BSC SRV630 User manual

Instruction Manual
VERSION
：
1.0
Single-stage oil-sealed rotary vane vacuum
pump
SRV630/SRV750

Contents
1
Important Safety Information
1.1 Mechanical Hazards
1.2 Electrical Hazards
1.3 Thermal Hazards
1.4 Hazards caused by materials and substances
1.5 Danger of pump damage
2
Description
2.1 Operation principle
2.2 Technical data
2.3 Lubricants
3
Transport and Storing
3.1 Transport and packaging
3.2 Mounting orientation
3.3 Storage
4
Operation
4.1 Installation
4.2 Connection to system
4.3 Start-up
4.4 Operation
4.5 Switching off / Shutdown
4.6 Ultimate pump pressure
5
Maintenance
5.1 Safety Information
5.2 Maintenance Intervals
5.3 Maintenance Work
6
Troubleshooting
Spare parts
2

1 Important Safety Information
1.1
Mechanical Hazards
Never expose part of the body to the vacuum. There is a danger of injury. Never
operate the pump with an open and thus accessible inlet. Vacuum connections
as well as oil filling and oil draining opening must not be opened during
operation of the pump
1.2
Electrical Hazards
The electrical connection must only be provided by a trained person. Please
observe the national regulations in the country.
1.3
Thermal Hazards
When operating pump is hot and some surfaces could reach a temperature higher
than 80℃（176℉）. There is risk of burn by touching.
1.4
Hazards caused by materials and substances
SRV630 pump are not ：
★For pumping of dusty, aggressive, corrosive, flammable or explosive
gases or gases mixtures;
★For pumping of oxygen or other highly reactive gases with a greater
concentration than atmospheric concentration (＞20%);
★For pumping liquids;
★For working in flammable, explosive or dusty environment;
Depending on the process involved, dangerous substances and oil may escape from
the pump. Take the necessary safety precautions.
Take appropriate precautions to insure that the pump cannot start.
3

If the pump has pumped hazardous gases it will be absolutely necessary to
determine the nature of the hazard involved and take the appropriate safety
precautions.
Take adequate safety precautions prior to opening the intake or exhaust port.
Respect the instruction concerning environment protection when discarding used
oil or exhaust filters.
Observe all safety regulations.
1.5
Danger of pump damage
★
Liquid and solid particles must not enter the pump. Install the adequate
filters, separators and condensers.
★
The intake line of the pump must never be connected to a device with
over atmospheric pressure. Design the exhaust line so that no pressure
higher than 1.15 bar can occur. Never work with closed or restricted
pump exhaust.
★
Operating of the pump without oil or operating with incorrect direction
of rotation can destroy the pump or lead to oil backstroking.
★
Never use discarded seals. Always assemble using new seals.
★
The pump must be packaged in such a way that it will not be damaged during
shipping, and so that no harmful substances can escape from the package.
4

2
Description
SRV630 are designed for pumping of inert gases in the range of rough vacuum, between
atmospheric pressure and end pressure of the pump.
When removing condensable vapours, a gas ballast valve (or 2) must be installed.
2.1
Operation principle
SRV630is a single-stage, oil-sealed rotary vane pump.
The anti-suckback valve, gas ballast valve, exhaust filters, oil feedback
circuit, oil cooler and thermal switch are integrated functional elements of
the SRV630.
The rotor mounted eccentrically in the pump cylinder has three vanes which divide
the pump chamber into several compartments. The volume of each change
periodically with the rotation of the rotor.
As a result of enlargement of the pump chamber that is open in the direction
of the intake port, gas is sucked in. The gas passes through the dirt trap and
the open anti-suck back valve and enters the pump chamber. As the rotor rotates
further, the vane separates part of the pump chamber from the intake port. This
part of the pump chamber is reduced, and the gas is compressed. At slightly
above atmospheric pressure the gas is expelled from the chamber via the exhaust
valves.
Oil injected into the pump chamber serves to seal, lubricate and cool the pump.
The oil entrained with the compressed gas is coarsely trapped in the bottom part
of the oil casing. Then fine filtering occurs in the 8 integrated exhaust filter
elements.
The oil trapped in the exhaust filters is returned to the stator via an oil return
line. To prevent gas flowing at atmospheric pressure from the oil reservoir into
the intake port, the oil return line is controlled by a float valve.
5

The oil cycle of the pump is maintained by the pressure difference existing between
the oil casing (pressure above atmospheric pressure) and the intake port
(pressure below atmospheric pressure).
Unintentional venting of the vacuum chamber as well as oil suck back when
switching off the pump is prevented by the built-in anti-suck back valve.
Nevertheless, the anti-suck back valve does not guarantee the same safety as
one valve.
6

