end
of the cord.
Caution: Use the power cord which meets the rated voltage and current, pursuant to the
provision.
Caution: 4-Core-cable(Size of the wire lead: 1.0mm2or larger, 300V or more, 10A or more,
100°C or higher, one earth cable included)
The temperature rating of the power cord used must be 100°C
or more.
Caution: Use M4 terminal block screws with cable gland compatible cable of 6 - 12 mm
diameter.
3) Switch power ON, check the direction of rotation, and check for suction.
4) When checks are complete, switch off the main power supply and stop the pump. Check
that the pump has stopped.
!
Caution

5
3.5 Fluctuations in the power voltage and frequency
Standard: Rotation electricity machine general rules
IEC60034-1:2004
To the voltage change and frequency change in
Domain A, in main rated values, it operates
continuously, and can be used practically
convenient, and to the voltage change and
frequency change in Domain B, it shall operate
with main rated values and shall be used
practically convenient.
However, operation with "it is convenient and safe
is maintained on "practical use, it means not
resulting in the grade which shortens a life
remarkably, and the characteristic, a temperature
rise, etc. do not apply correspondingly in the state
of rating. Moreover, main rating shows rated
torque (N･m).
3.6 Piping
1) Ensure that all piping is installed without leaks, and fit a filter on the pump inlet.
2) Use inlet piping with an internal diameter of 12 mm or more.
3) Ensure that piping connected to the outlet does not cause back pressure. Maximum back
pressure is 0.03 MPa (gauge pressure).
4) In case of selecting the inlet pipe and exhaust pipe that are not from our products, please
select the exhaust pipe that has same or larger inner diameter length with the inlet pipe.
5) When evacuating a vessel, ensure that a shut-off valve is placed between the pump inlet
pipe and the vessel (see Fig. 3.2).
Fig. 3-2 Example of Piping Used When Evacuating a Vessel
3.7 Storage
Switch off the main power supply and check that the pump has stopped.
Remove the power cord connected to the pump, place the rubber cap on the inlet pipe,
remove the silencer from the outlet and fit the vent plug, and store in a location with low
humidity
Vacuum pump
Filter
Leak valve
Shut-off valve
Vessel
Fig.3-1 Change region of the voltage and frequency

6
4. Cautions for Operation
4.1 Cautions for Operation
See "Danger" (1) and (2) on p.04.
See "Warning"(8), (14), (15) and (16)
on p.04 and p.05.
See "Caution" (4), (5), (7) and (8) on
p.06.
See "Note" (3), (4), (5), (6) and (7) on
p.07.
4.2 Operation of the Thermal Protector
1) If the thermal protector operates, switch off the main power supply immediately and contact
the manufacturer. The motor will be extremely hot and should not be touched under any
circumstances.
2) When the cause of the problem has been eliminated, check that the motor has cooled,
switch on the main power supply, and check that the pump is operating.
See "Caution" (6) on p.06.
Immediately switch off the main power and contact to the
manufacturer, when thermal protector is activated.
4.3 Starting in Cold Weather
The bearing grease and cup packing may harden under cold conditions, and the pump may
be difficult to start. Use the following procedure in this case.
1) Open the inlet to atmosphere, and switch power ON-OFF two or three times until the pump
starts. If the pump still does not start, raise the ambient temperature above 0°C.
2) With the inlet open to atmosphere, run the pump for a few minutes to warm it.
3) Commence normal operation once the pump has warmed.
5.Pump Performance
5.1 Pressure Achieved
The term “pressure achieved” as employed in the catalogue and in this manual is defined as
“the minimum pressure obtained by the pump without introduction of gas from the pump inlet
(i.e. the no-load condition)”.
Note that the indicator values for pressure may differ between types of vacuum gauges.
The pressure achieved in practice is higher than that noted in the catalogue for the following
reasons.
!
Danger
!
Caution
!
Note
!
Warning
!
Caution

7
(1)The fact that the vacuum gauge is mounted a distance from the pump, the steam
generated by water droplets and rust etc on the inside walls of the pump and piping, and a
variety of gases present in the system result in increased pressure.
(2)Leaks into the vacuum system introduce other gases, resulting in increased pressure.
5.2 Evacuation Rate
The rate of evacuation varies with the type of gas used, and its pressure. The maximum rate
of evacuation is reached when air is introduced, and slowly decreases as pressure is reduced.
The resistance of the piping system increases with small bore piping which extends over long
distances, and this reduces the rate of evacuation.
The declared rate of evacuation for this pump is the maximum value achieved with dry air.
5.3 Power Requirements
The power required to drive the pump is the total of the work required to overcome the
rotational resistance of the pump (mechanical work), and the work required to compress the
air (compression work), and is at a maximum at an inlet pressure of 2.7 x 104~6 x 104Pa.
If pressure drops below this level, compression work is considerably reduced and power is
expended in mechanical work.
6. Maintenance, Inspection, and Repair
6.1 Cautions for Maintenance, Inspection, and Repair
See "Danger" (3) on p.04.
See "Warning" (4), (17) and (18) on
p.04 and p.05.
See "Caution" (9) and (10) on p.07.
See "Note" (8) on p.07.
Customer repair technicians are able to perform the following maintenance and repairs. Other
repairs and modifications (except for the standard options available from the manufacturer)
should not be performed by the customer.
1) Replacing cup packing
2) Replacing inlet and outlet valves
3) Replacing gaskets
4) Replacing inlet valve rubber separator
5) Replacing backup inlet and outlet valves
6) Replacing connecting tubes
!
Danger
!
Caution
!
Note
!
Warning

8
6.2 Maintenance
Ensure that the following checks are conducted at least once every three days while the pump
is in operation.
1) Does the pump emit abnormal noises?
2) Is the pump abnormally hot?
3) Is gas evacuated normally?
4) Is the silencer blocked?
Resolve any problems in accordance with "6-5.Troubleshooting List."
6.3 Regular Inspections
Inspect consumables after the first 3000 hours of operation, and replace and clean in
accordance with the “Guidelines for Replacement and Cleaning "on the following page. Refer
to 6.4 Replacing Consumables and Cleaning for procedures.
Request replacement by the manufacturer’s service division if a repair technician is not
available.
<Consumables List>
Table 6.1 Consumables List (DOP-301SB/301SVB)
Components
Quantity
Material
Average life
Inlet and outlet valves
12
SUS
―――
Backup inlet and outlet valves
8
PTFE
6000 hr
Cup packing
4
PTFE
6000 hr
Inlet valve rubber separator
4
Silicon
6000 hr
Gaskets
4
NBR
6000 hr
Connecting tubes
1 set
Nylon
6000 hr
Bearings
1 set
―――
15000 hr
Life of these components tends to be extended when the requirements in "4.1 Cautions for
Operation" are followed, and the pump is operated under a light load. The term 'light load'
refers to operation at achieved pressure (inlet closed).
Bearings are replaced by the manufacturer’s service division.