Table of Contents Table of Contents Safety ..................................Product Description ............................. Operating Principle ............................. Intended Use ............................... Start Controls............................... Standard Accessories............................2.4.1 Temperature Switch "Gas" ........................Optional Accessories............................2.5.1 Gas Ballast Valve........................... 2.5.2 Inlet Filter .............................. 2.5.3 Temperature Switch "Oil" ........................2.5.4 Resistance Thermometer “Oil”......................
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Table of Contents Technical Data ..............................Oil ................................... EU Declaration of Conformity ..........................UK Declaration of Conformity..........................Instruction Manual R5 RA 0520 A_EN_en 3 | 40...
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.
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 rep- resentative in order to take specific precautions.
The machine can optionally be equipped with a Variable Speed Drive (VSD). A variable speed drive in- creases the pumping speed of the machine and saves energy. For more information contact your Busch representative. Instruction Manual R5 RA 0520 A_EN_en...
3 | Transport 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.
Storage | 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, in a dry and dust free environment and if possible, in original pack- aging, preferably at temperatures between 0 ...
5 | Installation Installation Installation Conditions NOTICE Use of the machine outside of the permitted installation conditions. Risk of premature failure! Loss of efficiency! ● Make sure that the installation conditions are fully respected. Description Min. 70 cm ~10 cm ~50 cm ~50 cm ●...
● 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.
– 3” NPT If the machine is used as part of a vacuum system: ● Busch recommends the installation of an isolation valve in order to prevent the oil from flow- ing back to the vacuum system. ● Make sure that the connection lines cause no stress on the connections of the machine. There- fore, we recommend installing flexible joints on the suction and discharge connections.
● If the machine is equipped with a power connector, install a residual current protective device to protect persons in case of a defective insulation. ● Busch recommends installing a type B residual protective device suitable for the electrical in- stallation.
● If the machine is equipped with a power connector, install a residual current protective device to protect persons in case of a defective insulation. ● Busch recommends installing a type B residual protective device suitable for the electrical in- stallation.
● If the machine is equipped with a power connector, install a residual current protective device to protect persons in case of a defective insulation. ● Busch recommends installing a type B residual protective device suitable for the electrical in- stallation.
Electrical Connection | 6 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. ●...
The electrical connection of the monitoring devices fitted as standard on the machine (not op- tional) is mandatory to ensure the safety of the machine and the users. NOTE To prevent potential nuisance alarms, Busch recommends that the control system is config- ured with a time delay of at least 20 seconds. 6.5.1 Wiring Diagram Temperature Switch "Gas"...
Commissioning | 7 Commissioning 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 people are present in the vicinity of a machine that is not insulated from noise for extended peri- ods of time: ●...
● Make sure to wear hearing protection. Water vapor within the gas flow is tolerated within certain limits. The conveyance of other vapors shall be agreed upon with Busch. If condensable vapors are to be conveyed: START ●...
Risk of injuries! Risk of premature failure and loss of efficiency! ● Maintenance work must only be executed by qualified personnel. ● Respect the maintenance intervals or ask your Busch representative for service. NOTICE Using inappropriate cleaners. Risk of removing safety stickers and protective paint! ●...
● Clean the gas ballast valve (GB). ● Contact Busch for an inspection. Every 5 years If required, overhaul the machine. * Service interval for synthetic oil, shorten the interval when using mineral oil, contact Busch Service 24 | 40 Instruction Manual R5 RA 0520 A_EN_en...
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. Description 1x O-ring, see "Service kit" (chapter Spare Parts) Instruction Manual R5 RA 0520 A_EN_en...
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Remove the used oil filter with an oil fil- 1x oil filter (OF), see "Service kit" (chap- ter wrench ter Spare Parts - Busch genuine spare part) For oil type and oil capacity see Technical Data and Oil [➔ 35]. Description 1x O-ring, see "Service kit"...
8 | Maintenance Air Heat Exchanger Cleaning ● Make sure that the machine is oil drained before cleaning the air heat exchanger (see Oil and Oil Filter Change [➔ 25]). ● Run the machine without oil and at atmospheric pressure for a maximum of 1 minute to drain the radiator.
● Decontaminate the machine as much as possible and state the contamination status in a ‘Dec- laration 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).
10 | Decommissioning Decommissioning DANGER Live wires. Risk of electrical shock. ● Electrical installation work must only be executed by qualified personnel. CAUTION Hot surface. Risk of burns! ● Before doing anything that requires touching the machine, let it cool down first. ●...
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 parts kit Description Part no.
12 | Troubleshooting Troubleshooting DANGER Live wires. Risk of electrical shock. ● Electrical installation work must only be executed by qualified personnel. DANGER Live wires. Carry out any work on the variable speed drive and motor. Risk of electrical shock! ●...
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Oil level too high. ● Drain the oil overfill to cor- rect the oil level. For resolution of problems not listed in the troubleshooting table, please contact your Busch repre- sentative. Instruction Manual R5 RA 0520 A_EN_en 33 | 40...
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13 | Technical Data Technical Data RA 0520 A Nominal pumping speed m³/h 430 / 520 (50Hz / 60Hz) ACFM 254 / 306 Ultimate pressure hPa (mbar) abs. (without gas ballast valve) TORR 0.075 Ultimate pressure hPa (mbar) abs. (with gas ballast valve) TORR 0.375 Nominal motor speed...
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Oil temperature [°C] In case of unfavorable ambient temperature, other oil viscosities may be used. Please consult your Busch representative for more details. To know which oil has been filled in the machine, please refer to the nameplate (NP). Oil suitability ●...
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EU Declaration of Conformity This Declaration of Conformity and the CE-markings affixed to the nameplate are valid for the machine within the Busch scope of delivery. This Decla- ration of Conformity is issued under the sole responsibility of the manufacturer.
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UK Declaration of Conformity This Declaration of Conformity and the UKCA-markings affixed to the nameplate are valid for the machine within the Busch scope of delivery. This Dec- laration of Conformity is issued under the sole responsibility of the manufacturer.
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UK Declaration of ConformityNotes Notes 38 | 40 Instruction Manual R5 RA 0520 A_EN_en...
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N otes Instruction Manual R5 RA 0520 A_EN_en 39 | 40...
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