BUSCH Mink MI 1502 User manual

Installation and
Operating Instructions
Compressors
Mink MI 1502
Busch Produktions GmbH
chauinslandstr. 1
79689 Maulburg
Germany
0870152627 / 101117 / Original instructions / Modifications reserved

Table of Contents
Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Product Description. . . . . . . . . . . . . . . . . . . . . . . . . 3
Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Principle of Operation . . . . . . . . . . . . . . . . . . . . . . 3
Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Start Controls. . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Intended Use . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Safety Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Noise Emission . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Transport . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Transport in Packaging . . . . . . . . . . . . . . . . . . . . . . 4
Transport without Packaging . . . . . . . . . . . . . . . . . . . 4
Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Short-term Storage . . . . . . . . . . . . . . . . . . . . . . . . 4
Conservation . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Installation and Commissioning . . . . . . . . . . . . . . . . . . 4
Installation Prerequisites . . . . . . . . . . . . . . . . . . . . . 4
Mounting Position and Space . . . . . . . . . . . . . . . . . 5
Gas Inlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pressure Connection . . . . . . . . . . . . . . . . . . . . . . 5
Electrical Connection / Controls . . . . . . . . . . . . . . . . 5
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Checking Synchronising Gear Oil . . . . . . . . . . . . . . . 5
Connecting Electrically . . . . . . . . . . . . . . . . . . . . . 6
Connecting Lines/Pipes . . . . . . . . . . . . . . . . . . . . 6
Recording of Operational Parameters . . . . . . . . . . . . . 6
Operation Notes . . . . . . . . . . . . . . . . . . . . . . . . . 6
Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Conveying Condensable Vapours . . . . . . . . . . . . . . . 7
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Maintenance Schedule . . . . . . . . . . . . . . . . . . . . . . 7
Monthly: . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Every 3 Months:. . . . . . . . . . . . . . . . . . . . . . . 7
Every 6 Months: . . . . . . . . . . . . . . . . . . . . . . 7
Every Year: . . . . . . . . . . . . . . . . . . . . . . . . . 7
Every 20000 Operating Hours, At the Latest after 6 Years: . 8
Changing Synchronising Gear Oil. . . . . . . . . . . . . . . . . 8
Overhaul . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Removal from Service. . . . . . . . . . . . . . . . . . . . . . . . 8
Temporary Removal from Service. . . . . . . . . . . . . . . . . 8
Recommissioning . . . . . . . . . . . . . . . . . . . . . . . . . 8
Dismantling and Disposal . . . . . . . . . . . . . . . . . . . . . 8
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Sectional Drawing . . . . . . . . . . . . . . . . . . . . . . . . . 12
Spare Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Spare Parts Kits . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Oil. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
EC-Declaration of Conformity . . . . . . . . . . . . . . . . . . . 14
Technichal Data . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Busch – All over the World in Industry . . . . . . . . . . . . . . 16
Preface MI 1502 BP
page 2 0870152627 / 101117
Preface
Congratulations on your purchase of the Busch compressor. With
watchful observation of the field’s requirements, innovation and steady
development Busch delivers modern vacuum and pressure solutions
worldwide.
These operating instructions contain information for
–product description,
–safety,
–transport,
–storage,
–installation and commissioning,
–maintenance,
–overhaul,
–troubleshooting and
–spare parts
of the compressor.
For the purpose of these instructions, “handling” the compressor
means the transport, storage, installation, commissioning, influence on
operating conditions, maintenance, troubleshooting and overhaul of
the compressor.
Prior to handling the compressor these operating instructions shall be
read and understood. If anything remains to be clarified please con-
tact your Busch representative!
Keep these operating instructions and, if applicable, other pertinent
operating instructions available on site.

Product Description
Use
The compressor is intended for
–the compression
of
–air and other dry, non-aggressive, non-toxic and non-explosive
gases
Conveying media with a lower or higher density than air leads to an in-
creased thermal and/or mechanical load on the compressor and is per-
missible only after prior consultation with Busch.
Max. allowed temperature of the inlet gas: 40 °C
Standard-version:
The gas shall be free from vapours that would condensate under
the temperature and pressure conditions inside the compressor.
Version “Aqua”:
The compressor features the corrosion protection coating CPC and
is capable of conveying water vapour (Úpage 7: Conveying
Condensable Vapours). Conveyance of other vapours shall be
agreed upon with Busch. Conveyance of water or other liquids in
liquid phase increases the power consumption and shall therefore
be avoided (risk of drive overload).
The compressor is intended for the placement in a non-potentially ex-
plosive environment.
The compressor is thermally suitable for continuous operation
(100 percent duty).
Max. permissible number of startings per hour: 12
The maximum allowed pressure on the pressure connection (i) is
0.8 ... 2.0 barg (the nameplate of the compressor indicates the valid
pressure). By means of process control and/or pressure relief valves it
must be made sure that the maximum allowed pressure will not be
exceeded.
Principle of Operation
The compressor works on the claw principle.
The components are dimensioned such, that on the one hand there is
never contact between the two claws or between a claw and the cylin-
der, on the other hand the gaps are small enough to keep the
clearance loss between the chambers low.
In order to avoid the suction of solids, the compressor is equipped with
a screen (715) in the gas inlet.
In order to avoid reverse rotation after switching off, the compressor is
equipped with a non-return valve (714).
The compressor compresses the inlet gas absolutely oil-free. A lubrica-
tion of the pump chamber is neither necessary nor allowed.
Cooling
The compressor is cooled by
–radiation of heat from the surface of the compressor
–the air flow from the fan wheel of the drive motor
–the process gas
–the air flow from the fan wheel mounted opposite the drive motor,
driven by a separate motor (e)
Start Controls
The compressor comes without start controls. The control of the
compressor is to be provided in the course of installation.
Safety
Intended Use
Definition: For the purpose of these instructions, “handling” the
compressor means the transport, storage, installation, commissioning,
influence on operating conditions, maintenance, troubleshooting and
overhaul of the compressor.
The compressor is intended for industrial use. It shall be handled only
by qualified personnel.
The allowed media and operational limits (Úpage 3: Product De-
scription) and the installation prerequisites (Úpage 4: Installation
Prerequisites) of the compressor shall be observed both by the manu-
facturer of the machinery into which the compressor is to be incorpo-
rated and by the operator.
The maintenance instructions shall be observed.
Prior to handling the compressor these installation and operating in-
structions shall be read and understood. If anything remains to be
clarified please contact your Busch representative!
MI 1502 BP Product Description
0870152627 / 101117 page 3
a Directional arrow
b Gas inlet
c Silencer
d Safety valve
e Oil fill plug (=venting valve)
f Separate fan
g Oil sight glass
h Oil drain plug
i Gas discharge
j Base frame

