BSC BSV10 User manual

BSV10/ BSV16/BSV24/BSV30/BSV40/BSV60/BSV90
Ningbo BAOSI Energy Equipment Co., Ltd
www.cnbaosi.com
Instruction Manual
Two-stage Rotary Vacuum Pumps

Contents
1 Introduction...................................................................................................................................... 3
1.1 Scope and definitions.............................................................................................................. 3
1.2 Importance.............................................................................................................................. 4
2 Description........................................................................................................................................ 6
3 Technical Data................................................................................................................................... 7
3.1 Performance............................................................................................................................ 7
3.2 Dimensional drawing............................................................................................................... 8
4 Installation...................................................................................................................................... 12
4.1 Locate the pump ................................................................................................................... 12
4.2 Fill the pump with oil ............................................................................................................12
4.3 Electrical installation .............................................................................................................13
4.4 Check the direction of rotation ............................................................................................. 14
4.5 Inlet .......................................................................................................................................14
4.6 Outlet ....................................................................................................................................15
4.7 Operation ..............................................................................................................................15
5 Gas Ballast Function.......................................................................................................................16
6 Maintenance and Check .................................................................................................................17
6.1 Regular check ........................................................................................................................ 17
6.2 Vacuum pump oil check ........................................................................................................ 17
6.3 Change the pump oil.............................................................................................................18
6.4 Abnormal noise and vibration check..................................................................................... 19
6.5 Checking the metal mesh at the inlet port............................................................................20
6.6 Pump stopping and storage ..................................................................................................20
7 Disposal...........................................................................................................................................20
8 Warranty Clauses ........................................................................................................................... 21
9Disclaimer Clauses........................................................................................................................21
10 Main Replaceable Parts................................................................................................................ 22
11 Trouble Check List........................................................................................................................24

1Introduction
Thank you very much for using our products.
You are kindly requested, upon delivery of the product, to check that the delivered product is exactly
what you have ordered and it has no damage caused by transport or the like. lf there is any damage,
defect, or missing parts, please do not hesitate to contact with us.
1.1 Scope and definitions
This manual provides installation, operation and maintenance instructions for the BSV10, BSV16,
BSV24, BSV30, BSV40, BSV60, BSV90 rotary vacuum pumps. You must use your pump as specified in
this manual. Read this manual before you install and operate pump.
You are requested to install and operate the product in compliance with the laws and regulations
relating to the safety, e.g. Fire Defense Law, Electric wiring regulation and so on in the country and
region you use the product. Operators shall need to attend related training and have special
knowledge, skill and title regarding the electricity, machinery, cargo, vacuum and so on.
Important safety information is highlighted as WARNING and CAUTION instructions; you must obey
these instructions. The use of WRANING and CAUTION is defined below.
WARNING
Warnings are given where failure to observe the instruction could result in injury or
death to people.
CAUTION
Cautions are given where failure to observe the instruction could result in damage to the equipment,
associated equipment and process.
The units used throughout this manual conform to the SI international system of units of measurement.
The following symbol is on the pump.
Warning - refer to accompanying documentation.
Warning –risk of electric shock.
Warning –hot surfaces.

CONFORMITE EUROPEENNE - Comply with the EU "technical coordination and
standardization of new method" basic requirements of the directive.
WEEE - When the end user is going to discard the product must be sent to the appropriate
facilities, for recovery and recycling.
The direction of motor - Ensure that the pump-motor rotates in the correct direction.
1.2Importance
WARNING
Operations not comply with the following protective measures will result in
significant personal injury and equipment trouble!
Be sure to turn off the power supply to execute the wiring and maintenance work. You are
recommended to install a dedicated Leak breaker. You have a risk of getting electrical shock in
case of failure or electric leakage.
Do not run the pump on blocking the exhaust outlet or putting any device that might hamper gas
passage onto the outlet. There is a risk that the pressure inside the vacuum pump will rise up to
cause break of the casing or the oil level gauge, resulting in overload of the motor. When utilizing
the oil mist trap perform the periodic maintenance so that no-resistance can be realized in
passage of gas.
Ensured pressure value of the pump is not over 0.03MPa (0.3kg/cm2) (gauge pressure). Check the
exhaust side pressure of the pump. If it was over 0.03MPa, take away anything in and around the
exhaust outlet that hampers gas passage.
Do not exhaust any hazardous gas such as explosive, combustible and toxic. If any toxic gas was
evacuated, not only the pump itself but also vacuum pump oil get toxic. Keep this in mind when
perform maintenance, ask the special agency to do the detoxification process.
Do not exhaust any gas which oxygen content is greater than atmospheric oxygen (the oxygen
content>21%) or other strong reactive gas.
The motor and pump become hot (temperature increase under non-load operation：40℃,
temperature increase under high-load 80℃)during operation, there is a risk of burns. Do not
touch the motor and pump during operation or soon after pump stopping. Apply an appropriate
protection to avoid touching the surface as necessary.

