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MR850 Technical Manual * Revision J * Issued November 2005 * Ref. 185041340 (185041713 internal)
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TROUBLESHOOTING ..................................................................................................................... 24
6.1 OPERATIONAL PROBLEMS.................................................................................................................... 24
6.2 TECHNICAL PROBLEMS........................................................................................................................ 26
6.3 “SEE MANUAL” ERROR CODES............................................................................................................. 27
6.4 DIAGNOSTIC MENU.............................................................................................................................. 29
6.4.1 Diagnostic Menu for Software Versions 5.45, 5.70............................................................... 29
6.4.2 Diagnostic Menu for Software Version 6.00 ......................................................................... 30
6.4.3 Diagnostic Menu for Software Version 7.00 & 7.21.............................................................. 31
6.4.4 Diagnostic Menu for Software Version 7.14 & 7.22.............................................................. 32
6.4.5 Diagnostic Menu for Software Version 7.23 ......................................................................... 34
7 SERVICING PROCEDURES............................................................................................................35
7.1 GENERAL CONSIDERATIONS ................................................................................................................ 35
7.2 DISASSEMBLY ..................................................................................................................................... 35
7.2.1 Opening the case.................................................................................................................. 35
7.2.2 Replacing Fuses ................................................................................................................... 36
7.2.3 Replacement of Printed Circuit Boards (PCBs) .................................................................... 37
7.2.4 Replacement of Transformer ................................................................................................ 38
7.2.5 Servicing the Heater Plate .................................................................................................... 38
7.2.6 Installing New Software.........................................................................................................42
7.2.7 Replacing the Mains Cable ................................................................................................... 43
7.2.8 Closing the case.................................................................................................................... 43
8 PERFORMANCE TESTING .............................................................................................................44
8.1 HUMIDIFIER PERFORMANCE TESTING ................................................................................................... 44
8.1.1 Entering the Service Menu.................................................................................................... 44
8.1.2 Humidifier Calibration Check ................................................................................................ 44
8.1.3 Humidifier Display Test .........................................................................................................45
8.1.4 Humidifier Voltage Calibration Check ................................................................................... 46
8.1.5 Humidifier Warm-up and Control Check ............................................................................... 46
8.2 PROBE ACCURACY CHECK................................................................................................................... 47
8.2.1 Probe Temperature Accuracy Test....................................................................................... 47
8.2.2 Probe Flow Accuracy Test .................................................................................................... 47
9 RECOMMENDED MAINTENANCE CHECKLIST............................................................................ 49
9.1 HUMIDIFIER CHECK (ANNUALLY) .......................................................................................................... 49
9.2 PROBE CHECK (EVERY SIX MONTHS).................................................................................................... 49
10 SPARE PARTS................................................................................................................................. 51
11 CALIBRATION PROBE ................................................................................................................... 55
12 SERIAL PORT & LOGGING SOFTWARE ...................................................................................... 56
12.1 INTRODUCTION............................................................................................................................... 56
12.2 INSTALLATION................................................................................................................................. 56
12.3 OPERATING INSTRUCTIONS......................................................................................................... 56
12.3.1 Viewing Humidifier Data........................................................................................................ 56
12.3.2 Logging Humidifier Data to File............................................................................................. 57
13 EMC INFORMATION........................................................................................................................ 58
14 PRODUCT CHANGE HISTORY....................................................................................................... 60