Safety Notes
The compressor has been designed and manufactured according to
state-of-the-art methods. Nevertheless, residual risks may remain.
These operating instructions highlight potential hazards where appro-
priate. Safety notes are tagged with one of the keywords DANGER,
WARNING and CAUTION as follows:
DANGER_a
Disregard of this safety note will always lead to accidents with fa-
tal or serious injuries.
WARNING_a
Disregard of this safety note may lead to accidents with fatal or se-
rious injuries.
CAUTION_a
Disregard of this safety note may lead to accidents with minor inju-
ries or property damage.
Noise Emission
For the sound pressure level in free field according to EN ISO 2151
Úpage 15: Technical Data.
CAUTION_a4
The compressor emits noise of high intensity in a narrow band.
Risk of damage to the hearing.
Persons staying in the vicinity of a non noise insulated compressor
over extended periods shall wear ear protection.
Transport
Transport in Packaging
Packed on a pallet the compressor is to be transported with a forklift.
Transport without Packaging
In case the compressor is packed in a cardboard box with inflated
cushions:
◆Remove the inflated cushions from the box
In case the compressor is in a cardboard box cushioned with rolled cor-
rugated cardboard:
◆Remove the corrugated cardboard from the box
In case the compressor is laid in foam:
◆Remove the foam
In case the compressor is bolted to a pallet or a base plate:
◆Remove the bolting between the compressor and the pal-
let/base plate
In case the compressor is fastened to the pallet by means of tightening
straps:
◆Remove the tightening straps
CAUTION_af
Do not walk, stand or work under suspended loads.
●Attach lifting gear securely to the eyelets on the base frame
●Attach another belt/rope as a protection against overturning to a
suitable point (eyebolt, drive motor flange etc.)
●Attach the lifting gear to a crane hook with safety latch
●Loosely hang the additional belt/rope into the crane hook
●Lift the compressor with a crane
In case the compressor was bolted to a pallet or a base plate:
◆Remove the stud bolts from the rubber feet
Storage
Short-term Storage
●Make sure that the gas inlet and the pressure connection are
closed (leave the provided plugs in)
●Store the compressor
–if possible in original packaging,
–indoors,
–dry,
–dust free and
–vibration free
Conservation
In case of adverse ambient conditions (e.g. aggressive atmosphere, fre-
quent temperature changes) conserve the compressor immediately. In
case of favourable ambient conditions conserve the compressor if a
storage of more than 3 months is scheduled.
●Make sure that all ports are firmly closed; seal all ports that are not
sealed with PTFE-tape, gaskets or o-rings with adhesive tape
Note: VCI stands for “volatile corrosion inhibitor”. VCI-products (film,
paper, cardboard, foam) evaporate a substance that condenses in mo-
lecular thickness on the packed good and by its electro-chemical prop-
erties effectively suppresses corrosion on metallic surfaces. However,
VCI-products may attack the surfaces of plastics and elastomers. Seek
advice from your local packaging dealer! Busch uses CORTEC
VCI 126 R film for the overseas packaging of large equipment.
●Wrap the compressor in VCI film
●Store the compressor
–if possible in original packing,
–indoors,
–dry,
–dust free and
–vibration free.
For commissioning after conservation:
●Make sure that all remains of adhesive tape are removed from the
ports
●Commission the compressor as described in the chapter Installation
and Commissioning (Úpage 4)
Installation and
Commissioning
Installation Prerequisites
CAUTION_a
In case of non-compliance with the installation prerequisites, partic-
ularly in case of insufficient cooling:
Risk of damage or destruction of the compressor and adjoining plant
components!
Risk of injury!
The installation prerequisites must be complied with.
Transport MI 1502 BP
page 4 0870152627 / 101117

