Ulvac DOP-80SP User manual

No. 23700-2-01-11
INSTRUCTION Manual
Oscillating Piston Dry Pump
DOP-80SP
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.

Contents
Pages with a shaded background are those which contain items related to safety.
Before Using the Equipment.................................................................................................. 01
Checks When Opening Packaging ........................................................................................ 02
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 Protection Relay............................................................................................1
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 ............................. 3
3.3 Location.......................................................................................................................3
3.4 Electric Wiring ............................................................................................................. 3
3.5 Fluctuations in the power voltage and frequency ........................................................4
3.6 Checking Operation After Installation.......................................................................... 4
3.7 Piping.......................................................................................................................... 5
3.8 Storage........................................................................................................................5
4. Cautions for Operation.........................................................................................................5
4.1 Cautions for Operation ................................................................................................ 5
4.2 Operation of the Thermal Protection Relay................................................................. 5
4.3 Starting in Cold Weather .............................................................................................6
5. Pump Performance..............................................................................................................6
5.1 Evacuation Rate..........................................................................................................6
5.2 Power Requirements................................................................................................... 6
6. Maintenance, Inspection, and Repair .................................................................................. 7
6.1 Cautions for Maintenance, Inspection, and Repair...................................................... 7
6.2 Maintenance................................................................................................................7
6.3 Regular Inspections..................................................................................................... 7
6.4 Replacing and Cleaning Consumables .......................................................................8
6.5 Troubleshooting List.................................................................................................. 14
7. In Conclusion.....................................................................................................................15
•Warranty ........................................................................................................................15
•Usage Status Check Sheet
(used with requests for disassembly and repair)
• Product information, service bases, and contact information

Figures and Tables
Fig.2.1 DOP-80SP Dimensions...............................................................................................2
Fig.3-1 Instillation Method of Earth Screw................................................................................ 3
Fig.3.2 Change region of the voltage and frequency ...............................................................4
Fig.3.3 Example of Piping Used When Evacuating a Vessel ................................................... 5
Table 1.1 Product Specifications............................................................................................1
Table 6.1 Consumables List...................................................................................................7
Table 6.2 Locations for Maintenance and Inspection.............................................................8
Table 6.3 Troubleshooting List............................................................................................. 14

Before Using the Equipment
Thank you for purchasing this product. Your custom is very much appreciated.
This pump is designed solely for vacuum discharge, 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 of may be refused if these circumstances
are unclear.
01

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
・Inlet and outlet caps (fitted to inlet and outlet) -------------------- x 2
(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 pipe on the side of the pump is not gripped or bent when removing the
pump from the packaging. Holding the pump by this pipe may damage it, thus
reducing pump performance.
2. Always remove the outlet cap before using the pump.
3. Fit an inlet filter if there is a possibility of foreign matter or dust particles entering the
pump.
!
Note
02
Pipe

03
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 components reach surface temperatures in excess of 60ºC during pump operation.
Burns may result if these components are touched during operation.
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.
!
Danger
!
Warning
!
Caution
!
Note
High Temperatures
Electric Shock

04
・Cautions for Safety in Use
Applications
(1) This pump is not designed to be explosion-proof, and should therefore not be used to
discharge explosive gases.
(2) In addition to discharge of gas via the outlet, gas may also leak from other parts of the pump,
and it should therefore not be used with toxic gases. If toxic gas is discharged for any reason
it is important to note that the interior of the pump will be contaminated by the gas, requiring
appropriate caution during maintenance.
Maintenance and Repair
(3) When requesting the manufacturer’s service division to dismantle and repair the pump,
always note the gas which the pump has been used with on the Usage Check Sheet. Note
that if it has been used to discharge toxic gas for any reason it will be contaminated. Please
be aware that use with some gases will preclude dismantling and repair.
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.
(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 fault 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 device, and this may result in the motor burning out, or
fire.
(9) Do not damage, modify, pull the power cord, or place objects on it. Damage to the cord may
result in electric shock or fire.
(10) Ensure that the power cord used for the pump is appropriate for the rated voltage and
current. With each core wire having a cross-section area of 1.0mm2or more.
(11) Switch off the main power supply, 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.
(14)The electric motor fitted to this pump incorporates a thermal protector. However for safety
reasons therefore, it is necessary to fit an overload (over current), protection device and an
earth leakage breaker.
!
Danger
!
Warning