Never place combustible materials around the motor or pump. There is a risk of fire. Also, do not
place objects that block ventilation around the motor. Abnormal heat generation may result in
burns.
Do not operate the pump in hazardous area (where there is a risk of creating hazardous
atmosphere by explosive gas). It might cause injury and fire.
Any non-professional person shall be restricted from disassembling, repairing or modifying the
product. It might cause a fire, be injured, or pump trouble.
Be sure there is no debris or powder and lots of condensed gas generated or accreted in system,
the pump will be damaged because of oil being deteriorated.
You should check the oil level regularly.
Do not operate the pump without pump oil or in an oil-less condition, the pump will be damaged.
Ambient temperature for operation should be 5 to 40°C . When the pump is installed in a closed
system, be sure the ambient temperature not more than 40°C .
It is imperative to put the overload protection device. Otherwise it would cause the motor burn
out and/or fire.
L1 L2 L3: Three-phase ac power supply QS: Air switch
FU1: Fuse / Circuit breaker KM1:Contactor FR:Thermal relay
U1 V1 W1: The motor terminal M3～: Three-phase ac motor
* Each protection device must comply with EU standard and certified by EU authorities
Fig.1 Motor wiring diagram（example）

2 Description
The BSV series pumps are compact, low noise, two-stage, oil-sealed, high-vacuum pumps designed
for reliable, long-term operation in both laboratory and industrial environments. A four-pole
three-phase motor provides direct-drive through a flexible coupling.
Features of the pump include the following:
1. High maintainability
Because of integrated cylinder structure and pin connection, maintenance and inspection can be
done easily and accurately. Daily check (oil level check, oil filling, and oil change) can be
performed from one direction.
2. Forced lubrication pump system
The stable performance can be obtained in the vicinity of the atmospheric pressure.
3. Hydraulic oil anti-sucking system
If the power fails or the pump is stopped for a long time without venting the inlet side to
atmospheric pressure, the pump oil will flow back to the cylinder, making restart difficult. This
pump is equipped with the oil anti-sucking feature to minimize the amount of oil flowing back to
the cylinder and to reduce the load, pump can restart easily.
4. Variable oil level system
This pump has a wide oil level indicating range to allow easy control of oil level. The pump is
operable if the oil level is between the two level lines of the oil level gauge during operation.
5. Gas ballast function
This proves effective when pumping condensable gas, such as water content, organic solvent and
the like.

3 Technical Data
3.1 Performance
Table 1 Performance data
Model
BSV10
BSV16
BSV24
Pumping speed
m3/h
50Hz
9.9
14.4
20
60Hz
12
17.4
24
Ultimate pressure
Pa
GP open
5
GP close
0.5
Motor kW
380V (3 phases)
0.4 (4poles)
0.55 (4poles)
0.75 (4poles)
220V (single phase)
Inlet
KF25
Outlet
G1
Vacuum pump oil
BS0 68
Oil capacity L
1.1
1.2
1～1.5
Weight kg
25
27
32
Table 2 Performance data
Model
BSV30
BSV40
BSV60
BSV90
Pumping speed
m3/h
50Hz
30
40
60
90
60Hz
36
48
72
108
Ultimate pressure
Pa
GP open
3
GP close
0.5
Motor kW
3phases 4poles
1.5
1.5
2.2
3.7
Inlet
VG40
VG50
Outlet
M50X1.5
Vacuum pump oil
BS0 68
Oil capacity L
1.2～2.8
2.5～4.2
Weight kg
63
65
87
101
1. The ultimate pressure is the value indicated on the Pirani gauge when the standard oil BSO 68 is
used. The ultimate pressure when the Mcleod gauge is used is approx. One digit lower than the
value indicated on the Pirani gauge.
2. The type of rotary pump oil differs depending on vapor pressure, viscosity, etc. The use of a
wrong type of oil can lower the pump performance. So use the pump oil recommended BAOSI.
Recommended type of oil: 1) BSO 68 (standard oil)
2) BSO 46 (oil for use in cold season)
3. GP is abbreviates by gas ballast valve.