●Make sure that the integration of the compressor is carried out
such that the essential safety requirements of the Machine Direc-
tive 2006/42/EC are complied with (in the responsibility of the de-
signer of the machinery into which the compressor is to be
incorporated; Úpage 14: note in the EC-Declaration of Confor-
mity)
Mounting Position and Space
●Make sure that the environment of the compressor is not poten-
tially explosive
●Make sure that the following ambient conditions will be complied
with:
–ambient temperature: 12 ... 40 °C
–ambient pressure: atmospheric
●Make sure that the environmental conditions comply with the pro-
tection class of the drive motor (according to the nameplate)
●Make sure that the compressor will be placed or mounted horizon-
tally
●Make sure that the base for placement / mounting base is even
●Make sure that in order to warrant a sufficient cooling there will be
a clearance of minimum 1 m between the compressor and nearby
walls
●Make sure that no heat sensitive parts (plastics, wood, cardboard,
paper, electronics) will touch the surface of the compressor
●Make sure that the installation space or location is vented such
that a sufficient cooling of the compressor is warranted
CAUTION_ac
During operation the surface of the compressor may reach tempera-
tures of more than 70 °C.
Risk of burns!
●Make sure that the compressor will not be touched inadvertently
during operation, provide a guard if appropriate
●Make sure that the sight glass (g, 76) of the synchronising gear will
remain accessible
In case the synchronising gear oil change is planned to be carried out
on location:
◆Make sure that the drain port (h, 80) and the filling port (e,
72) of the synchronising gear will remain easily accessible
Gas Inlet
CAUTION_a
Intruding foreign objects or liquids can destroy the compressor.
In case the inlet gas can contain dust or other foreign solid particles:
◆Make sure that a suitable filter (5 micron or less) is installed
upstream the compressor
The following guidelines for the suction line do not apply, if the air to
be compressed is taken in right at the compressor.
●Make sure that the suction line fits to the gas inlet (b) of the
compressor
●Make sure that the gas will be sucked through a vacuum-tight
flexible hose or a pipe
In case of using a pipe:
◆Make sure that the pipe will cause no stress on the
compressor’s connection, if necessary use an expansion joint
●Make sure that the line size of the suction line over the entire
length is at least as large as the gas inlet (b) of the compressor
In case the length of the suction line exceeds 2 m it is prudent to use
larger line sizes in order to avoid a loss of efficiency and an overload of
the compressor. Seek advice from your Busch representative!
Version “Aqua”, if very humid process gases and/or adverse operating
cycles bear the risk, that condensates remain in the compressor:
◆Provide a shut-off valve, a drip-leg and a drain cock in the suc-
tion line, so that condensates can be drained from the suction
line
◆Provide a valve for the unthrottled suction of ambient air (am-
bient air valve) between the shut-off valve and the compressor
(in order to dry the compressor after process end).
●Make sure that the suction line does not contain foreign objects,
e.g. welding scales
Pressure Connection
●Make sure that the pressure line fits to the pressure connection (i)
of the compressor
●Make sure that the pressure connection is connected to a pres-
sure-tight flexible hose or a pipe
●Make sure that the pressure line is designed for 2 barg and 250 °C
In case of using a pipe:
◆Make sure that the pipe will cause no stress on the
compressor’s connection, if necessary use an expansion joint
●Make sure that the line size of the pressure line over the entire
length is at least as large as the pressure connection (i) of the
compressor
In case the length of the pressure line exceeds 2 m it is prudent to use
larger line sizes in order to avoid a loss of efficiency and an overload of
the compressor. Seek advice from your Busch representative!
●Make sure that the pressure line either slopes away from the
compressor or provide a liquid separator or a drip leg with a drain
cock, so that no liquids can back up into the compressor
Electrical Connection / Controls
●Make sure that the stipulations acc. to the EMC-Directive
2004/108/EC and Low-Voltage-Directive 2006/95/EC as well as
the EN-standards, electrical and occupational safety directives and
the local or national regulations, respectively, are complied with
(this is the responsibility of the designer of the machinery into
which the compressor is to be incorporated; Úpage 14: note in
the EC-Declaration of Conformity).
●Make sure that the power supply for the drive motor is compatible
with the data on the nameplate of the drive motor
●Make sure that an overload protection according to EN 60204-1 is
provided for the drive motor
●Make sure that the drive of the compressor will not be affected by
electric or electromagnetic disturbance from the mains; if necessary
seek advice from the Busch service
In case of mobile installation:
◆Provide the electrical connection with grommets that serve as
strain-relief
●Make sure that the power supply for the separate fan motor (e)
complies with the data on the nameplate of the fan motor
It is recommended to provide for a monitoring of the fan motor (e) in
order to either issue an alarm or shut down the compressor in case of a
fan failure.
Installation
Mounting
●Make sure that the installation prerequisites (Úpage 4) are com-
plied with
●Set down or mount the compressor at its location
Checking Synchronising Gear Oil
The compressor is delivered with oil filled synchronising gear.
MI 1502 BP Installation and Commissioning
0870152627 / 101117 page 5

The level shall be slightly above the middle of the sight glass (g, 76).
●Check on the sight glass (g, 76) that the proper amount of oil is
filled
Connecting Electrically
WARNING_ab
Risk of electrical shock, risk of damage to equipment.
Electrical installation work must only be executed by qualified per-
sonnel that knows and observes the following regulations:
- IEC 364 or CENELEC HD 384 or DIN VDE 0100, respectively,
- IEC-Report 664 or DIN VDE 0110,
- BGV A2 (VBG 4) or corresponding national accident prevention
regulation.
CAUTION_a
The connection schemes given below are typical. Depending on the
specific order or for certain markets deviating connection schemes
may apply.
Risk of damage to the drive motor!
The inside of the terminal box shall be checked for drive motor con-
nection instructions/schemes.
●Electrically connect the drive motor
●Connect the protective earth conductor
Delta connection (low voltage):
Star connection (high voltage):
CAUTION_a
Operation in the wrong direction of rotation can destroy the
compressor in short time.
Prior to starting-up it must be made sure that the compressor is op-
erated in the proper direction.
●Determine the intended direction of rotation with the arrow (a)
(stuck on or cast)
●“Bump” the drive motor
●Watch the fan wheel of the drive motor and determine the direc-
tion of rotation just before the fan wheel stops
If the rotation must be changed:
◆Switch any two of the drive motor wires
●Electrically connect the motor (e) of the separate fan
Connecting Lines/Pipes
●Connect the suction line
Installation without suction line:
◆Make sure that the gas inlet (b) is open
●Connect the pressure line
●Make sure that all provided covers, guards, hoods etc. are
mounted
●Make sure that cooling air inlets and outlets are not covered or ob-
structed and that the cooling air flow is not affected adversely in
any other way
Recording of Operational Parameters
As soon as the compressor is operated under normal operating
conditions:
●Measure the drive motor current and record it as reference for fu-
ture maintenance and troubleshooting work
Operation Notes
Use
CAUTION_a
The compressor is designed for operation under the conditions de-
scribed below.
In case of disregard risk of damage or destruction of the compressor
and adjoining plant components!
Risk of injury!
The compressor must only be operated under the conditions de-
scribed below.
The compressor is intended for
–the compression
of
–air and other dry, non-aggressive, non-toxic and non-explosive
gases
Conveying media with a lower or higher density than air leads to an in-
creased thermal and/or mechanical load on the compressor and is per-
missible only after prior consultation with Busch.
Max. allowed temperature of the inlet gas: 40 °C
Standard-version:
The gas shall be free from vapours that would condensate under
the temperature and pressure conditions inside the compressor.
Version “Aqua”:
The compressor features the corrosion protection coating CPC and
is capable of conveying water vapour (Úpage 7: Conveying
Condensable Vapours). Conveyance of other vapours shall be
agreed upon with Busch. Conveyance of water or other liquids in
liquid phase increases the power consumption and shall therefore
be avoided (risk of drive overload).
The compressor is intended for the placement in a non-potentially ex-
plosive environment.
The compressor is thermally suitable for continuous operation
(100 percent duty).
Max. permissible number of startings per hour: 12
The maximum allowed pressure on the pressure connection (i) is
0.8 ... 2.0 barg (the nameplate of the compressor indicates the valid
pressure). By means of process control and/or pressure relief valves it
Installation and Commissioning MI 1502 BP
page 6 0870152627 / 101117

