BUSCH R5 KB 0020 D User manual

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Instruction Manual
R5
Rotary Vane Vacuum Pumps
KB 0020 D
KC 0020 D
0870152101/A0002_en / Original instructions / Modifications reserved 30/09/2021

Table of Contents
2 / 24 Instruction Manual R5 KB_KC 0020 D_EN_en
Table of Contents
1 Safety .......................................................................................................................................3
2 Product Description ..................................................................................................................4
2.1 Operating Principle .......................................................................................................... 5
2.2 Application....................................................................................................................... 5
2.3 Start Controls ................................................................................................................... 5
2.4 Optional Accessories ........................................................................................................ 5
2.4.1 Inlet Filter ..............................................................................................................5
3 Transport ..................................................................................................................................6
4 Storage .....................................................................................................................................6
5 Installation................................................................................................................................7
5.1 Installation Conditions...................................................................................................... 7
5.2 Connecting Lines / Pipes .................................................................................................. 7
5.2.1 Suction Connection ...............................................................................................8
5.2.2 Discharge Connection ........................................................................................... 8
5.3 Filling Oil.......................................................................................................................... 8
5.4 Electrical Connection ........................................................................................................ 9
5.4.1 Wiring Diagram Single-Phase Motor ..................................................................... 10
5.4.2 Wiring Diagram Three-Phase Motor...................................................................... 11
6 Commissioning.........................................................................................................................12
6.1 Conveying Condensable Vapours..................................................................................... 12
7 Maintenance.............................................................................................................................13
7.1 Maintenance Schedule ..................................................................................................... 13
7.2 Oil Level Inspection.......................................................................................................... 14
7.3 Oil Change....................................................................................................................... 14
7.4 Exhaust Filter Change....................................................................................................... 16
8 Overhaul...................................................................................................................................17
9 Decommissioning.....................................................................................................................17
9.1 Dismantling and Disposal ................................................................................................. 17
10 Spare Parts................................................................................................................................18
11 Troubleshooting .......................................................................................................................18
12 Technical Data..........................................................................................................................20
13 Oil ............................................................................................................................................20
14 EU Declaration of Conformity...................................................................................................21
15 UK Declaration of Conformity ..................................................................................................22

Safety | 1
Instruction Manual R5 KB_KC 0020 D_EN_en 3 / 24
1 Safety
Prior to handling the machine, this instruction manual should be read and understood. If
anything needs to be clarified, please contact your Busch representative.
Read this manual carefully before use and keep for future reference.
This instruction manual remains valid as long as the customer does not change anything
on the product.
The machine is intended for industrial use. It must be handled only by technically trained
personnel.
Always wear appropriate personal protective equipment in accordance with the local
regulations.
The machine has been designed and manufactured according to state-of-the-art
methods. Nevertheless, residual risks may remain. This instruction manual highlights
potential hazards where appropriate. Safety notes and warning messages are tagged
with one of the keywords DANGER, WARNING, CAUTION, NOTICE and NOTE as
follows:
DANGER
... indicates an imminent dangerous situation that will result in death or serious injuries if
not prevented.
WARNING
... indicates a potentially dangerous situation that could result in death or serious injuries.
CAUTION
... indicates a potentially dangerous situation that could result in minor injuries.
NOTICE
... indicates a potentially dangerous situation that could result in damage to property.
NOTE
... indicates helpful tips and recommendations, as well as information for efficient and
trouble-free operation.

2 | Product Description
4 / 24 Instruction Manual R5 KB_KC 0020 D_EN_en
2 Product Description
OFP
NP
MTBOS EF IN OUT
ODP OSG
IN Suction connection OS Oil separator
OUT Discharge connection MTB Motor terminal box
OFP Oil fill plug EF Exhaust filter
OSG Oil sight glass NP Nameplate
ODP Oil drain plug
NOTE
Technical term.
In this instruction manual, we consider that the term ‘machine’ refers to the
‘vacuum pump’.
NOTE
Illustrations
In this instruction manual the illustrations may differ from the machine appearance.

