BUSCH PANDA WZ 0250 B User manual

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PANDA
Vacuum Boosters
WZ 0250 B, WZ 0500 B
Instruction Manual
0870565695 | A0006_en-US | Original instructions 6/20/2022

Table of Contents
2 | 36 Instruction Manual PANDA WZ 0250-0500 B_EN_en
Table of Contents
1 Safety..................................................................................................................................................................... 3
2 Product Description............................................................................................................................................. 4
2.1 Operating Principle ............................................................................................................................................. 5
2.2 Intended Use ....................................................................................................................................................... 5
2.3 Standard Features............................................................................................................................................... 6
2.3.1 Water Cooling........................................................................................................................................ 6
2.3.2 Temperature Switch ............................................................................................................................. 6
3 Transport .............................................................................................................................................................. 7
4 Storage .................................................................................................................................................................. 8
5 Installation ........................................................................................................................................................... 9
5.1 Installation Conditions........................................................................................................................................ 9
5.2 Connecting Lines / Pipes .................................................................................................................................... 9
5.2.1 Gas Flow Variants.................................................................................................................................. 10
5.2.2 Suction Connection............................................................................................................................... 10
5.2.3 Discharge Connection .......................................................................................................................... 10
5.2.4 Cooling Water Connection................................................................................................................... 11
5.3 Filling Oil............................................................................................................................................................... 11
6 Electrical Connection........................................................................................................................................... 14
6.1 Machine delivered without Control Box or Variable Speed Drive (VSD)....................................................... 14
6.2 Wiring Diagram Three-Phase Motor................................................................................................................. 15
6.3 Electrical Connection of the Monitoring Devices ............................................................................................ 16
6.3.1 Wiring Diagram Temperature Switch................................................................................................. 16
7 Commissioning..................................................................................................................................................... 17
7.1 Compression Chamber Flushing....................................................................................................................... 17
8 Maintenance......................................................................................................................................................... 19
8.1 Maintenance Schedule ....................................................................................................................................... 20
8.1.1 With "YLC 250 B" Oil.............................................................................................................................. 20
8.1.2 With "VSC 100" Oil................................................................................................................................. 20
8.2 Oil Level Inspection............................................................................................................................................. 20
8.3 Oil Color Inspection ............................................................................................................................................ 21
8.4 Oil Change............................................................................................................................................................ 21
9 Overhaul................................................................................................................................................................ 25
10 Decommissioning................................................................................................................................................. 26
10.1 Dismantling and Disposal .................................................................................................................................. 26
11 Spare Parts............................................................................................................................................................ 27
12 Troubleshooting................................................................................................................................................... 28
13 Technical Data...................................................................................................................................................... 30
14 Oil........................................................................................................................................................................... 31
15 EU Declaration of Conformity............................................................................................................................. 32
16 UK Declaration of Conformity ............................................................................................................................ 33

Safety | 1
Instruction Manual PANDA WZ 0250-0500 B_EN_en 3 | 36
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, as described in the following chapters and in accordance
with the chapter Intended Use [➔5]. 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 | 36 Instruction Manual PANDA WZ 0250-0500 B_EN_en
2 Product Description
BPV
IN
OSG
CWO
ODP, MP
OFP
OSG
OUT
BGC
BGC
MTB
NP
OFP BPV
OFP
ODP,
MP
TS
CWI
OUT2
OFP
ODP,
MP
CWC
CWC CWC
Description
BGC Barrier gas connection BPV Bypass valve
CWC Cooling water connection CWI Cooling water inlet
CWO Cooling water outlet IN Suction connection
MP Magnetic plug MTB Motor terminal box
NP Nameplate ODP Oil drain plug
OFP Oil fill plug OSG Oil sight glass
OUT Discharge connection OUT2 Lateral discharge connection (Optional)
TS Temperature switch
NOTE
Technical term.
In this instruction manual, we consider that the term ‘machine’ refers to the ‘vacuum booster’.