2.2 Technical data
Technical data
Technical data
SRV630
SRV750
Pumping speed m³/h 630 755
Ultimate pressure（without gas
ballast）Pa
≤8
Ultimate pressure （with 1 gas
ballast）
≤70
Ultimate pressure （with 2 gas
ballast）
≤200
Water vapour
tolerance
1 gas
ballast
Pa
4000 5000
2 gas
ballast
6000 7000
Water vapour
capacity
1 gas
ballast
Kg/h
17 24
2 gas
ballast
26 34
Noise level dB(A) 76 78
Motor power KW 15 18.5
Motor rotation speed rpm 1460
Type of protection IP55
Power with ultimate pressure
（without gas ballast）
KW
6.4
Power with 100 mbar intake
pressure
12.5
Pump rated rotation speed rpm 820 1000
Weight
Without oil
Kg
675 740
With oil 695 760
7

Oil capacity(min/max) L 27/29
Intake DN100ISO-K
Exhaust See the installation diagram
★
Tested at the ultimate pressure without gas ballast, free-field
measurement at a distance of 1m
8

2.3
Lubricants
SRV pump should run with BAOSI VACUUM BSO100 oil which meet these requirements;
★
Low vapor pressure even at high temperatures
★
Minimal water vapor content and water absorption
★
Flat viscosity curve
★
Good lubrication performance
★
Good resistance to aging under mechanical stress
3
Transport and storing
3.1
Transport and packaging
Each vacuum pump passes a rigorous operating test in our factory and is packaged
to avoid transport damages.
Packing materials should be disposed off according to environmental laws or
re-cycled.
9

The pump oil is wrapped in plastic film with 5 desiccant bags inside.
The connection ports are blanked off by plastic protective caps or
self-adhesives. Take these caps or self-adhesives away before turning on the
pump.
The pump is filled with oil.
3.2
Mounting orientation
Pumps which have been filled with oil must only be moved in the upright position
(horizontally). Otherwise oil may escape. The angle of slope may not be over
10° max. Avoid any other orientations while moving the pump.
Only use the lifting lugs which are provided on the pump to lift the pump with
the specified lifting devices.
Make sure that these have been installed safety. Use suitable lifting equipment.
Make sure that all safety regulations are observed.
Inspect the pump for oil leaks as there is a danger of slipping
3.3 Storage
Before stocking the pump for a long time put it back in its original condition
and store the pump in a dry place at room temperature.
Until the pump is put back in to service again, the pump should be stored in
a dry place, preferably at room temperature (20 °C - 168 °F). Before taking
the pump out of service, it should be properly disconnected from the vacuum
system, purged with dry nitrogen and the oil should be exchange too. Drain the
water from the cooling circuit. The gas ballast must be closed and if the pump
is to be shelved for a longer period of time is should be sealed in a plastic
bag together with a desiccant (Silica gel).。
10

If the pump has been shelved for over one year, standard maintenance must be
done and the oil must be exchanged too before the pump is put in to service once
more.
4
Operation
It is essential to observe the following instructions step by step to ensure
safe start-up. Start-up may only be conducted by trained specialists.
The standard pump is not suitable for installation in explosion hazard areas
Observe all safety regulations.
4.1 Installation
The pump can be set up on any flat, horizontal surface. Under the four feet,
there are metric threaded holes (M16x1.4) for securing the pump.
The oil level cannot be read properly if the pump is tilted and lubrication
may be affected.
The pump’s ambient temperature should be between 12°C (55°F) and 40°C (104°
F).
To ensure adequate cooling of the pump, leave enough space at the air intake
and exhaust points, and for access and maintenance
4.2 Connection to system
The standard pump is not suitable for installation in exploision hazard areas
Intake side
★
Pump should be connected to inlet line without any tension. Use flex
lines or pipe unions in your inlet and exhaust lines so that they can
be easily removed for pump maintenance.
★
The maximum pressure at the inlet may not exceed atmospheric pressure
(about 1013 mbar). Never operate the pump in the presence of over
pressures at its intake.
11