3.2 Dimensional drawing
Fig.2 BSV10 [BSV16] Dimensional drawing

Fig.3 BSV24 Dimensional drawing

Fig.4 BSV30[40] Dimensional drawing

Fig.5 BSV60[90] Dimensional drawing

4 Installation
4.1 Locate the pump
Install the pump horizontally to a place where are less dust and humidity. Ambient temperature for
operation shall be 5 to 40°C . The layout arrangement should be considered for setting up, overhaul,
checking or cleaning the pump.
The pump is equipped a handle and rubber isolators as standard. If it’s equipped in a precision
instrument, be sure to install it flatly and no gaps between the pump and installation surface, tighten
bolts to fix it.
CAUTION
Instable installation will increase noise level or result in pump damaged, make sure to install the
pump on a flat place.
4.2 Fill the pump with oil
It is recommended that you use the BSV 68 vacuum pump oil. The ultimate vacuum of the pump with
other oils may be higher than the ultimate vacuum with the recommended oil.
Filling the pump with oil as described below.
1. Remove the filler-plug.
2. Pour oil into the pump until the oil-level between the MAX and MIN mark indicated on the
sight-glass. If the oil-level goes above the MAX mark, open the oil drain-tap the excess oil from
the pump.
3. After a few minutes, recheck the oil-level is below the MIN mark, pour more oil into the pump.
4. Refit the oil filler-plug. Tighten the plug firmly by hand. Do not over-tighten.
MAX
MIN
Fig.6 Oil level indication

4.3 Electrical installation
WARNING
Before connecting wires, you must be turn off the power switch. If not, an electric
shock will occur. Connect the earth wire correctly.
Install a suitable overload protector for capacity of the motor, otherwise the
motor will be damaged leading to fire.
Connect the wires according to indication on the motor nameplate.
This pump can be used with no trouble practically for fluctuation range of power voltage and
frequency as shown below. But this only means no significantly shortening life time of the pump, no
conforming to the rating value of characteristics will cause temperature rise.
Fluctuation of power voltage ±10%
Fluctuation of frequency ±5%
Total value of simultaneous fluctuation of power voltage and frequency within ±10%
Fig.7 Triangular connection
Fig.8 Y-connection

4.4 Check the direction of rotation
WARNING
The direction of rotation is as indicated by the arrow mark cast on the motor fan
cover.
Ensure that the pump-motor rotates in the correct direction. If it does not, the
pump and your vacuum system can become pressurised.
If it is reversed, interchange K1 and K2 for single phase motor and interchange two of the three wires
for three phase motor.
4.5Inlet
The pipe caliber connected to the inlet port should not be smaller than the inlet port diameter.
Otherwise the pumping speed will be decline.
Vacuum chamner
Vacuum valve
Vent valve Vacuum gauge
Bellows
Vacuum pump
Fig.9 Connection vacuum chamber (example)
CAUTION
Vent valve is to prevent pump oil or oil vapor anti-sucking to vacuum chamber when the pump
stopping. Install it closer as possible to the vacuum chamber Install it on the inlet port of the
mechanical booster pump if the pump is used together with booster pump.
If the pump sucked the water or substance such as dust, powder and soon, it would impair the
ultimate pressure and further cause trouble.
Metal mesh on the inlet port is to keep foreign substances away from the pump unit. Be sure not to
take it out unless necessitated so to check it.