must be made sure that the maximum allowed pressure will not be
exceeded.
CAUTION_ac
During operation the surface of the compressor may reach tempera-
tures of more than 70 °C.
Risk of burns!
The compressor shall be protected against contact during operation,
it shall cool down prior to a required contact or heat protection
gloves shall be worn.
CAUTION_a4
The compressor emits noise of high intensity in a narrow band.
Risk of damage to the hearing.
Persons staying in the vicinity of a non noise insulated compressor
over extended periods shall wear ear protection.
●Make sure that all provided covers, guards, hoods etc. remain
mounted
●Make sure that protective devices will not be disabled
●Make sure that cooling air inlets and outlets will not be covered or
obstructed and that the cooling air flow will not be affected ad-
versely in any other way
●Make sure that the installation prerequisites (Úpage 4: Installation
Prerequisites) are complied with and will remain complied with,
particularly that a sufficient cooling will be ensured
Conveying Condensable Vapours
Version “Aqua”:
CAUTION_a
Due to the corrosion protection coating CPC the compressor is ca-
pable of conveying water vapour.
Very humid process gases and/or adverse operating cycles can lead
to residual condensates, though, which cause corrosion.
If this is the case, it is necessary to counteract residual condensates
by warming up the compressor, conveyance of ambient air after
process end and regular draining of the anti-pulsation chamber.
◆Close the shut-off valve in the suction line
◆Warm up the compressor for approx. 10 minutes
At process start:
◆Open the shut-off valve in the suction line
At the process end:
◆Close the shut-off valve in the suction line
◆Open the ambient air valve
◆Operate the compressor for another approx. 10 minutes
◆Close the ambient air valve
CAUTION_a
During operation of the compressor the anti-pulsation chamber is
under pressure.
Risk of injury when the condensate drain cock is opened!
Drain condensate only when the compressor is shut down and the
pressure connection (i) is vented to atmospheric pressure.
◆Regularly drain condensate from the anti-pulsation chamber
Maintenance
DANGER_age32
In case the compressor conveyed gas that was contaminated with
foreign materials which are dangerous to health, harmful material
can reside in filters.
Danger to health during inspection, cleaning or replacement of fil-
ters.
Danger to the environment.
Personal protective equipment must be worn during the handling
of contaminated filters.
Contaminated filters are special waste and must be disposed of
separately in compliance with applicable regulations.
CAUTION_ac
During operation the surface of the compressor may reach tempera-
tures of more than 70 °C.
Risk of burns!
●Prior to disconnecting connections make sure that the connected
pipes/lines are vented to atmospheric pressure
Maintenance Schedule
Note: The maintenance intervals depend very much on the individual
operating conditions. The intervals given below shall be considered as
starting values which should be shortened or extended as appropriate.
Particularly heavy duty operation, such like high dust loads in the envi-
ronment or in the process gas, other contaminations or ingress of pro-
cess material, can make it necessary to shorten the maintenance
intervals significantly.
Monthly:
●Make sure that the compressor is shut down and locked against in-
advertent start up
In case an inlet air filter (b) is installed:
◆Check the inlet air filter (b), if necessary replace
In case of operation in a dusty environment:
◆Clean as described under Úpage 7: Every 6 Months:
Every 3 Months:
●Make sure that the compressor is shut down
●Check the level of the synchronising gear oil
The level shall be slightly above the middle of the sight glass (g, 76).
The level of the synchronising gear should stay constant over the life-
time of the oil. If the level does fall, the gear is leaky and the
compressor requires repair (Busch service).
Every 6 Months:
●Make sure that the housing is free from dust and dirt, clean if nec-
essary
●Make sure that the compressor is shut down and locked against in-
advertent start up
●Clean the fan cowlings, fan wheels, the ventilation grilles and cool-
ing fins
●Fill in grease (Klüber Asonic HQ 72-102, Busch Art.No.
0821 108 187) at both grease nipples, until grease appears at the
excess grease ports
Every Year:
●Make sure that the compressor is shut down and locked against in-
advertent start up
MI 1502 BP Maintenance
0870152627 / 101117 page 7