05
Operation
(15)This pump is not designed to be explosion-proof. When using the pump, ensure that there
are no inflammable materials such as solvents, or explosive gases, in the vicinity. Use under
such conditions may result in injury or fire.
(16)Inserting fingers or objects into the motor inlet may result in electric shock, injury, or fire.
(17)There is fear of the explosion. Please do not drive the pump with the exhaust side shut.
Pressure in the pump rises, and the main body of the pump might explode, and the motor
become an overload. The limit value of pump internal pressure is 0.50MPa (gage pressure).
Please install the protection instrument such as safety valves.
Maintenance and Repair
(18)The pump should be dismantled or repaired only by a repair technician trained by the
manufacturer.
(19)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.
Installation
(1) 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.
(2) The fine clearances used in this pump require that the following conditions be satisfied during
storage, installation, and operation.
1. Ambient temperature of 7~40°C and maximum relative humidity of 85% 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 during assembly of pump.
i) Free of soot and oil.
j) Free of splashing or flooding.
k) Keep it indoor ventilated.
l) When installing the pump, avoid mounting a pump directly on the base. Employ
anti-vibration rubber between the base and the pump.
Operation
(3) Do not use in applications involving organ transplants, or contact with body fluids or living
tissue.
(4) Touching rotating components (eg motor, main shaft, axial joints, cooling fan) while the pump is
in operation may result in injury.
(5) The overload protector operates when the pump becomes excessively hot. Touching it in this
condition may result in burns.
(6) Touching the pump while the pump is in operation or while it is still hot immediately after having
been switched off may result in burns.
(7) Do not insert fingers or objects into, or peer into, the inlet or outlet during operation.
(8) Ensure that the customer installs a trap if steam is generated. Ensure that condensate does not
enter the pump. A malfunction may result if condensate enters the pump.
!
Warning
!
Caution

06
Maintenance and Repair
(9) Dispose in accordance with legislation for disposal and cleaning of waste products, handle as
industrial waste, and do not incinerate.
(10) If the pump ceases operation, turn power OFF immediately to prevent accidents, remove the
power cord from the wall outlet, and contact your dealer or the manufacturer for inspection and
repair.
(11) Leave the pump for at least 30 minutes until it has cooled, and begin operation again. Touching
the pump immediately after it has stopped may result in burns.
(12) As the pump is not protected against entry of water, it is not guaranteed against splashing or
flooding.
Installation
(1) The pump may malfunction if it is subjected to shocks or tipped over on its side.
(2) Do not grip or bend the pipe on the side of the pump. Any damage to this pipe may reduce
the performance of the pump.
(3) By removing the fixed rubber legs, do not install the pump directly to the system.
There would be a case that the pump casing is deformed and a load occurs to the motor
bearing.
(4) Fit an inlet filter if there is a possibility of foreign matter or dust particles entering the pump.
(5) 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.
Application
(6) 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.
(7) This pump is only for pressure pumping, and must not be vacuumed.
(8) In addition to discharge of gas via the pump outlet, gas may leak from the pump itself. Do not
use the pump to evacuate toxic gases. If the pump is used to evacuate toxic gas, appropriate
care is required during maintenance.
(9) The pump will not often operate normally if it is used with corrosive gases, organic solvents,
liquids, or condensed gases (eg steam).
(10) The pump will not often operate normally if it is used with gases containing particles or dust
etc. Always fit a filter to the inlet.
Operation
(11)Use the pump at an ambient temperature of 7 –40°C. The life of the pump will be severely
reduced if it is operated at high temperatures.
(12)Application of back pressure at the pump outlet will overload the motor and may prevent the
pump starting.
(13)When the thermal protection relay operates the pump will be extremely hot. Touching the
pump in this condition may result in burns.
Maintenance and Repair
(14) The fine clearances used in this pump require skill in its assembly. If a repair technician is
unavailable, replacement of all consumables should be left to the manufacturer’s service
division.
!
Caution
!
Note

1
1.Product Outline
1.1 Purpose of Use and Prohibitions
This product is a piston dry 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 pressure pumping, and must not be vacuumed.
(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.
1.2 Specifications Table 1.1 Product Specifications
Model
DOP-80SP
Discharge
rate
50Hz
80 L/min
60Hz
84 L/min
Pressure (Pressurizing)
0.50 MPaG
Motor
1φ, 300W, 4P , capacitor run
Rated
current
50Hz
5.0 A
2.5 A
60Hz
5.5 A
2.7 A
Rated Voltage
100 V
200 V
Speed
1419 / 1714 r/min
1428 / 1718 r/min
Weight
9 kg
Inlet and outlet piping
D.O.φ9 ×I.D.φ5 (R1/4)
Air temperature
7 ～40 ℃
Dimensions
168.5(W) ×288(L) ×181(H)
1.3 Thermal Protection Relay
1) This pump is fitted with an automatic reset thermal protection relay 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), P04
See Caution (5), P05
!
Warning
!
Caution
!
Warning
!
Note

