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3. Technical data
3.1 General technical data
Table 1 General technical data
Item
Operating conditions
Materials in contact
with the process gas
Degree of protection
Lubrication
Table 2 General technical data
Characteristics
Body dimensions length x width x
height*
Mass (excluding packaging)
Noise level (at ultimate with a piped ex-
haust)
Typical vibration level at inlet
Pump inlet flange (bolted)
Exhaust gas outlet
Lubricant volume
* Refer to
‡ Refer to
for information relating to the exhaust size and length for EXS dry pumping systems.
A41870880_A
A41870880_A - Technical data
Description
Intended use
Ambient temperature range:
Operating
Storage
Maximum relative humidity:
Maximum operating altitude
Maximum operating back
pressure
Pollution degree
Pump, shaft and rotors
Seals
Gas system
Hazardous electrical sub sys-
tem
Oil type
Installation drawings
Connect the dry pumping system to the vacuum/exhaust system
80% for temperatures up to 31 °C
decreasing linearly to 50% relative
humidity at 40 °C
2 (IEC 61010)
Cast SG iron
PTFE and fluoroelastomer
Carbon steel, brass, PTFE and fluo‐
roelastomer
IP21D (IEC60529)
PFPE Drynert 25/6 (recommended)
Fomblin
®
Krytox
EXS750
1650 x 567 x 642
650
< 70
< 1.5
ISO100
NW50
2.8
on page 29.
Page 15
Rating
Indoor
5 to 40
-45 to 55
2000
1.2
®
25/6 (alternative)
1525 (alternative)
EXS450
1265 x 567 x 642
540
‡
1.8
on page 35
07/2021 - ©Edwards Limited
Units
°C
°C
m
bar(a)
Unit
mm
kg
dB(A)
mm/s
-
-
litre
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