Product Description | 2
Instruction Manual R5 KB_KC 0020 D_EN_en 5 / 24
2.1 Operating Principle
The machine works on the rotary vane principle.
The oil seals the gaps, lubricates the vanes and takes away compression heat.
Exhaust filters separate the oil from the discharged gas.
2.2 Application
The machine is intended for the suction of air and other dry, non-aggressive, non-toxic
and non-explosive gases.
Conveying of other media leads to an increased thermal and/or mechanical load on the
machine and is permissible only after a consultation with Busch.
The machine is intended for the placement in a non-potentially explosive environment.
The machine is designed for indoor installation, in case of outdoor installation, ask your
Busch representative in order to take specific precautions.
The machine is capable of maintaining ultimate pressure, see Technical Data [►20].
The machine is suitable for continuous operation.
Permitted environmental conditions, see Technical Data [►20].
2.3 Start Controls
The machine comes without start controls. The control of the machine is to be provided
in the course of installation.
The machine can be equipped with a soft-starter.
2.4 Optional Accessories
2.4.1 Inlet Filter
The inlet filter protects the machine against dust and other solids in the process gas. The
inlet filter is available with a paper or polyester cartridge.

3 | Transport
6 / 24 Instruction Manual R5 KB_KC 0020 D_EN_en
3 Transport
NOTICE
In case the machine is already filled with oil.
Tilting a machine that is already filled with oil can cause large quantities of oil to in-
gress into the cylinder. Starting the machine with excessive quantities of oil in the
cylinder will immediately break the vanes and ruin the machine!
• Drain the oil prior to every transport or always horizontally transport the machine.
Machine weight:
see the technical data or the nameplate (NP)
• Check the machine for transport damage.
If the machine is secured to a base plate:
• Remove the machine from the base plate.
4 Storage
• Seal all apertures with adhesive tape or reuse provided caps.
If the machine is to be stored for more than 3 months:
• Wrap the machine in a corrosion inhibiting film.
• Store the machine indoors, dry, dust free and if possible in original packaging
preferably at temperatures between 0 ... 40 °C.

Installation | 5
Instruction Manual R5 KB_KC 0020 D_EN_en 7 / 24
5 Installation
5.1 Installation Conditions
NOTICE
Use of the machine outside of the permitted installation conditions.
Risk of premature failure!
Loss of efficiency!
• Take care that the installation conditions are fully complied with.
~20 cm ~20 cm
~20 cm
~20 cm
• Make sure that the environment of the machine is not potentially explosive.
• Make sure that the ambient conditions comply with the Technical Data [►20].
• Make sure that the environmental conditions comply with the protection class of the
motor and the electrical instruments.
• Make sure that the installation space or location is vented such that sufficient cooling
of the machine is provided.
• Make sure that cooling air inlets and outlets are not covered or obstructed and that
the cooling air flow is not affected adversely in any other way.
• Make sure that the oil sight glass (OSG) remains easily visible.
• Make sure that enough space remains for maintenance work.
• Make sure that the machine is placed or mounted horizontally, a maximum of 1° in
any direction is acceptable.
• Check the oil level, fill up if necessary, see Filling Oil [►8].
• Make sure that all provided covers, guards, hoods, etc. are mounted.
If the machine is installed at an altitude greater than 1000 meters above sea level:
• Contact your Busch representative, the motor should be derated or the ambient
temperature limited.

5 | Installation
8 / 24 Instruction Manual R5 KB_KC 0020 D_EN_en
5.2 Connecting Lines / Pipes
• Remove all protective covers before installation.
• Make sure that the connection lines cause no stress on the machine‘s connection; if
necessary use flexible joints.
• Make sure that the line size of the connection lines over the entire length is at least as
large as the connections of the machine.
In case of long connection lines it is advisable to use larger line sizes in order to avoid a
loss of efficiency. Seek advice from your Busch representative.
5.2.1 Suction Connection
NOTICE
Ingress of foreign objects or liquids.
Risk of damage to the machine!
If the inlet gas contains dust or other foreign solid particles:
• Install a suitable filter (5micron or less) upstream from the machine.
Connection size(s):
– G3/4
Depending on the specific order, other connection dimensions may apply.
5.2.2 Discharge Connection
CAUTION
The discharge gas contains small quantities of oil.
Risk to health!
If air is discharged into rooms where persons are present:
• Make sure that sufficient ventilation is provided.
Connection size(s):
– Without connection. The discharged gas is released to the ambient of the machine.
Depending on the specific order, other connection dimensions may apply.
• Make sure that the discharged gas will flow without obstruction. Do not shut off or
throttle the discharge line or use it as a pressurised air source.
Unless the aspirated air is discharged to the environment right at the machine:
• Make sure that the discharge line either slopes away from the machine or provide a
liquid separator or a siphon with a drain cock, so that no liquids can flow back into the
machine.

