Edwards EV20 User manual

A350-20-880 Issue C
Installation and Operating Instructions
EV20-630 Rotary Vane Vacuum Pumps
Oil lubricated, air-cooled
Item Description Item Number
EV20 dual frequency motor A35010940
EV40 dual frequency motor A35015940
EV70 dual frequency motor A35020940
EV100 dual frequency motor A35025940
EV160 dual frequency motor A35030940
EV200 200 V, 50/60 Hz A35035934
EV200 dual frequency motor A35035940
EV300 200 V, 50/60Hz A35040934
EV300 dual frequency motor A35040940
EV400 200 V, 50/60Hz A35045934
EV400 dual frequency motor A35045940
EV630 200 V, 50/60Hz A35050934
EV630 dual frequency motor A35050940

EV20-630 Rotary Vane Vacuum Pumps
Oil lubricated, air-cooled
June 2010 2 Issue C
The abbreviations used throughout this manual are detailed in the table below:
Abbreviation Description
DE Oil Filter Access Cover
FA Oil filter Element (Fine)
GA Oil filter Element (Coarse)
LA Pump Exhaust
MA Inspection Glass (High)
MI Inspection Glass (Low)
OA Drain Screw
OD Mist Filter Cover
OE Oil Filler Cap
OG Oil sight Glass
OL Oil Pipeline
SA Pump Inlet
Installation Instructions
To be used in conjunction with the operating instructions.
1 Install the pump on a sound level surface.
2 Use suitable lifting equipment to move the pump. Attach the lifting equipment to the lifting eyes provided on the pump.
3 Ensure the pump is installed for ease of maintenance, so that the filters, regulators and oil sight glass (if fitted) are accessible.
4 Ensure that the pump is sited in a position where adequate and suitable cooling air can circulate freely around the pump. Any restrictions in cooling air
can cause premature failure of the pump. If necessary suitable forced air-cooling must be installed to protect the pump.
5 When connecting pipe work, provide flexible connection pipes so that the minimum diameter of the pipes corresponds to the connection thread size.
6 When pipes exceed 2M in length, increase the diameter to the next size. Narrow diameter pipes cause loss of pressure and poor efficiency.
7 Non-return valves must be fitted if there is a danger of reverse rotation when stopping the pump, due to the length of connection pipes.
8 Adequate and suitable filtration must be fitted to the pump to ensure long and trouble free life.
9 Ensure that no foreign bodies i.e. metal swarf, dust etc. are allowed to enter the intake and outlet of the pump.
10 Please ensure that the correct grade of oil is in the pump before use. (see operating instructions).
11 Any electrical connections must be made by a qualified electrician and conform to local and national safety requirements.
12 An isolator and a suitable motor rated circuit breaker rated for the size of motor must be installed to protect the motor. The pump must not restart
automatically when electrical supply is restored. (Details of full load current can be found on the motor plate).
13 You must ensure that suitable emergency stop controls are used.

EV20-630 Rotary Vane Vacuum Pumps
Oil lubricated, air-cooled
Issue C 3 June 2010
14 Check the direction of rotation before use as a failure to run the pump in the correct direction can cause internal damage to the pump, invalidating the
warranty.
15 If the pump is connected to an exhaust line, the maximum pressure at the pump outlet must not exceed 200mbar G.
16 The maximum inlet pressure must not exceed 1.5 bar A permissible for continuous running of the pump.
17 A PT100 is fitted on pumps EV70 and above, up to and including EV630. (Alarm set at 110°C, Trip set at 130°C).
18 Any maintenance must be carried out by a suitably qualified technician.
19 Apply suitable thread sealant or PTFE tape where applicable.
20 Ensure that the pump is installed in a well-ventilated area.
DO NOT EXPOSE ANY PART OF THE HUMAN BODY TO VACUUM.
FAILURE TO FOLLOW THE ABOVE INSTRUCTIONS MAY INVALIDATE ANY WARRANTY CLAIM.
Order spares from your nearest Edwards company or distributor.
WARNING: DON’T THROTTLE OR BLOCK AIR DISCHARGE OR USE AS A COMPRESSED AIR OUTLET.