2
2.Dimensions
Fig.2.1 DOP-80SP Dimensions

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)(13)(14),P04
See Caution (1)(2), P05
See Note (1)(2)(3)(4)(5), P06
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 7~40°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 during assembly of pump.
i) Free of soot and oil.
j) Free of splashing or flooding.
k) Keep it indoor ventilated.
l) When installing the pump, avoid mounting a pump directly on the base. Employ
anti-vibration rubber between the base and the pump.
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 Electric Wiring
(1) The wire diameter of power cord must be 1.0 mm2or more.
(2) We recommend end-user to equip protection device such as earth leakage breaker motor
breaker on electric wiring to prevent from motor burnout which may occur by overcurrent.
(3) Be sure to ground to the screw next to the earth mark.
Please attach earth terminal as shown in Fig.3-1
(4) The electric wire which will be connected to the earth must be a green colored insulating
coating wire, with or without yellow stripes. Its wire diameter must beφ1.0 mm2or more.
Notice: Before operating wire connection, be sure to unplug the power plug.
!
Warning
!
Caution
!
Note
Ｍ４×８＋ＳＷ＋ＰＷ
Pump
Earth Attaching Portion
Toothed Lock
Washers.
Ｍ４
Round Shape Earth Terminal.
Please have it prepared by customer
Fig.3-1 Installation Method of Earth Screw

4
3.5 Fluctuations in the power voltage and frequency
Standard: Rotation electricity machine general rules
JIS C 4034-1:1999，JEC-2137-2000
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).
Fig. 3.2 Change region of the voltage and frequency
3.6 Checking Operation After Installation
1) Remove the cap on the inlet and outlet pipe.
2) Switch power ON, check the direction of rotation, and check for suction.
3) When checks are complete, switch off the main power supply and stop the pump. Check that
the pump has stopped.
Caution: Use cable, with each core wire having a cross-section area of 1.0 mm2or more.

5
3.7Piping
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 5 mm or more.
3) The limit value of pump internal pressure is 0.50MPa (gage 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) Install the protection instrument such as safety valves about piping like Figure 3.3 between
the exhaust tube and the container of the pump.
Fig.3.3 Example of Piping Used When Pressurizing a Vessel
3.8 Storage
Switch off the main power supply and check that the pump has stopped.
Remove the power cord connected to the pump, place the caps over the inlet and outlet, and
store in a location with low humidity.
4.Cautions for Operation
4.1 Cautions for Operation
See Danger (1)(2), P04
See Warning (8)(15)(16)(17), P04,P05
See Caution (3)(4)(6)(7)(8), P05
See Note (3)(4)(5)(6)(7)(8)(9)(10)(11)(12), P06
4.2 Operation of the Thermal Protection Relay
1) If the thermal protection relay 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 (5), P05
See Note (13),P06
!
Warning
!
Caution
!
Note
!
Caution
!
Danger
!
Note
Safety Valve (0.15MPa)
Filter
Pump
Shut-off valve
Vessel

6
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 7°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 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.
5.2 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 0.50MPaG. If pressure
drops below this level, compression work is considerably reduced and power is expended in
mechanical work.

7
6.Maintenance, Inspection, and Repair
6.1. Cautions for Maintenance, Inspection, and Repair
See Danger (3), P04
See Warning (4)(18)(19), P04,P05
See Caution (10)(11), P06
See Note (14), P06
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 suction and exhaust valves
3) Replacing gaskets
4) Replacing O rings
6.2 Maintenance
The following checks are required at least once every three days during operation.
(1)Check for abnormal noises.
(2)Check for abnormal heating of the pump.
(3)Check that gas is discharged normally.
If a problem is found, take the measures described in 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
6.5 Replacing Consumables and Cleaning for procedures.
Request replacement by the manufacturer’s service division if a repair technician is not
available.
Table 6.1 Consumables List
Components
Quantity
Material
Average life
Cup packing
2
PTFE
3,000 Hr
Suction valves
2
SUS
3,000 Hr
Exhaust valves
2
SUS
3,000 Hr
Gaskets
2
FPM
10,000 Hr
O rings
6
FPM
10,000 Hr
Bearing
4
15,000 Hr
Note that the average life for a component varies with the conditions of use.
Always follow 4.1 Cautions for Operation, and remember that life is extended by running the
pump at minimal load (running the pump at minimal load is operation at near-atmospheric
pressure).
Bearings are replaced by the manufacturer’s service division.
!
Danger
!
Warning
!
Caution
!
Note

8
< Guidelines for Replacement and Cleaning >
Replace or clean components if performance is reduced and/or the following symptoms appear.
Table 6.2 Locations for Maintenance and Inspection
Period of
operation
Inspection item
Inspection details
Method of
inspection
Every 3000
hours
Cup packing
Abnormal wear, hardening,
cracking.
Visual
inspection
Suction and exhaust
valves
Deformation, chipping.
Visual
inspection
O rings
Deformation, Abnormal wear
hardening, cracking.
Visual
inspection
Gaskets
Deformation, hardening, cracking.
Visual
inspection
Bearings
Abnormal noises.
Listen
Power cords
Cracking
Visual
inspection
Loosening of terminals
Tighten a
screw
6.4 Replacing and Cleaning Consumables
See Warning (18),(19),P05
See Caution (11),P06
See Note (14),P06
Tools Required for Setup
Have the following tools on hand and perform the replacement while referring to the diagram.
If there is no repair technician available, or if you do not have access to the required tools, please make the appropriate
request to our repair services department.
・Required Tools
1. Torque wrench - bit size 4 mm (5.0 Nm)
2. Phillips head (+) screwdriver- No.2
3. Torque screwdriver- No.2 (0.8 Nm, 3.0 Nm)
4. Rag
5. Solvent for wiping (something that has no effect on rubber, such as ethanol)
6. vacuum grease
7. Loctite 242 or Loctite 243
*Use items No.4 and 5 to wipe down any dirty area when replacing the part.
!
Warning
!
Caution
!
Note
(1) The interior of the pump is extremely hot immediately after operation. After stopping
the pump, leave it for 30 minutes or more and begin replacing consumables and
cleaning only after checking that it has cooled sufficiently.
(2) To prevent ingestion of microscopic particles in the air, use a dust mask and gloves
when replacing components and cleaning.
(3) To prevent injury, wear gloves when replacing consumables.

9
Part Replacement Procedure
i. Parts Removal
*First unplug the pump’s power cable from the main
power supply.
Step 1: Remove (1) the hex socket bolts (M5×25) × Qty.
8, and then remove (2) the pump head, (3) the gasket and
(4) the pump head plate. Please be careful when
removing the gasket as it tends to adhere to other
components and it is therefore hard to remove. Pull out
(5) the connecting pipes that are linking (2) the pump
heads. Remove all of the four (6) O-rings attached to the
connecting pipes.

10
Step2: Remove (1) the small pan head screw (M3×8), (2) the
exhaust valve holder and (3) the exhaust valve from the pump
head plate removed in Step 1. Similarly, remove (4) the small
flat head screw, (5) suction valve holder and (6) the suction
valve from the rear side.
Step 3: Go back to the components left after Step
1, and remove the cup packing. Firstly, remove (1)
the cylinder. It can be removed by hand, but if it is
difficult, try pushing in (5) the cup packing
retainer first. You may find (3) the spacer under
the cylinder, but leave it where it is. Also, remove
(2) the O-ring from the cylinder.
Remove (4) the small flat head screws (M4×8),
and then remove (5) the cup packing retainer and
(6) the cup packing.
This step completes the parts removal procedure.
The next section is the assembly.

11
ii. Attaching Parts & Assembly
Step 4: Replace the O-rings on the connecting pipes. Insert new
O-rings into the grooves located at the ends of the connecting
pipes. There are a total of four grooves, two on each of the two
connecting pipes.
Step 5: Insert the connecting pipes to one pump head,
and then insert to the other pump head on the other
side. Applying vacuum grease to O-rings. Insert new
gaskets into the grooves on the pump heads. The
grooves may be a little tight, so push in the gaskets a
little harder to insert them all the way in.
Step 6: Place the pump head plate with its suction side
up, then place the suction valve and the suction valve
holder in that order inside the dent, and fasten them
with a small flat head screw (M3×5). Use a torque
screwdriver (0.8 Nm) to tighten the screw. Also, apply
the Loctite 242 or Loctite 243 onto 2-3 threads from
the screw tip for the small flat head screw.
*Be sure to always follow the appropriate tightening
torque. Failure to do so can lead to product damage.
*Be careful when applying Loctite 242 or Loctite 243,
as too much or too little can cause damage.
Suction valve
Suction valve holder
Suction
side
2-3 threads
Loctite 242 or Loctite 243