Installation | 5
Instruction Manual R5 KB_KC 0020 D_EN_en 9 / 24
5.3 Filling Oil
NOTICE
Use of an inappropriate oil.
Risk of premature failure!
Loss of efficiency!
• Only use an oil type which has previously been approved and recommended by Busch.
For oil type and oil capacity see Technical Data [►20] and Oil [►20].
1
2
Busch Oil
4
MAX
MIN
3
Check oil level
1x o-ring, part no.:
0486 000 590

5 | Installation
10 / 24 Instruction Manual R5 KB_KC 0020 D_EN_en
5.4 Electrical Connection
DANGER
Live wires.
Risk of electrical shock.
• Electrical installation work must only be executed by qualified personnel.
• Make sure that the power supply for the motor is compatible with the data on the
nameplate of the motor.
• The electrical installation must comply with applicable national and international
standards.
• Provide a lockable disconnect switch on the power line so that the machine is com-
pletely secured during maintenance tasks.
• Provide an overload protection according to EN 60204-1 for the motor.
• Busch recommends installing a D-curve circuit breaker.
• Make sure that the motor of the machine will not be affected by electric or electro-
magnetic disturbance from the mains; if necessary seek advice from Busch.
• Connect the protective earth conductor.
• Electrically connect the motor.
NOTICE
Incorrect connection.
Risk of damage to the motor!
• The wiring diagrams given below are typical. Check the inside of the terminal box for
motor connection instructions/diagrams.

Installation | 5
Instruction Manual R5 KB_KC 0020 D_EN_en 11 / 24
5.4.1 Wiring Diagram Single-Phase Motor
Motor with connection cable:

Ha = Main phase
Hi = Auxiliary phase
C = Permanent capacitor
bk = Black
bn = Brown
bu = Blue
ye/gn =Yellow/green
5.4.2 Wiring Diagram Three-Phase Motor
NOTICE
Incorrect direction of rotation.
Risk of damage to the machine!
• Operation in the wrong direction of rotation can destroy the machine in a short time!
Prior to start-up, ensure that the machine is operated in the right direction.
• Determine the intended direction of rotation with the arrow (stuck on or cast).
• Jog the motor briefly.
If the rotation of the motor must be changed:
• Switch any two of the motor phase wires.
Delta connection (low voltage): Star connection (high voltage):

6 | Commissioning
12 / 24 Instruction Manual R5 KB_KC 0020 D_EN_en
6 Commissioning
NOTICE
The machine can be shipped without oil.
Operation without oil will ruin the machine in short time!
• Prior to commissioning, the machine must be filled with oil, see Filling Oil [►8].
CAUTION
During operation the surface of the machine may reach temperatures of more than 70°C.
Risk of burns!
• Avoid contact with the machine during and directly after operation.
CAUTION
Noise of running machine.
Risk of damage to hearing!
If persons are present in the vicinity of a non noise insulated machine over extended pe-
riods:
• Make sure that ear protection is being used.
• Make sure that the installation conditions (see Installation Conditions [►7]) are met.
• Switch on the machine.
• Make sure that the maximum permissible number of starts does not exceed 12 starts
per hour. Those starts should be spread within the hour.
• Make sure that the operating conditions comply with the Technical Data [►20].
• After a few minutes of operation, check the oil level and top up if necessary.
As soon as the machine is operated under normal operating conditions:
• Measure the motor current and record it as reference for future maintenance and
troubleshooting work.
6.1 Conveying Condensable Vapours
Water vapour within the gas flow is tolerated within certain limits. The conveyance of
other vapours shall be agreed upon with Busch.
If condensable vapours are to be conveyed:
Before process:
• Warm up the machine for approximately half an hour.
After process:
• Operate the machine for approximately another half an hour.