4.6Outlet
The pipe caliber connected to the outlet side should not be thinner than the outlet diameter.
Otherwise there is a risk that the pressure inside the pump will rise up to cause break of the casing or
oil level gauge, or overload of the motor.
Oil mist would appear through the exhaust side when the pump running around high pressure range,
discharge it to outdoor or an oil removing device through exhaust piping. It is recommended to use
an oil mist trap to reduce oil consumption and to trap oil mist.
WARNING
The pump is not made as the withstand pressure structure.
Ensured pressure value of the pump is not over 0.03MPa (gauge pressure).
Ensure exhaust side keeps clear when the pump running.
4.7 Operation
1. The pump can start and run under any pressure which not higher than atmospheric pressure. If
the environment temperature is not lower than 10°C , pump can start without any difficulty. If
there is electromagnetic valve equipped on the inlet port, it should be started at the same time
with pump starting.
2. During pump operating, if the air inlet side suddenly exposed to the atmosphere because of
accidently trouble (system damaged etc.), you should stop the pump as soon as possible, close
the pipe which connecting with the system to avoid the pump oil splashing out.
3. High working environment temperature will lead to the ultimate vacuum worse.
4. The ultimate pressure of the pump, the value measured from compression mercury vacuum
gauge should prevail. Connect vacuum gauge which was full pre-pumped and calibrated directly
to the inlet port, if the pump temperature goes to stabilize, the ultimate pressure can be reached
after pump running 30 minutes.
5. The pump becomes hot during operation (40 to 80°C ). Do not touch the motor, pump unit and
pipes during or just after stopped operation while the pump unit remains very hot. Apply an
appropriate protection to avoid touching the surface as necessary.
WARNING
The oil temperature reaches 70 to 80°C on continuous operation for hours under
high suction pressure. Perhaps parts inside the pump are damaged if the oil
temperature higher than80°C . Check the pump or contact with us.

5 Gas Ballast Function
This product is installed with the gas ballast function (G3/8 plug screw in the gas ballast port) as
standard. It can be used with connecting needle valve or pipes. The gas ballast function is applicable
to exhaust the condensed gas such as water vapor or solvent vapor.
Breathed condensed gas shall be liquefied through the compress process of the pump, mixed with
the pump oil and then cycled mixed together inside the pump unit. This status brings you the same
situation that you used the high steam pressure oil that raises the ultimate pressure. It also shortens
the life cycle of the shaft seal since the oil lubrication shall deteriorate.
Import the air or dry nitrogen through the gas ballast port just before the pump compression process,
the condensed gas (such as water vapor or solvent vapor) is not liquefied but exhausted with the air
through the exhaust valve, it called gas ballast function.
To use the gas ballast, breathe in the air through the gas ballast port before sucking in condensed gas
and operate the pump around twenty minutes, this is because the “gas ballast effect” becomes larger
as the pump temperature is higher Wait until the pump temperature rises around70°C to open the
vacuum valve to operate the pump. The “gas ballast effect” under lower temperature shall be lower
than the specified process performance.
You also have to note that the condensed gas might remain in the pump oil after you have exhausted
a lot of condensed gas or exhausted the condensed gas without opening the gas ballast port since the
process capacity of the condensed gas by the gas ballast port is limited. In such case, close the
vacuum valve, breathe in the air through the gas ballast port and idle operate the pump. Then the oil
temperature shall rise up and the oil will be cleaned by means of the gas ballast effect. Keep on idle
operating the pump with opening the gas ballast port until the specified ultimate pressure is attained.
You need to replace the pump oil if it was not cleaned (the specified ultimate pressure can’t obtain)
after operating a long time.
CAUTION
The vacuum pump gets high temperature during operation. As the gas ballast port also gets high
temperature, be sure to wear protective gear such as a pair of gloves.
Ensure close the gas ballast port to start operating the pump. The oil might jet out of the gas ballast
port during the operation around high pressure range.
CAUTION
Keep the gas ballast port closed when not exhausting the condensed gas.
If you kept opening the gas ballast port when not exhausting the condensed gas, it might cause the
oil splash, power loss or ultimate pressure rise.
Also, Opening the gas ballast port will increase the temperature rise, noise level and oil mist volume.