In case an inlet air filter (b) is installed:
◆Replace the inlet air filter (b)
●Check the inlet screen (715), clean if necessary
Every 20000 Operating Hours, At the Latest after
6 Years:
Note
gear oil Busch VS 150 only. Other gear oils reduce the change interval.
●Change the synchronising gear oil
Changing Synchronising Gear Oil
●Make sure that the compressor is shut down and locked against in-
advertent start up
●Undo the venting valve (e, 72) for venting
●Place a drain tray underneath the drain plug (h, 80)
●Open the drain plug (h, 80) and drain the oil
●Make sure that the seal ring (81) on the drain plug (h, 80) is ser-
viceable, replace if necessary
●Firmly reinsert the drain plug (h, 80) together with the seal ring
(81)
●Remove the venting valve (e, 72) completely
●Fill in new gear oil until the level is slightly above the middle of the
sight glass (g, 76)
●Make sure that the seal ring on the venting valve (e, 72) is undam-
aged, if necessary replace the venting valve (e, 72)
●Firmly reinsert the venting valve (e, 72) together with the seal ring
●Dispose of the used oil in compliance with applicable regulations
Overhaul
CAUTION
In order to achieve best efficiency and a long life the compressor
_a
was assembled and adjusted with precisely defined tolerances.
This adjustment will be lost during dismantling of the compressor.
It is therefore strictly recommended that any dismantling of the
compressor that is beyond of what is described in this manual shall
be done by Busch service.
DANGER
In case the compressor conveyed gas that was contaminated with
_age32
foreign materials which are dangerous to health, harmful material
can reside in pores, gaps and internal spaces of the compressor.
Danger to health during dismantling of the compressor.
Danger to the environment.
Prior to shipping the compressor shall be decontaminated as good
as possible and the contamination status shall be stated in a “Dec-
laration of Contamination” (form downloadable from
www.busch-vacuum.com).
Busch service will only accept compressors that come with a completely
filled in and legally binding signed “Declaration of Contamination”
Removal from Service
Temporary Removal from Service
●
(form downloadable from www.busch-vacuum.com).
Prior to disconnecting pipes/lines make sure that all pipes/lines are
vented to atmospheric pressure
Recommissioning
●Observe the chapter Installation and Commissioning ( page 4)
Dismantling and Disposal
DANGER
In case the compressor conveyed gas that was contaminated with
_age32
foreign materials which are dangerous to health, harmful material
can reside in pores, gaps and internal spaces of the compressor.
Danger to health during dismantling of the compressor.
Danger to the environment.
During dismantling of the compressor personal protective equip-
ment must be worn.
The compressor must be decontaminated prior to disposal.
●Drain the oil
●Make sure that materials and components to be treated as special
waste have been separated from the compressor
●Make sure that the compressor is not contaminated with harmful
foreign material
According to the best knowledge at the time of printing of this manual
the materials used for the manufacture of the compressor involve no
risk.
●Dispose of the used oil in compliance with applicable regulations
●Dispose of the compressor as scrap metal
Maintenance MI 1502 BP
page 8 0870152627 / 101117
: The change interval of 20000 operating hours is valid for the

Troubleshooting
WARNING_ab
Risk of electrical shock, risk of damage to equipment.
Electrical installation work must only be executed by qualified personnel that knows and observes the following regulations:
- IEC 364 or CENELEC HD 384 or DIN VDE 0100, respectively,
- IEC-Report 664 or DIN VDE 0110,
- BGV A2 (VBG 4) or equivalent national accident prevention regulation.
CAUTION_ac
During operation the surface of the compressor may reach temperatures of more than 70 °C.
Risk of burns!
Let the compressor cool down prior to a required contact or wear heat protection gloves.
Problem Possible Cause Remedy
The compressor does not reach the usual pres-
sure
The drive motor draws a too high current
(compare with initial value after commission-
ing)
Filling the system takes too long
Building up pressure in the system takes too
long
The pressure system or pressure line is not
leak-tight
Check the hose or pipe connections for possi-
ble leak
The pressure relief valve/regulating system is
misadjusted or defective
Adjust, repair or replace, respectively
The screen (715) in the gas inlet (b) is partially
clogged
Clean the screen (715)
If cleaning is required too frequently install a
filter upstream
In case a filter (b) is installed on the gas inlet
(b):
The filter (b) on the gas inlet (b) is partially
clogged
Clean or replace the inlet air filter (b), respec-
tively
Partial clogging in the suction, discharge or
pressure line
Remove the clogging
Long suction, discharge or pressure line with
too small diameter
Use larger diameter
The valve disk of the inlet non-return valve is
stuck in closed or partially open position
Disassemble the inlet, clean the screen (715)
and the valve (714) as required and reassem-
ble
Internal parts are worn or damaged Repair the compressor (Busch service)
The compressor does not start The drive motor is not supplied with the cor-
rect voltage or is overloaded
Supply the drive motor with the correct volt-
age
The drive motor starter overload protection is
too small or trip level is too low
Compare the trip level of the drive motor
starter overload protection with the data on
the nameplate, correct if necessary
In case of high ambient temperature: set the
trip level of the drive motor starter overload
protection 5 percent above the nominal drive
motor current
One of the fuses has blown Check the fuses
The connection cable is too small or too long
causing a voltage drop at the compressor
Use sufficiently dimensioned cable
MI 1502 BP Troubleshooting
0870152627 / 101117 page 9