EV20-630 Rotary Vane Vacuum Pumps
Oil lubricated, air-cooled
June 2010 4 Issue C
Gas Ballast
The EV pumps are fitted with gas ballast valves. These are not depicted on the pump
diagrams in this manual. The gas-ballast valve allows you to control the introduction of gas-
ballast air when pumping high vapour loads. Gas-ballast is used to reduce condensation of
the vapour carried by the pumped gases. This system reduces oil contamination and pump
corrosion caused by vapour condensing into the oil.
Safety
You must ensure that the pump is suitable for your application. A suitably trained
technician must perform the installation of the pump. The technician must be
familiar with the safety procedures that relate to the pump oil and products
processed by the pumping system. Obey the safety instructions and take note of appropriate
precautions.
Wear the appropriate safety clothing when you come into contact with contaminated
components.
The pumps can be used to generate a vacuum and will generate high pump temperatures,
especially at the oil container:
- Install pumps/compressors in a position where hot surfaces cannot be touched
- Or protect the area around them
- Or install warning signs.
To prevent the pump heating up to values exceeding specifications it is absolutely necessary
to execute each individual step of the maintenance procedures.
Application
These pumps can be used to create a vacuum.
The specification is valid up to a height of 800 m above sea level.
The pumps cannot be used for pumping of toxic or flammable materials.
Ensure that only non hazardous atmospheric air is taken in.
Transport and storage
Store pump in a dry area. Prevent condensation caused by vapour.
Lift and transport the pump using suitable lifting equipment and techniques. Use the lifting
eyes provided on the pump.
Installation
It is recommended to install the pumps with easy access for maintenance.
Clearance between pumps and adjacent walls should be no less than 10 cm of free space in
order to ensure sufficient airflow for cooling.
Ambient temperatures must not exceed 45°C.
Please refer to the addendum sheet, which details further installation instructions.
Connection and installation
Ensure correct dimensions and clean pipelines (no weld spatter, chips or similar contamination).
The diameter of the pipelines should at least equal that of the threads. For pipeline lengths of
more than 2 m use the next larger line diameter. Keep connections free from oil, grease and
water or other contaminations.
Fill the pump with oil
Use vacuum pump oil Ultragrade 20.
Screw-off oil inlet cover and fill-in oil up to the maximum of the inspection glass MA.
Remove protective caps at LA and SA. Don’t connect to the pipelines yet.
See the table below for oil quantities:
Litre
EV20 0.5 0.13
EV40 1 0.26
EV70 2 0.53
EV100 2 0.53
EV160 7 1.85
EV200 7 1.85
EV300 7 1.85
EV400 15 3.96
EV630 15 3.96
Oil Capacity
Pump T ype
Motor connection
Ensure that the electrical installation of the pump conforms to your local and national safety
requirements as required by EN 60402 Pt1.
Connect motor based on connecting diagram (in terminal box). An experienced electrician
should carry out this work only. Check for connecting voltage, nominal current and frequency.
Install motor circuit breaker and set to nominal motor current. (For data see motor rating plate).
Briefly start motor and check rotation (arrow on casing). Exchange phases if rotation
is incorrect.
Avoid switching on more than 10 times per hour.
The pump must not automatically restart when power is restored.
Commissioning
Connect intake line at SA.
WARNING: DON’T THROTTLE OR BLOCK AIR DISCHARGE LA OR USE AS A
COMPRESSED AIR OUTLET.
Ensure the exhaust pipeline diameter is equal to or greater than the air discharge LA.

EV20-630 Rotary Vane Vacuum Pumps
Oil lubricated, air-cooled
Issue C 5 June 2010
Maintenance
Maintain pump regularly to achieve the best operating results. Maintenance intervals will
depend on the pumps use and ambient conditions.
Refer to the maintenance label on the pump, a typical example can be seen below.
Before commencing maintenance switch off electricity to reliably avoid
unintentional restarting. Dirty inlet filter or blocked air degrease elements will
reduce air intake capacity.
Fan cover, fan grill, cooling ribs and surfaces of the compressor have to be
cleaned to avoid overheating. Wear appropriate safety clothing.
Oil / Oil separation
Check oil level daily while the pump is switched off. The oil level must not sink below
inspection glass middle MI.
Replace the oil:
- after first 100 hrs of operation.
- at least once every 6 months or 2000 hrs of operation whichever is greatest.
- or if too much water is taken in.
The old oil is to be drained at drainage screw OA while pump is switched off but
still at operating temperature.
Check air degrease element FA when exchanging oil and replace if blocked. Insert with seam
pointing downwards.
The filter cartridges are inserted behind the enclosure cover GD and are to be
cleaned depending on the dust level. Loosen cover DE.
(EV160/300/400/630 Only) Check coarse material separator and wash out if contaminated:
Loosen oil container cover OD and oil pipeline OL.

