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Summary of Contents for Atlas Copco GVD 28
- Page 1 Atlas Copco Oil-sealed dual stage rotary vane vacuum pumps GVD 28 Instruction Book 6996 0221 50 Issue C...
- Page 2 EU DECLARATION OF CONFORMITY We, Atlas Copco Airpower n.v., declare under our sole responsibility, that the product Machine name VACUUM PUMP Machine type GVD0.7, GVD1.5, GVD3, GVD5, GVD8, GVD12, GVD18, GVD28 Serial number This declaration covers all product serial numbers from the date this Declaration was signed onwards.
- Page 3 Atlas Copco Oil-sealed dual stage rotary vane vacuum pumps GVD 28 Instruction book Original instructions Copyright notice Any unauthorised use or copying of the contents or any part thereof is prohibited. This applies in particular to trademarks, model denominations, part numbers and drawings.
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Page 4: Table Of Contents
Instruction Book Table of Contents Introduction ........................6 Scope and definitions ....................6 Description ........................8 Gas-ballast ........................8 Technical data ......................9 Operating and storage conditions .................. 9 Performance ........................ 10 Mechanical data ......................11 Lubrication data ......................11 Electrical data ...................... - Page 5 Instruction Book Gas-ballast control ....................... 23 Start-up ........................23 To achieve ultimate vacuum ..................24 To pump condensable vapours ................... 25 To decontaminate the oil ..................... 25 Unattended operation ....................25 Shut-down ........................26 Maintenance ....................... 27 Safety information ......................27 Maintenance plan ......................
- Page 6 Service ......................... 36 Spares ......................... 36 Accessories ......................... 37 Illustrations The GVD 28 pump ......................7 Dimensions (mm) ......................13 Motor voltage selection: single-phase motors, 110/200-240 V 50 Hz and 115-120/200-230 V 60 Hz ..........18 Remove/replace the inlet filter ..................30 Remove/replace the gas-ballast filter ................
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Page 7: Publication Number
Instruction Book Tables Operating and storage conditions .................. 9 Performance data ......................10 Mechanical data ......................11 Lubrication data ......................11 Electrical data: three-phase motors ................12 Electrical data: single-phase motors ................12 Checklist of items ......................15 Motor connection details ....................17 Maintenance plan ...................... - Page 8 Instruction Book This page has been intentionally left blank. 6996 0221 50 Issue C...
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Page 9: Introduction
Scope and definitions This manual provides installation, operation and maintenance instructions for the Atlas Copco GVD 28 rotary vacuum pumps. The pump must be used as specified in this manual. Read this manual before installing and operating the pump. Important safety information is highlighted as WARNING and CAUTION instructions that must be followed. -
Page 10: The Gvd 28 Pump
Instruction Book Figure 1 – The GVD 28 pump Reference Designation Reference Designation Oil filler Motor terminal box Outlet nozzle On/Off switch Gas-ballast control (10) Box section skids Gas-ballast inlet (11) Oil drain-plug (gravity drain) Centring-ring and O-ring (12) Oil sight-glass... -
Page 11: Description
The GVD 28 pump is a two-stage, direct drive, sliding vane pump. The pump is oil-sealed and designed for reliable, long-term operation in both laboratory and industrial environments. The pump is a free-standing unit. The drive is provided through a flexible coupling by a single-phase or three-phase (four pole) motor. -
Page 12: Technical Data
Instruction Book Technical data Operating and storage conditions NOTE To comply with EN 61010 and CSA standards, the pump must be installed and used indoors, and within the operating conditions specified in Table 1 below. Table 1 – Operating and storage conditions Parameter Data Ambient temperature range (operation) -
Page 13: Performance
Instruction Book Performance NOTE Where total pressures are shown in Table 2, measurements were taken using an untrapped total pressure capacitance diaphragm gauge on a header, as specified by Pneurop standards. Table 2 – Performance data Parameter Data Maximum displacement 50 Hz electrical supply 32.2 m 60 Hz electrical supply... -