★
The maximum pressure at the inlet may not exceed atmospheric pressure
(about 1013 mbar). Never operate the pump in the presence of over
pressures at its intake.
★
The cross-section of the intake line should be at least the same as the
one for the intake port. If the intake line is too narrow, it reduces
the pumping speed.
★
If the process gas contains dust, it is absolutely essential to install
a dust filter in addition to the dirt trap supplied
★
We recommend to install the dust filter horizontally. This ensures that
when removing the filter no particles fall into the intake port.
★
When pumping vapors, we recommend installing condensate traps on the
intake and exhaust sides. The intake must be installed in such a way
to avoid condensates flowing into the pump.
Exhaust side
★
The pumps have integrated exhaust filters which, even at a high gas
throughput, trap the oil mist and guarantee exhaust gas free of oil mist.
If the exhaust filters are clogged, the by pass opens at 1.5 bar,
(absolute pressure), and the filters are bypassed. As a result, the
proportion of oil in the exhaust gas as well as the pump’s oil
consumption will rise. Installing new exhaust filters will correct this
problem.
★
Check in the individual case whether an line is necessary and/or
prescribed. Volatile substances will pass through the filter. Depending
on the process gas, we recommend connecting an exhaust line ; this is
always necessary when the exhaust gases are dangerous.
★
The maximum exhaust pressure must neither exceed 1.15 bar absolute (0.15
bar relative), nor fall under atmosphere pressure minus 15 mbar.。
★
The user installs a pressure regulating device as required.
Exhaust flanges
12

★
Never operate the pump with a blocked or restricted exhaust line.
★
The SRV630 does not have an exhaust flange. For the connection method
of the exhaust pipe, refer to the SRV630 installation dimension drawing.
The cross-section of the exhaust line should be at least 100mm. If the
exhaust line is too narrow, overpressure or overheating may occur in
the pump.
★
In addition, the exhaust pipe is installed with a downward slope to
prevent condensate from flowing back into the pump. If this is not
possible, we strongly recommend installing a condenser.
★
Exhaust pipe material must be resistant to pumped gases.
Electrical connection
SRV630 motor data
Three-phase asynchronous motor
Rated voltage 220/380/220/380 V Power 15kW
Rated frequency 50/50/60/60
Hz
Weight
100kg
Rated current 52.0/30.0/50.0/29.0 A Frame no 160L
Rated rotation speed 1460/1460/1750/1750
r/min
Protection level
IP55
13

★
For the check, switch on the motor briefly. If it starts up with the
wrong direction of rotation, switch it off immediately and interchange
two phases of the connection. It is recommendable to check the direction
of rotation with a phase sequence indicator.（The motor steering can
be determined by the fan steering at the motor shaft end. The fan steering
should be clockwise when viewed at the junction box.）
★
We recommend using a phase sequence indicator to check the direction
of rotation of the motor.
★
Do not run motor in the opposite direction for a long time.
★
Before wiring the motor or changing the wiring, please make sure that
the pump is disconnected from the power supply and there is a visible
disconnection. Electrical connections must be made by a qualified
electrician in accordance with safety regulations.
14

★
The motor wiring is connected to the correct power supply voltage through
the terminals in the junction box, see the wiring diagram in the motor
box for details.
★
If the pump is de-energized by a safety switch or electrical fault,
restarting the pump can only be started manually.
4.3 Start
★
The pump is filled with oil before delivery. Please check if the oil
level is in proper position before starting. The normal oil level is
between the middle and the top of the oil window.
★
The SRV630 pump is not designed for starting under 12 °C.
★
Before the pump starts, ensure that the connected accessories meet your
application requirements and ensure safe and reliable operation.
★Do not put your hand on the air inlet to check if the pump is inhaling.
★
Do not expose any part of the body to vacuum as there is a danger of
injury. When the inlet is open, the pump must not be started. During
the operation of the pump, the vacuum joint, filler port and drain port
must not be opened.
★
The safety regulations for special applications in different situations
must be observed, especially in terms of installation, operation,
maintenance and waste disposal and transportation.
4.4 Operation
★
Take note of labels on the pump.
15

★
To avoid overloading the motor, do not start the pump more than 6 times
within one hour.、
★
If you need to start the pump more than 6 times in 1 hour, keep the pump
running continuously, install a valve on the intake line, and use the
the valve to control, instead of adjusting the start and stop of the
pump. When the valve is closed, the pump consumes very little energy.
★
When operating the pump at high intake pressure, ear protection should
be used.
Pumping of non-condensable gases
★
If the pump system contains mainly non condensable gases, the SV630 B
should be operated without gas ballast.
If the composition of the gases to be pumped is not known and if condensation
in the pump cannot be ruled out, run the pump with gas ballast valve open
in accordance with section below.
Pumping of condensable gases and vapors
★
With the gas ballast valve open and at operating temperature, the SRV630
can pump pure water vapor up to the values indicated in the Technical
Data.
★
The gas ballast valve is opened by a screwdriver. The running noise of
the pump is slightly louder if the gas ballast valve is open. Before
pumping vapors ensure that the SRV630 has warmed up for approx. 30 min.
with closed intake line and with open gas ballast valve.
★
Don’t open the pump to condensable vapors until it has warmed to
operating temperature; pumping process gas with a cold pump results in
vapors condensing in the oil.
16