The compressor or the drive motor is blocked Make sure the drive motor is disconnected
from the power supply
Remove the fan cover
Try to turn the drive motor with the
compressor by hand
If the unit is still frozen: remove the drive mo-
tor and check the drive motor and the
compressor separately
If the compressor is blocked:
Repair the compressor (Busch service)
The drive motor is defective Replace the drive motor (Busch service)
The compressor is blocked Solid foreign matter has entered the
compressor
Repair the compressor (Busch service)
Make sure the suction line is equipped with a
screen
If necessary additionally provide a filter
Corrosion in the compressor from remaining
condensate
Repair the compressor (Busch service)
Check the process
Observe the chapter Conveying Condensable
Vapours (Úpage 7)
The compressor was run in the wrong direc-
tion
Repair the compressor (Busch service)
When connecting the compressor make sure
the compressor will run in the correct direction
(Úpage 5: Installation)
The drive motor is running, but the
compressor stands still
The coupling between the drive motor and
the compressor is defective
Replace the coupling element
The compressor starts, but labours or runs
noisily or rattles
The drive motor draws a too high current
(compare with initial value after commission-
ing)
Loose connection(s) in the drive motor termi-
nal box
Not all drive motor coils are properly con-
nected
The drive motor operates on two phases only
Check the proper connection of the wires
against the connection diagram
Tighten or replace loose connections
The compressor runs in the wrong direction Verification and rectification Úpage 4: Instal-
lation and Commissioning
Foreign objects in the compressor
Stuck bearings
Repair the compressor (Busch service)
The compressor runs very noisily Defective bearings Repair the compressor (Busch service)
Worn coupling element Replace the coupling element
Low oil level in the synchronising gear The synchronising gear is leaky
Repair the compressor (Busch service)
Synchronising gear damaged due to operation
with low oil level
Repair the compressor (Busch service)
The compressor runs very hot Insufficient air ventilation Make sure that the cooling of the compressor
is not impeded by dust/dirt
Clean the fan cowlings, the fan wheels, the
ventilation grilles and the cooling fins
Install the compressor in a narrow space only
if sufficient ventilation is ensured
Ambient temperature too high Observe the permitted ambient temperatures
Temperature of the inlet gas too high Observe the permitted temperatures for the
inlet gas
Insufficient gas transfer Provide a pressure relief valve
Mains frequency or voltage outside tolerance
range
Provide a more stable power supply
Troubleshooting MI 1502 BP
page 10 0870152627 / 101117

In case a pressure relief valve/regulating system
is installed:
The pressure relief valve/regulating system is
misadjusted or defective
Adjust, repair or replace, respectively
Partial clogging of filters or screens
Partial clogging in the suction, discharge or
pressure line
Remove the clogging
Long suction, discharge or pressure line with
too small diameter
Use larger diameter
MI 1502 BP Troubleshooting
0870152627 / 101117 page 11

Sectional Drawing
Sectional Drawing MI 1502 BP
page 12 0870152627 / 101117

Spare Parts
Note
please always quote the type (“Type”) and the serial no. (“No”) of the
compressor. This will allow Busch service to check if the compressor is
compatible with a modified or improved part.
The exclusive use of genuine spare parts and consumables is a pre-
requisite for the proper function of the compressor and for the grant-
ing of warranty, guarantee or goodwill.
Your point of contact for service and spare parts in the United
Kingdom:
Busch (UK) Ltd.
Hortonwood 30-35
Telford
Shropshire
TF1 7YB
Tel: [phone]
Fax: [phone]
Your point of contact for service and spare parts in Ireland:
Busch Ireland Ltd.
A10-11 Howth Junction Business Centre
Kilbarrack, Dublin 5
Tel: [phone]
Fax: [phone]
Your point of contact for service and spare parts in the USA:
Busch lnc.
516-B Viking Drive
Virginia Beach, VA 23452
Tel: 1-800-USA-PUMP (872-7867)
Your point of contact for service and spare parts in Canada:
Busch Vacuum Technics Inc.
1740, Boulevard Lionel Bertrand
Boisbriand (Montréal)
Québec J7H 1N7
Tel: [phone]
Fax: [phone]
Your point of contact for service and spare parts in Australia:
Busch Australia Pty. Ltd.
30 Lakeside Drive
Broadmeadows, Vic. 3047
Tel: [phone]
Fax: [phone]
Your point of contact for service and spare parts in New Zealand:
Busch New Zealand Ltd.
Unit D, Arrenway Drive
Albany, Auckland 1311
P O Box 302696
North Harbour, Auckland 1330
Tel: [phone]
Fax: [phone]
Find the list of Busch companies all over the world (by the time of the
publication of these installation and operating instructions) on
page 16 (rear cover page).
Find the up-to-date list of Busch companies and agencies all over the
world on the internet atwww.busch-vacuum.com.
Pos. Part Qty Part no.
72 Venting valve (=oil fill plug)
with seal ring 1 0543 107 407
76 Sight glass 1 0583 000 001
77 Seal ring for sight glass 1 0480 000 271
80 Plug 1 0415 000 006
81 Seal ring 1 0484 000 046
82 Seal ring for plug with magnet 1 0482 137 352
510 Flexible coupling, complete 1 0510 118 749
714 Inlet flange, lower part, with
non-return valve (MI 1352 BV) 1 0916 000 670
714 Inlet flange, lower part, with
non-return valve (MI 1502 BV) 1 0916 000 672
715 Screen (MI 1352 BV) 1 0534 000 041
715 Screen (MI 1502 BP) 1 0534 000 084
—Filter cartridge, paper, for inlet
filter (MI 1352 BV) 1 0532 000 005
—Filter cartridge, paper, for inlet
filter (MI 1502 BV) 1 0532 000 006
Spare Parts Kits
Spare parts kit Part no.
Overhaul kit (incl. set of seals, marking “VT”
and “DT”) 0993 120 489
Set of seals (marking “DT”) 0990 120 487
Oil
Denomination Busch VS 150
ISO-VG
Base PAO
Density [g/cm³] 0.846
Kinematic viscosity at 40 °C
[mm²/s] 150
Kinematic viscosity at 100 °C
[mm²/s] 19.8
Flashpoint [°C] 236
Pourpoint [°C] –54
Part no. 1 l packaging
Filling quantity, approx. [l] 0.6
MI 1502 BP Spare Parts
0870152627 / 101117 page 13
: When ordering spare parts or accessories acc. to the table below
150
0831 164 883