Page 14: Mechanical Data
Instruction Book Mechanical data Table 3 – Mechanical data Parameter Data Approximate pump mass 46 kg Dimensions Refer to Figure 2 Degree of protection Single-phase motors IP44 Three-phase motors IP54 Pump inlet port DN25 ISO-KF (the flange can be removed from the G1 threaded hole) Pump outlet port 15 mm external diameter nozzle (the nozzle can be removed... -
Page 15: Electrical Data
Instruction Book Electrical data Refer to Table 5 and 6. For motor current information please refer to the motor rating plate. The motor start-up current is drawn for less than one second, so use slow-blow fuses to prevent unnecessary fuse failure when the pump starts. Fuses should be to EN60269 Section 2.2. -
Page 16: Dimensions (Mm)
Instruction Book Figure 2 – Dimensions (mm) Pump GVD 28 1PH GVD 28 3PH 6996 0221 50 Issue C... -
Page 17: Installation
25%, there is a risk of fire or explosion in the oil-box of the pump. WARNING Do not use the GVD 28 pump to pump hazardous substances. WARNING Obey the safety instructions listed below and take note of appropriate precautions. -
Page 18: System Design
Section 6.1. Table 7 – Checklist of items Quantity Description Check () GVD 28 rotary vacuum pump Fitting pack containing the following: DN25 ISO-KF centring-ring O-ring for centring-ring 6996 0221 50 Issue C... -
Page 19: Locate The Pump
Instruction Book Locate the pump WARNING Use suitable lifting equipment to move the pump. Failure to use suitable lifting equipment can result in injury to people or damage to the pump. Refer to Section 2.3 for the mass of the pump. The pump can be either free-standing on its box section skids, or be fixed by bolts through the four fixing holes in the box section skids, or be used with vibration isolators. -
Page 20: Motor Connection Details
Ensure that the electrical supply voltage corresponds with the voltage specified on the motor data plate. Atlas Copco recommends that connecting the electrical supply to the motor through a starter or circuit breaker that has thermal over-current protection and can be adjusted to suit the full-load current ratings shown on the motor rating plate. -
Page 21: Motor Voltage Selection: Single-Phase Motors, 110/200-240 V 50 Hz And 115-120/200-230 V 60 Hz
Instruction Book Figure 3 – Motor voltage selection: single-phase motors, 110/200-240 V 50 Hz and 115-120/200-230 V 60 Hz Reference Designation Reference Designation Top view of motor Terminal box cover Internal view of top of motor Electrical inlet socket On/off switch On/Off switch Voltage selector switch Position 'I' (on) -
Page 22: Electrical Installation: Three-Phase Motors
If automatic pump restart is not desired, use electrical control equipment which must be reset manually. Atlas Copco recommends connecting the electrical supply to the motor through a starter or circuit breaker that has thermal over-current protection and can be adjusted to suit the full-load current ratings shown on the motor rating plate. -
Page 23: Connect The Pump Inlet
Instruction Book 5. Tighten the dome shaped nut on the cable gland until the outer sheath of the cable is firmly gripped. Using a tool, tighten to a torque of 2.5 Nm. Do not overtighten. 6. Ensure that the gasket seal for the terminal box cover is correctly positioned, then refit the cover to the terminal-box and secure with the screws. -
Page 24: Connect The Pump Outlet
0.5 bar gauge (1.5 bar absolute, 1.5 x 10 Pa) at full pump throughput. Atlas Copco recommends fitting an oil mist filter to the pump outlet in the following circumstances: If using the pump with the gas-ballast control open. -
Page 25: Gas-Ballast Inlet Connection
Instruction Book 3.10 Gas-ballast inlet connection The position of the gas-ballast inlet is shown in Figure 1 (item 4). The gas-ballast inlet has several filters (shown in Figure 5) to trap any dust and debris if using air as the gas-ballast supply. -
Page 26: Operation
Turn the gas-ballast control by up to two turns anti-clockwise to introduce an additional oil-feed to the pump mechanism. Atlas Copco recommend doing this when pumping high throughputs of dry gases. Turn the gas-ballast control six turns anti-clockwise to open it fully. Use the gas-ballast control open: To pump high concentrations of condensable vapour. -
Page 27: To Achieve Ultimate Vacuum
Section 2.2, make sure that this is not due to the system design before contacting the supplier or Atlas Copco for advice, In particular, the vapour pressure of all materials used in the vacuum system (including pump oil, refer to below) must be much lower than the specified ultimate vacuum of the pump. -
