Edwards nEXT730 - Page 62

B8J200880_E - Installation
Page 61
All inlet flange bolts must be re-tightened once the system is under vacuum. Ensure that
no torques or other forces are transmitted to the pump from the vacuum system or the
associated pipelines.
Mounting position
nEXT730
nEXT930
nEXT1230
160
ISO-K
160 CF
200
ISO-K
200 CF
200 ISO-K
200
ISO-F
200 CF
Mounting high vacuum ISO-F flange
connection
▪ with clearance hole, refer to Figure:
Mounting high vacuum ISO-F flange
connection with clearance hole
▪ with blind hole thread, refer to
Figure: Mounting high vacuum ISO-F
flange connection with blind hole
thread
-
-
-
-
-
Yes
-
Mounting high vacuum flange ISO-K flange
at ISO-F flange with collar flange, refer to
Figure: Mounting high vacuum flange ISO-
K flange at ISO-F flange with collar flange
Yes
-
Yes
-
Yes
-
-
Mounting high vacuum flange ISO-K flange
at ISO-K flange, refer to Figure: Mounting
high vacuum flange ISO-K flange at ISO-K
flange
Yes
-
Yes
-
Yes
-
-
Mounting high vacuum flange ISO-K flange
at ISO-F flange with claws, refer to Figure:
Mounting high vacuum flange ISO-K
flange at ISO-F flange with claws
Yes
-
Yes
-
Not
Permitted*
-
-
Mounting high vacuum CF flange
connection
▪ with clearance hole, refer to Figure:
Mounting high vacuum CF flange
connection with clearance hole
▪ with blind hole thread, refer to
Figure: Mounting high vacuum CF
flange connection with blind hole
thread
-
Yes
-
Yes
-
-
Yes
* Mounting of the nEXT1230 with claws is not allowed.