EV20-630 Rotary Vane Vacuum Pumps
Oil lubricated, air-cooled
June 2010 6 Issue C
Spare parts
The following spares kits are available from Edwards. When ordering your spares kit it is
important to select the one that is appropriate for the age of your pump. This can be achieved
by reading the index number at the beginning of the pump serial number, this will be, A, B, C,
D, E, F or G.
Pump
Description
Index
Part N umber
Filter Kit
A-B
A35010800
A
A35010820
B
A35010821
A
A35010810
B
A35010811
0-A
A35015800
None
A35015800
A
A35015821
None
A35015820
A
A35015811
None
A35015810
Filter Kit
D-G
A35020801
F
A35020822
G
A35020823
D-F
A35020811
G
A35020812
Filter Kit
DEFG
A35025801
F
A35025822
G
A35025823
DEF
A35025811
G
A35025812
Filter Kit
F
A35030802
Overhaul Kit
F
A35030822
Service Kit
F
A35030812
Filter Kit
E-F
A35035801
Overhaul Kit
F
A35035822
Service Kit
F
A35035812
Filter Kit
E-F
A35040801
Overhaul Kit
F
A35040822
Service Kit
F
A35040812
Filter Kit
A-D
A35045800
Overhaul Kit
D
A35045821
Service Kit
A-D
A35045810
Filter Kit
C-D
A35050800
Overhaul Kit
C-D
A35050820
Service Kit
C-D
A35050810
Overhaul Kit
EV200
EV100 Overhaul Kit
EV160
EV20
Service Kit
Service Kit
EV40 Overhaul Kit
Service Kit
Filter Kit
EV400
EV630
EV300
Overhaul Kit
Service Kit
EV70
Disposal
Dispose of the pump and any components removed from it safely in accordance with all local
and national safety and environmental requirements.
You must take particular care with components and waste oil, which have been contaminated
with dangerous process substances. Do not incinerate Fluoroelastomer seals and ‘o’rings.
Accessories
The following accessories are available:
A350 10 310 Inlet filter kit EV20
A350 15 310 Inlet filter kit EV40
A350 25 310 Inlet filter kit EV70 & EV100
A350 30 310 Inlet filter kit EV160, EV200 & EV300
A350 45 310 Inlet filter kit EV400 & EV630
A350 10 700 Inlet filter element EV20
A350 15 700 Inlet filter element EV40
A350 25 700 Inlet filter element EV70 & EV100
A350 30 700 Inlet filter element EV160, EV200 & EV300
A350 45 700 Inlet filter element EV400 & EV630
A350 10 300 Oil level switch EV20 & EV40
A350 20 300 Oil level switch EV70, EV100, EV160, EV200, EV300, EV400 & EV630
Install inlet filter in such a way that the filter cartridge is horizontal, thus no dirt will get into the
pump during maintenance work.
Clean filter cartridges according to the amount of dust in the environment. Wearing
the appropriate safety clothing, use pressurized air to blow through the filter from
inside out. Washout filter on the inside or use vacuum. Make certain that blocked, oily or greasy
cartridges are exchanged against new ones.
Set vacuum control valve to operational value.
Oil level switch: Check function during oil exchange;
Gas ballast valve: Exchange contaminated valve.

EV20-630 Rotary Vane Vacuum Pumps
Oil lubricated, air-cooled
Issue C 7 June 2010
EV20
Pipework up to 10m 3/4”
Width of vanes, min. [mm] 15
Air flow at 50/60 Hz [m3/h] 18,5/22
Length [mm]/Width [mm] 338/245
Height [mm] 219
Weight [kg] 20
Acoustic pressure level [db(A)] 63
Right of modifications reserved
OE SA
LA
OG
OA
DE
FA

EV20-630 Rotary Vane Vacuum Pumps
Oil lubricated, air-cooled
June 2010 8 Issue C
EV40
Pipework up to 2m / 2m up to 10m 1” / 1 1/2”
Width of vanes, min. [mm] 19
Air flow at 50/60 Hz [m3/h] 41/48
Length [mm]/Width [mm] 462/269
Height [mm] 268
Weight [kg] 38
Acoustic pressure level [db(A)] 69
Right of modifications reserved
OE SA
LA
OA
DE
FA
MI MA
GA

EV20-630 Rotary Vane Vacuum Pumps
Oil lubricated, air-cooled
Issue C 9 June 2010
EV70
EV100
Pipework up to 2m / 2m up to 10m 1 1/4” / 1 3/4”
1 1/4” / 1 3/4”
Width of vanes, min. [mm] 34
34
Air flow at 50/60 Hz [m3/h] 70/84
100/120
Length [mm]/Width [mm] 688/374
799/374
Height [mm] 300
300
Weight [kg] 54
77
Acoustic pressure level [db(A)] 67
68
Right of modifications reserved
FA
GA
OL
DE
FA
MIOA
MA
LA
SAOE
OD

EV20-630 Rotary Vane Vacuum Pumps
Oil lubricated, air-cooled
June 2010 10 Issue C
EV160
EV200
EV300
Pipework up to 2m / 2m up to
10m 2” / 2.1/2”
2” / 2.1/2”
2” / 2.1/2”
Width of vanes, min. [mm] 37
37
37
Air flow at 50/60 Hz [m3/h] 160/192
184/221
240/288
Length [mm]/Width [mm] 879/531
1016/531
1097/531
Height [mm] 415
415
415
Weight [kg] 155
177
193
Acoustic pressure level [db(A)] 71
73
73
Right of modifications reserved

EV20-630 Rotary Vane Vacuum Pumps
Oil lubricated, air-cooled
Issue C 11 June 2010
EV400
EV630
Pipework up to 2m / 2m up to 10m 3” / 4”
3” / 4”
Width of vanes, min. [mm] 59
59
Air flow at 50/60 Hz [m3/h] 400/480
630/750
Length [mm]/Width [mm] 1312/672
1540/672
Height [mm] 501
501
Weight [kg] 400
525
Acoustic pressure level [db(A)] 78
80
Right of modifications reserved