Page 28: To Pump Condensable Vapours
The pump is designed for unattended operation under the normal operating conditions specified Section 2.1. However, Atlas Copco recommends checking the pump at a regular interval of not more than 14 days. Check the pump more frequently if pumping high volumes of gas or if operating the pump with the gas-ballast control open. -
Page 29: Shut-Down
To prevent this, use a gas-ballast control valve. Atlas Copco recommends, as described in the procedure below, decontaminating the oil before shutting down the pump. This will prevent damage to the pump by the contaminates in the oil. -
Page 30: Maintenance
In these circumstances, Atlas Copco recommends that replacing the pump seals every year. If necessary, adjust the maintenance plan according to experience. When maintaining the pump, use Atlas Copco spares and maintenance kits; these contain all of the components necessary to complete maintenance operations successfully. The Item Numbers... -
Page 31: Check The Oil-Level
Instruction Book of the spares and kits are given in Section 7.3. Examine the condition of any external accessories, filters or traps (if fitted) when maintaining the pump. Refer to the instructions supplied with these accessories for the necessary maintenance procedures. Table 9 –... - Page 32 Instruction Book 1. Operate the pump for approximately ten minutes to warm the oil, then switch off the pump. (This lowers the viscosity of the oil and allows the oil to be drained from the pump more easily.) 2. Isolate the pump from the electrical supply and disconnect it from the vacuum system. 3.
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Page 33: Inspect And Clean The Inlet-Filter
Instruction Book Inspect and clean the inlet-filter Refer to Figure 1. Unscrew the inlet adaptor (1) and remove the O-ring (2), circlip (3) and inlet-filter (4). 2. Wash the filter in a suitable cleaning solution. Allow the filter to dry. 3. -
Page 34: Clean The Gas-Ballast Filter
Instruction Book Clean the gas-ballast filter NOTE The gas-ballast filter may have been removed to connect a gas supply or valve to the gas-ballast inlet. Refer to Figure 1. Remove the retainer circlip (3). 2. Remove the protective wire meshes (2) and filter elements (1). 3. -
Page 35: Clean And Overhaul The Pump
Replace the run capacitor as described in the instructions supplied with the capacitor kit. Test the earth (ground) continuity and the insulation resistance of the pump-motor, in accordance with local regulations for periodic testing of electrical equipment. Atlas Copco recommends that: The earth (ground) continuity is less than 0.1 ... - Page 36 Instruction Book The oil is too viscous. The oil is contaminated. The pump is seized after long storage, or has been left to stand after pumping contaminants. The motor is faulty. 5.11.3 The pump failed to achieve specified performance (failure to reach ultimate vacuum) The measuring technique or gauge is unsuitable.
- Page 37 Instruction Book 5.11.5 The pump surface temperature is above 100°C The ambient temperature is too high. The cooling-air supply is insufficient or is too hot. The cooling-air supply is blocked. The electrical supply voltage is too high. ...
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Page 38: Storage And Disposal
Instruction Book Storage and disposal Storage CAUTION Observe the storage temperature limits stated in Section 2.1. Storage below these limits will permanently damage the pump seals. NOTE If storing a new pump in conditions of high humidity, remove the pump from its cardboard packaging box;... -
Page 39: Service, Spares And Accessories
Atlas Copco products, spares and accessories are available from Atlas Copco Customer Centres and a world-wide network of distributors. Order spare parts and accessories from the nearest Atlas Copco Customer Centre or distributor. When ordering, state for each part required: Model and Item Number of the equipment ... -
Page 40: Accessories
Instruction Book Accessories 7.4.1 Introduction A range of accessories is available for the GVD 28 pumps. The accessories are briefly described in the following sections. Refer to Table 10 for the Item Numbers of these accessories. Table 10 – Accessory item numbers... - Page 41 Instruction Book 6996 0221 50 Issue C...
- Page 42 This page has been intentionally left blank.
- Page 43 We make performance stand the test of time. This is what we call - Sustainable Productivity. Atlas Copco AB (publ) SE-105 23 Stockholm, Sweden Phone: +46 8 743 80 00 Reg. no: 556014-2720 www.atlascopco.com...
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