Metrohm 709 IC Pump - Manual (Page 6)

Table of contents
709 IC Pump
II
3 Operation
........................................................................................
19
3.1 Sequence of operations ............................................................... 19
3.2 Flussrate......................................................................................... 20
3.3 Flow correction.............................................................................. 20
3.4 Pressure limit values for safety shutdown ................................ 21
3.4.1 Minimum pressure limit........................................................ 21
3.4.2 Maximum pressure limit....................................................... 22
3.5 Switching the pump drive on and off ......................................... 22
3.6 On/off switching of the external control .................................... 23
3.7 Inquiry of the current pressure ................................................... 23
3.8 Overview of the key functions..................................................... 23
4 Notes – Maintenance – Faults
......................................
25
4.1 Practical notes............................................................................... 25
4.1.1 Protection against foreign particles ..................................... 25
4.1.2 Pulsation dampener............................................................. 25
4.1.3 Eluents ................................................................................. 25
4.2 Maintenance and servicing.......................................................... 26
4.2.1 General information ............................................................. 26
4.2.2 Maintenance work at the pump head .................................. 27
4.3 Faults and malfunctions............................................................... 31
4.4 Diagnosis........................................................................................ 32
4.4.1 General information ............................................................. 32
4.4.2 Entry of diagnostics with automatic display test.................. 33
4.4.3 Keyboard test....................................................................... 33
4.4.4 RS232 Test........................................................................... 34
4.4.5 Initialize and test RAM.......................................................... 35
4.5 Validation / GLP............................................................................. 36
5 Interfaces
.......................................................................................
37
5.1 RS232 interface ............................................................................. 37
5.1.1 General rules for remote control .......................................... 37
5.1.2 Call-up of objects................................................................. 38
5.1.3 Trigger.................................................................................. 39
5.1.4 Status messages ................................................................. 40
5.1.5 Error messages.................................................................... 41
5.1.6 RS232 error rectification....................................................... 41
5.1.7 Remote control commands ................................................. 42
5.1.8 Data transmission protocol.................................................. 43