Maintenance | 7
Instruction Manual R5 KB_KC 0020 D_EN_en 13 / 24
7 Maintenance
WARNING
Machines contaminated with hazardous material.
Risk of poisoning!
Risk of infection!
If the machine is contaminated with hazardous material:
• Wear appropriate personal protective equipment.
CAUTION
Hot surface.
Risk of burns!
• Prior to any action requiring touching the machine, let the machine cool down first.
NOTICE
Using inappropriate cleaners.
Risk of removing safety stickers and protective paint!
• Do not use incompatible solvents to clean the machine.
CAUTION
Failing to properly maintain the machine.
Risk of injuries!
Risk of premature failure and loss of efficiency!
• Respect the maintenance intervals or ask your Busch representative for service.
• Shut down the machine and lock against inadvertent start up.
• Vent the connected lines to atmospheric pressure.
If necessary:
• Disconnect all connections.

7 | Maintenance
14 / 24 Instruction Manual R5 KB_KC 0020 D_EN_en
7.1 Maintenance Schedule
The maintenance intervals depend very much on the individual operating conditions. The
intervals given below are considered as starting values which should be shortened or ex-
tended as appropriate. Particularly harsh applications or heavy duty operation, such as high
dust loads in the environment or in the process gas, other contamination or ingress of pro-
cess material, can make it necessary to shorten the maintenance intervals significantly.
Interval Maintenance work
Weekly • Check the oil level, see Oil Level Inspection [►14].
• Check the machine for oil leaks - in case of leaks have
the machine repaired (contact Busch).
Monthly In case of an inlet filter being installed:
• Check the inlet filter cartridge, replace if necessary.
Every 2000 hours, or at least
every 6 months
• Change the oil and the exhaust filters (EF).
Every 5 years • Have a major overhaul on the machine (contact Busch).
7.2 Oil Level Inspection
• Shut down the machine.
• When the machine is stopped, wait 1 minute before checking the oil level.
• Fill up if necessary, see Oil Filling [►8].
7.3 Oil Change
NOTICE
Use of an inappropriate oil.
Risk of premature failure!
Loss of efficiency!
• Only use an oil type which has previously been approved and recommended by Busch.

Maintenance | 7
Instruction Manual R5 KB_KC 0020 D_EN_en 15 / 24
1
2
Drain pan 1x o-ring, part no.:
0486 000 505
For oil type and oil capacity see Technical Data [►20] and Oil [►20].
1
2
Busch Oil
4
MAX
MIN
3
Check oil level
1x o-ring, part no.:
0486 000 590

7 | Maintenance
16 / 24 Instruction Manual R5 KB_KC 0020 D_EN_en
7.4 Exhaust Filter Change
2
1
10 mm wrench
4x
1
2
O-ring
10 mm wrench
4x
Busch genuine spare parts
1x Exhaust filter (EF),
part no.: 0532 140 154

Overhaul | 8
Instruction Manual R5 KB_KC 0020 D_EN_en 17 / 24
8 Overhaul
WARNING
Machines contaminated with hazardous material.
Risk of poisoning!
Risk of infection!
If the machine is contaminated with hazardous material:
• Wear appropriate personal protective equipment.
NOTICE
Improper assembly.
Risk of premature failure!
Loss of efficiency!
• It is highly recommended that any dismantling of the machine that goes beyond any-
thing that is described in this manual should be done through Busch.
In case of the machine having conveyed gas that was contaminated with foreign materi-
als which are dangerous to health:
• Decontaminate the machine as much as possible and state the contamination sta-
tus in a ‘Declaration of Contamination’.
Busch will only accept machines that come with a completely filled in and legally binding
signed ‘Declaration of Contamination’
(form downloadable from www.buschvacuum.com).
9 Decommissioning
• Shut down the machine and lock against inadvertent start up.
• Vent the connected lines to atmospheric pressure.
• Disconnect all connections.
If the machine is going to be stored:
• See Storage [►6].
9.1 Dismantling and Disposal
• Drain the oil.
• Remove the exhaust filters.
• Separate special waste from the machine.
• Dispose of special waste in compliance with applicable regulations.
• Dispose of the machine as scrap metal.