Product Description | 2
Instruction Manual PANDA WZ 0250-0500 B_EN_en 5 | 36
NOTE
Illustrations
In this instruction manual the illustrations may differ from the machine appearance.
2.1 Operating Principle
The machine works on the Booster blower principle.
The two oil housings (on each side) allow the lubrication of the gears and bearings.
A bypass valve (BPV) limits automatically the differential pressure between inlet and outlet.
2.2 Intended Use
WARNING
In case of foreseeable misuse outside the intended use of the machine.
Risk of injuries!
Risk of damages to the machine!
Risk of damages to the environment!
●Make sure to follow all instructions described in this manual.
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 used in combination with a backing pump in vacuum system.
The machine is suitable for continuous operation.
Permitted environmental conditions, see Technical Data [➔30].

2 | Product Description
6 | 36 Instruction Manual PANDA WZ 0250-0500 B_EN_en
NOTICE
Chemical compatibility of the process gases with the machine component materials.
Risk of corrosion inside the compression chamber which can reduce performance and its
lifetime!
●Check if the process gases are compatible with those following materials:
- Cast iron
- Steel
- Aluminium
- Epoxy resin
- Fluoroelastomer (FKM/FPM)
●In doubt, please contact your Busch representative.
2.3 Standard Features
2.3.1 Water Cooling
The machine is driven by a water-cooled motor.
Depending on the working conditions, the cooling water can be connected to the covers (CWC).
2.3.2 Temperature Switch
The temperature switch monitors the oil temperature of the machine.
The machine must be stopped when the temperature switch trips (140 °C).

Transport | 3
Instruction Manual PANDA WZ 0250-0500 B_EN_en 7 | 36
3 Transport
WARNING
Suspended load.
Risk of severe injury!
●Do not walk, stand or work under suspended loads.
WARNING
Lifting the machine using the motor eye bolt.
Risk of severe injury!
●Do not lift the machine using the eye bolt fitted to the motor. Only lift the machine as shown.
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 ingress into
the cylinder.
●Drain the oil prior to every transport or always horizontally transport the machine.
●To find out the weight of the machine, refer to the chapter Technical Data [➔30] or the
nameplate (NP).
●Use appropriate slings.
●Check the machine for transport damage.
If the machine is secured to a base plate:
●Remove the machine from the base plate.

4 | Storage
8 | 36 Instruction Manual PANDA WZ 0250-0500 B_EN_en
4 Storage
●Seal all apertures with adhesive tape or reuse provided caps.
●Make sure that the cooling water has been completely removed, see Decommissioning [➔26].
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 -20 ... 55 °C.

Installation | 5
Instruction Manual PANDA WZ 0250-0500 B_EN_en 9 | 36
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.
●Make sure that the environment of the machine is not potentially explosive.
●Make sure that the ambient conditions comply with the Technical Data [➔30].
●Make sure to use a suitable backing pump, if necessary seek advice from your Busch
representative
●Make sure that the environmental conditions comply with the protection class of the motor and
the electrical elements.
●Make sure that the installation space or location is vented such that sufficient cooling of the
machine is provided.
●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.
●Make sure that the machine is secured either from the four feet or from the discharge flange.
●Check the oil level, see Oil Level Inspection [➔20].
●Make sure that all provided covers, guards, hoods, etc. are mounted.
●Make sure that the cooling water complies with the requirements, see Cooling Water Connection
[➔11].
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 | Installation
10 | 36 Instruction Manual PANDA WZ 0250-0500 B_EN_en
5.2.1 Gas Flow Variants
The machine can be installed in different ways:
12
Description
1 Vertical gas flow 2 Lateral discharge (Optional)
5.2.2 Suction Connection
WARNING
Unprotected suction connection.
Risk of severe injury!
●Do not put hand or fingers in the 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):
– DN100, DIN 28404 for WZ 0250, 0500 B
Depending on the specific configuration ordered, other connection dimensions may apply.
5.2.3 Discharge Connection
NOTICE
Discharge gas flow obstructed.
Risk of damage to the machine!
●Make sure that the discharged gas will flow without obstruction. Do not shut off or throttle the
discharge line or use it as a pressurized air source.