6 Maintenance and Check
6.1 Regular check
You should check following points at least once per three days during operation. Check the machine
much more frequently during high overload operation (continuous operation 1kPa or more, repeated
exhaust atmospheric pressure-vacuum).
1. Whether the pump oil volume is between two level lines or not.
2. Whether the pump oil is discolored or not.
3. Whether there is no abnormal noise.
4. Whether there is anything strange in the motor current value.
5. Whether there is no oil leak from the pump.
6.2 Vacuum pump oil check
The pump oil will be gradually deteriorated not only by contamination with sucked gas, but also by
temperature rise during pump operation. If pump is operated using pump oil containing much
content, the ultimate pressure will rise, leading to poor function of the mechanical friction parts of
the pump. In the worst case, the pump will seize up and cannot be rotated. Check the oil for
contamination, viscosity and discoloring periodically.
CAUTION
The oil level gauge is for checking the pump oil level. Since the oil is not circulating between the
pump case and the oil level gauge, contamination or discoloring of the oil may not be observed
on the oil level gauge. Periodically drain approx. 50ml oil through the drain port and check the
oil for contamination and discoloring.
Visual inspection
The pump oil should be clean and transparent.
If the oil color gets reddish brown, dark brown and cloudy white, please replace the oil. The
replacement cycle depends on the application, keep the check records and change the oil regularly.
Pump oil level check
The pump oil should be between the two level lines on the oil level gauge when pump operating. If oil
level is under the MIN line, exhaust valve can't be sealed so that ultimate pressure can't obtain. If oil
level excesses the MAX line, a lot of oil will splash out from the outlet port when pump running at
atmospheric pressure.

CAUTION
Continuous operation one hour or more at high pressure (1kPa or more) would decrease the oil
volume that are discharged as the oil mist and cause parts wear rapidly or cause trouble such as
burning.
You are recommended to control the oil level on regularly supplying the pump oil. It is
recommended to install the oil recovery mechanism (0ption).
Continuous operation at high pressure; the oil temperature becomes very high. As a result, the oil
rapidly deteriorates, and the attained pressure and the exhaust speed go bad, and it causes the
rapid abrasion of the parts or burns.
Frequently perform replacement of the pump oil and shorten the maintenance cycle.
6.3 Change the pump oil
WARNING
Wear protective gear such as rubber gloves, protective goggles and the like.
There might be some hazardous substances in pump oil because of oil
decomposition or hazardous gas sucked in, confirm the nature of the hazard
and take necessary safety gear.
The oil level comes down approximately lcm after pump being started. Do
not operate the pump with the minimum oil level. Do not operate the pump
before filling pump oil, the pump will be damaged.
To ensure the pump function and the service life, the pump oil must clean
and keep in appropriate oil level.
Because of improper storage or use, there might be water or other volatile substances mixed in pump
oil and the ultimate pressure cannot attain. Close the air inlet, open the gas ballast port and run
pump continuously for 30 minutes to exhaust the gas. If the pump oil was deteriorated by mechanical
impurities or chemical contamination, replace the pump oil. You are recommended to fill the pump
with clean BS0 68 oil. To change the pump oil as follows.
Shut down the pump and open the oil drain port to drain the oil in the pump case. Up on completion
of draining the oil, close the drain port again and ran the pump under no load for approx. 5 seconds
to drain the oil from the cylinder.
Close the drain port and fill fresh oil through the oil filling port. Pour oil until the oil level comes
between the two level lines of the oil level gauge.
If the oil is severely contaminated, fill fresh oil and run the pump for several minutes under no load to
clean the pump interior. Repeat this operation several times depending on the degree of oil
contamination.
After changing the oil with fresh oil, run the pump to warm it up and then check the ultimate
pressure. If substances of low boiling point (water, organic solvent, etc.) are mixed with pump oil or
sludge collects on the bottom of the pump case, the ultimate pressure cannot recovered by one oil
change, the pump oil must be changed several times. If the specified ultimate pressure cannot be