EC-Declaration of Conformity MI 1502 BP
page 14 0870152627 101117
EC-Declaration of Conformity
Note: This Declaration of Conformity and the CE-mark affixed to the nameplate are valid for the machine within the Busch scope of delivery. This
Declaration of Conformity is issued under the sole responsibility of the manufacturer.
When this machine is integrated into a superordinate machinery the manufacturer of the superordinate machinery (this can be the operating company,
too) must conduct the conformity assessment process for the superordinate machine or plant, issue the Declaration of Conformity for it and affix the
CE-mark.
We
Busch Produktions GmbH
Schauinslandstr. 1
9689 Maulburg
Germany
Declare that the vacuum pumps MI 1502 BP
with a serial number from D1701… to D1852…
has (have) been manufactured in accordance with the European Directives:
•‘Machinery’ 2006 42 EC
•‘Electromagnetic Compatibility’ 2014 30 EU
•‘RoHS’ 2011 65 EU, restriction of the use of certain hazardous substances in electrical and electronic equipment
and following the standards.
Standard Title of the Standard
EN ISO 12100: 2010 Safety of machinery –General principles for design –Risk assessment and risk reduction
EN ISO 13857: 2008 Safety of machinery - Safety distances to prevent hazard zones being reached by the upper and lower limbs
EN 1012-1: 2010
EN 1012-2: 1996 + A1: 2009 Compressors and vacuum pumps - Safety requirements - Part 1 and Part 2
EN ISO 2151: 2008 Acoustics - Noise test code for compressors and vacuum pumps - Engineering method (grade 2)
EN 60204-1: 2006 Safety of machinery - Electrical equipment of machines - Part 1: General requirements
EN 61000-6-2: 2005 Electromagnetic compatibility (EMC) - Generic immunity standards. Immunity for industrial environments
EN 61000-6-4: 2007 + A1: 2011 Electromagnetic compatibility (EMC) - Generic immunity standards. Emission standard for industrial
environments
EN ISO 13849-1:2015 (1) Safety of machinery - Safety-related parts of control systems - Part 1: General principles for design
Manufacturer
Dr.-Ing. Karl Busch
General Director
Person authorized to compile
the technical file
Andrej Riwe
Technical writer
Maulburg, 04.04.2016

Technichal Data
For motor connection parameters see nameplate
Type
Frequency
[Hz]
Ultimate working pressure*
[bar g]
Nominal motor rating
[kW]
Nominal speed
[min-1]
Volume flow
[m³/h]
Sound pressure level
(DIN EN ISO 2151) with
silencer [db(A)]
Weight
[kg]
Ambient temperature [°C]
Ambient pressure
Synchronising gear
oil qty [l]
Synchronising gear
oil filled ex-works
MI 1502 BP
50
0.8 15
3000 500 86 ~390
0 ... 40
atmospheric
0.6
Busch VS 150
1.2 18.5
1.6 22
2.0 30
60
0.8 18.5
3600 580 87 ~3901.2 22
1.6 30
*valid ultimate working pressure see nameplate
MI 1502 BP Technichal Data
0870152627 / 101117 page 15

