Edwards nEXT730 - Controller Run Time; Pump Run Time; Pump Cycles

B8J200880_E - Maintenance
Page 106
Bit number
Status flag
Active flag means
13
Bearing conditioning
automatic enable
Set if Bearing conditioning is automatically
enabled on bit 8 or 9 set. Typically enabled
by default
14
Bearing conditioning
enabled
Set if Bearing conditioning is presently
enabled, refer to Bearing run in mode on
page 121.
15-31
Reserved
-
8.5 Controller run time
The run hours and recommended service time of the controller on the nEXT pump can
be monitored.
Send the following query:
Command
?
v
8
8
2
cr
The reply will be as follows, where the first number is the hours run by the controller
and the second is the number of hours until service is recommended:
Reply
=
v
8
8
2
sp
d
d
d
d
d
d
;
d
d
d
d
d
d
cr
Note that the number of hours until the next service is due is estimated by the controller
based on the operating conditions of the pump and therefore may reduce at more or
less than 1 hour per hour. The dominant factor in extending controller life is reduced
pump temperature.
8.6 Pump run time
The run hours and recommended service time of the rotor in the nEXT pump can be
monitored.
Send the following query:
Command
?
v
8
8
4
cr
The reply will be as follows, where the first number is the start-stop cycles completed by
the pump and the second is the number of start-stop cycles until service is
recommended:
Reply
=
v
8
8
4
sp
d
d
d
d
d
d
;
d
d
d
d
d
d
cr
8.7 Pump cycles
The number of start-stop cycles completed and the number remaining until the next
service is due can be monitored.
Send the following query:
Command
?
v
8
8
4
cr
The reply will be as follows, where the first number is the start-stop cycles completed by
the pump and the second is the number of start-stop cycles until service is
recommended: