Edwards nEXT85 User Manual

Protecon against over-speed............................................................................... 54
Electrical supply failure.......................................................................................... 55
Bakeout.............................................................................................................................56
Shut down the pump manually........................................................................................ 57
Maintain the nEXT85 58
Bearing and oil cartridge maintenance.............................................................................59
Rotor life........................................................................................................................... 59
Cleaning the pump........................................................................................................... 59
Decoding service status words......................................................................................... 59
Controller run me........................................................................................................... 60
Pump run me.................................................................................................................. 61
Pump cycles...................................................................................................................... 61
Bearing run me............................................................................................................... 61
Oil cartridge run me....................................................................................................... 61
Storage 63
Disposal 64
Troubleshoong 65
The controller LEDs do not ash for 0.5 seconds when system switched on................... 65
The pump does not rotate
aer a parallel start command is supplied............................ 65
The pump does not rotate aer a serial start command is sent.......................................65
The pump does not respond in mul- drop mode........................................................... 66
The green Normal LED does not light or the pump is not rotang at full speed or
the pump fails whilst running...................................................................................... 66
Ulmate pressure cannot be reached.............................................................................. 66
The pump is very noisy or there is excessive vibraon or both........................................67
No serial comms............................................................................................................... 67
Fail signal or standby signal not working.......................................................................... 67
Yellow service LED is
ashing a repeated sequence......................................................... 67
The red alarm LED is on.................................................................................................... 68
The red alarm LED is ashing............................................................................................68
Any other problems.......................................................................................................... 68
Command set error codes................................................................................................ 68
Flashing service codes...................................................................................................... 69
Flashing error codes......................................................................................................... 69
Decoding system status words......................................................................................... 70
Service
informaon.......................................................................................................... 73
Service 74
Returning a pump for service........................................................................................... 74
Bearing and oil cartridge on-site maintenance.................................................................74
Spares 76
Inlet screen....................................................................................................................... 76
Inlet strainer..................................................................................................................... 76
B8G0-00-880A - Contents
Page 7

Edwards nEXT85 Specifications

General

Brand	Edwards
Model	nEXT85
Category	Water Pump
Language	English