Busch – All over the World in Industry
page 16
Busch – All over the World in Industry www.busch-vacuum.com
Argentina
Busch Argentina S.R.L.
Santo Domingo 3076
C1293AGN-Capital Federal
Buenos Aires
Tel: [phone]
Fax: [phone]
e-mail: [email protected]
Australia
Busch Australia Pty. Ltd.
30 Lakeside Drive
Broadmeadows, Vic. 3047
Tel: [phone]
Fax: [phone]
e-mail: [email protected]
Austria
Busch Austria GmbH
Industriepark Nord
2100 Korneuburg
Tel: +43 2262 / 756 65-0
Fax: +43 2262 / 756 65-20
e-mail: [email protected]
Belgium
Busch N.V.
Kruinstraat 7
9160 Lokeren
Tel: +32 9 / 348 47 22
Fax: +32 9 / 348 65 35
e-mail: [email protected]
Brazil
Busch do Brasil Ltda.
Rod. Edgard Máximo Zambotto, Km 64
13240-000 Jarinu-SP
Tel: [phone]/5277
Fax: [phone]
e-mail: [email protected]
Canada
Busch Vacuum Technics Inc.
1740, Lionel Bertrand
Boisbriand, Québec J7H 1N7
Tel: [phone]
Fax: [phone]
e-mail: [email protected]
Chile
Busch Chile S. A.
Calle El Roble N° 375-G
Lampa - Santiago
Tel: [phone]
Fax: [phone]
e-mail: [email protected]
China
Busch Vacuum (Shanghai) Co., Ltd
No.5, Lane 195 Xipu Road
Songjiang Industrial Estate East New Zone
Shanghai 201611 PRC
Tel: [phone]
Fax: [phone]
e-mail: [email protected]
Czech Republic
Busch Vakuum s.r.o.
Praákova 10
619 00 Brno-Horní Heršpice
Tel: [phone]
Fax: [phone]
e-mail: [email protected]
Denmark
Busch Vakuumteknik A/S
Parallelvej 11
8680 Ry
Tel: [phone]
Fax: [phone]
e-mail: [email protected]
Finland
Busch Vakuumteknik Oy
Sinikellontie 4
01300 Vantaa
Tel: [phone]
Fax: [phone]
e-mail: [email protected]
France
Busch France S.A.S.
16, Rue du Bois Chaland
91090 Lisses
Tel: [phone]
Fax: [phone]
e-mail: [email protected]
Germany
Dr.-Ing. K. Busch GmbH
Schauinslandstr. 1
79689 Maulburg
Tel: [phone]
Fax: [phone]
e-mail: [email protected]
Dr.-Ing. K. Busch GmbH
Niederlassung Nord
Ernst-Abbe-Str. 1-3
25451 Quickborn
Tel: [phone]
Fax: [phone]
Dr.-Ing. K. Busch GmbH
Niederlassung West
Nordring 35
64807 Dieburg
Tel: [phone]
Fax: [phone]
Dr.-Ing. K. Busch GmbH
Außenstelle Neuenrade
Breslauer Str. 36
58809 Neuenrade
Tel: [phone]
Fax: [phone]
Dr.-Ing. K. Busch GmbH
Niederlassung Süd-Ost
Gewerbestraße 3
90579 Langenzenn
Tel: [phone]
Fax: [phone]
Dr.-Ing. K. Busch GmbH
Außenstelle Zella-Mehlis
Am Rain 11
98544 Zella-Mehlis
Tel: [phone]
Fax: [phone]
Dr.-Ing. K. Busch GmbH
Außenstelle Meitingen-Ostendorf
Grüntenweg 8
86405 Meitingen-Ostendorf
Tel: [phone]
Fax: [phone]
Hungary
Busch Vacuum Kft.
Bentonit u. 8
1225 Budapest
Tel: [phone]
Fax: [phone]
e-mail: [email protected]
India
Busch Vacuum India Pvt Ltd.
Plot No. 110, Sector 7
PCNTDA, Bhosari
Pune 411026
Tel: [phone]
Fax: [phone]
e-mail: [email protected]
Ireland
Busch Ireland Ltd.
A10-11 Howth Junction Business Centre
Kilbarrack, Dublin 5
Tel: [phone]
Fax: [phone]
e-mail: [email protected]
Israel
Busch Israel Ltd.
1 Mevo Sivan Street
Qiryat Gat 82022, Israel
Tel: [phone]
Fax [phone]
e-mail: [email protected]
Italy
Busch Italia S.r.l.
Via Ettore Majorana, 16
20054 Nova Milanese
Tel: [phone]
Fax: [phone]
e-mail: [email protected]
Japan
Nippon Busch K.K.
1-23-33, Megumigaoka
Hiratsuka City, Kanagawa
Japan 259-1220
Tel: [phone]
Fax: [phone]
e-mail: [email protected]
Korea
Busch Korea Ltd.
248-2, Ichi-ri, Majang-Myun,
Icheon-si, Kyunggi-Do
Tel: [phone]
Fax: [phone]
e-mail: [email protected]
Malaysia
Busch Malaysia Sdn Bhd.
4&6, Jalan Taboh 33/22, Seksyen 33
Shah Alam Technology Park
40400 Shah Alam
Selangor Darul Ehsan
Tel: [phone]
Fax [phone]
e-mail: [email protected]
Mexico
Busch Vacuum Mexico S. de R.L. de C.V.
Tlaquepaque 4865, Los Altos
Monterrey, Nuevo Leon
Mexico 64370
Tel: [phone]
Fax: [phone]
e-mail: [email protected]
Netherlands
Busch B.V.
Pompmolenlaan 2
3447 GK Woerden
Tel: [phone]
Fax: [phone]
e-mail: [email protected]
New Zealand
Busch New Zealand Ltd.
Unit D, 41 Arrenway Drive
Albany, Auckland 1330
Tel: [phone]
Fax: [phone]
e-mail: [email protected]
Norway
Busch Vakuumteknikk AS
Hestehagen 2
1440 Drøbak
Tel: [phone]
Fax: [phone]
e-mail: [email protected]
Poland
Busch Polska Sp. z o.o.
Ul. Chopina 27
87-800 W»oc»awek
Tel: [phone]
Fax: [phone]
e-mail: [email protected]
Portugal
Busch lbérica S.A., Sucursal em Portugal
Zona Industrial Norte,
Fracção B, Armazém 2
3750-753 Raso de Travassô - Agueda
Aveiro, Portugal
Tel: [phone]
Fax: [phone]
e-mail: [email protected]
Russia
Busch Vacuum Russia OOO
Kotlyakovskaya str., 6/9
115201 Moscow
Tel: [phone]
Fax: [phone]
e-mail: [email protected]
Singapore
Busch Vacuum Singapore Pte Ltd
20 Shaw Road
Unit 01-03 Ching Shine Building
Singapore 367956
Tel: [phone]
Fax: [phone]
e-mail: [email protected]
South Africa
Busch Vacuum South Africa (Pty) Ltd.
Denver
Johannesburg
Tel: [phone]
Fax: [phone]
e-mail: [email protected]
Spain
Busch Ibérica S.A.
Pol. Ind. Coll de la Manya
C/ Jaume Ferran, 6-8
08403 Granollers
Tel: [phone]
Fax: [phone]
e-mail: [email protected]
Sweden
Busch Vakuumteknik AB
Bråta Industriområde
435 33 Mölnlycke
Tel: [phone]
Fax: [phone]
e-mail: [email protected]
Switzerland
Busch AG
Waldweg 22
4312 Magden
Tel: +41 61 / 845 90 90
Fax: +41 61 / 845 90 99
e-mail: [email protected]
Taiwan
Busch Taiwan Corporation
1F. No. 69, Sec. 3, Beishen Road
Shenkeng Township,
Taipei County 222
Tel: [phone]
Fax: [phone]
e-mail: [email protected]
Thailand
Busch Vacuum (Thailand) Co., Ltd.
888/30 Moo19, Soi Yingcharoen,
Bangplee-Tamru Road,
Bangpleeyai, Bangplee,
Samutprakarn 10540
Tel: [phone]
Fax: [phone]
e-mail: [email protected]
Turkey
VAKUTEK
Emlak Kredi Ishani No: 179
34672 Üsküdar-Istanbul
Tel: [phone]
Fax: [phone]
e-mail: [email protected]
United Kingdom
Busch (UK) Ltd
Hortonwood 30
Telford Shropshire TF1 7YB
Tel: [phone]
Fax: [phone]
e-mail: [email protected]
USA
Busch LLC
516-B Viking Drive
Virginia Beach, VA 23452
Tel: [phone]
Fax: [phone]
e-mail: [email protected]
0870152627