10 | Spare Parts
18 / 24 Instruction Manual R5 KB_KC 0020 D_EN_en
10 Spare Parts
NOTICE
Use of non-Busch genuine spare parts.
Risk of premature failure!
Loss of efficiency!
• The exclusive use of Busch genuine spare parts and consumables is recommended for
the correct functioning of the machine and to validate the warranty.
Spare part Description Part no.
Exhaust filter Includes o-ring 0532 140 154
O-ring For oil drain plug 0486 000 505
O-ring For oil fill plug 0486 000 590
If other parts are required:
• Contact your Busch representative for the detailed spare parts list.
11 Troubleshooting
DANGER
Live wires.
Risk of electrical shock.
• Electrical installation work must only be executed by qualified personnel.
CAUTION
Hot surface.
Risk of burns!
• Prior to any action requiring touching the machine, let the machine cool down first.
Illustration showing parts that may be involved during troubleshooting:
EF IS

Troubleshooting | 11
Instruction Manual R5 KB_KC 0020 D_EN_en 19 / 24
Problem Possible Cause Remedy
The machine does not start. The motor is not supplied
with the correct voltage.
• Check the power supply.
The motor is defective. • Repair the machine
(contact Busch).
The machine does not reach
the usual pressure on the
suction connection.
Oil level too low. • Top up oil.
The inlet screen (IS) is par-
tially clogged.
• Clean the inlet screen (IS).
The inlet filter cartridge (op-
tional) is partially clogged.
• Replace the inlet filter car-
tridge.
Internal parts are worn or
damaged.
• Repair the machine
(contact Busch).
The machine runs very noisi-
ly.
Stuck vanes. • Repair the machine
(contact Busch).
Defective bearings. • Repair the machine
(contact Busch).
The machine runs too hot. Insufficient cooling. • Remove dust and dirt
from the machine.
• Check the cooling fan.
Ambient temperature too
high.
• Observe the permitted
ambient temperature.
Oil level too low. • Top up oil.
The exhaust filters (EF) are
partially clogged.
• Replace the exhaust filters
(EF).
The machine fumes or ex-
pels oil droplets through the
gas discharge.
The exhaust filters (EF) are
partially clogged.
• Replace the exhaust filters
(EF).
An exhaust filter (EF) with o-
ring is not fitted properly.
• Ensure the correct posi-
tion of the exhaust filters
(EF) and the o-rings.
The oil is black. Oil change intervals are too
long.
• Flush the machine
(contact Busch).
The inlet filter (optional) is
defective.
• Replace the inlet filter.
The machine runs too hot. • See problem "The ma-
chine runs too hot".
The oil is emulsified. The machine sucked in liq-
uids or significant amounts
of vapour.
• Flush the machine
(contact Busch).
For the solution of problems not mentioned in the troubleshooting chart contact your
Busch representative.

12 | Technical Data
20 / 24 Instruction Manual R5 KB_KC 0020 D_EN_en
12 Technical Data
KB 0020 D KC 0020 D
Nominal suction capacity (50Hz / 60Hz) m³/h 20 / 24
Ultimate pressure hPa (mbar) abs. 2 20
Nominal motor rating (50Hz / 60Hz) kW 0.75
Nominal motor speed (50Hz / 60Hz) min-1 3000 / 3600
Noise level (ENISO2151) (50Hz / 60Hz) dB(A) 68 / 69
Operating temperature (50Hz / 60Hz) °C 85 / 90
Ambient temperature range °C 12 ... 30
Ambient pressure Atmospheric pressure
Oil capacity l 0.45
Weight approx. kg ~19
13 Oil
VM 032 VM 068 VSB 032 VSB 068
ISO-VG 32 68 32 68
Part number 1L packaging 0831 000 086 0831 102 492 0831 168 343 0831 168 347
Part number 5L packaging 0831 000 087 0831 102 493 0831 168 344 0831 168 348
Oil Type Mineral Oil Mineral Oil Polyalphaolefin
(PAO)
Polyalphaolefin
(PAO)
Remark Single-Phase motor Three-Phase motor Single-phase motor;
Food applications
(H1)
Three-phase motor;
Food applications
(H1)
VSA 032 VSA 068
ISO-VG 32 68
Part number 1L packaging 0831 163 958 0831 163 964
Part number 5L packaging 0831 163 961 0831 163 965
Oil Type Polyalphaolefin (PAO) Polyalphaolefin (PAO)
Remark Single-phase motor;
Food applications (H1);
Anti-corrosion;
Not suitable for continuous operation
Three-phase motor;
Food applications (H1);
Anti-corrosion;
Not suitable for continuous operation
In case of unfavourable ambient temperature, other oil viscosities may be used. Please consult your Busch repre-
sentative for more details.
To know which oil has been filled in the machine, please refer to the nameplate (NP).