★
One sign of condensation of vapors in the pump is a rise of the oil level
during operation of the pump.
★
When vapors are pumped, the pump must not be switched off immediately
after completion of the process because the condensate dissolved in the
pump oil may cause changes or corrosion. To prevent this, the pump must
continue to operate with open gas ballast valve and closed intake port
until the oil is free of condensate. We recommend operating the pump
in this mode for at least 30 min. after completion of the process.
★
In cycle operation, the pump should not be switched off between the
cycles but should continue to run with gas ballast valve open and intake
port closed (if possible via a valve). Power consumption is minimal when
the pump is operating at ultimate pressure.
★
Once all vapors have been pumped off from a process (e. g. during drying),
the gas ballast valve can be closed in order to improve the ultimate
pressure.
4.5 Stop
★The intake port of the SV630 B contains an anti-suck back valve which
closes the intake port when the pump is switched off, thus maintaining
the vacuum in the connected apparatus and preventing oil from being
sucked back into the apparatus. The valve’s functioning is not impaired
by gas ballast operation. This valve is not a safety valve, it only works
normally in a clean and undamaged state, so it is recommended to install
a control valve to avoid breaking vacuum and oil return。
★After pumping the condensable gas, the gas ballast should be turned on
before the pump is powered off, and the intake pipe should be closed to
17

allow the pump to continue to run.（see chapter 4.4）。
★When the pump has been switched off due to overheating, initiated by the
motor or its temperature detector, the pump must be cooled down to the
ambient temperature, and must only be switched on again manually after
having eliminated the cause.
★In order to prevent the pump from running up unexpectedly after a mains
power failure, the pump must be integrated in to the control sytem in
such a way that the pump can only be started by a manually operated switch.
This applies equally to emergency cut-off switches.
★In case of switching processes in connection with a pump which has warmed
up under operation conditions, the pump must then not be directly
switched on again.
4.6 Ultimate pressure
★If the values specified in the Technical Data are not reached in the
apparatus, measure the ultimate pressure directly at the pump’s intake
port after disconnecting the pump from the apparatus.
★Upon initial start-up, after prolonged idle periods or after an oil
change, it takes a while until the pump reaches the specified ultimate
pressure. The pump has to attain its operating temperature, and the pump
oil has to be degassed. We recommend operating the pump initially with
the gas ballast valve open.
★The ultimate pressure depends on the pump temperature and the pump oil
used. The best ultimate pressures can be obtained at a low pump
temperature and by using the recommended oil types.
5
Maintenance
5.1
Safety information
18

★
Depending on the process involved, dangerous substances and oil may
escape from the pump. Take the necessary safety precautions.
★
Respect the instruction concerning environment protection when
discarding used oil or exhaust filters.
★
Observe the safety regulation.
★
Do not use deformed or damaged seals. Use new seals.
★
All work must be performed by trained personnel. Improper maintenance
and repair by the user will affect the life of the pump. BAOSI does not
guarantee this.
5.2
Maintenance intervals
The intervals stated in the maintenance schedule are approximate values for
normal pump operation. Unfavorable ambient conditions and/or aggressive media may
significantly reduce the maintenance intervals.
Maintenance job Frequency Section
Check the oil level Daily A
Check the oil condition Depends on process B
1st oil change After 150 h of operation C
Subsequent oil changes Every 2000 h of operation or 6 months
（depends on application）C
Replace the oil filter At each oil change C
Replace the exhaust filter If oil mist at exhaust or annually D
Clean the dirt trap Monthly E
Check the anti-suckback valve Annually E
Clean oil cooler Annually
Clean filter of gasballast Monthly F
Checking the float valve when changing the exhaust filter
or annually G
Replacing the exhaust valves H
19

Replacing the pump module H
Disassembling and reassembling the pump module H
Control belts 6 months I
Lubrication bearing J
Cleaning the radiator fan K
To simplify the maintenance work we recommend combining several jobs.
5.3
Maintenance work
A Oil level
The pump’s oil level during operation must always be between the middle
and top edge of the oil-level glass
When necessary, switch off the pump and add the correct quantity of BSO-100
oil.
High oil consumption often indicates that exhaust filters are clogged
The oil level should be checked at least once a day.
B BSO-100 oil condition
Normally the oil is clear and transparent. If the oil darkens, it should
be changed.
If gases or liquids are dissolved in the oil, the result is a deterioration
of the ultimate pressure; the oil can be degassed by allowing the pump to run for
about 30 min. with the intake port closed and the gas ballast valve open.
To check if oil should be changed, drain some oil via the oil-drain plug
into a beaker or similar container with the pump switched off but still at operating
temperature.
Depending on the process involved, dangerous substances may escape from
the pump and oil. Take the appropriate precautions.
Observe the safety regulations.
C Oil change, replacing the oil filter
Always change the oil when the pump is switched off but still at working
20