A301-05-880 Issue A
Page 8 © Edwards Limited 2014. All rights reserved.
Edwards and the Edwards logo are trademarks of Edwards Limited.
Technical Data
2.8 Cooling water data
Note: The EH1200 pump can be operated continuously without cooling water if the inlet pressure is kept below
5mbar (5x10
2
Pa) and the pumpdown time is no longer than 10 minutes.
2.9 Noise and vibration data
2.10 Connections
Table 8 - Cooling water supply data: EH pumps
Recommended cooling water flow
(with inlet temperature of 20 ºC)
EH1200
EH2600
EH4200
3 l min
-1
6 l min
-1
6 l min
-1
Recommended cooling water supply pressure 2 to 6 bar gauge, 3 to 7 bar absolute,
3 x 10
5
to 7 x 10
5
Pa
Permissible temperature range 5 to 35 ºC
Table 9 - Noise and vibration data
Vibration level < 1.8 mm s
-1
r.m.s. in the range 10 to 1000 Hz
Continuous A-weighted sound pressure level
measured at 1 metre from the EH pump
*
:
*
The noise level was measured in accordance with ISO2151 and with the pump running at <0.1 mbar on 50 Hz
supply. Running on a 60 Hz supply or at higher inlet pressures will increase the noise level.
EH250 EH500 EH1200 EH2600 EH4200
70 dB(A) 70 dB(A) 70 dB(A) 75 dB(A) 75 dB(A)
Table 10 - Connections
Cooling water connections:
Inlet
Outlet
3/8 inch BSP male
3/8 inch BSP male
Vacuum connections:
EH250 EH500 EH1200 EH2600 EH4200
Inlet ISO63 ISO100 ISO160 ISO160 ISO250
Outlet ISO40 ISO63 ISO100 ISO100 ISO100
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