Edwards nEXT200200 - Decoding Service Status Words

Service ash
c
ode
Comments Acons
LED on 3sec
LED o 1sec
Bearing and oil
cartridge service
recommended
We recommend you to replace the
bearing and oil cartridge. Refer to Service
on page 89.
LED on 3sec
LED o 3sec
Pump service necessary
The turbo impeller or controller has
reached its expected life. We recommend
you to return the pump to our service
centre for service. Refer to Service on
page 89.
8.2 Decoding service status words
The service status can be accessed through the serial link. This method of accessing
service status will give the most complete informaon of current and future service
requirements and preventave maintenance acvies can be scheduled.
A summary of the current pending service status is given in response to the service
status command that follows:
Command ? V 8 8 1 cr
The reply is as follows:
Reply = V 8 8 1 sp h h h h h h h h cr
The service status word is made up of 8 hexidecimal digits. To decode this word, convert
each digit in
to a 4‑digit binary number as described in Decoding system status words on
page 83.
Each binary digit (bit) represents a ag that is acve (state 1) or not acve (state 0). To
help decode the service status word, each bit is numbered (starng with 0 for the least
signicant to 31 for the most signicant) as shown in Controller run me on page 81. The
meaning of each bit in the service status word is given in Table: Service ags on page 80.
Table 24 Service ags
Bit number
Status ag Acve ag means
0 Oil cartridge service due
Set when hours unl oil c
artridge service due
= 0
1 Bearing service due Set when hours unl bearing ser
vice due = 0
2 Pump service due
Set when hours unl pump ser
vice due = 0
or cycles unl pump service due = 0
3 Controller service due
Set when hours unl controller service due =
0
4 Reserved -
5 Reserved -
6 Reserved -
Page 80
B85200880_D - Fault nding