attained by oil change, sludge or other deposit may have collected on the bottom of the pump case.
In that event, overhaul is required. Contact with us.
CAUTION
The pump oil might deteriorate in a shorter time depending on the use. It is recommended to replace
the first pump oil within ten days after operation start and see how it got dirty to determine the oil
replacement cycle.
If the pump breathes in a lot of water or the like, you should replace the oil more frequently. If kept
operation without getting rid of breathed water, it would deteriorate lubrication of the oil and
accelerate corrosion of the pump inside, then result in a failure. Do not store the pump keeping
sucked the water.
You should replace the oil if breathed in the solution to deteriorate lubrication of the oil as it would
also cause biting inside. There is a risk if breathed in the solution in operation even you replaced the
oil. When using the pump in suction of solvents, it is out of range of warranty.
If the pump breathed in chemical material such as acid, immediately replace the oil as it would cause
the rust during the stop in one night to make the system not applicable to operate. When using the
pump in suction of chemical material, it is out of range of warranty.
Starting the pump operation might become difficult in winter season or in the cold district. This is the
overload phenomenon caused by increased viscosity of the pump oil. To make sure, you should
confirm that the capacity of the motor over load protective device conforms to the motor rated value,
the pump is not damaged and the cable does not have abnormality. Then, warm up the pump oil or
replace the vacuum pump oil with BS046 which having lower viscosity.
CAUTION
When temperature is low and pump does not run, warm the pump oil up to 15℃and turn the pump
on and off several times in short intervals.
When the pump stops after run for several seconds, try to move it while putting slow leak in it, there
is the thing that the pump can run consecutively.
As the pump warmed, close the slow leak valve and return it to regular running.
6.4 Abnormal noise and vibration check
Checking around the pump
1. Whether bolts and nuts and the like fixing the pump are loose or not.
2. Whether pipes connected to the inlet and outlet are loose or not.
3. Check and ensure that there is no leakage from the piping and valves. Please refer to the table 7
“Trouble Check List”to check the pump.

6.5 Checking the metal mesh at the inlet port
The suction inlet might be clogged by the dust contained in the gas breathed in from the vacuum
chamber and thus the pump performance might be impaired. If the metal mesh is dirty, please wash
it. If it is damaged, replace it.
There will be welding spatter drops off in the pipe particularly at the beginning of the system start. Be
fully caution.
6.6 Pump stopping and storage
CAUTION
Ensure first close the vacuum valve then open the leak valve last stop the pump. If failed in
following this procedure, the pump cylinder will fill with the oil in several minutes, which might
make difficult to restart operation or pump damaged.
Further the oil might accidentally flow back to the vacuum tank.
If failed in closing the vacuum valve, the vacuum might leak from the exhaust side through the
pump unit.
1. When operation finished, first close the vacuum valve which is on the inlet, then stop the pump.
2. After pump stopped, open the vent valve to restore pump pressure to atmospheric pressure.
3. Ambient temperature, humidity and height for storage: -10 to 50°C, less than95%RH (no freeze,
no condensation), lower than el. 1000m. It shall be in house, no direct sun beam. The pump shall
not be stacked, inverted or rollover.
4. There shall be no corrosive or explosive gas around the pump, and keep clean to prevent debris
into the pump. If the pump does not operate for a long time, seal the inlet and outlet port to
prevent dust, dirt into the pump.
5. If the pump does not operate for a long time, condensable gas will be adsorbed in the pump
cylinder or sealing parts. You can extend pumping time to exhaust the gas before the pump
returning to regular running.
6. Long term storage of the vacuum pump without operation might possibly cause trouble in
operation because of rust. If you kept the pump long time without operating it, ask a closest
service center or contact with us for the check.
7Disposal
Make sure to keep in compliance with the laws and regulations established by the local governments
to dispose the vacuum pump. You should ask the dedicated disposal agency for the disposal
particularly if the pump has exhausted any toxic gas. For the disposal of pump oil, follow the
instructions in “Material Safety Data Sheet”.
Note that you are requested to bear the cost and charges relating to the disposal.