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 any- thing on the product.
2 | Product Description Product Description Suction connection Oil drain plug Discharge connection Cooling air inlet Oil fill plug (=Venting valve) Cooling air outlet Oil sight glass Flow control device Terminal box with temperature transmitter Nameplate NOTE Technical term. In this instruction manual, we consider that the term ‘machine’ refers to the ‘vacuum pump’.
(volume content greater than 21% and up to 100%). 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.
3 | Transport 2.4.2 Temperature Transmitter The temperature transmitter monitors the gas temperature of the machine. The gas temperature must not exceed the permitted trip signal temperature, see Tech- nical Data [► 19]. A Trip signal must be set, see Wiring Diagram Temperature Transmitter. 2.4.3 Flow Control Device The flow control device monitors the cooling air volume flow of the machine.
Storage | 4 Machine weight: see the technical data or the nameplate (NP) Use both eye bolts! • Check the machine for transport damage. If the machine is secured to a base plate: • Remove the machine from the base plate. Storage •...
Loss of efficiency! • Take care that the installation conditions are fully complied with. Other values may apply after Busch approval • Make sure that the environment of the machine is not potentially explosive. • Make sure that the ambient conditions comply with the Technical Data [► 19].
Installation | 5 • Contact your Busch representative, the motor should be derated or the ambient temperature limited. 5.2 Connecting Lines / Pipes WARNING Rotating Parts. Risk of severe injury! • Do not operate the machine without suction / discharge connection installed.
• Only use oil approved by Busch and suitable for oxygen application, see Oil [► 19]. At delivery, the machine is already filled with specific oil "Busch YLC 250 B" which is suitable for oxygen application. A lead seal is applied on the oil fill plug (OFP) and the oil drain plug (ODP) in order to prevent wrong material from being filled in.
Installation | 5 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. 5.4.1 Wiring Diagram Three-Phase Motor NOTICE Incorrect direction of rotation. Risk of damage to the machine! •...
6 | Commissioning Double star connection, multi-voltage Star connection, multi-voltage motor motor with 12 pins (low voltage): with 12 pins (high voltage): Delta connection, multi-voltage motor with 12 pins (middle voltage): Commissioning WARNING Lack of oxygen regulation knowledge. Risk of fire! •...
(Merkblatt M 034 Sauerstoff). WARNING Use of non-Busch genuine spare parts. Risk of fire! • Only use Busch spare parts approved by Busch and suitable for oxygen application. WARNING Machines contaminated with hazardous material. Risk of poisoning! Risk of infection! If the machine is contaminated with hazardous material: •...
• Vent the connected lines to atmospheric pressure. If necessary: • Disconnect all connections. • Make sure to have an authorisation from Busch to perform any maintenance tasks. 7.1 Maintenance Schedule The maintenance intervals depend very much on the individual operating conditions.
Maintenance | 7 The oil level should stay constant over the lifetime of the oil. If the level does fall, this indicates a leak and the machine requires repair. • Fill up if necessary, see Oil Filling [► 10]. 7.3 Cleaning from Dust and Dirt Remove the front cover 4 mm hex key and untie the rolled-up cable,...
• Decontaminate the machine as much as possible and state the contamination status in a ‘Declaration of Contamination’. Busch will only accept machines that come with a completely filled in and legally bind- ing signed ‘Declaration of Contamination’ (form downloadable from www.buschvacuum.com).
WARNING Use of non-Busch genuine spare parts. Risk of fire! • Only use Busch spare parts approved by Busch and suitable for oxygen application. If other parts are required: • Contact your Busch representative for the detailed spare parts list.
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• Replace the inlet filter tional) is partially clogged. cartridge. Internal parts are worn or • Repair the machine (con- damaged. tact Busch). The machine runs very Worn coupling (CPL). • Replace the coupling noisily. (CPL). Oil level too low.
14 EU Declaration of Conformity 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 manufac- turer.
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